1. The utility model provides an underground continuous wall connects, obtains after the construction method construction through underground continuous wall connects, uses in underground continuous wall's wall body, be equipped with the steel reinforcement cage in the wall body, the steel reinforcement cage intussuseption is filled with first concrete, its characterized in that, underground continuous wall connects includes: and the water-stopping joint plate is arranged in the wall body, a rubber sleeve is arranged in the water-stopping joint plate, the rubber sleeve is arranged on the inner wall of the water-stopping joint plate, and second concrete is filled in the rubber sleeve.

2. The underground diaphragm wall joint of claim 1, wherein the rubber sleeve comprises a first rubber sleeve, a second rubber sleeve and a third rubber sleeve, one end of the first rubber sleeve and one end of the second rubber sleeve are overlapped, and the other end of the second rubber sleeve and the third rubber sleeve are overlapped.

3. The underground continuous wall joint as claimed in claim 1, wherein the bottom end of the water stop joint plate is provided with a water pumping hole, a water pumping pipe is arranged in the wall body, and the water pumping hole is connected with the water pumping pipe.

4. The underground diaphragm wall joint as claimed in claim 1, wherein the second concrete is expansive concrete.

5. The underground continuous wall joint as claimed in claim 1, wherein the water-stop joint plate has a circular cross-section and comprises a first semicircular steel plate and a second semicircular steel plate which are spliced with each other.

6. A construction method of an underground diaphragm wall joint is characterized by comprising the following steps:

constructing along a guide wall and excavating to form a groove, placing a reinforcement cage and a water stop joint plate into the groove, and pouring first concrete into the reinforcement cage;

placing a rubber sleeve along the water stop joint plate;

pouring clear water into the rubber sleeve to enable the rubber sleeve to sink, and extracting muddy water in the water-stop joint plate;

and when the rubber sleeve sinks into the bottom of the water stop joint plate, stopping watering, and pouring second concrete into the rubber sleeve to form a joint in the groove.

7. A method of constructing an underground diaphragm wall joint according to claim 6, wherein the placing of a rubber boot along the water stop joint plate comprises:

a first rubber sleeve is placed along the water stop joint plate;

when the first rubber sleeve sinks to the hole of the water stop joint plate, a second rubber sleeve and a third rubber sleeve are placed along the water stop joint plate, wherein the first rubber sleeve is in lap joint with one end of the second rubber sleeve, and the other end of the second rubber sleeve is in lap joint with the third rubber sleeve.

8. The construction method of the underground continuous wall joint according to claim 6, wherein a water pumping hole is formed in the bottom end of the water stop joint plate, a water pumping pipe is arranged in the groove, the water pumping hole is connected with the water pumping pipe, clear water is filled into the rubber sleeve to enable the rubber sleeve to sink, and muddy water in the water stop joint plate is extracted, and the construction method comprises the following steps:

toward pour into the clear water in the rubber sleeve, so that the rubber sleeve sinks, follows extract in the drinking-water pipe the muddy water in the stagnant water joint board, so that muddy water passes through the hole that draws water discharges.

9. The method for constructing an underground diaphragm wall joint according to claim 6, wherein the step of pouring clear water into the rubber sleeve to sink the rubber sleeve and after extracting muddy water in the water-stop joint plate comprises the following steps:

and controlling the sinking speed of the rubber sleeve so as to enable the sinking speed of the rubber sleeve to be matched with the water pumping speed.

10. The method for constructing an underground diaphragm wall joint according to claim 6, wherein the second concrete is expansive concrete, and the step of stopping watering when the rubber sleeve sinks into the bottom of the water-stop joint plate and pouring the second concrete into the rubber sleeve to form the joint in the groove comprises the following steps:

stopping filling water when the rubber sleeve sinks into the bottom of the water stop joint plate;

and pouring the expansive concrete into the rubber sleeve, so that a joint is formed in the groove after the expansive concrete expands.

