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Environment-friendly roadbed treatment method based on sponge city

A sponge city and treatment method technology, which is applied in the field of environmental protection roadbed treatment, can solve the problems of incomplete sponge city and ineffective interception of rainwater, etc., achieve remarkable interception effect, improve driving comfort, and meet the effect of foundation bearing capacity

Pending Publication Date: 2022-07-22
CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing rainwater treatment methods involving sponge cities mainly include: developed municipal pipe network drainage system, establishment of reservoirs for water storage treatment and reuse, and water circulation in the region (laying permeable bricks, sunken green spaces, rainwater flower beds, etc.) etc. Some of the current rainwater treatment methods basically belong to surface water storage and drainage, which cannot effectively intercept rainwater in the event of rain and flood disasters. Even if a well-developed municipal drainage system is established, it is a rough discharge, which does not fully meet the connotation of the sponge city.

Method used

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  • Environment-friendly roadbed treatment method based on sponge city
  • Environment-friendly roadbed treatment method based on sponge city
  • Environment-friendly roadbed treatment method based on sponge city

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] "W" type drainage for highway pavement (e.g. figure 1 , Figure 4 shown), its specific steps are as follows:

[0037] S1. Pavement layer treatment: The part above the top surface of the foundation is sequentially set with gravel cushion 1, dense base 2, waterproof sealing layer 3, permeable base 4, and asphalt permeable layer 5 to form the pavement structure. In addition, the permeable base layer 4 and the asphalt permeable layer 5 are both provided with cross slopes for guiding the seepage of rainwater on the road surface; wherein, the thickness of the crushed stone cushion layer 1 can be selected in the range of 30 to 50 cm, and the slope of the cross slope is 0.5% to 2%. , the specific selection depends on the actual situation, and the low point of the cross slope is located at the edge of the roadway, and the cross slope is symmetrically arranged on both sides of the road to collect water flow to the cross slope for drainage operation;

[0038] In this step, the t...

Embodiment 2

[0046] "V" type drainage method suitable for general buildings (such as figure 2 , Figure 4 shown), its specific steps are as follows:

[0047] S1, pile body construction: construct pile foundation at the road foundation place of structure 8, and pile cylinder 6 is driven into this pile foundation; The pile cylinder 6 of this step is identical with the structure in the embodiment one, do not repeat them here;

[0048] S2. Pavement layer treatment: The part above the top surface of the pile tube 6 is sequentially set with gravel cushion 1, permeable geotextile 11, permeable base 4, and asphalt permeable layer 5 to form the pavement structure, and in the middle of the pavement is the structure 8, and the structure 8. A waterproof sealing layer 3 is arranged around the structure to prevent the bottom layer of the structure from returning to moisture; the water flow through the water flow on both sides of the structure 8 in turn passes through the asphalt permeable layer 5, the...

Embodiment 3

[0052] Sidewalks, squares, corridors and other fully permeable drainage types (such as image 3 , Figure 4 shown), the specific steps are as follows:

[0053] S1, pile body construction: construct the pile foundation at the roadbed, and drive the pile cylinder 6 into this pile foundation; the pile cylinder 6 of this step is identical with the structure in the embodiment one, and will not repeat them here;

[0054] S2. Pavement layer treatment: The part above the top surface of the pile tube (6) is sequentially provided with gravel cushion (1), permeable geotextile (11), permeable base layer (4), and asphalt permeable layer (5) from bottom to top to form the pavement structure ; The water flow direction of the pavement is formed from top to bottom to form a fully permeable drainage method for sidewalks, squares, corridors, etc. to be discharged to the municipal pipe network.

[0055] In this embodiment, there is no transverse slope on the road surface, so that rainwater seep...

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Abstract

The invention provides an environment-friendly roadbed treatment method based on a sponge city, which comprises the following steps: prearranging a pile foundation on a pretreated foundation, and then driving a pile cylinder into the pile foundation, so that water flow permeates into the pile cylinder and then is intensively discharged to a municipal pipe network; the pile cylinder is composed of geotextile and filling discrete materials, wherein the outer layer of the geotextile is closed at the bottom and open at the top, and the filling discrete materials are wrapped in the geotextile. The method has the advantages that the limitation of centralized drainage depending on facilities such as pipe ducts and pump stations in a traditional construction mode is solved, the limitation of water storage and drainage of common surface soil layers is solved, the underground water storage function is fully played, urban climate is adjusted, and a sponge city is constructed.

Description

technical field [0001] The invention relates to the technical field of highway traffic construction, in particular to an environment-friendly roadbed treatment method based on a sponge city. Background technique [0002] Sponge city is a city that, like a sponge, has good "elasticity" in adapting to and responding to environmental changes. When it rains, it absorbs, stores, seeps, and purifies water, and "releases" the stored water when needed. use. Sponge city is a sustainable urban construction idea, which enables modern cities to have the ability to cope with climate change, prevent and mitigate extreme rainfall, and maintain ecological functions. The existing rainwater treatment methods involving sponge cities mainly include: developed municipal pipe network drainage system, establishment of reservoirs for water storage treatment and reuse, regional water circulation (laying permeable bricks, sunken green spaces, rainwater flower beds, etc.) Etc., some of the current r...

Claims

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Application Information

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IPC IPC(8): E01C3/04E02D27/12E01C7/32E02D3/10
CPCE01C3/04E02D27/12E01C7/32E02D3/10
Inventor 阙梦辉黄松峰徐林涛曾祥玉
Owner CENT & SOUTHERN CHINA MUNICIPAL ENG DESIGN & RES INST
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