1. The utility model provides an originating tunnel entrance to a cave seal structure for balanced shield of muddy water which characterized in that: including one seal ring (1), two seal rings (2), three seal rings (3), ring board (4), connecting bolt (5), turn over board (6), extend steel lantern ring (7) and fix the outside at work well inside lining (9) in fender pile wall (10) outside, one seal ring (1) two seal rings (2) with extend steel lantern ring (7) rigid connection and become whole, three seal rings (3) with extend steel lantern ring (7) afterbody and link to each other, ring board (4) are located the outside of three seal rings (3), it is located to turn over board (6) ring board (4) outside, connecting bolt (5) will three seal rings (3) ring board (4) are installed extend on the steel lantern ring (7).

2. The starting structure of the slurry shield adopting the glass fiber reinforced plastic for containment according to claim 1, characterized in that: extend steel lantern ring (7) and include stack shell (71) and tail end crown plate (72), stack shell (71) are tubular structure and axis and shield tunneling central line coincidence, stack shell (71) with pre-buried steel ring (91) rigid connection of working shaft inside lining (9), tail end crown plate (72) are located stack shell (71) tail end and with stack shell (71) rigid connection.

3. The starting structure of the slurry shield adopting the glass fiber reinforced plastic for containment according to claim 2, characterized in that: the length of the cylinder body (71) is 1000-1500 mm, and the thickness of the steel plate is 20-40 mm; the tail end annular plate (72) is an annular plate, and the axis of the tail end annular plate coincides with the center line of the cylinder body (71); the tail end ring plate (72) is made of a steel plate, and the ring width is 100-200 mm.

4. The starting structure of the slurry shield adopting the glass fiber reinforced plastic for containment according to claim 2, characterized in that: the upper ends of the first water stop ring (1) and the second water stop ring (2) are fixed on the inner side of the cylinder wall of the cylinder body (71).

5. The starting structure of the slurry shield adopting the glass fiber reinforced plastic for containment according to claim 4, characterized in that: the first water stop ring (1) and the second water stop ring (2) are fixed with the barrel body (71) through a shield tail sealing steel wire brush by welding, and the third water stop ring (3) is made of a cord fabric rubber plate.

6. The starting structure of the slurry shield adopting the glass fiber reinforced plastic for containment according to claim 4, characterized in that: the distance between the first water stop ring (1) and the second water stop ring (2) is 200-500 mm, and the distance between the second water stop ring (2) and the tail end annular plate (72) is 600-1000 mm.

7. The starting structure of the slurry shield adopting the glass fiber reinforced plastic for containment according to claim 5, characterized in that: the turning plate (6) is located on the outer side of the circular ring plate (4), the turning plate (6) comprises a turning plate fixing plate (61), a turning plate pin sleeve (62) and a turning plate rotating plate (63), the fixing plate (61) is connected to the outer side lower edge of the circular ring plate (4), the turning plate pin sleeve (62) is installed on the lower edge of the fixing plate (61) to be connected with the turning plate rotating plate (63) in a rotating mode, and the turning plate rotating plate (63) is located on the outer side of the lower portion of the three water stop rings (3).

8. The starting structure of the slurry shield adopting the glass fiber reinforced plastic for containment according to claim 4, characterized in that: the reinforced concrete structure is characterized by further comprising reinforced plates (8), wherein the reinforced plates (8) comprise longitudinal reinforced plates (81) and circumferential reinforced plates (82), the longitudinal reinforced plates (81) are rectangular steel plates, are positioned between the working well lining (9) and the tail end ring plate (72), and are uniformly arranged along the circumference of the extension steel lantern ring (7); the circumferential stiffening plates (82) are fan-shaped steel plates and are positioned between the longitudinal stiffening plates (81); the longitudinal stiffening plate (81) is respectively welded with the embedded steel ring (91), the cylinder body (71) and the tail end ring plate (72).

