CN115075362A - Sewage-removing and shunting transformation structure and method for combined underdrain - Google Patents

Abstract

The invention relates to the technical field of municipal drainage engineering, in particular to a structure and method for cleaning and diverting sewage from a confluence and culvert, including a culvert section, an upstream open section and a downstream open section connected; Drainage outlet; also includes rainwater pipes, sewage pipes and municipal sewage wells. The rainwater pipes are arranged in the underdrain body, and the two ends of the rainwater pipes are respectively extended to the upstream Mingchong section and the downstream Mingchong section; the two ends of the underdrain body are respectively closed by plain concrete The two ends of the rainwater pipe are respectively fixed by plain concrete; the underdrain body is connected with the municipal sewage well through the sewage pipe. The invention transforms the existing confluence culvert into a closed sewage channel and connects it to the municipal sewage well, and sets up a rainwater pipe in the culvert body to connect the upstream and downstream open swells to form a rainwater channel. It is suitable for areas where it is difficult to intercept pollution, especially when the culvert is pressed by the house and the section size is small.

Description

A structure and method for cleaning and diverting sewage in a confluence underdrain

technical field

The invention relates to the technical field of municipal drainage engineering, in particular to a structure and method for cleaning and diverting sewage from a confluence underdrain.

Background technique

With the development of the city, natural rivers and flood drainage ditches are often artificially covered into culverts. Due to the inflow of surrounding rain and sewage, sewage interception gates are set at the ends of the culverts to realize the end sewage interception. The formation of urban waterlogging, and easy to cause repeated water quality of the river, has become a major stubborn disease of water control. During the renovation of the confluence culvert, some culverts were pressed by the house, and the sewage outlet of the house was directly discharged into the culvert. When the cross-section of the culvert is small, it is difficult for the construction personnel to enter the culvert for construction work due to the size of the cross-section of the culvert. , It is difficult to intercept sewage by hanging pipes and buried pipes in culverts.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a confluence underdrain cleaning and diversion reconstruction structure and method, which can solve the problem that it is difficult to clean up and divert the existing underdrain under the situation that the existing underdrain is pressed by the house, the house sewage discharge port is directly discharged into the underdrain, and the cross-sectional size of the underdrain is small. The problem.

In order to achieve the above purpose, the technical solution of the present invention is a combined underdrain cleaning and diversion reconstruction structure, including an underdrain section, and an upstream open chung section and a downstream open chung section that are respectively communicated with both ends of the underdrain section. The section includes an underdrain body with an existing straight sewage outlet; also includes a rainwater pipe, a sewage pipe and a municipal sewage well, the rainwater pipe is arranged in the underdrain body, and both ends of the rainwater pipe extend to the In the upstream open-chung section and the downstream open-chung section; the two ends of the underdrain body are respectively closed by plain concrete, and the two ends of the rainwater pipe are respectively fixed by the plain concrete; the underdrain body is connected with the Municipal sewage well connected.

Further, the rainwater pipe is arranged at the bottom of the underdrain body and has a certain slope.

Further, the length of the rainwater pipe is less than or equal to 50m.

Further, at least one side of the downstream open gully section is provided with an edge sewage well, the underdrain body is communicated with the edge sewage well through a sewage pipe, and the edge sewage well is connected with the municipal sewage through a sewage pipe. Well connected.

Further, the bottom elevation of the sewage pipe is lower than or equal to the bottom elevation of the underdrain body.

Furthermore, a manhole cover is provided on both the edge-gushing sewage well and the municipal sewage well.

Further, both the rainwater pipe and the sewage pipe are made of corrosion-resistant high-strength plastic pipes.

The present invention also provides a method for cleaning and diverting confluence of underdrains, comprising the following steps:

S1. Build temporary cofferdams upstream and downstream of the underdrain section that is pressed by houses, and drain the water between the temporary cofferdams;

S2. Use traction or drag to put the rainwater pipe in the underdrain body, and the two ends of the rainwater pipe extend out of the underdrain body and pre-fix the position;

S3. Extend one end of the sewage pipe from the downstream Mingchong section to the underdrain body and pre-fix the position, and the other end is connected to the municipal sewage well;

S4. Use plain concrete to seal both ends of the underdrain body, and fix both ends of the rainwater pipe and one end of the sewage pipe;

S5. Remove the temporary cofferdam.

Further, in step S3, a yongbian sewage well is built in the downstream Mingyong section between the temporary cofferdams, and the other end of the sewage pipe is connected to the yongbian sewage well, and then the yongbian sewage well is connected to the municipal sewage well.

Further, the edge-flooding sewage well adopts a reinforced concrete structure.

Compared with the prior art, the present invention has the following beneficial effects:

The invention transforms the existing confluence underdrain into a closed sewage channel and connects it to the municipal sewage well, sets up a rainwater pipe in the underdrain body to connect the upstream and downstream open gully to form a rainwater channel, and fixes the two ends of the rainwater pipe by plain concrete, which not only has a simple structure, but also a construction The cycle is short and the pollution interception effect is good, so it is suitable for areas where it is difficult to intercept pollution, especially when the culvert is pressed by the house and the section size is small.

