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Permeable pavement system for weakly-permeable soil regions

A water-permeable pavement and water-permeable technology, which is applied to the cohesive pavement paved on site, pavement details, roads, etc., can solve the problems of prolonging the construction period, not realizing the application value of permeable pavement, and weak foundation water permeability, etc., to achieve Increased water holding capacity, excellent water permeability, and increased contact area

Inactive Publication Date: 2016-08-31
BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0003] In our country, permeable pavement technology has been widely used, and it has a good application effect in vast urban areas. However, in areas with weak water permeability, such as the soil type in cities where the soil type is clay, the foundation has weak water permeability. The actual application effect of the region is not good
[0004] The application effect of traditional permeable pavement system in weakly permeable soil areas is not good, and the shortcomings are obvious
On the one hand, if the traditional permeable pavement is directly laid, due to the weak permeability of the foundation, there will be little supplementary groundwater, and the application value of permeable pavement will not be exerted; on the other hand, if the foundation soil is replaced, due to the large paving area, it will inevitably It will prolong the construction period, increase the project cost, and cause the laying cost to be too high

Method used

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  • Permeable pavement system for weakly-permeable soil regions
  • Permeable pavement system for weakly-permeable soil regions

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Embodiment 1

[0023] This embodiment provides a kind of permeable pavement system, its longitudinal section is as follows figure 1 As shown; including a seepage-promoting layer 2, a graded gravel gravel layer 3, a gravel base 4 and a water-permeable layer 5 laid from bottom to top above the soil base 1;

[0024] Described soil base 1 is the weakly permeable original soil layer in this area, and the soil therein is weakly permeable soil (silt, silt, silty clay or clay);

[0025] The plan view of the permeation-promoting layer 2 is as figure 2 As shown; the thickness of the permeation-promoting layer is 200mm, wherein several permeation-promoting holes A that run through the permeation-promoting layer in the vertical direction are evenly arranged, the diameter of the permeation-promoting hole is 200mm, and the distance between each permeation-promoting hole is (the distance between the centers of two adjacent permeation-promoting holes) is 300mm; outside the described permeation-promoting h...

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Abstract

The invention relates to a permeable pavement system for weakly-permeable soil regions. The invention is characterized in that the system comprises a permeation promoting layer, a rubble layer and a water permeable layer which are paved from bottom to top. The permeation promoting layer contains several permeation promoting holes which vertically pass through the permeation promoting layer. The permeation promoting holes are filled with pebbles and rubbles. The permeable pavement system is suitable for weakly-permeable soil regions and has good engineering application value. By the system, rain gathered on the pavement can be effectively reduced, flood disasters can be minimized, pollution to soil and underground water can be decreased, water environment conditions can be improved, load for sewage treatment plants due to runoff pollution can be lowered, and supplementary amount of underground water can be increased. The system is also one of technical measures for construction of a sponge city.

Description

technical field [0001] The invention relates to the field of road engineering, in particular to a permeable pavement system suitable for weakly permeable soil areas. Background technique [0002] At present, the construction mode of sponge city is gradually being promoted and applied in our country. The application of this concept can effectively alleviate the problems of urban rainwater waterlogging, aggravated water pollution, and water resource shortage, and play a role in beautifying the environment. As a low-impact development technology, permeable pavement is also one of the technical measures for the construction of sponge cities. It plays an important role in urban stormwater management and control. Compared with traditional roads, it has a significant effect in reducing runoff. It can increase the rainfall infiltration from 10-15% of the hardened site to more than 75%, which can not only greatly reduce the surface runoff, reduce the flood peak, prolong the peak time...

Claims

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Application Information

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IPC IPC(8): E01C7/32E01C11/22
CPCE01C7/32E01C11/225
Inventor 王俊岭秦全城徐怡张雅君冯萃敏许萍
Owner BEIJING UNIVERSITY OF CIVIL ENGINEERING AND ARCHITECTURE
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