Structure for effectively treating roadbed and pavement water seepage and stagnant water under low embankment

Abstract

The utility model discloses a structure for effectively treating water seepage and stagnant water of a roadbed and a pavement under a low embankment, which is arranged on a highway and used for discharging accumulated water and is characterized by comprising a drainage ditch, water seepage geotechnical cloth, a permeable layer, a drainage pipe and anti-seepage geotechnical cloth, the water seepage geotechnical cloth is arranged on the drainage ditch and used for filtering the accumulated water, and the permeable layer is arranged on the drainage ditch. The permeable layer is arranged on the water seepage geotechnical cloth, the drainage pipe is arranged on the permeable layer, and the anti-seepage geotechnical cloth is arranged on the permeable layer. According to the structure for effectively treating roadbed pavement water seepage and stagnant water under the low embankment, by arranging the road drainage device formed by stacking the two ditches, the upper side ditch plays a role in drainage and also plays a role in preventing external underground water from flowing into the roadbed; seepage water in the roadbed is discharged into the blind ditches and flows into the upper drainage ditches under the anti-seepage effect and the drainage effect of the waterproof geotechnical cloth at the bottom of the roadbed, the waterproof method that the geotechnical cloth is laid at the bottom of the double-ditch stacked roadbed is adopted, and the construction procedure of secondary excavation of side ditches is omitted.

Description

Technical Field

[0001] The utility model relates to the technical field of highway construction, in particular to a structure for effectively treating water seepage and water retention on a roadbed and pavement under a low embankment. Background Art

[0002] Under normal construction conditions, the most common method for drainage of roadbed and pavement under low embankments is to separate the upper drainage ditch and the lower drainage blind ditch. The upper drainage ditch and the lower drainage blind ditch are set separately and cannot be integrated. The drainage of the roadbed is completed by drainage blind ditch, the culvert is filled with gravel, and the drainage effect is achieved through gravel filtration. The drainage of the pavement is completed by mortar-laid flagstone drainage side ditch. The double ditch is set separately, and the drainage blind ditch is used as the roadbed drainage channel. The water on the outer side of the upper roadbed will enter the roadbed, and the upper drainage ditch cannot play the role of isolating the water on the outer side of the roadbed from entering the inner part of the roadbed, causing some seepage water to infiltrate the roadbed for the second time, resulting in unsatisfactory drainage effect and continuing to affect the quality of the roadbed. In addition, the water flow on the outer side of the roadbed carries sediment into the gravel blind ditch, causing the gravel blind ditch to be blocked and drainage is not smooth. The bottom of the roadbed is waterproofed by laying geotextiles in double trenches. The upper drainage ditch can prevent water from the outside of the roadbed from entering the inside of the roadbed. The bottom of the roadbed and the bottom of the blind ditch are combined with waterproof geotextiles to prevent water from penetrating into the lower part of the roadbed and directly draining it to the blind drainage ditch. The use of permeable geotextiles on the side can effectively prevent sediment from entering the gravel blind ditch. The roadbed uses PVC drainage in the middle of the gravel to make the water flow more unobstructed. The upper drainage ditch can prevent the water from the outside of the roadbed from penetrating into the roadbed and allow the water to enter the blind drainage ditch for discharge. The drainage blind ditch and the drainage ditch are constructed separately. This method consumes more manpower and material resources during the construction process, resulting in an extension of the construction period, an increase in construction procedures, an increase in land occupation area, an increase in construction costs and costs, and a large amount of external water and roadbed seepage enter the bottom of the roadbed, resulting in unsatisfactory drainage effect, which poses a great hidden danger to the quality of the roadbed.

[0003] The use of commonly used double-ditch separate drainage construction and the use of gravel blind ditch drainage alone have the following disadvantages: 1. There are many construction processes and low construction efficiency; 2. The drainage effect is not ideal; 3. There are hidden dangers in the roadbed quality; 4. The area occupied by the highway is increased; 5. The construction cost is high and the treatment effect is poor. Utility Model Content

[0004] The purpose of the utility model is to provide a structure for effectively treating water seepage and water retention on the roadbed and pavement under a low embankment, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a structure for effectively treating water seepage and water retention on the roadbed and pavement under a low embankment, which is arranged on a highway and used to discharge accumulated water, comprising:

[0006] gutter.

[0007] A water-permeable geotextile is arranged on the drainage ditch to filter the accumulated water.

[0008] A permeable layer is arranged on the water-permeable geotextile and is used for permeating the accumulated water.

[0009] A drainage pipe is arranged on the permeable layer and is used for discharging the accumulated water.

[0010] The anti-seepage geotextile is arranged on the permeable layer to prevent the penetration of accumulated water.

[0011] Preferably, the drain pipe is provided with a drain hole, and the drain hole is used to disperse and discharge the accumulated water.

[0012] Preferably, the drainage pipe is obliquely arranged on the inner side of the permeable layer, so that the accumulated water can be easily discharged outward through the drainage pipe.

[0013] Preferably, the anti-seepage geotextile is arranged at the bottom of the permeable layer and extends outward to the base road to prevent the accumulated water that penetrates the permeable layer from continuing to penetrate downward.

