阅读说明：本技术 综合管廊出线支管位置防水结构及防水施工方法 (Comprehensive pipe gallery outlet branch pipe position waterproof structure and waterproof construction method ) 是由 王纯岩 李建明 卓书晓 冀鸣翰 苗靖 刘志彬 于 2021-06-29 设计创作，主要内容包括：本发明涉及一种综合管廊出线支管位置防水结构及防水施工方法,所述防水结构包括预埋在综合管廊与检查井之间的穿线管,穿线管的两端分别位于综合管廊和检查井中；其中,穿线管位于检查井中的一端设有弹性橡胶封堵,弹性橡胶封堵呈锥形筒状结构；穿线管位于综合管廊中的一端的下方设有接水槽,接水槽的底部设有输水管,输水管的下端通入排水沟。本发明通过在穿线管位于检查井的一端设置弹性橡胶封堵,能够在穿设管线前和穿设管线后均起到密封防水的作用；通过在穿线管位于综合管廊的一端下方设置接水槽和输水管,能够将穿线管渗漏的水引入管廊底部的排水沟,避免渗漏的水污染管廊墙壁。该防水结构制作简单,方便安装,施工成本低,防水效果好。(The invention relates to a waterproof structure and a waterproof construction method for an outlet branch pipe position of a comprehensive pipe gallery, wherein the waterproof structure comprises a threading pipe which is pre-embedded between the comprehensive pipe gallery and an inspection well, and two ends of the threading pipe are respectively positioned in the comprehensive pipe gallery and the inspection well; wherein, one end of the threading pipe in the inspection well is provided with an elastic rubber plug which is in a conical cylindrical structure; the below that the threading pipe is located the one end in the utility tunnel is equipped with the water receiving tank, and the bottom of water receiving tank is equipped with the raceway, and the lower extreme of raceway lets in the escape canal. According to the invention, the elastic rubber plug is arranged at one end of the threading pipe, which is positioned in the inspection well, so that the functions of sealing and water proofing can be achieved before and after the pipeline is penetrated; set up water receiving tank and raceway through the one end below that is located utility tunnel at the threading pipe, can introduce the escape canal of piping lane bottom with the water of threading pipe seepage, avoid the water pollution piping lane wall of seepage. The waterproof structure is simple to manufacture, convenient to install, low in construction cost and good in waterproof effect.)

1. A waterproof structure for an outlet branch pipe position of a comprehensive pipe rack is characterized by comprising a threading pipe pre-buried between the comprehensive pipe rack and an inspection well, wherein two ends of the threading pipe are respectively positioned in the comprehensive pipe rack and the inspection well; wherein the content of the first and second substances,

one end of the threading pipe, which is positioned in the inspection well, is provided with an elastic rubber plug which is in a conical cylindrical structure; the utility model discloses a utility tunnel, including utility tunnel, threading pipe, raceway, be equipped with the water receiving tank below the one end that the threading pipe is located utility tunnel, the bottom of water receiving tank is equipped with the raceway, the lower extreme of raceway lets in the escape canal.

2. The utility model discloses a utility tunnel outlet branch pipe position waterproof construction of claim 1, characterized in that, the one end of elasticity rubber shutoff is equipped with connection port, elasticity rubber shutoff fixed connection is in on connection port, elasticity rubber shutoff passes through connection port and connects on the threading pipe.

3. The utility model discloses a utility tunnel outlet branch pipe position waterproof construction of claim 2, characterized in that, the one end that the threading pipe is located in the inspection shaft is equipped with the external screw thread, be equipped with on the connection port with external screw thread assorted internal thread, connection port threaded connection is in on the threading pipe.

4. The utility model discloses a utility tunnel outlet branch pipe position waterproof construction of claim 3, characterized in that, the threaded connection department of connection port and threading pipe is provided with sealed waterproof glue.

5. The utility model discloses a utility tunnel outlet branch pipe position waterproof construction of claim 1, characterized in that, the surface of elasticity rubber shutoff is equipped with the scale mark, mark scale interval near the scale mark, the scale interval of scale mark department corresponds with the internal diameter of the elasticity rubber shutoff of scale mark position.

6. The utility model discloses a utility tunnel outlet branch pipe position waterproof construction of claim 1, characterized in that, the wall thickness of elasticity rubber shutoff is 3mm ~ 5 mm.