9. The starting structure of the slurry shield adopting the glass fiber reinforced plastic for containment according to claim 8, characterized in that: the thickness of the longitudinal stiffening plate (81) is 10-20 mm, and 60-80 longitudinal stiffening plates (81) are arranged; the thickness of the annular stiffening plate (82) is 10-20 mm.

10. A method of constructing a starting structure for a slurry shield using a fiberglass reinforced plastic envelope as claimed in any one of claims 1 to 9, comprising the steps of:

step a), an embedded steel ring (91) of a working well lining (9) is used as a welding working surface, and an extension steel sleeve ring (7) and a stiffening plate (8) are welded and installed;

step b), installing a first water stop ring (1) and a second water stop ring (2) on the basis of a barrel body (71) of an extension steel lantern ring (7), and installing a third water stop ring (3), a circular ring plate (4) and a turning plate (6) on the basis of a tail end ring plate (72) of the extension steel lantern ring (7) through a connecting bolt (5);

and c), after the shield tunneling machine is debugged, the assembled negative ring is pushed forward, the cutter head is close to the enclosure pile wall (10) provided with the glass fiber ribs, and the underground diaphragm wall is broken.

Background

In the field of civil engineering quantity, tunnel excavation is often carried out by adopting a shield machine, and a working well and a retaining structure are required to be implemented in the initial excavation process of the shield machine; in order to facilitate shield starting, a shield hole is usually reserved in a lining of a starting working well, but a building enclosure on the outer side of the lining needs to be manually broken after being reinforced by adopting an end due to the arrangement of reinforcing steel bars. In recent years, in order to reduce labor and improve mechanical efficiency, a fender pile (wall) provided with glass fiber ribs is provided. Glass fiber ribs are adopted to replace reinforcing steel bars in the shield tunneling channel, and the shield tunneling machine can directly conduct tunneling operation.

When the muddy water shield machine directly breaks the glass fiber rib enclosure structure, the thickness of the lining wall is basically equal to that of a cutter head of the shield machine, conventional water stopping curtain cloth at a tunnel portal is easy to be rolled into the cutter head to cause damage of a water stopping device, so that leakage at the tunnel portal is caused, the muddy water chamber is difficult to build and the shield machine cannot be started, meanwhile, the ground settlement is easy to cause long-term leakage at the tunnel portal, and casualties and property loss can be caused in serious cases.

Based on the above, a starting structure and a construction method of a slurry shield adopting a glass fiber reinforced enclosure are needed to be provided, so that the problem of hole leakage caused by the fact that a hole water stop curtain is rolled into a cutter head when the slurry shield breaks the glass fiber reinforced enclosure can be solved.

Disclosure of Invention

The invention aims to provide an originating structure and a construction method of a slurry shield which is protected by glass fiber ribs and improves the sealing performance.

In order to achieve the purpose, the starting structure of the slurry shield using the glass fiber reinforced plastic for containment comprises a first water stop ring, a second water stop ring, a third water stop ring, a circular ring plate, a connecting bolt, a turning plate and an extension steel lantern ring, wherein the extension steel lantern ring is fixed on the outer side of a working well lining on the outer side of a containment pile wall, the first water stop ring, the second water stop ring and the extension steel lantern ring are rigidly connected into a whole, the third water stop ring is connected with the tail part of the extension steel lantern ring, the circular ring plate is positioned on the outer side of the third water stop ring, the turning plate is positioned on the outer side of the circular ring plate, and the connecting bolt is used for installing the third water stop ring and the circular ring plate on the extension steel lantern ring.

In the technical scheme, the extension steel sleeve comprises a barrel body and a tail end ring plate, the barrel body is of a cylindrical structure, the axis of the barrel body coincides with the shield tunneling central line, the barrel body is rigidly connected with the embedded steel ring of the working well lining, and the tail end ring plate is located at the tail end of the barrel body and is rigidly connected with the barrel body.