[0014] Preferably, the number of structures for effectively handling water seepage and water retention on the roadbed and pavement under the low embankment is two, and the two structures for effectively handling water seepage and water retention on the roadbed and pavement under the low embankment are arranged on both sides of the base road to improve drainage efficiency.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the roadbed and pavement seepage and water retention structures are effectively handled under the low embankment. By setting up a double-ditch stacked road drainage device, the upper side ditch not only plays a drainage role, but also serves to block the external groundwater from flowing into the roadbed. The seepage inside the roadbed is discharged into the blind ditch and flows into the upper drainage ditch by the waterproof geotextile at the bottom of the roadbed. The method of laying geotextile waterproofing at the bottom of the double-ditch stacked roadbed saves too much land for highway construction, reduces the construction process of secondary excavation of the side ditch, ensures the quality of the roadbed, and saves the construction cost of the highway. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A cross-sectional schematic diagram of an embodiment of the utility model;

[0017] Figure 2 It is a cross-sectional schematic diagram of an embodiment of the utility model;

[0018] Figure 3 It is a schematic cross-sectional view of a lower side of an embodiment of the utility model;

[0019] Figure 4 A schematic diagram of a drain pipe according to an embodiment of the present utility model;

[0020] Figure 5 This is a cross-sectional view of a drainage pipe entering an upper drainage ditch according to an embodiment of the utility model.

[0021] In the figure:

[0022] 1. Drainage ditch 2. Permeable geotextile 3. Permeable layer

[0023] 4. Drainage pipe 5. Anti-seepage geotextile 6. Drainage hole DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] like Figure 1 As shown, the utility model provides a technical solution: a structure for effectively treating water seepage and water retention on the roadbed and pavement under a low embankment, which is arranged on a highway for discharging accumulated water, and the number of the structures for effectively treating water seepage and water retention on the roadbed and pavement under the low embankment is two, and the two structures for effectively treating water seepage and water retention on the roadbed and pavement under the low embankment are arranged on both sides of the base road for improving drainage efficiency, and include: a drainage ditch 1, a permeable geotextile 2, a permeable layer 3, a drainage pipe 4 and an impermeable geotextile 5.

[0026] like Figure 2-5 As shown, the drainage ditch 1 is composed of mortar-laid flagstones and is arranged on the roadbed slope to collect most of the accumulated water on the roadbed. The permeable geotextile 2 is arranged on the drainage ditch 1 to filter the accumulated water. The permeable geotextile 2 is a kind of geosynthetics, the full name of which is polyester filament needle-punched non-woven geotextile. The raw material is polyester slices. The permeable geotextile 2 is mainly used to help filter the accumulated water. The permeable layer 3 is arranged on the permeable geotextile 2 to penetrate the accumulated water. The permeable layer 3 is composed of 5 to 40 mm crushed stones and is used to filter the sewage that penetrates downward. The drainage pipe 4 is arranged on the permeable layer 3. The material of the drainage pipe 4 is Φ100PVC and is used to discharge the accumulated water. 4 is provided with drainage holes 6, and the drainage holes 6 are provided in four rows of Φ12 circular holes at the lower part of the drainage pipe 4. The water that penetrates into the gravel enters the drainage pipe 4 through the drainage holes 6 and flows out horizontally in a concentrated manner. The drainage holes 6 are used to disperse and discharge the accumulated water. The drainage pipe 4 is obliquely arranged on the inner side of the permeable layer 3, so that the accumulated water can be discharged outward through the drainage pipe 4 conveniently, and there will be no situation where the accumulated water in the drainage pipe 4 cannot be discharged. The impermeable geotextile 5 is arranged on the permeable layer 3. The impermeable geotextile 5 is used to prevent the infiltration of accumulated water. The impermeable geotextile 5 is arranged at the bottom of the permeable layer 3 and extends outward to the base road to prevent the accumulated water that penetrates the permeable layer 3 from continuing to infiltrate downward.

[0027] As shown above, after cleaning both sides of the base road, dig blind ditches and drainage ditches, then lay anti-seepage geotextile 5 in the blind ditch and connect and fix it to the bottom of the base road, then lay permeable geotextile 2 on the side, and then build drainage ditch 1 on the permeable layer 3. After the mortar strength reaches 75% standard, construct the water-stabilizing layer and asphalt concrete of the road surface.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A structure for effectively treating water seepage and water retention in roadbed and pavement under a low embankment, which is arranged on a highway and used for discharging accumulated water, characterized in that: include: gutter; A water-permeable geotextile, which is arranged on the drainage ditch and is used to filter the accumulated water; A permeable layer, which is arranged on the permeable geotextile and is used to penetrate the accumulated water; A drainage pipe, which is arranged on the permeable layer and is used to discharge the accumulated water; The anti-seepage geotextile is arranged on the permeable layer to prevent the penetration of accumulated water.

2. A structure for effectively treating water seepage and water retention on roadbed and pavement under a low embankment according to claim 1, characterized in that: The drain pipe is provided with a drain hole.

3. A structure for effectively treating water seepage and water retention on the roadbed and pavement under a low embankment according to claim 1 or 2, characterized in that: The drainage pipe is arranged obliquely on the inner side of the permeable layer.

4. The structure for effectively treating water seepage and water retention on the roadbed and pavement under a low embankment according to claim 1, characterized in that: The anti-seepage geotextile is arranged at the bottom of the permeable layer and extends outward to the base road to prevent the accumulated water that penetrates the permeable layer from continuing to penetrate.

5. The structure for effectively treating water seepage and water retention on the roadbed and pavement under a low embankment according to claim 1, characterized in that: The number of structures for effectively treating water seepage and water retention on the roadbed and pavement under the low embankment is two, and the two structures for effectively treating water seepage and water retention on the roadbed and pavement under the low embankment are arranged on both sides of the base road.

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