7. The utility model discloses a utility tunnel outlet pipe branch position waterproof construction of claim 1, characterized in that, the water receiving tank sets firmly on the wall of utility tunnel, the diapire slope of water receiving tank sets up, the raceway is connected at the minimum of water receiving tank diapire.

8. The utility model discloses a utility tunnel outlet pipe branch position waterproof construction of claim 7, characterized in that, a lateral wall laminating of water receiving tank is on the wall of utility tunnel, the minimum of water receiving tank bottom wall is located one side of the wall of utility tunnel, the water receiving tank passes through the peg fixed connection on the wall of utility tunnel, the raceway passes through buckle and peg fixed connection on the wall of utility tunnel.

9. The utility model discloses a utility tunnel outlet branch pipe position waterproof construction of claim 7, characterized in that, the water receiving tank adopts galvanized steel sheet or stainless steel board to make, the raceway adopts galvanized steel pipe or stainless steel pipe to make.

10. A waterproof construction method for the outlet branch pipe position of a utility tunnel is characterized in that the waterproof construction method adopts the waterproof structure for the outlet branch pipe position of the utility tunnel according to any one of claims 1 to 9, and comprises the following steps:

embedding a threading pipe, namely embedding the threading pipe between the comprehensive pipe gallery and the inspection well in the construction process of the comprehensive pipe gallery, and arranging two ends of the threading pipe at preset distances from the wall of the comprehensive pipe gallery and the wall of the inspection well respectively;

installing a water receiving tank, namely installing the water receiving tank below one end of the threading pipe in the comprehensive pipe gallery, installing a water conveying pipe at the bottom of the water receiving tank, and introducing a water outlet at the lower end of the water conveying pipe into a drainage ditch in the comprehensive pipe gallery;

installing an elastic rubber plug, namely installing the elastic rubber plug at one end of the threading pipe in the inspection well, and plugging one end port of the threading pipe in the inspection well;

a pipeline penetrating step, namely cutting an elastic rubber plug of a threading pipe at one end of an inspection well according to the diameter of a pipeline to be penetrated into the inspection well from a comprehensive pipe gallery, wherein the inner diameter of the elastic rubber plug at the cutting position is smaller than the diameter of the pipeline to be penetrated into the inspection well; and (4) penetrating the pipeline into the inspection well from the through pipe of the comprehensive pipe gallery, and filling a sealant between the two ends of the through pipe and the pipeline for sealing treatment.

Technical Field

The invention relates to the technical field of municipal engineering, in particular to a comprehensive pipe gallery outlet branch pipe position waterproof structure and a waterproof construction method.

Background

The utility tunnel is an underground urban pipeline utility tunnel, namely, a tunnel space is built underground in a city, various engineering pipelines such as electric power, communication, gas, heat supply, water supply and drainage and the like are integrated, a special overhaul port, a lifting port and a monitoring system are arranged, unified planning, unified design, unified construction and management are implemented, and the utility tunnel is an important infrastructure and a 'lifeline' for guaranteeing urban operation.

Cable in the conventional utility tunnel, tubular product need be connected with outside inspection shaft, go out a piping lane's a pipeline pipe end, be equipped with the threading pipe between utility tunnel and the outside inspection shaft, and after the later stage threading pipe, adopt the sealant to fill up the gap between pipeline and the threading pipe, sealed effect is not good, in rainwater sewage flows backwards to utility tunnel in leading to the inspection shaft, pollute piping lane inner wall, influence the whole of the indoor wall of piping lane pleasing to the eye, also probably the flooding piping lane simultaneously, damage fortune dimension equipment in the piping lane.

Disclosure of Invention

In view of the above, the invention aims to provide a waterproof structure and a waterproof construction method for the outlet branch pipe position of a comprehensive pipe rack, and aims to solve the problems in the prior art.

According to the first aspect of the invention, a waterproof structure for the outlet branch pipe position of a comprehensive pipe rack is provided, wherein the waterproof structure comprises a threading pipe pre-buried between the comprehensive pipe rack and an inspection well, and two ends of the threading pipe are respectively positioned in the comprehensive pipe rack and the inspection well; wherein the content of the first and second substances,

one end of the threading pipe, which is positioned in the inspection well, is provided with an elastic rubber plug which is in a conical cylindrical structure; the utility model discloses a utility tunnel, including utility tunnel, threading pipe, raceway, be equipped with the water receiving tank below the one end that the threading pipe is located utility tunnel, the bottom of water receiving tank is equipped with the raceway, the lower extreme of raceway lets in the escape canal.