In the technical scheme, the length of the cylinder body is 1000-1500 mm, and the thickness of the steel plate is 20-40 mm; the tail end annular plate is an annular plate, and the axis of the tail end annular plate is superposed with the central line of the cylinder body; the tail end ring plate is made of a steel plate, and the ring width is 100-200 mm.

In the above technical scheme, the upper ends of the first water stop ring and the second water stop ring are fixed on the inner side of the cylinder wall of the cylinder body.

In the technical scheme, the first water stop ring and the second water stop ring adopt shield tail sealing steel wire brushes and are fixed with the barrel body through welding, and the third water stop ring adopts a cord fabric rubber plate.

In the technical scheme, the distance between the first water stop ring and the second water stop ring is 200-500 mm, and the distance between the second water stop ring and the tail end ring plate is 600-1000 mm.

In the technical scheme, the turning plate is located on the outer side of the circular ring plate and comprises a turning plate fixing plate, a turning plate pin sleeve and a turning plate rotating plate, the fixing plate is connected to the lower edge of the outer side of the circular ring plate, the turning plate pin sleeve is installed on the lower edge of the fixing plate to be rotatably connected with the turning plate rotating plate, and the turning plate rotating plate is located on the outer side of the lower portion of the three water stop rings.

In the technical scheme, the steel well structure further comprises stiffening plates, wherein the stiffening plates comprise longitudinal stiffening plates and circumferential stiffening plates, the longitudinal stiffening plates are rectangular steel plates, are positioned between the working well lining and the tail end ring plate, and are uniformly arranged along the circumference of the extension steel lantern ring; the circumferential stiffening plates are fan-shaped steel plates and are positioned between the longitudinal stiffening plates; and the longitudinal stiffening plate is respectively welded with the embedded steel ring, the cylinder body and the tail end ring plate.

In the technical scheme, the thickness of the longitudinal stiffening plate is 10-20 mm, and 60-80 longitudinal stiffening plates are arranged; the thickness of the annular stiffening plate is 10-20 mm.

In order to achieve the purpose, the construction method of the starting structure of the slurry shield adopting the glass fiber reinforced enclosure comprises the following steps:

step a), utilizing an embedded steel ring of a working well lining as a welding working surface, and welding and installing an extension steel sleeve ring and a stiffening plate;

b), mounting a first water stop ring and a second water stop ring based on the barrel body of the extension steel lantern ring, and mounting a third water stop ring, a circular ring plate and a turning plate based on the tail end ring plate of the extension steel lantern ring through connecting bolts;

and c), after the shield tunneling machine is debugged, assembling the negative ring to push forward, arranging the enclosure pile wall with the glass fiber ribs on the cutter head, and breaking the diaphragm wall.

The invention has the beneficial effects that: according to the starting structure and the construction method of the slurry shield adopting the glass fiber reinforcement for containment, the distance between the cord fabric rubber plate and the shield machine head is enlarged by extending the steel lantern ring, and the problem that the cord fabric rubber plate is stirred into the shield machine head to be damaged by a cutter head when a containment pile wall provided with glass fiber reinforcements is broken by the shield machine is solved; meanwhile, the water-proof ring and the two water-proof rings are arranged to form a multi-bin interval, so that the waterproof performance of the starting structure is further enhanced.

Drawings

FIG. 1 is a schematic cross-sectional structure diagram of an originating structure of a slurry shield using a glass fiber reinforced plastic enclosure according to the present invention;

FIG. 2 is a schematic construction diagram of an originating structure of a slurry shield using the glass fiber reinforced plastic enclosure in FIG. 1.

The components in the figures are numbered as follows: the water-stop device comprises a first water-stop ring 1, a second water-stop ring 2, a third water-stop ring 3, a circular ring plate 4, a connecting bolt 5, a turning plate 6 (wherein the turning plate fixing plate 61, a turning plate pin sleeve 62 and a turning plate rotating plate 63), an extension steel lantern ring 7 (wherein the barrel body 71 and the tail end circular plate 72), a stiffening plate 8 (wherein the longitudinal stiffening plate 81 and the circular stiffening plate 82), a working well lining 9 and a retaining pile wall 10 configured with glass fiber reinforced plastics.

