Red sandstone subgrade filling structure used in rainy area and construction method of same

A red sandstone and filling technology is applied in the field of red sandstone subgrade filling and construction structure and construction in rainy areas, which can solve the problems of occupying a large amount of land, increasing investment and land acquisition, and achieving cost saving, labor saving, and ecological environment protection. Effect

Inactive Publication Date: 2018-03-02
CHINA MCC17 GRP
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  • Claims
  • Application Information

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Problems solved by technology

In these areas, if the red sandstone is not used as abandoned earth, it will occupy a large amount of land, and

Method used

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  • Red sandstone subgrade filling structure used in rainy area and construction method of same

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Embodiment 1

[0029] Such as figure 1 As shown, a kind of red sandstone subgrade filling in rainy area includes waterproof geotextile 1 and side slope 2 and also includes red sandstone soil road bed 3 and red sandstone soil embankment 4, and the bottom of described red sandstone soil embankment 4 is provided with waterproof geotextile 1 A layer of waterproof geotextile 1 is laid through the base, a layer of waterproof geotextile 1 is laid on the contact surface of the red sandstone soil embankment 4 and the red sandstone soil road bed 3, and a layer of waterproof geotextile is laid on the top of the red sandstone soil road bed 3 Cloth 1, the red sandstone soil embankment 4 and the red sandstone soil roadbed 3 are provided with side slopes 2 on both sides.

[0030] Wherein, a kind of red sandstone subgrade filling in rainy area according to claim 2 is characterized in that, said waterproof geotextile 1 is provided with 3 layers altogether; According to claim 2, a kind of red sandstone subgra...

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Abstract

In one embodiment, a red sandstone subgrade filling structure used in a rainy area and a construction method of same are provided. The construction method employs red sandstone earthwork, cement, waterproofing geotechnical cloths, edge-covering cohesive soil, and a subgrade construction mechanical device. Three layers of waterproofing geotechnical cloths are respectively arranged on the bottom ofthe subgrade, on the bottom of the roadbed, and on the top of the roadbed. Subgrade slopes are coated by the edge-covering cohesive soil. Embankments are formed with the red sandstone via layered filling. The roadbed is processed by cement mixed with ash. The method not only effectively protects the stability of the red sandstone, but also guarantees quality and security. The structure is economical and environment-friendly when being used in a south rainy red sandstone area where soil is difficult to fetch.

Description

technical field [0001] The invention belongs to the field of highway and municipal engineering construction, and specifically relates to a red sandstone subgrade filling and construction structure and construction method in rainy areas. Background technique [0002] There are a large amount of red sandstone in the rainy provinces and regions in southern my country (Jiangxi, Hunan). Due to the particularity of its material itself, it is only used in a small amount as roadbed filler in low-grade highways, and a large number of quality problems have occurred. In these areas, if the red sandstone is not used as abandoned earth, it will occupy a large amount of land, and it is necessary to borrow qualified earth, which will increase a lot of investment and land acquisition. This construction method is based on the chemical and physical properties of red sandstone, the classification and characteristics of red sandstone, and then the improvement and research of construction method...

Claims

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Application Information

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IPC IPC(8): E01C3/04
CPCE01C3/04
Inventor 张涛吕雨李茂王瀚
Owner CHINA MCC17 GRP
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