Preferably, one end of the elastic rubber plug is provided with a connecting port, the elastic rubber plug is fixedly connected to the connecting port, and the elastic rubber plug is connected to the threading tube through the connecting port.

Preferably, the threading pipe is located one end in the inspection shaft is equipped with the external screw thread, be equipped with on the connection port with external screw thread assorted internal thread, connection port threaded connection be in on the threading pipe.

Preferably, a sealing waterproof glue is arranged at the threaded connection position of the connection port and the threading pipe.

Preferably, the outer surface of the elastic rubber plug is provided with scale marks, scale values are marked near the scale marks, and the scale values at the scale marks correspond to the inner diameter of the elastic rubber plug at the scale marks.

Preferably, the wall thickness of the elastic rubber plug is 3 mm-5 mm.

Preferably, the water receiving tank is fixedly arranged on the wall of the comprehensive pipe gallery, the bottom wall of the water receiving tank is obliquely arranged, and the water delivery pipe is connected to the lowest point of the bottom wall of the water receiving tank.

Preferably, a lateral wall laminating of water receiving tank is in on the wall of utility tunnel, the minimum of water receiving tank diapire is located utility tunnel's wall one side, the water receiving tank passes through peg fixed connection and is in on the wall of utility tunnel, the raceway passes through buckle and peg fixed connection and is in on the wall of utility tunnel.

Preferably, the water receiving tank is made of a galvanized steel plate or a stainless steel plate, and the water delivery pipe is made of a galvanized steel pipe or a stainless steel pipe.

According to a second aspect of the invention, a waterproof construction method for the outlet branch pipe position of the utility tunnel is provided, the waterproof construction method adopts the above waterproof structure for the outlet branch pipe position of the utility tunnel, and the waterproof construction method comprises the following steps:

embedding a threading pipe, namely embedding the threading pipe between the comprehensive pipe gallery and the inspection well in the construction process of the comprehensive pipe gallery, and arranging two ends of the threading pipe at preset distances from the wall of the comprehensive pipe gallery and the wall of the inspection well respectively;

installing a water receiving tank, namely installing the water receiving tank below one end of the threading pipe in the comprehensive pipe gallery, installing a water conveying pipe at the bottom of the water receiving tank, and introducing a water outlet at the lower end of the water conveying pipe into a drainage ditch in the comprehensive pipe gallery;

installing an elastic rubber plug, namely installing the elastic rubber plug at one end of the threading pipe in the inspection well, and plugging one end port of the threading pipe in the inspection well;

a pipeline penetrating step, namely cutting an elastic rubber plug of a threading pipe at one end of an inspection well according to the diameter of a pipeline to be penetrated into the inspection well from a comprehensive pipe gallery, wherein the inner diameter of the elastic rubber plug at the cutting position is smaller than the diameter of the pipeline to be penetrated into the inspection well; and (4) penetrating the pipeline into the inspection well from the through pipe of the comprehensive pipe gallery, and filling a sealant between the two ends of the through pipe and the pipeline for sealing treatment.

According to the waterproof structure and the waterproof construction method for the outlet branch pipe position of the comprehensive pipe gallery, the elastic rubber plug is arranged at one end, located in the inspection well, of the threading pipe, the threading pipe can be plugged before the pipeline is threaded, and rainwater and sewage in the inspection well are prevented from flowing back into the comprehensive pipe gallery through the threading pipe; when a pipeline is penetrated, cutting can be carried out at a proper position of the elastic rubber plug according to the diameter of the pipeline, so that the elastic rubber plug can tightly wrap the pipeline through the elasticity of the elastic rubber plug after the pipeline passes through, and the effect of sealing and stopping water is achieved; set up water receiving tank and raceway through the one end below that is located utility tunnel at the threading pipe, can introduce the escape canal with the water that leaks to utility tunnel through the threading pipe, avoided the condition emergence of the water pollution piping lane wall from the threading pipe seepage to utility tunnel. The waterproof structure is simple to manufacture, convenient to install, low in construction cost, good in waterproof effect and suitable for popularization and use.

Drawings

The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings.

Fig. 1 shows a structural schematic diagram of a waterproof structure for a position of an outlet branch pipe of a comprehensive pipe rack according to an embodiment of the invention.