Background

Along with the rapid development of urban process, land resources are more and more scarce, and the development and utilization of urban underground space become more and more mainstream directions of urban development. The appearance of high-rise and super high-rise buildings and the construction of underground comprehensive pipe galleries and urban subways, and urban underground spaces are gradually developed to the direction of large size and extra depth. The foundation pit engineering not only provides a space for the construction of an underground structure and ensures the safety of constructors and equipment, but also ensures the safe use of surrounding roads, pipelines, buildings and the like, so that the underground continuous wall technology is developed at the end. The underground continuous wall generally has the effects of retaining soil, intercepting water, preventing seepage and the like in underground engineering, is constructed by dividing groove sections, the groove sections are connected into a whole through underground continuous wall joints, and each unit groove section is related to the success or failure problem of the whole engineering construction. In the related technology, the joint of the underground continuous wall often has problems, the joint has poor anti-seepage effect, complex structure and difficult manufacture, and engineering accidents such as wall seepage, soil flowing and the like occur, so that the engineering safety and the surrounding environment are seriously damaged.

Disclosure of Invention

The present invention is directed to solving at least one of the problems of the prior art. Therefore, the underground diaphragm wall joint and the construction method thereof are reasonable in structure, reliable in connection, excellent in performance and convenient to construct.

According to the first aspect of the present invention, an underground continuous wall joint is obtained by a construction method of the underground continuous wall joint, and is applied to a wall body of an underground continuous wall, wherein a reinforcement cage is arranged in the wall body, and the reinforcement cage is filled with first concrete, and the underground continuous wall joint includes: and the water-stopping joint plate is arranged in the wall body, a rubber sleeve is arranged in the water-stopping joint plate, the rubber sleeve is arranged on the inner wall of the water-stopping joint plate, and second concrete is filled in the rubber sleeve.

The underground continuous wall joint according to the embodiment of the invention has at least the following beneficial effects: the underground continuous wall joint in the embodiment of the invention is obtained by construction through an underground continuous wall joint construction method, and concrete is poured to form a wall body after a steel reinforcement cage and a water-stop joint plate are placed in a groove formed by guide wall construction, wherein a through hole is formed in the water-stop joint plate, a rubber sleeve with second concrete is filled in the water-stop joint plate, and the rubber sleeve is tightly attached to the inner wall of the water-stop joint plate to seal the water-stop joint plate, so that the purposes of water stopping and seepage preventing are achieved.

According to some embodiments of the invention, the rubber sleeve comprises a first rubber sleeve, a second rubber sleeve and a third rubber sleeve, one end of the first rubber sleeve and one end of the second rubber sleeve are overlapped, and the other end of the second rubber sleeve and the third rubber sleeve are overlapped.

According to some embodiments of the invention, a water pumping hole is formed in the bottom end of the water stop joint plate, a water pumping pipe is arranged in the wall body, and the water pumping hole is connected with the water pumping pipe.

According to some embodiments of the invention, the second concrete is expanded concrete.

According to some embodiments of the present invention, the water-stop joint plate has a circular cross-section, and the water-stop joint plate includes two first semicircular steel plates and two second semicircular steel plates which are spliced with each other.

A construction method of an underground diaphragm wall joint according to an embodiment of a second aspect of the present invention is characterized by comprising: constructing along a guide wall and excavating to form a groove, placing a reinforcement cage and a water stop joint plate into the groove, and pouring first concrete into the reinforcement cage; placing a rubber sleeve along the water stop joint plate; pouring clear water into the rubber sleeve to enable the rubber sleeve to sink, and extracting muddy water in the water-stop joint plate;

and when the rubber sleeve sinks into the bottom of the water stop joint plate, stopping watering, and pouring second concrete into the rubber sleeve to form a joint in the groove.

The construction method of the underground continuous wall joint provided by the embodiment of the invention at least has the following beneficial effects: the construction method of the underground continuous wall joint in the embodiment of the invention is used for forming the underground continuous wall joint in the embodiment of the first aspect of the invention, a reinforcement cage and a water-stop joint plate are placed in a groove formed by the construction of a guide wall, then concrete is poured to form a wall body, wherein a through hole is formed in the water-stop joint plate, a rubber sleeve is sunk into the water-stop joint plate, the water-stop joint plate is sunk section by filling water, water is pumped simultaneously, after the rubber sleeve is sunk to the bottom, second concrete is poured into the rubber sleeve, so that the rubber sleeve is tightly attached to the inner wall of the water-stop joint plate, the water-stop joint plate is sealed, and the purpose of water stopping and seepage preventing is achieved.

