Protection structure of expansive soil cutting slope and construction method

A protective structure and construction method technology, applied in soil protection, infrastructure engineering, geotextiles, etc., can solve problems such as local subsidence, cracking, and increased land acquisition for roads

Inactive Publication Date: 2021-04-30
SINOHYDRO ENG BUREAU 4 +1
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Problems solved by technology

Since expansive soil is a cohesive soil that expands violently after soaking in water and shrinks significantly after dehydration, the slope constructed by traditional treatment methods is prone to cracking and partial collapse due to the influence of rain for a long t

Method used

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  • Protection structure of expansive soil cutting slope and construction method
  • Protection structure of expansive soil cutting slope and construction method
  • Protection structure of expansive soil cutting slope and construction method

Examples

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Embodiment Construction

[0023] Example of Protective Structure for Expansive Soil Cutting Slope

[0024] see Figure 1 to Figure 3 The protection structure of the expansive soil cutting slope provided by the present invention comprises two slope substrates, and the two slope substrates are arranged on the slope X of the slope in a stepwise manner. The slope matrix includes a bottom protection structure 1 , a middle protection structure 2 and a top protection structure 3 .

[0025]The bottom protection structure 1 is located below the road surface L, and the bottom protection structure 1 includes a first waterproof geotextile 11 , a foundation drainage cushion 12 and a first reinforcement layer 13 in sequence from bottom to top. Over-dig a groove at the bottom of the slope and over-dig a seepage ditch pre-installation groove at the bottom of the groove, the groove is located below the road surface L. The first waterproof geotextile 11 is arranged in the groove, and the two sides of the first waterpr...

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Abstract

The invention provides a protection structure of an expansive soil cutting slope and a construction method. The protection structure comprises a bottom protection structure, a middle protection structure and a top protection structure. The bottom protection structure sequentially comprises first waterproof geotechnical cloth, a foundation drainage cushion layer and a first reinforced layer from bottom to top; a seepage ditch is formed in the foundation drainage cushion layer; the middle protection structure sequentially comprises an internal drainage layer, a second reinforced layer and a slope cultivation soil layer from inside to outside; the internal drainage layer is connected with the foundation drainage cushion layer and can drain water to the foundation drainage cushion layer; the second reinforced layer is arranged on the first reinforced layer; the slope cultivation soil layer is located on a road surface; the top protection structure comprises second waterproof geotechnical cloth and a top protection layer; the second waterproof geotechnical cloth is arranged on the top of the middle protection structure; and the top protection layer is arranged on the second waterproof geotechnical cloth. The construction method is a method for constructing the protection structure. According to the protection structure of the expansive soil cutting slope and the construction method, the expansive soil slope can be effectively treated, and the stability of a slope base structure is maintained.

Description

technical field [0001] The invention relates to the technical field of slope protection engineering, in particular to a protection structure and a construction method for a cut slope with an expansion diagram. Background technique [0002] At present, the traditional treatment method for road expansive soil cutting slopes is generally to slow down the slope or masonry structure protection. The protection principle of the slow down slope is to reduce the sliding load through over-excavation soil. Bricks and stones are used as building materials, and the hard protection is formed by masonry with mortar or small stone concrete to increase its sliding resistance. Since expansive soil is a cohesive soil that expands violently after soaking in water and shrinks significantly after dehydration, the slope constructed by traditional treatment methods is prone to cracking and partial collapse due to the influence of rain for a long time. Phenomenon also can affect highway driving saf...

Claims

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Application Information

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IPC IPC(8): E02D17/20E02D3/10
CPCE02D17/20E02D17/202E02D3/10E02D3/106E02D2300/0084E02D2300/0085
Inventor 韩永阳王鵾鹏尚建明鲁承刚柳兵王军张丽萍刘春龙梁守锦董涛王忠海李建民俞文浩杨平尹朝霞
Owner SINOHYDRO ENG BUREAU 4
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