Fig. 2 shows a schematic structural diagram of elastic rubber plugging in a waterproof structure for the outlet branch pipe position of the comprehensive pipe rack according to the embodiment of the invention.

Fig. 3 shows a schematic structural diagram of a water receiving tank and a water conveying pipe in a comprehensive pipe rack outlet branch pipe position waterproof structure according to an embodiment of the invention.

In the figure: threading pipe 1, elastic rubber shutoff 2, connection port 21, scale mark 22, water receiving tank 3, raceway 4, utility tunnel 5, escape canal 51, inspection shaft 6, peg 7, buckle 8.

Detailed Description

Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.

Referring to fig. 1, the invention provides a comprehensive pipe rack outlet branch pipe position waterproof structure, which comprises a threading pipe 1 pre-buried between a comprehensive pipe rack 5 and an inspection well 6, wherein two ends of the threading pipe 1 are respectively positioned in the comprehensive pipe rack 5 and the inspection well 6; wherein, one end of the threading pipe 1 in the inspection well 6 is provided with an elastic rubber plug 2, and the elastic rubber plug 2 is in a conical cylindrical structure; the utility model discloses a utility tunnel 5, including conduit 1, conduit 4, drain ditch 51, conduit 5, conduit 3, conduit 4, conduit 5 and conduit 3.

Utility tunnel outlet branch pipe position indicates the position of drawing forth the lateral pipe line to inspection shaft 6 in utility tunnel 5, and this utility tunnel outlet branch pipe position waterproof construction sets up elastic rubber shutoff 2 through the one end that is arranged in inspection shaft 6 at threading pipe 1, can seal the shutoff to threading pipe 1 before wearing to establish the pipeline, and the rainwater in the inspection shaft 6 before preventing to wear to establish the pipeline pollutes 5 walls of utility tunnel and ground through threading pipe 1 refluence in 5, destroys fortune dimension equipment in the piping lane even. When wearing to establish the pipeline, through cutting elastic rubber shutoff 2 in suitable position, the pipeline passes the back, and elastic rubber shutoff 2 can closely wrap up the pipeline through self elasticity, reaches the effect of sealed stagnant water. Set up water receiving tank 3 and raceway 4 through the one end below that is located utility tunnel 5 at threading pipe 1, can introduce escape canal 51 with the water that leaks to utility tunnel 5 through threading pipe 1, avoided the condition emergence of the water pollution piping lane wall from threading pipe 1 seepage to utility tunnel 5.

The elastic rubber plug 2 is made of rubber materials with good elasticity, in the embodiment, the elastic rubber plug 2 is made of butyl rubber, the butyl rubber has good chemical stability and thermal stability, and is heat-resistant, ageing-resistant and chemical-resistant, and can keep good elasticity when used in the inspection well 6, so that the pipeline is effectively wrapped, and a good waterproof sealing effect is achieved. The wall thickness of the elastic rubber plug 2 is 3 mm-5 mm, and the elastic rubber plug 2 with the proper wall thickness can be manufactured according to the diameter of the threading pipe 1 in specific implementation.

Furthermore, one end of the elastic rubber plug 2 is provided with a connecting port 21, the elastic rubber plug 2 is fixedly connected to the connecting port 21, and the elastic rubber plug 2 is connected to the threading tube 1 through the connecting port 21. Specifically, the conical bottom opening end of the elastic rubber plug 2 in a conical cylindrical structure is fixedly connected to the connecting port 21, the connecting port 21 can be manufactured by machining a round steel pipe, and the conical bottom end of the elastic rubber plug 2 is sleeved outside the connecting port 21 and is bonded and fixed by an adhesive. Referring to fig. 1 and 2, in this embodiment, an external thread is provided at one end of the conduit 1 located in the inspection well 6, an internal thread matched with the external thread is provided at the connection port 21, and the connection port 21 is connected to the conduit 1 in a threaded manner. In this embodiment, the thread length of the external thread provided on the threading pipe 1 is 100mm, and the external thread provided on the threading pipe 1 and the internal thread provided on the connection port 21 are fine threads, so that a good sealing effect can be achieved. In this embodiment, be provided with sealed waterproof glue in the threaded connection department of connection port 21 and threading pipe 1 to further increase the sealed effect of threaded connection department, prevent the seepage, sealed waterproof glue can adopt the thread sealing glue.