According to some embodiments of the invention, the placing of a rubber boot along the water stop joint plate comprises: a first rubber sleeve is placed along the water stop joint plate; when the first rubber sleeve sinks to the hole of the water stop joint plate, a second rubber sleeve and a third rubber sleeve are placed along the water stop joint plate, wherein the first rubber sleeve is in lap joint with one end of the second rubber sleeve, and the other end of the second rubber sleeve is in lap joint with the third rubber sleeve.

According to some embodiments of the present invention, a water pumping hole is disposed at the bottom end of the water stop joint plate, a water pumping pipe is disposed in the groove, the water pumping hole is connected to the water pumping pipe, and clean water is filled into the rubber sleeve to sink the rubber sleeve and pump muddy water in the water stop joint plate, including: toward pour into the clear water in the rubber sleeve, so that the rubber sleeve sinks, follows extract in the drinking-water pipe the muddy water in the stagnant water joint board, so that muddy water passes through the hole that draws water discharges.

According to some embodiments of the invention, the step of filling clear water into the rubber sleeve to enable the rubber sleeve to sink, and after the step of pumping the muddy water in the water stop joint plate comprises the following steps: and controlling the sinking speed of the rubber sleeve so as to enable the sinking speed of the rubber sleeve to be matched with the water pumping speed.

According to some embodiments of the invention, the second concrete is expansive concrete, and the pouring of water is stopped when the rubber sleeve sinks into the bottom of the water-stop joint plate, and the second concrete is poured into the rubber sleeve to form the wall body in the groove, including: stopping filling water when the rubber sleeve sinks into the bottom of the water stop joint plate; and pouring the expansive concrete into the rubber sleeve, so that a joint is formed in the groove after the expansive concrete expands.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

The invention is further described with reference to the following figures and examples, in which:

FIG. 1 is a schematic structural view of a diaphragm wall joint according to some embodiments of the present invention;

FIG. 2 is a schematic structural view of a diaphragm wall joint according to another embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a rubber boot according to some embodiments of the present invention;

FIG. 4 is a schematic diagram of a sinking of a rubber sleeve according to some embodiments of the present invention;

FIG. 5 is a schematic view of the construction completion of an underground diaphragm wall joint according to some embodiments of the present invention;

FIG. 6 is a cross-sectional view of a completed underground diaphragm wall joint provided by some embodiments of the present invention;

FIG. 7 is a flow chart of a method of constructing an underground diaphragm wall joint according to some embodiments of the present invention;

FIG. 8 is a flow chart illustrating a method of constructing a diaphragm wall joint according to further embodiments of the present invention;

fig. 9 is a flowchart illustrating a method for constructing an underground diaphragm wall joint according to another embodiment of the present invention.

Reference numerals:

a wall body 100; a water stop joint plate 101; a water pumping hole 1011; a first semi-circular steel plate 1012; a second semicircular steel plate 1013; a reinforcement cage 102; a rubber sleeve 103; a first rubber cover 1031; a second rubber sleeve 1032; a third rubber sleeve 1033; a first concrete 104; a second concrete 105; the suction pipe 106.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, the meaning of a plurality is one or more, the meaning of a plurality is two or more, and the above, below, exceeding, etc. are understood as excluding the present numbers, and the above, below, within, etc. are understood as including the present numbers. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.

