CN213571373U

CN213571373U - A road bed drainage structures for highway section is richened to groundwater

Info

Publication number: CN213571373U
Application number: CN202021783921.7U
Authority: CN
Inventors: 邵昭; 刘永超
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-06-29
Anticipated expiration: 2030-08-24

Abstract

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, include: road block and cut-off water blind ditch, the cut-off water blind ditch is located road block width direction both sides, the length direction of cut-off water blind ditch edge road block extends, the road block lower part has a plurality of horizontal drain pipes, horizontal drain pipe's the highest face is less than the lowest face of cut-off water blind ditch, pipeline and cut-off water blind ditch intercommunication are passed through to horizontal drain pipe's both ends, the horizontal drain pipe below has secret drainage system, horizontal drain pipe middle part and secret drainage system intercommunication solve the above-mentioned prior art in can't set up the escape canal and can't increase the embankment and carry out the technical problem of road bed drainage.

Description

A road bed drainage structures for highway section is richened to groundwater

Technical Field

The utility model belongs to the technical field of the building, especially, relate to a roadbed drainage structure that is used for groundwater to richen highway section.

Background

With the rapid and stable development of urban economy, the traffic volume of urban roads is increasing day by day, the roadbed is used as a main bearing structure of the road, not only bears the gravity of the self rock soil, but also bears the driving load transmitted from the road surface, and has enough strength and stability, wherein the roadbed drainage plays a decisive role, the current main method for solving the problem that underground water invades the roadbed is to arrange drainage ditches at the two sides of the road, heighten a embankment and the like, but the construction of the urban road roadbed engineering is in open-air operation and is greatly influenced by natural conditions; the engineering construction area has more professional types, and various professional pipelines are criss-cross; the cooperation work is more between the specialty and between the society, mutual interference, and some road land is restricted and can not set up the escape canal, and the design elevation receives city planning control and can not carry out the embankment and increase, leads to the construction change to survey more, therefore, under the condition that current method can not satisfy the road bed drainage condition, how prevent groundwater infringement road bed, cause the road bed unstability, become a control difficulty.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a roadbed drainage structure for highway section is richened to groundwater solves among the above-mentioned prior art and can't set up the escape canal and can't increase the embankment and carry out the technical problem of roadbed drainage.

The utility model provides a technical scheme that its technical problem adopted is:

a roadbed drainage structure for a section rich in underground water, comprising: road block and interception french drain, the interception french drain is located road block width direction both sides, the length direction of intercepting the french drain along the road block extends, the road block lower part has a plurality of horizontal drain pipes, the highest face of horizontal drain pipe is less than the lowest face of intercepting the french drain, the both ends of horizontal drain pipe are through pipeline and interception french drain intercommunication, horizontal drain pipe below has secret drainage system, horizontal drain pipe middle part and secret drainage system intercommunication.

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, the road surface of the road body divide into from inside to outside: the water intercepting blind ditch is positioned below the green belt.

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, the interception french drain intussuseption of greenbelt below is filled with the metalling.

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, highly being higher than the groundwater bit line more than 50 centimetres of metalling.

The utility model discloses a roadbed drainage structure for highway section is richened to groundwater, the junction of intercepting french drain and horizontal drain pipe is provided with the check valve, the check valve makes rivers only can arrange to horizontal drain pipe one side from intercepting french drain.

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, the check valve is the ball-cock assembly.

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, intercept water french drain bottom surface and be provided with water proof geotechnological cloth.

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, intercept the water french drain bottom and be less than the groundwater level line.

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, way body top-down does in proper order: asphalt layer, water stabilization layer and roadbed.

The utility model discloses a roadbed drainage structure that highway section was richened to groundwater, the material of horizontal drain pipe is PVC.

The utility model discloses the beneficial effect who produces is: the utility model provides a roadbed drainage structure for highway section is richened to groundwater is through setting up the catch water french drain in the road bed both sides to set up the metalling in the catch water french drain, can effectually drench the rivers in greenbelt and the road bed and collect, then send into underground drainage system with the rivers through horizontal drain pipe, thereby prevent that groundwater from soaking the road bed, set up simultaneously that the check valve can effectually prevent that the too big rivers that cause of groundwater from reverse oozing and causing the damage to the road bed.

Drawings

The invention will be further explained with reference to the drawings and examples, wherein:

fig. 1 is a schematic diagram of an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

As shown in fig. 1, a roadbed drainage structure for a section of underground water-rich road includes: road body 1 and interception french drain 3, the interception french drain 3 is located 1 width direction both sides of road body, the length direction who intercepts french drain 3 along road body 1 extends, 1 lower part of road body has a plurality of horizontal drain pipes 4, horizontal drain pipe 4's the highest face is less than the lowest face of intercepting french drain 3, pipeline and 3 intercommunications of interception french drain are passed through at horizontal drain pipe 4's both ends, horizontal drain pipe 4 below has secret drainage system 6, horizontal drain pipe 4 middle part and secret drainage system 6 intercommunication.

The utility model discloses a preferred embodiment, road surface 2 of road body 1 divide into from inside to outside: the roadway 21, the sidewalk 22 and the green belt 23, and the intercepting blind ditch 3 is positioned below the green belt 23.

In the preferred embodiment of the present invention, the water intercepting blind ditch 3 below the green belt 23 is filled with the crushed stone layer 31.

In the preferred embodiment of the present invention, the height of the crushed stone layer 31 is 50 cm or more higher than the groundwater level line.

