1. A construction method of a hidden double-layer manhole cover inspection well is characterized by comprising the following steps: the inspection well comprises a lower well lid concrete base (8), a concrete base angle bead (9), a lower well lid embedded part (10), a lower well lid (2), a lower well lid concrete retaining wall (7), embedded steel bars (5), an upper well lid base embedded part (4), a rubber gasket (6), an upper well lid base (3) and an upper well lid (1), and the following steps are adopted:

the method comprises the following steps: firstly, constructing a well body of the inspection well, and adopting a brick or finished reinforced concrete inspection well according to a drawing;

step two: constructing a lower layer well lid reinforced concrete base (8) at the upper opening of a well body, pouring C35 concrete, placing a lower layer well lid embedded part (10) in the concrete, and welding and fixing the lower layer well lid embedded part (10) and a well ring of a lower layer well lid (2);

step three: after the construction of the reinforced concrete base is finished, the concrete base corner protector (9) is constructed outside, and 1:3 cement mortar is adopted, so that the displacement of the reinforced concrete base can be effectively prevented;

step four: pouring a lower layer well lid concrete retaining wall (7) on the upper portion of the reinforced concrete base, adopting C35 concrete for pouring, embedding reinforcing steel bars in the lower layer well lid concrete retaining wall, adopting reinforcing steel bars with the diameter of 14mm to be welded and fixed with the upper layer well lid base embedded part (4), exposing the reinforcing steel bars out of the lower layer well lid concrete retaining wall (7) by 15mm, and placing a rubber gasket (6) in the gap to play a role in cushioning;

step five: the upper-layer manhole cover base embedded part (4) is made of a stainless steel plate with the thickness of 5mm and is welded and fixed with the embedded steel bar (5);

step six: placing an upper well cover base (3) on an upper well cover base embedded part (4), and customizing the upper well cover base by adopting a stainless steel material for supporting an upper well cover;

step seven: the upper layer well cover (1) is paved, and the lower well body and the well cover can be hidden.

2. The construction method of the hidden double-layer manhole cover inspection well as claimed in claim 1, wherein: and the lower layer well lid concrete base (8) is formed by pouring reinforced concrete on the upper part of a well mouth into the well ring base after the construction of the inspection well body is completed, and the height of the well ring base is 300 mm.

3. The construction method of the hidden double-layer manhole cover inspection well as claimed in claim 1, wherein: lower floor's well lid built-in fitting (10) adopt 12mm thick steel board as the built-in fitting for fixed lower floor's cast iron well lid walling crib prevents that the walling crib from causing because of external load and sinks.

4. The construction method of the hidden double-layer manhole cover inspection well as claimed in claim 1, wherein: the rubber gasket (6) is made of 10mm rubber.

5. The construction method of the hidden double-layer manhole cover inspection well as claimed in claim 1, wherein: the upper well cover base (3) is made of stainless steel with the thickness of 5 mm.

6. The construction method of the hidden double-layer manhole cover inspection well as claimed in claim 1, wherein: the upper well lid (1) is a cast iron cover plate and is used for supporting upper load and facilitating underground maintenance and cleaning.

Background

At present, in the construction of outdoor pipe network engineering of building engineering, a road or a sidewalk including a green belt is provided with a plurality of types of pipelines and inspection wells, including a sewage well, a water supply pipeline, a rainwater pipeline, a fire fighting pipeline and the like. The manhole covers are generally arranged to be flush with the pavement or a pavement surface layer, and due to the fact that the number of the manhole covers is large, the attractiveness of the pavement is affected, and the manhole covers sink or are crushed after long-time passing of vehicles and pedestrians, so that serious potential safety hazards are caused to passing vehicles and pedestrians; and the maintenance is frequently carried out at the later stage, so that not only is the frequent maintenance cost higher, but also the image of an enterprise is seriously influenced.

Disclosure of Invention

The invention aims to provide a construction method of a hidden double-layer manhole cover, which is simple and convenient to operate, stable in structure, high in safety factor and reliable in quality, solves the problem that each professional pipeline manhole cover and manhole cover are complicated and influence the appearance of a pavement or a sidewalk surface layer, and prevents potential safety hazards caused by crushing by vehicles and pedestrians in the later period.

In order to achieve the purpose, the invention provides the following technical scheme:

a hidden double-layer manhole cover inspection well construction method is characterized in that an inspection well comprises a lower layer manhole cover concrete base, a concrete base angle bead, a lower layer manhole cover embedded part, a lower layer manhole cover concrete retaining wall, embedded steel bars, an upper layer manhole cover base embedded part, a rubber gasket, an upper layer manhole cover base and an upper layer manhole cover, and the following steps are adopted:

the method comprises the following steps: firstly, constructing a well body of the inspection well, and adopting a brick or finished reinforced concrete inspection well according to a drawing;

step two: constructing a lower layer well lid reinforced concrete base at the upper opening of a well body, pouring C35 concrete, placing a lower layer well lid embedded part in the concrete, and welding and fixing the lower layer well lid embedded part and a well ring of a lower layer well lid;

step three: after the construction of the reinforced concrete base is finished, constructing concrete base angle protectors outside, and adopting 1:3 cement mortar, the reinforced concrete base can be effectively prevented from displacing;

step four: pouring a lower layer of well lid concrete retaining wall on the upper portion of the reinforced concrete base, adopting C35 concrete for pouring, embedding reinforcing steel bars in the reinforced concrete base, adopting reinforcing steel bars with the diameter of 14mm to be welded and fixed with the embedded parts of the upper layer of well lid base, exposing the reinforcing steel bars out of the lower layer of well lid concrete retaining wall by 15mm, and placing rubber gaskets in the gaps to play a role in cushioning;

step five: the upper-layer well cover base embedded part is made of a stainless steel plate with the thickness of 5mm and is welded and fixed with the embedded steel bars;

step six: placing the upper-layer well cover base on the upper-layer well cover base embedded part, customizing the upper-layer well cover base by adopting a stainless steel material and supporting the upper-layer well cover;

step seven: the upper well cover can be paved to hide the lower well body and the well cover.