In the description of the present invention, reference to the description of the terms "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Referring to fig. 1 and 2, an embodiment of the present invention provides an underground continuous wall joint, which is obtained by a construction method of the underground continuous wall joint and is applied to a wall 100 of an underground continuous wall, the underground continuous wall includes the wall 100 of the underground continuous wall, a water-stop joint plate 101 and a steel reinforcement cage 102 arranged outside the water-stop joint plate 101 are arranged in the wall 100, the water-stop joint plate 101 is a columnar steel plate and has a column hole at a top end thereof, a rubber sleeve 103 is arranged in the water-stop joint plate 101, the rubber sleeve 103 is arranged on an inner wall of the water-stop joint plate 101, a first concrete 104 is filled in the steel reinforcement cage 102, a second concrete 105 is filled in the rubber sleeve 103, the first concrete 104 and the second concrete 105 are used for distinguishing technical characteristics, the first concrete 104 filled in the steel reinforcement cage 102 is used for fixing the wall 100, the second concrete 105 filled in the rubber sleeve 103 is used for pressing the rubber sleeve 103 against the inner wall of the water-stop joint plate 101, the rubber sleeve 103 is a common rubber bag having a certain elasticity, and the present invention is not limited thereto. The underground continuous wall in the embodiment of the invention is obtained by a construction method of an underground continuous wall joint, a reinforcement cage 102 and a water-stop joint plate 101 are placed in a groove formed by guide wall construction, then concrete is poured to form a wall body 100, wherein the guide wall is a position prepared for underground continuous wall construction in advance, a groove is dug at the position, a through hole is formed in the water-stop joint plate 101, a rubber sleeve 103 with second concrete 105 is filled in the water-stop joint plate 101, and the rubber sleeve 103 is tightly attached to the inner wall of the water-stop joint plate 101 to seal the water-stop joint plate 101, so that the purpose of water and seepage prevention is achieved.

Referring to fig. 3, 4 and 5, in some embodiments of the present invention, in order to improve the water stopping performance and the sinking control of the rubber sleeve 103, the rubber sleeve 103 includes a first rubber sleeve 1031, a second rubber sleeve 1032 and a third rubber sleeve 1033, one end of the first rubber sleeve 1031 and the second rubber sleeve 1032 are overlapped, and the other end of the second rubber sleeve 1032 is overlapped with the third rubber sleeve 1033, in one embodiment, the second rubber sleeve 1032 can be used as a special ferrule for fixedly connecting the first rubber sleeve 1031 and the third rubber sleeve 1033, so as to improve the water stopping performance, the first rubber sleeve 1031, the second rubber sleeve 1032 and the third rubber sleeve 1033 have certain elasticity, and the diameters of the first rubber sleeve 1031, the second rubber sleeve 1032 and the third rubber sleeve 1033 are all smaller than the cylindrical hole formed by the water stopping joint plate 101, so as to sink smoothly into the joint plate 101, and so as to facilitate the first rubber sleeve 1031, the second rubber sleeve 1032 and the third rubber sleeve 1033 to make the second concrete 105 sink smoothly after expansion, The second rubber sleeve 1032 and the third rubber sleeve 1033 are tightly connected with the inner wall of the water stop joint plate 101, the length of each section of rubber sleeve 103 is customized according to construction requirements, on the premise that requirements of the embodiment of the invention are met, multiple sections of rubber sleeves 103 can be customized according to different construction requirements, every two sections of rubber sleeves 103 are spliced and fixed through one second rubber sleeve 1032, water stop performance is improved, and the overlapping length of the rubber sleeves 103 meets the water stop requirement and are mutually overlapped.

Referring to fig. 3 and 5, in some embodiments of the present invention, a water pumping hole 1011 is disposed at a bottom end of each water-stopping joint plate 101, a water pumping pipe 106 is disposed in the wall 100, the water pumping hole 1011 is connected to the water pumping pipe 106, when water is poured into the rubber sleeve 103 to sink the rubber sleeve 103, water is conveniently pumped through the water pumping pipe 106, so that muddy water in the water-stopping joint plate 101 is discharged through the water pumping hole 1011 at the bottom, in an embodiment, the water pumping pipe 106 is a steel pipe, the steel pipe is slightly higher than the ground to facilitate water drainage, a mud pit is disposed on the ground and connected to the water pumping pipe 106, the mud pit is used for collecting muddy water coming out of the water pumping pipe 106, and the water pumping pipe 106 may also be disposed between the water-stopping joint plates 101 and connected to the water pumping hole 1011 of each water-stopping joint plate 101.

In some embodiments of the present invention, the second concrete 105 is expansive concrete, the first concrete 104 is ordinary concrete, the expansive concrete can expand after being filled, and after the concrete expands, the rubber sleeve 103 is pressed to be tightly attached to the inner wall of the water stop joint plate 101, so as to achieve the purpose of water stop of the underground continuous wall joint, and the constructed underground continuous wall is as shown in fig. 6.