Detailed Description

The invention is described in further detail below with reference to the figures and the specific embodiments.

Based on the problems that when a slurry shield machine directly breaks a glass fiber reinforced plastic enclosure structure in the prior art, a cutter head is easily involved in the damage of a water stopping device due to the water stopping curtain cloth at a tunnel opening, the leakage of the tunnel opening, the pressure building difficulty of a slurry cabin and the incapability of starting the shield are caused, the application provides a starting structure and a construction method of the slurry shield machine adopting the glass fiber reinforced plastic enclosure structure, and the water stopping performance of the slurry shield machine adopting the glass fiber reinforced plastic enclosure structure when the glass fiber reinforced plastic enclosure structure is broken is ensured.

Referring to fig. 1 and fig. 2 in combination, the starting structure of the slurry shield using the glass fiber reinforced plastic enclosure according to the embodiment of the present invention includes a first water stop ring 1, a second water stop ring 2, a third water stop ring 3, a circular plate 4, a connecting bolt 5, a turning plate 6, an extension steel collar 7, and a stiffening plate 8. The extension steel lantern ring 7 is fixed on the outer side of a working well lining 9 on the outer side of the enclosure pile wall 10, the first water stop ring 1, the second water stop ring 2 and the extension steel lantern ring 7 are rigidly connected into a whole, the third water stop ring 3 is connected with the tail of the extension steel lantern ring 7, the circular ring plate 4 is located on the outer side of the third water stop ring 3, the turning plate 6 is located on the outer side of the circular ring plate 4, and the connecting bolt 5 is used for installing the third water stop ring 3 and the circular ring plate 4 on the extension steel lantern ring 7.

One sealing ring 1 is located tunnel entrance, and extension steel lantern ring 7 is located the tunnel entrance outside, links to each other with extension steel lantern ring 7, constitutes first stagnant water structure.

The second water stop ring 2 is positioned on the outer side of the first water stop ring 1 and connected with the extension steel lantern ring 7 to form a second water stop structure.

In the embodiment shown in the figure, the distance between the first water stop ring 1 and the second water stop ring 2 is 400 mm; the distance between the two water stop rings 2 and the tail end of the extension steel lantern ring 7 (namely the tail end ring plate 72) is 800 mm. In other embodiments, the distance between the first water stop ring 1 and the second water stop ring 2 is 200-500 mm, and the distance between the second water stop ring 2 and the tail end of the extension steel lantern ring 7 is 600-1000 mm.

The third water stop ring 3 is positioned at the outer side of the second water stop ring 2 and is connected with the tail part of the extension steel lantern ring 7 to form a third water stop structure.

In the illustrated embodiment, the first water stop ring 1 and the second water stop ring 2 adopt a shield tail sealing steel wire brush, and the first water stop ring 1 and the second water stop ring 2 are welded and fixed on the inner side of the cylinder wall of the cylinder body 71; the three water stop rings 3 are made of cord fabric rubber plates.

The circular ring plate 4 is positioned on the outer side of the three water stop rings 3, the outer side of the upper parts of the three water stop rings 3 is pressed, and the circular ring plate 4 and the upper parts of the three water stop rings 3 are installed to the extension steel lantern ring 7 through the connecting bolts 5.

The turning plate 6 is positioned outside the circular ring plate 4. The flap 6 comprises a flap fixing plate 61, a flap pin sleeve 62 and a flap rotating plate 63. The fixed plate 61 is connected to the outer lower edge of the circular ring plate 4, and the flap pin sleeve 62 is mounted on the lower edge of the fixed plate 61 to rotatably connect the flap rotating plate 63. The turning plate rotating plate 63 is positioned at the outer side of the lower part of the three water stop rings 3.