Furthermore, the outer surface of the elastic rubber plug 2 is provided with a scale mark 22, a scale value is marked near the scale mark 22, and the scale value at the scale mark 22 corresponds to the inner diameter of the elastic rubber plug 2 at the position of the scale mark 22. As shown in fig. 2, the graduation lines 22 are uniformly distributed along the generatrix direction of the cone, and the graduation value is a number which gradually increases from the top end to the bottom end of the cone. Through being equipped with scale mark 22 and scale interval at the surface of elasticity rubber shutoff 2, can conveniently cut elasticity rubber shutoff 2 according to the diameter of pipeline when wearing to establish the pipeline, make it can closely wrap up and seal the pipeline of wearing to establish. For example, the diameter of wearing to establish the pipeline is 60mm, can cut in the 2 surperficial 50 ~ 55mm scale value departments of elasticity rubber shutoff in order to make elasticity rubber shutoff 2 can be through self elasticity to the pipeline including sealed, the opening of elasticity rubber shutoff 2 slightly be less than the diameter of pipeline after cutting promptly to the opening part of cutting can take place elastic deformation when making the pipeline pass, thereby wear to establish at the pipeline and carry out closely the parcel to the pipeline after accomplishing, thereby play waterproof effect of sealing.

The water receiving tank 3 is of a tank-shaped structure with an open top, the water receiving tank 3 is fixedly arranged on the wall of the comprehensive pipe gallery 5, the bottom wall of the water receiving tank 3 is inclined, and the water delivery pipe 4 is connected to the lowest point of the bottom wall of the water receiving tank 3, so that water leaking into the water receiving tank 3 through the threading pipe 1 can be drained to the drainage ditch 51 through the water delivery pipe 4.

Referring to fig. 1 and 3, in this embodiment, a side wall of the water receiving tank 3 is attached to a wall of the utility tunnel 5, a lowest point of a bottom wall of the water receiving tank 3 is located on one side of the wall of the utility tunnel 5, the water receiving tank 3 is fixedly connected to the wall of the utility tunnel 5 through a stud 7, and the water delivery pipe 4 is fixedly connected to the wall of the utility tunnel 5 through a buckle 8 and a stud 7. Specifically, the peg 7 can be expansion bolts or embedded bolts, the buckle 8 is a U-shaped structure buckle, and the two ends of the U-shaped structure buckle are fixedly connected to the wall of the utility tunnel 5 through the peg 7.

In order to increase the corrosion resistance of the water receiving tank 3 and the water delivery pipe 4 and prolong the service life of the water receiving tank 3 and the water delivery pipe 4, the water receiving tank 3 is made of galvanized steel plates or stainless steel plates, and the water delivery pipe 4 is made of galvanized steel pipes or stainless steel pipes. In this embodiment, the water receiving tank 3 is assembled by galvanized steel plates to form a groove-shaped structure with an open top, and then is formed by welding, and the water delivery pipe 4 is made of galvanized steel pipes with a diameter of 30 mm.

The invention also provides a waterproof construction method for the outlet branch pipe position of the comprehensive pipe gallery, the waterproof construction method adopts the waterproof structure for the outlet branch pipe position of the comprehensive pipe gallery, and the waterproof construction method comprises the following steps:

pre-buried threading pipe step S1, in utility tunnel 5 work progress, pre-buried threading pipe 1 between utility tunnel 5 and inspection shaft 6, with the both ends of threading pipe 1 respectively with 5 walls of utility tunnel and the 6 wall of a well intervals of inspection shaft preset distance settings.

In the step, after the threading pipe 1 is pre-buried, the end part of one end of the threading pipe 1, which is positioned in the inspection well 6, is 150 mm-200 mm away from the wall of the inspection well 6, and meanwhile, an external thread is processed at one end of the threading pipe 1, which is positioned in the inspection well 6, so that the elastic rubber plug 2 is conveniently installed; make threading pipe 1 be located 5 one end tip distances utility tunnel 5 walls 50mm ~ 100mm of utility tunnel to make later stage water receiving tank 3 installation back, the tip of threading pipe 1 just in time is located water receiving tank 3, conveniently discharges into escape canal 51 through raceway 4 with the water of seepage in the threading pipe 1.

And a step S2 of mounting a water receiving tank, wherein the water receiving tank 3 is mounted below one end of the threading pipe 1, which is positioned in the comprehensive pipe gallery 5, the bottom of the water receiving tank 3 is provided with a water conveying pipe 4, and a water outlet at the lower end of the water conveying pipe 4 is led into a drainage ditch 51 in the comprehensive pipe gallery 5.