Referring to fig. 1 and 2, in some embodiments of the present invention, the cross-section of the water-stop joint plate 101 is circular, the water-stop joint plate 101 is placed vertically, the water-stop joint plate 101 includes a first semicircular steel plate 1012 and a second semicircular steel plate 1013 that are spliced with each other, that is, the first semicircular steel plate 1012 and the second semicircular steel plate 1013 are C-shaped, the C-shaped steel is used, a larger-diameter steel pipe can be used to be split, the steel pipes are respectively used as the water-stop joint plates 101 on the left and right sides, the C-shaped steel can also be overlapped, and a certain degree of smoothness should be maintained on the inner wall of the water-stop joint plate 101 during overlapping.

Referring to fig. 7, an embodiment of the present invention further provides a construction method of an underground diaphragm wall joint, which is used to form the underground diaphragm wall joint in the above embodiments, and the construction method of the underground diaphragm wall joint includes, but is not limited to, the following steps S110, S120, S130 and S140.

And S110, constructing along the guide wall, excavating to form a groove, placing a reinforcement cage and a water stop joint plate into the groove, and pouring first concrete into the reinforcement cage.

And step S120, placing a rubber sleeve in the water-stopping joint plate.

And S130, pouring clear water into the rubber sleeve to enable the rubber sleeve to sink, and pumping muddy water in the water-stop joint plate.

And step S140, stopping water filling when the rubber sleeve sinks into the bottom of the water stop joint plate, and pouring second concrete into the rubber sleeve to form a joint in the groove.

In some embodiments of the present invention, the construction method of the underground continuous wall joint in the embodiments of the present invention is used for forming the underground continuous wall joint in the above embodiments of the present invention, and concrete is poured to form the joint after a steel reinforcement cage and a water-stop joint plate are placed in a groove formed in the construction of the guide wall, wherein the guide wall is a position prepared for the construction of the underground continuous wall in advance, a groove is dug at the position, a through hole is formed in the water-stop joint plate, first concrete is poured into the steel reinforcement cage to fix the water-stop joint plate, a rubber sleeve is sunk into the water-stop joint plate, water is pumped down section by section through pouring water, muddy water in the water-stop joint plate is pumped out, after the rubber sleeve is sunk, second concrete is poured into the rubber sleeve to make the rubber sleeve cling to the inner wall of the water-stop joint plate to seal the water-stop joint plate, so as to achieve the purpose of water-stop and water-seepage, the water stop joint structure of the underground continuous wall formed by the construction method in the embodiment of the invention has the advantages of reasonable structure, reliable connection, excellent performance and convenient construction.

It should be noted that, in some embodiments of the present invention, the cross section of the water-stop joint plate is circular, the water-stop joint plate includes a first semicircular steel plate and a second semicircular steel plate that are spliced with each other, that is, the first semicircular steel plate and the second semicircular steel plate are C-shaped, the adopted C-shaped steel is C-shaped steel, the steel pipes with larger diameters can be split into two parts, and the two parts are respectively used as water-stop joint plates on the left and right sides, and the C-shaped steel can also be lapped, and a certain smoothness degree should be kept on the inner wall of the water-stop joint plate during lapping, in step S110, first concrete is poured into the steel reinforcement cage, so that the C-shaped steel joint plate at the joint of the underground continuous wall is closed to form the water-stop joint plate, and a through hole is formed inside the water-stop joint plate.

It should be noted that, in some embodiments of the present invention, the wall body may include an already-constructed wall body and a wall body to be constructed and formed by an underground continuous wall, a water-stop joint formed by the construction method in the embodiments of the present invention is interposed between the two wall bodies, and two first semicircular steel plates and two second semicircular steel plates that are spliced with each other are applied, where the first semicircular steel plate may be applied to the already-constructed wall body, and the second semicircular steel plate is applied to the wall body to be spliced.

Referring to fig. 8, in the method for constructing an underground diaphragm wall joint according to the embodiment of the present invention, the step S120 includes, but is not limited to, the following steps S210 and S220.

Step S210, a first rubber sleeve is placed along the water stop joint plate.

And step S220, when the first rubber sleeve sinks to the hole of the water-stop joint plate, placing a second rubber sleeve and a third rubber sleeve along the water-stop joint plate.

