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Discuss of cutting slope treatment project for expansive soil on highway(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2004年第04期
Page:
49-53
Research Field:
Publishing date:

Info

Title:
Discuss of cutting slope treatment project for expansive soil on highway
Author(s):
MAO Xin-hu
Shan xi Institute of Tra f f ic Science , Taiyuan 030006 , China ;School of Geological E ngineering an d S urveying Engineering , Chang' an University , X i' an 710054, China
Keywords:
swelling clay ; cutting slope ; big hole framework without sand; DHA mixing liquid
PACS:
P642.22
DOI:
-
Abstract:
The cutting slope of expansive soil is the co nstruction formed by dig ging the soil when the hig hw ay g oes across expansive soil .It changes na tural condition, destroy s natural physiognomy , and demolishes natural balanceable conditions of rock stress .The cutting slope of expansive soil exposes soil to a cer tain embedding depth to atmosphere , w hich directly takes action with weathering agency like rainfall , evaporation and temperature , and changes environmental and hydro-geological co nditions within the slope soil . The paper , by countering the characteristic of highway engineering for the cutting slope to ex pansive soil, summarizes the past protective measures for cutting slope of expansive soil .In order to maintain the relative stability of natural moisture co ntent of slope soil, keep the relative integ rity of its structure , remain its enough shear strength and prevent swelling deformation and sw elling force of ex pansive soil from being destroyed, the paper put forw ard a new method of using DAH mix ed solution to improv e the surface soil of ex pansive soil slope according to the past information and ex perience of dealing with the cutting slope of expansive soil . The chemical reaction will bring about between DAH mix ed solution and the elements of ex pansive soil to produce ion exchange , so as to change the property of the surface expansive soil into normal soil.Besides , the paper makes full use of the past methods to cope w ith the cutting slo pe of ex pansive so that it can look for a better new method to deal with the cutting slope .In fact , the new method not only makes full use of expansive soil and economizes the engineering investment , but also affo rest the slope and cause it to coordinate with the sur roundings.In allusio n to the characteristic of the cutting slope of ex pansive soil, the paper tries to put forw ard an economy as well as reasonable project fo r dealing with the cutting slo pe of expansive soil, and provides reference basis for building highway in the area of expansive soil.

References:

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Memo

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Last Update: 2004-12-20