In this step, water receiving tank 3 is made in advance, sets up peg 7 (buried bolt in advance or expansion bolts) on utility tunnel 5's the wall during installation, sets up the bolt hole of peg 7 position and size looks adaptation on the lateral wall of water receiving tank 3 and 5 wall laminating of utility tunnel, with water receiving tank 3 through peg 7 fixed connection on utility tunnel 5 walls. Then install raceway 4, the apopore of seting up on the upper end of raceway 4 and the diapire of water receiving tank 3 is connected, and the lower extreme of raceway 4 lets in 5 bottom's of utility tunnel escape canal 51 to fix raceway 4 on 5's of utility tunnel wall through buckle 8 and peg 7.

And an elastic rubber plug installing step S3, installing an elastic rubber plug 2 at one end of the threading pipe 1 in the inspection well 6, and plugging one end port of the threading pipe 1 in the inspection well 6.

In this step, with the connection port 21 threaded connection of 2 one ends of elasticity rubber shutoff on the external screw thread of threading pipe 1 tip to set up sealed waterproof glue in connection port 21 and the threaded connection department of threading pipe 1, adopt sealed waterproof glue secondary reinforcement sealed, thereby play sealed waterproof effect better, prevent in the inspection shaft 6 that rain sewage from oozing to utility tunnel 5.

A pipeline penetrating step S4, cutting the elastic rubber plug 2 of the threading pipe 1 at one end of the inspection well 6 according to the diameter of the pipeline to be penetrated into the inspection well 6 from the comprehensive pipe gallery 5, wherein the inner diameter of the elastic rubber plug 2 at the cutting position is smaller than the diameter of the pipeline to be penetrated into the inspection well 6; will the pipeline passes through inspection shaft 6 from utility tunnel 5 through threading pipe 1 in, fills sealed glue between the both ends of threading pipe 1 and the pipeline and carries out sealing treatment.

In this step, before wearing to establish the pipeline, measure the diameter of waiting to penetrate the pipeline in inspection shaft 6, then cut elasticity rubber shutoff 2 according to the diameter, the scale value that generally carries out the cutting position to elasticity rubber shutoff 2 is less than 5 ~ 10mm of the diameter of the pipeline that waits to penetrate in inspection shaft 6, promptly to elasticity rubber shutoff 2 cutting back, the opening on elasticity rubber shutoff 2 is less than 5 ~ 10mm of pipeline diameter to make the pipeline pass the back, elasticity rubber shutoff 2 can closely wrap up the pipeline through self elasticity, thereby play waterproof effect of sealing. Due to the elasticity of the elastic rubber plug 2, even if the pipeline is bent, the elastic rubber plug 2 can deform along with the pipeline, and meanwhile, the sealing is kept. After the pipeline is worn to establish, fill sealed glue between both ends of threading pipe 1 and the pipeline and carry out secondary seal processing, fill sealed glue between one end that is arranged in utility tunnel 5 to threading pipe 1 promptly and the pipeline and carry out sealed water repellent treatment, fill sealed glue between cutting opening and the pipeline of elasticity rubber shutoff 2 and carry out sealed water repellent treatment to reach sealed water repellent effect better.

In conclusion, according to the comprehensive pipe gallery outlet branch pipe position waterproof structure and the waterproof construction method, the elastic rubber plug is arranged at one end, located in the inspection well, of the threading pipe, the threading pipe can be plugged before the pipeline is threaded, and rainwater and sewage in the inspection well are prevented from flowing back into the comprehensive pipe gallery through the threading pipe; when a pipeline is penetrated, cutting can be carried out at a proper position of the elastic rubber plug according to the diameter of the pipeline, so that the elastic rubber plug can tightly wrap the pipeline through the elasticity of the elastic rubber plug after the pipeline passes through, and the effect of sealing and stopping water is achieved; set up water receiving tank and raceway through the one end below that is located utility tunnel at the threading pipe, can introduce the escape canal with the water that leaks to utility tunnel through the threading pipe, avoided the condition emergence of the water pollution piping lane wall from the threading pipe seepage to utility tunnel. The waterproof structure is simple to manufacture, convenient to install, low in construction cost, good in waterproof effect and suitable for popularization and use.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

Finally, it should be noted that: it should be understood that the above examples are only for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.