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Method for improving slope stability of expansive soil and controlling structural damage of expansive soil

A technology of structural damage and stability control, applied in the fields of providing expansive soil slope treatment, improving the stability of expansive soil slopes and controlling the structural damage of expansive soils, can solve problems affecting the stability of expansive soil slopes, cracks, etc., and achieve reduction The effect of small moisture content variation range, good effect, strong adaptability and anti-overturning ability

Inactive Publication Date: 2013-05-08
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above technical measures have certain effects in treating expansive soil slopes, there will still be problems such as cracks that affect the stability of expansive soil slopes after a long period of time.

Method used

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  • Method for improving slope stability of expansive soil and controlling structural damage of expansive soil
  • Method for improving slope stability of expansive soil and controlling structural damage of expansive soil
  • Method for improving slope stability of expansive soil and controlling structural damage of expansive soil

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] A method for stabilizing expansive soil slopes, the steps of which are as follows:

[0027] (1) Excavate the expansive soil slope to be treated to the design elevation. For expansive soil slopes with large slope ratios, overlying loads or unstable slopes, which are easy to slide, step-shaped excavation is adopted; It is stable and can be excavated directly parallel to the original slope;

[0028] (2) The surface of the expansive soil slope is covered with geomembrane, and the geomembrane is divided into several steps for laying according to needs. When the height difference of the slope is large, the slope should be graded;

[0029] (3) Retaining walls are laid on the surface of the excavated expansive soil slope; except for the revetment retaining walls, the remaining retaining walls at all levels adopt flexible support structures, and the inner slope toes of ...

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Abstract

The invention discloses a method for improving slope stability of expansive soil and controlling structural damage of the expansive soil. An expansive soil slope form obtained through the method prevents direct contact of the expansive soil and the atmosphere and effectively avoids weathering of the expansive soil. A water-proof geomembrane is covered on a surface layer of the expansive soil, drainage facility is arranged on the surface layer of the expansive soil, variation range of water-containing rate in the expansive soil can be effectively reduced, and expansive deformation of the expansive soil is reduced. An overlaying load function further limits expansive and shrinkage deformation of the expansive soil and generation and development of fractures, avoids structural damage of the expansive soil, and prevents the structural strength from being reduced, each stagee of stopping wall adopts a flexible protection structure which can avoid damage of the structure caused by discordant deformation between the expansive soil and the structure, so that a slope protection structure has strong capacity to be adapted to deformation and antidumping capacity. The method for improving slope stability of expansive soil and controlling structural damage of the expansive soil is simple and convenient to construct and good in effect.

Description

technical field [0001] The invention provides a treatment method for expansive soil slopes, which belongs to the field of geotechnical engineering, and in particular relates to a method for improving the stability of expansive soil slopes and controlling the structural damage of expansive soils and preventing the expansion of expansive soils from causing slope cracks. Background technique [0002] Expansive soil has the characteristics of water absorption expansion and loss of water contraction, so it is very easy to form cracks in the soil, and the formation and development of cracks are the main factors affecting slope instability. Expansive soils are widely distributed in my country, and our country is in a period of rapid development and construction, so it is inevitable that engineering projects will be selected in expansive soil distribution areas. Disasters such as collapses and landslides often occur on expansive soil slopes. Once they occur, the impact on local peop...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D17/20E02D1/00
Inventor 王保田张文慧俞海洲杜妍平赵辰洋
Owner HOHAI UNIV
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