Further, lower floor well lid concrete base is after inspection shaft body construction is accomplished, at well head upper portion with reinforced concrete pouring walling crib base, highly is 300 mm.

Further, the well lid built-in fitting of lower floor adopts 12mm thick steel plate as the built-in fitting for fixed lower floor's cast iron well lid walling crib prevents that the walling crib from causing because of external load and sinks.

Furthermore, the rubber gasket is made of 10mm rubber.

Furthermore, the upper-layer well cover base is made of stainless steel with the thickness of 5 mm.

Furthermore, the upper well cover is a cast iron cover plate and is used for supporting upper load and facilitating underground maintenance and cleaning.

Compared with the prior art, the invention has the beneficial effects that:

the construction method of the hidden double-layer manhole cover inspection well provided by the invention is provided with the upper layer manhole cover and the lower layer manhole cover, the lower layer manhole cover and the manhole seat thereof have high strength, the upper layer manhole cover can effectively bear upper load and is convenient for underground maintenance and cleaning, and the upper layer manhole cover can play a role in hiding the inspection well body. The manhole cover has the advantages that the structure is simple, the strength is high, the quality of the manhole seat is guaranteed, and potential safety hazards caused by sinking of the manhole cover due to walking of vehicles or pedestrians can be effectively avoided; meanwhile, the lower well body and the well cover are hidden, so that the surface of the road or the sidewalk is concise and attractive.

Drawings

Fig. 1 is a schematic structural view of the present invention.

In the figure: 1. upper well lid, 2, lower floor's well lid, 3, upper well lid base, 4, upper well lid base buries the piece, 5, embedded bar, 6, rubber gasket, 7, lower floor's well lid concrete retaining wall, 8, lower floor's well lid concrete base, 9, concrete base angle bead, 10, lower floor's well lid built-in fitting.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, in the embodiment of the present invention: a hidden double-layer manhole cover inspection well construction method is characterized in that an inspection well comprises a lower layer manhole cover concrete base 8, a concrete base angle bead 9, a lower layer manhole cover embedded part 10, a lower layer manhole cover 2, a lower layer manhole cover concrete retaining wall 7, embedded steel bars 5, an upper layer manhole cover base embedded part 4, a rubber gasket 6, an upper layer manhole cover base 3 and an upper layer manhole cover 1, and the following steps are adopted:

the method comprises the following steps: firstly, constructing a well body of the inspection well, and adopting a brick or finished reinforced concrete inspection well according to a drawing;

step two: constructing a lower layer well lid reinforced concrete base 8 at the upper opening of a well body, pouring C35 concrete, placing a lower layer well lid embedded part 10 in the concrete, and welding and fixing the lower layer well lid embedded part 10 and a well ring of a lower layer well lid 2, so that the lower layer well lid 2 can be effectively prevented from being displaced due to the walking of an upper vehicle;

step three: after the construction of the reinforced concrete base is finished, constructing a concrete base corner protector 9 on the outside, and adopting 1:3 cement mortar, so that the displacement of the reinforced concrete base can be effectively prevented;

step four: pouring a lower layer of well lid concrete retaining wall 7 on the upper portion of the reinforced concrete base, adopting C35 concrete for pouring, embedding reinforcing steel bars in the lower layer of well lid concrete retaining wall, adopting reinforcing steel bars with the diameter of 14mm to be welded and fixed with the upper layer of well lid base embedded part 4, exposing the reinforcing steel bars out of the lower layer of well lid concrete retaining wall by 15mm, and placing a rubber gasket 6 in the gap to play a role in cushioning;

step five: the upper-layer well cover base embedded part 4 is made of a stainless steel plate with the thickness of 5mm and is welded and fixed with the embedded steel bars 5, and the stainless steel embedded part can effectively prevent the steel plate from being corroded due to rainwater to cause aging, so that the quality of a well body is influenced;

step six: placing an upper-layer well cover base 3 on an upper-layer well cover base embedded part 4, customizing the upper-layer well cover base by adopting a stainless steel material and supporting an upper-layer well cover;

step seven: the upper well lid 1 of mating formation can hide lower part well body and well lid, plays pleasing to the eye effect, makes whole road or pavement succinct pleasing to the eye, can prevent effectively that the vehicle from rolling for a long time and causing the well lid to sink.

According to the construction method of the hidden double-layer manhole cover inspection well, the quality of a well body is stable and reliable, and the phenomenon that the manhole cover sinks or is crushed due to long-time passing of vehicles and pedestrians can be effectively prevented. And the potential safety hazard is greatly reduced, and the serious potential safety hazard to passing vehicles and pedestrians caused by the sinking of the well cover is avoided, so that the enterprise image is influenced. <3> the appearance is succinct pleasing to the eye, and hidden characteristics make road or pavement on well body upper portion succinct pleasing to the eye.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.