The extension steel lantern ring 7 comprises a barrel body 71 and a tail end ring plate 72; the working well lining 9 comprises an embedded steel ring 91 and a lining wall 92; the cylinder body 71 of the extension steel lantern ring 7 is rigidly connected with the embedded steel ring 91, and the tail end ring plate 72 is positioned at the tail end of the cylinder body 71 and rigidly connected with the cylinder body 71. The barrel body 71 is a cylindrical structure, and the axis is superposed with the shield tunneling central line.

In the illustrated embodiment, the length of the barrel 71 is 1500mm, and the thickness of the steel plate is 20 mm; the tail end annular plate 72 is an annular plate, the axis of the annular plate coincides with the center line of the cylinder body 71, the tail end annular plate 72 is made of a steel plate, and the width of the ring is 150 mm. In other embodiments, the length of the cylinder 71 is 1000-1500 mm, and the thickness of the steel plate is 20-40 mm; the ring width of the tail end ring plate 72 is 100-200 mm.

The stiffening plate 8 is composed of a longitudinal stiffening plate 81 and a circumferential stiffening plate 82. The longitudinal stiffening plates 81 are rectangular steel plates, are positioned between the working well lining 9 and the tail end annular plate 72 of the extension steel lantern ring 7, and are uniformly arranged along the circumference of the extension steel lantern ring 7. The circumferential stiffening plates 82 are fan-shaped steel plates and are positioned between the longitudinal stiffening plates 81; the longitudinal stiffening plate 81 is respectively welded with the embedded steel ring 91, the cylinder body 71 and the tail end ring plate 72.

In the illustrated embodiment, the longitudinal stiffener plates 81 have a thickness of 10mm, and 72 pieces are provided; the circumferential stiffening plate 82 has a thickness of 10 mm. In other embodiments, the thickness of the longitudinal stiffening plate 81 is 10-20 mm, and 60-80 channels are provided; the thickness of the annular stiffening plate 82 is 10-20 mm.

The invention discloses a use method of a slurry shield starting structure enclosed by glass fiber ribs, which comprises the following steps:

step a), an embedded steel ring 91 of a working well lining 9 is used as a welding working surface, and an extension steel sleeve ring 7 and a stiffening plate 8 are welded and installed;

step b), mounting a first water stop ring 1 and a second water stop ring 2 based on a barrel body 71 of an extension steel lantern ring 7, and mounting a third water stop ring 3, a circular ring plate 4 and a turning plate 6 based on a tail end ring plate 72 of the extension steel lantern ring 7 through a connecting bolt 5;

and c), after the shield tunneling machine is debugged, the assembled negative ring is pushed forwards, the cutter head is close to the enclosure pile wall 10 provided with the glass fiber ribs, and the underground diaphragm wall is broken.

According to the starting structure and the construction method of the slurry shield adopting the glass fiber reinforcement for containment, the distance between the cord fabric rubber plate and the shield machine head is enlarged by extending the steel sleeve ring, and the multi-bin interval is formed by additionally arranging the two rigid water stop structures, so that the problem that the cord fabric rubber plate is stirred into the slurry shield by the cutter head to be damaged when the shield machine breaks the containment pile wall provided with the glass fiber reinforcement is solved. Meanwhile, the water-proof ring and the two water-proof rings are arranged to form a multi-bin interval, so that the waterproof performance of the starting structure is further enhanced.

By utilizing the starting structure and the construction method of the slurry shield which is surrounded by the glass fiber ribs, the problems of water seepage and slurry leakage of the tunnel portal in the starting process can be effectively solved, the risk that the curtain cloth rubber plate of the tunnel portal is damaged can be avoided, and the starting structure and the construction method are simple and flexible to operate, low in use cost and high in practicability.

The above-mentioned embodiments only express a certain implementation mode of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.