CN113062168A

CN113062168A - Method for improving water permeability of pavement

Info

Publication number: CN113062168A
Application number: CN202110285713.7A
Authority: CN
Inventors: 谢宇; 张康达; 曾凡虎; 王亚辉; 王晓晨; 邓士锐; 周文武
Original assignee: China First Metallurgical Group Co Ltd
Current assignee: China First Metallurgical Group Co Ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-07-02

Abstract

The invention relates to a method for improving the water permeability of a pavement, which comprises the following steps: 1) removing the pavement surface layer; 2) drilling a road base layer, wherein the pore passages downwards penetrate through the road base layer and the gravel layer in sequence and extend to the top of the plain soil layer; 3) cleaning the pore, laying reverse filtration isolation cloth at the bottom of the pore, and then correspondingly covering a reinforcing mesh sheet at the pore opening of the pore and fixing the reinforcing mesh sheet; 4) and re-paving the pavement surface layer. The improvement method provided by the invention can be used for improving the non-permeable pavement into the permeable pavement and also can be used for repairing and improving the water permeability of the existing road pavement; according to the pavement paving method, the hole diameter of the drilled hole, the pore channel filling treatment mode and the orifice reinforcing measure can be selected according to pavement paving modes of different pavements, so that the pavement bearing capacity is ensured to the maximum extent.

Description

Method for improving water permeability of pavement

Technical Field

The invention relates to the technical field of urban water treatment, in particular to a method for improving road surface water permeability through transformation.

Background

Under the construction background of a sponge city, the rainwater seepage, stagnation, storage, purification, use and drainage control is more and more mature, and meanwhile, along with the slowing of the pace of engineering construction in China, the engineering project has wide development prospects in operation, maintenance and updating.

In the internal traffic network of green infrastructures such as sidewalks, community internal roads and park greenbelts designed in early days, the roads are mostly non-permeable pavements or permeable pavement drainage systems not perfect enough, gaps are blocked after long-term use, the water permeability is greatly reduced, if the urban waterlogging effect is aggravated by the fact that accumulated water on the pavements cannot be timely removed in rainy seasons, if the pavements are completely dismantled and re-constructed to be permeable pavements, the economic cost is increased.

Disclosure of Invention

In view of the above problems, a method for improving the water permeability of a road surface is provided, which aims to realize low-cost improvement of the existing road.

The specific technical scheme is as follows:

a method for improving the water permeability of a pavement is characterized by comprising the following steps:

1) removing the pavement surface layer;

2) drilling a road base layer, wherein the pore passages downwards penetrate through the road base layer and the gravel layer in sequence and extend to the top of the plain soil layer;

3) cleaning the pore, laying reverse filtration isolation cloth at the bottom of the pore, and then correspondingly covering a reinforcing mesh sheet at the pore opening of the pore and fixing the reinforcing mesh sheet;

4) and re-paving the pavement surface layer.

The method for improving the water permeability of the pavement also has the characteristic that graded broken stones can be further used for filling the hole channels in the step 3).

The method for improving the water permeability of the pavement also has the characteristic that the reverse filtration isolation cloth is the water filtration geotextile.

The method for improving the water permeability of the pavement also has the characteristic that the diameter of the pore channel in the step 2) is 100-300 mm.

The beneficial effect of above-mentioned scheme is:

1) the improvement method provided by the invention can be used for improving the non-permeable pavement into the permeable pavement and also can be used for repairing and improving the water permeability of the existing road pavement;

2) according to the pavement paving method, the hole diameter of the drilled hole, the pore channel filling treatment mode and the orifice reinforcing measure can be selected according to pavement paving modes of different pavements, so that the pavement bearing capacity is ensured to the maximum extent.

Drawings

FIG. 1 is a schematic representation of the retrofit enhancement provided in an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 corresponding to the letter A;

FIG. 3 is a plan view of the arrangement of reinforcing mesh in the present invention.

In the drawings: 1. a pavement facing; 2. a road base layer; 3. a crushed stone layer; 4. a plain soil layer; 5. reverse filtering isolation cloth; 6. reinforcing the mesh sheet; 7. grading broken stone; 8. steel nails; 9. a water-permeable blind pipe.

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.

It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.

The invention is further described with reference to the following drawings and specific examples, which are not intended to be limiting.

As shown in fig. 1 and fig. 2, the improvement method provided in the present invention includes the following steps:

1) removing the pavement surface layer 1;

2) drilling the road base layer 2 by a water drill, wherein the pore passage penetrates through the road base layer 2 and the gravel layer 3 downwards in sequence and extends to the top of the plain soil layer 4;

3) cleaning the pore channels, and paving a reverse filtration isolation cloth 5 (namely a water filtration geotextile) at the bottoms of the pore channels to prevent slurry from upwelling to block gaps of permeable materials in the subsequently paved pavement surface layer and pollute the pavement; then correspondingly covering the reinforcing mesh 6 at the hole opening of the hole channel, fixing four corners of the reinforcing mesh 6 by steel nails 8, and reinforcing the hole channel by using the reinforcing mesh 6, so that the bearing capacity of the pavement at the hole opening is increased, and the subsequent pavement is prevented from generating reflection cracks;

4) and re-paving the pavement surface layer.

The invention can adjust the density of the pore canal according to the requirements of the runoff and the water permeability of the pavement, and can further adjust the pore size of the pore canal according to the requirements of the pavement area, the water permeability and the bearing capacity of the pavement (the pore size range is generally selected to be 100-300 mm).

In order to further ensure the maximization of the water permeability of the pavement on the premise of ensuring the bearing capacity of the pavement, graded broken stones 7 can be filled in the pore channels.

The improvement method provided by the invention can be applied to the improvement of the water permeability of old roads such as sidewalks, roads inside communities, parks, greenbelts, squares and other light-weight roads, and can also be applied to the pavement laying of newly-built roads.

While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention.

Claims

1. A method for improving the water permeability of a pavement is characterized by comprising the following steps:

1) removing the pavement surface layer (1);

2) drilling a road base layer (2), wherein a pore passage penetrates through the road base layer (2) and the gravel layer (3) in sequence downwards and extends to the top of the plain soil layer (4);

3) cleaning the hole, laying reverse filtration isolation cloth (5) at the bottom of the hole, correspondingly covering a reinforcing mesh sheet (6) at the hole opening of the hole, and fixing the reinforcing mesh sheet (6);

4) and re-paving the pavement surface layer.

2. The improvement method for improving the water permeability of the pavement according to claim 1, wherein the holes are filled with graded crushed stones (7) in the step 3).

3. The improvement method for improving the water permeability of the pavement according to claim 1 or 2, wherein the reverse filtration separation cloth (5) is a water-filtering geotextile.

4. The method for improving the water permeability of the pavement according to claim 1 or 2, wherein the diameter of the pore channel in step 2) is 100-300 mm.