Description of drawings

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

In order to explain the embodiments of the present invention or the technical solutions in the prior art more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

1 is a plan layout diagram of a confluence underdrain cleaning and diversion reconstruction structure provided by an embodiment of the present invention;

Fig. 2 is the B-B figure of Fig. 1;

Fig. 3 is the A-A figure of Fig. 1;

In the picture: 1. Existing sewage straight outlet, 2. Sewage channel in the underdrain, 3. Sewage pipe, 4. Yongbian sewage well, 5. Municipal sewage well, 6. Plain concrete, 7. Rainwater pipe.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

In the description of the present invention, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", The orientation or positional relationship indicated by "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying The device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention.

The terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined with "first" and "second" may expressly or implicitly include one or more of the features; in the description of the present invention, unless otherwise specified, the meaning of "multiple" is two or more.

As shown in FIG. 1-FIG. 3, the present embodiment provides a combined underdrain cleaning and diversion reconstruction structure, including an underdrain section, and an upstream open chute section and a downstream open chung section that are respectively connected to both ends of the underdrain section. The underdrain section includes an underdrain body with an existing sewage straight outlet 1; also includes a rainwater pipe 7, a sewage pipe 3 and a municipal sewage well 5, the rainwater pipe 7 is arranged in the underdrain body, and the rainwater pipe 7 The two ends of the rainwater pipe extend into the upstream open chute section and the downstream open chung section respectively; the two ends of the underdrain body are respectively closed by the plain concrete 6, and the two ends of the rainwater pipe 7 are respectively fixed by the plain concrete 6 ; The body of the underdrain is the sewage channel 2 in the underdrain, and the sewage channel 2 in the underdrain is communicated with the municipal sewage well 5 through the sewage pipe 3.

In this embodiment, the existing confluence underdrain is transformed into a closed sewage channel, and the sewage channel is connected to the municipal sewage well, and a rainwater pipe 7 is arranged in the underdrain body to connect the upstream and downstream open surges to form a rainwater channel.

Rainwater channel: at both ends of the underdrain body, the starting and ending points of the rainwater pipes 7 are fixed by plain concrete 6. The rainwater in the upstream open chute enters the rainwater pipe 7 at the starting point of the underdrain, and the rainwater goes through the rainwater pipes 7 in the underdrain to the end of the underdrain, and then is discharged to the downstream open chung. part.

Sewage channel: The house sewage enters the sewage channel 2 in the underdrain through the existing sewage straight discharge port 1, and the sewage converges to the sewage pipe 3 at the end of the underdrain, and the sewage pipe 3 is connected to the municipal sewage well 5. Among them, the main body of the culvert also adopts a reinforced concrete structure to prevent sewage from infiltrating into the ground, and at the same time, it can also prevent the infiltration of groundwater.

The structure of this embodiment is not only simple in structure, good in interception effect, and concise in appearance, but also does not involve the connection of pollution sources, and does not require construction personnel to enter the underdrain for construction. under smaller conditions.

Optimally, the rainwater pipe 7 is arranged at the bottom of the underdrain body, and is fixed by the plain concrete 6, and has a certain slope to meet the non-silt flow rate. Further, the length of the rainwater pipe 7 should be less than or equal to 50m, to avoid the pipeline being set too long and inconvenient for maintenance.

To optimize the above embodiment, at least one side of the downstream open chong section is provided with an edge sewage well 4, the underdrain body is communicated with the edge sewage well 4 through a sewage pipe 3, and the edge sewage well 4 passes through sewage The pipe 3 communicates with the municipal sewage well 5 . Further, the bottom elevation of the sewage pipe 3 is lower than or equal to the bottom elevation of the underdrain body, so that the sewage in the sewage channel 2 in the underdrain can automatically flow into the sewage pipe 3 under the action of gravity.

Further, the edge sewage well 4 and the municipal sewage well 5 are all provided with a manhole cover, which is used to cover the sewage well and prevent people or objects from falling. The material of the manhole cover includes but is not limited to cast iron, concrete, resin, etc., At the same time, a nameplate should be set on the manhole cover to indicate the name of the drainage unit and the nature of the sewage. For the Yongbian sewage well 4 and the municipal sewage well 5, please refer to "Reinforced Concrete and Brick Drainage Inspection Well" (20S515).

In this embodiment, the pipe diameters of the rainwater pipe 7 and the sewage pipe 3 should be obtained by calculation, the pipe diameter of the sewage pipe 3 should meet the sewage discharge requirements, and the pipe diameter of the rainwater pipe 7 should meet the upstream rainwater discharge requirements; Optimally, the rainwater pipe 7 and the sewage pipe 3 are made of corrosion-resistant high-strength plastic pipes to prevent sewage from seeping out. Meanwhile, the rainwater pipe 7 and the sewage pipe 3 need to ensure a certain slope to meet the non-silt flow rate.