In some embodiments of the present invention, a first rubber sleeve is placed along the water-stop joint plate, and when the first rubber sleeve is lowered to the orifice of the water-stop joint plate, a second rubber sleeve and a third rubber sleeve are placed along the water-stop joint plate, in embodiments of the present invention, in order to improve the water-stop performance and the lowering control of the rubber sleeves, the rubber sleeves include a first rubber sleeve, a second rubber sleeve and a third rubber sleeve, one end of the first rubber sleeve and one end of the second rubber sleeve are overlapped, the other end of the second rubber sleeve and the third rubber sleeve are overlapped, the second rubber sleeve is used as a special ferrule for fixedly connecting the first rubber sleeve and the third rubber sleeve, and the water-stop performance is improved, the first rubber sleeve, the second rubber sleeve and the third rubber sleeve have certain elasticity, and the diameters of the first rubber sleeve, the second rubber sleeve and the third rubber sleeve are smaller than the diameter of the water-stop cylindrical hole formed by the water-stop joint plate so as to be lowered into the water-stop joint plate, the rubber bag sleeve sinks smoothly, the first rubber sleeve, the second rubber sleeve and the third rubber sleeve are conveniently and tightly connected with the inner wall of the water stop joint plate after the second concrete expands, the length of each section of rubber sleeve is customized according to construction requirements, on the premise that the requirements of the embodiment of the invention are met, multiple sections of rubber sleeves can be customized according to different construction requirements, each two sections of rubber sleeves are spliced and fixed through one second rubber sleeve, the water stop performance is improved, and the overlapping length of the rubber sleeves meets the water stop requirement and is overlapped with each other.

In some embodiments of the present invention, a water pumping hole is formed at the bottom end of the water stop joint plate, a water pumping pipe is arranged in the groove, and the water pumping hole is connected to the water pumping pipe, in the construction method of the underground diaphragm wall joint according to the embodiments of the present invention, the step S130 includes: pouring clear water into the rubber sleeve to make the rubber sleeve sink, extracting muddy water in the water-stop joint plate from the water suction pipe, so that the muddy water is discharged through the water suction hole, and it needs to be explained that the rubber sleeve does mud collection work when sinking, prevents and treats pollution, and the water suction hole is guaranteed to be unblocked, makes things convenient for the rubber sleeve to sink, and simultaneously, the water suction hole arranged at the bottom end of the water-stop joint plate guarantees that muddy water and hole bottom sediment in the through hole of the water-stop joint plate are smoothly discharged.

In the construction method of the underground diaphragm wall joint according to the embodiment of the present invention, after the step S130, the method further includes: the sinking speed of the rubber sleeve is controlled so that the sinking speed of the rubber sleeve is matched with the pumping speed, when the rubber sleeve sinks, the drainage speed of the muddy water drainage hole is controlled according to construction requirements, mud collection work is done simultaneously, pollution prevention and control are achieved, the sinking speed of the rubber sleeve is controlled to be matched with the pumping speed, smooth sinking of the rubber sleeve is facilitated, muddy water can not be easily sprayed out to affect the surrounding environment, and the sinking work is sequentially and gradually executed.

Referring to fig. 9, in some embodiments of the present invention, the second concrete is expansive concrete, and in the method for constructing an underground diaphragm wall joint according to embodiments of the present invention, the step S140 includes, but is not limited to, the following steps S310 and S320.

And step S310, stopping filling water when the rubber sleeve sinks into the bottom of the water stop joint plate.

And step S320, pouring expansive concrete into the rubber sleeve to form a joint in the groove after the expansive concrete expands.

In some embodiments of the invention, after the rubber sleeve sinks to the bottom, the irrigation is stopped, the rubber sleeve does not need to sink through the irrigation, the micro-expansion concrete is poured in time, the rubber sleeve is extruded after the concrete expands to be tightly attached to the inner wall of the water stop joint plate so as to achieve the purpose of water stop of the underground continuous wall joint, the wall body is formed in the groove after the expansion concrete expands, the construction of the underground continuous wall is completed, and the formed underground continuous wall has reasonable joint structure, reliable connection, excellent performance and convenient construction.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention. Furthermore, the embodiments of the present invention and the features of the embodiments may be combined with each other without conflict.