In the preferred embodiment of the present invention, the joint of the intercepting blind drain 3 and the transverse drain pipe 4 is provided with the check valve 5, the check valve 5 makes the water flow be discharged from the intercepting blind drain 3 to the transverse drain pipe 4.

In the preferred embodiment of the present invention, the check valve 5 is a ball cock.

In the preferred embodiment of the present invention, the bottom surface of the intercepting blind ditch 3 is provided with a water-proof geotextile 32.

In the preferred embodiment of the present invention, the bottom of the intercepting blind ditch 3 is lower than the groundwater level line.

In the preferred embodiment of the present invention, the road body 1 sequentially comprises, from top to bottom: an asphalt layer 13, a water stabilization layer 12 and a roadbed 11.

In the preferred embodiment of the present invention, the material of the horizontal drainage pipe 4 is PVC.

The working process is as follows:

1) pre-buried transverse drain pipe 4

In the filling process of the roadbed 11, when the roadbed is filled to 1.5 meters below the top of the roadbed, one transverse drainage pipe 4 is laid every 50 meters, a tee joint is arranged at the position of a corresponding rainwater inspection well, namely an underground drainage system, and the transverse drainage pipe 4 is connected into the rainwater inspection well.

2) Mounting check valve

After the transverse drain pipe 4 is laid, the end part of the transverse drain pipe 4 is connected with a check valve 5, the check valve 5 is a circular truncated cone-shaped pipe groove with a small opening at one end and a large opening at one end, a filter net is arranged at the joint of the bottom of the pipe groove and the transverse drain pipe 4, and an automatic floating ball device is installed after a water tightness test is carried out on the pipe groove, so that the function of the check valve is realized.

3) Setting a water intercepting blind ditch 3

After the roadbed 11 is constructed, digging a groove with the depth of 2.5 meters in the range of green belts 23 on two sides of the road, properly putting the slope according to soil, keeping the slope of the bottom of the groove consistent with the slope of the road but not less than 0.3%, paving a water-proof geomembrane 32 at the bottom of the groove, filling the water-proof geomembrane 32 with gravels or sand gravels to the position 0.5m above an underground water line to form a gravel layer 31, and backfilling plain soil to the road surface.

The water interception blind ditch 3 is filled with the gravel layer 31 to form a greening yielding zone which is integrally arranged in the range of the greening belt 23 on the outer side of the sidewalk 22 or about 1-2 meters outside the red line of the road, so that the construction of other comprehensive pipelines is not influenced; and the surface water and the underground water are collected and introduced into the transverse drainage pipe 4 through the filtering action of the crushed stone layer 31 and finally flow into the underground drainage system 6, so that the roadbed is prevented from being soaked and destabilized by water; then a layer of waterproof geomembrane 32 is paved under the water-intercepting blind ditch 3 to prevent underground water outside the road from flowing into the roadbed; meanwhile, one transverse drainage pipe 4 is arranged every 50 meters, and the stability and water tightness of the PVC material are utilized to prevent the underground water introduced from the water-intercepting blind ditch 3 from permeating into the soil of the roadbed 11, so that the compaction degree and integrity of the soil of the roadbed 11 are ensured; finally, the underground water level is adjusted by utilizing the check valve 5 provided with the automatic floating ball, so that rainwater cannot seep into the roadbed 11 in the season of rich rainfall, and the operation is convenient and effective.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of the description, but do 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. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.

Claims

1. A roadbed drainage structure for a section rich in underground water, comprising: road block and interception french drain, the interception french drain is located road block width direction both sides, the length direction of intercepting the french drain along the road block extends, the road block lower part has a plurality of horizontal drain pipes, the highest face of horizontal drain pipe is less than the lowest face of intercepting the french drain, the both ends of horizontal drain pipe are through pipeline and interception french drain intercommunication, horizontal drain pipe below has secret drainage system, horizontal drain pipe middle part and secret drainage system intercommunication.

2. A roadbed drainage structure for a section of rich underground water according to claim 1, wherein the road surface of the road body is divided into from inside to outside: the water intercepting blind ditch is positioned below the green belt.

3. The roadbed drainage structure for the underground water rich road section as claimed in claim 2, wherein the water interception blind ditch below the green belt is filled with a gravel layer.

4. A roadbed drainage structure for a section of rich underground water according to claim 3, wherein the height of the crushed stone layer is more than 50 cm higher than the underground water line.

5. The roadbed drainage structure for the underground water rich road section as claimed in claim 1, wherein a one-way valve is arranged at the joint of the water interception blind ditch and the transverse drainage pipe, and the one-way valve enables water flow to be discharged from the water interception blind ditch to one side of the transverse drainage pipe only.

6. A roadbed drainage structure for a section of rich underground water according to claim 5, wherein the one-way valve is a ball float valve.

7. The roadbed drainage structure for the underground water-rich road section as claimed in claim 3, wherein the bottom surface of the intercepting blind ditch is provided with a water-proof geotextile.

8. A roadbed drainage structure for a section of rich underground water according to claim 3, wherein the bottom of the intercepting blind is lower than an underground water level line.

9. The roadbed drainage structure for the underground water rich road section as claimed in claim 1, wherein the road bodies are sequentially from top to bottom: asphalt layer, water stabilization layer and roadbed.

10. The roadbed drainage structure for the underground water rich road section as claimed in claim 1, wherein the material of the transverse drainage pipe is PVC.