As shown in FIG. 1-FIG. 3, the present embodiment also provides a method for cleaning and diverting pollution in a confluence underdrain, which includes the following steps:

S1. Build temporary cofferdams upstream and downstream of the underdrain section that is pressed by houses, and drain the water between the temporary cofferdams to ensure dry water operations;

S2. Use traction or drag to put the rainwater pipe 7 in the underdrain body, and both ends of the rainwater pipe 7 extend out of the underdrain body and pre-fix the position;

S3. Extend one end of the sewage pipe 3 from the downstream Mingchong section into the underdrain body and pre-fix the position, and the other end is communicated with the municipal sewage well 5;

S4, use plain concrete 6 to seal the two ends of the underdrain body, and fix both ends of the rainwater pipe 7 and one end of the sewage pipe 3;

S5. Remove the temporary cofferdam.

The construction method of this embodiment is simple, the cycle is short, and does not involve limited space operations, and is especially suitable for the condition that the underdrain is pressed by the house and the section size is small; and the rainwater in the upstream open chung section is directly discharged to the underdrain section through the rainwater pipe 7 In the downstream Mingyong section, the house sewage enters the sewage channel 2 in the underdrain through the existing sewage straight discharge port 1 and is discharged to the municipal sewage well 5 through the sewage pipe 3, and the sewage interception effect is good.

Further, in step S3, the Yongbian sewage well 4 is built in the downstream Mingyong section between the temporary cofferdams, and the other end of the sewage pipe 3 is communicated with the Yongbian sewage well 4, and then the Yongbian sewage well 4 is connected with the municipal sewage well 4. The sewage well 5 is connected. Among them, the surging side sewage well 4 adopts a reinforced concrete structure to prevent the sewage in the sewage well from seeping out, and at the same time, it can also prevent the river water from infiltrating.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. A sewage-cleaning and shunting reconstruction structure of a confluence covered channel comprises a covered channel section, and an upstream open surge section and a downstream open surge section which are respectively communicated with two ends of the covered channel section; the underdrain section comprises an underdrain body, and the underdrain body is provided with a current sewage straight discharge port; the method is characterized in that: the underground ditch is characterized by also comprising a rainwater pipe, a sewage pipe and a municipal sewage well, wherein the rainwater pipe is arranged in the underground ditch body, and two ends of the rainwater pipe respectively extend into the upstream open-surge section and the downstream open-surge section; two ends of the underdrain body are respectively sealed by plain concrete, and two ends of the rainwater pipe are respectively fixed by the plain concrete; the underdrain body is communicated with the municipal sewage well through a sewage pipe.

2. The flow-merging underdrain decontamination flow-dividing transformation structure of claim 1, wherein: the rainwater pipe is arranged at the bottom of the underdrain body and has a certain gradient.

3. The flow-merging underdrain decontamination flow-dividing transformation structure of claim 1, wherein: the length of the rainwater pipe is less than or equal to 50 m.

4. The flow-merging underdrain decontamination flow-dividing transformation structure of claim 1, wherein: at least one side of the downstream open-surging section is provided with a surging-side sewer well, the underdrain body is communicated with the surging-side sewer well through a sewer pipe, and the surging-side sewer well is communicated with the municipal sewer well through a sewer pipe.

5. The flow-merging underdrain decontamination flow-dividing transformation structure of claim 4, wherein: the pipe bottom elevation of the sewage pipe is lower than or equal to the bottom elevation of the underdrain body.

6. The flow-merging underdrain decontamination flow-dividing transformation structure of claim 4, wherein: gush limit bilge well with all be provided with the well lid on the municipal administration bilge well.

7. The flow-merging underdrain decontamination flow-dividing transformation structure of claim 1, wherein: the rainwater pipe and the sewage pipe are both made of corrosion-resistant high-strength plastic pipes.

8. A sewage-cleaning and shunting transformation method for a confluence closed channel is characterized by comprising the following steps:

s1, building temporary cofferdams at the upstream and downstream of the underdrain section which is pressed by the house, and draining water between the temporary cofferdams;

s2, putting the rain pipe in the underdrain body by traction or dragging, wherein two ends of the rain pipe extend out of the underdrain body and are pre-fixed in position;

s3, extending one end of a sewage pipe from the downstream open surge section into the underdrain body and fixing the sewer body in advance, and communicating the other end of the sewage pipe with a municipal sewage well;

s4, sealing two ends of the underdrain body by adopting plain concrete, and fixing two ends of the rainwater pipe and one end of the sewage pipe;

and S5, removing the temporary cofferdam.

9. The flow-merging underdrain decontamination flow-dividing transformation method of claim 8, wherein: and step S3, building a surge edge bilge well at the downstream open surge section between the temporary cofferdams, communicating the other end of the bilge pipe with the surge edge bilge well, and communicating the surge edge bilge well with the municipal bilge well.

10. The flow-merging underdrain decontamination flow-dividing transformation method of claim 9, wherein: the surge edge sewage well is of a reinforced concrete structure.

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