Research on softening rule of direct shear strength parameters
of soil of slide zone in Three-Gorge Reservoir Region caused by water

LI Wei-Shu; XIA Ye; LE Jun-yi

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Research on softening rule of direct shear strength parameters of soil of slide zone in Three-Gorge Reservoir Region caused by water

更新时间：2026-06-25

- Research on softening rule of direct shear strength parameters of soil of slide zone in Three-Gorge Reservoir Region caused by water
- Vol. 27, Issue S1, (2006)
- 作者机构：
  
  1. 长江科学院水利部岩土力学与工程重点实验室,湖北,武汉,430010
  2. 长江科学院重庆岩基研究中心,重庆,400014
  3. 重庆市涪陵区水利电力局，涪陵,重庆,408000
- 作者简介：
- 基金信息：
- DOI：
  CLC： P642.11+5
- Online First：15 December 2006，
  
  Published：2006
- 稿件说明：
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LI Wei-Shu, XIA Ye, LE Jun-yi. Research on softening rule of direct shear strength parameters of soil of slide zone in Three-Gorge Reservoir Region caused by water[J]. 2006, 27(S1).
DOI：

LI Wei-Shu, XIA Ye, LE Jun-yi. Research on softening rule of direct shear strength parameters of soil of slide zone in Three-Gorge Reservoir Region caused by water[J]. 2006, 27(S1). DOI：

摘要

通过对三峡库区典型滑带不同状态的原位直剪对比试验

研究了粘土、粉质粘土及土石混合体三类滑带（体）土在不同含水状态下的直剪强度参数及c，φ值随含水率的变化规律。在大量的数据基础上建立了滑带（体）土c，φ值与含水率之间的经验关系，分析了水对不同性质的滑带（体）土的作用机理，得出了蓄水或者含水率变化后滑带（体）土c，φ值的经验公式，量化了含水率变化（水位涨落）对直剪强度参数的弱化程度。

Abstract

According to the contrastive in-situ direct shear test of the slide zone in the Three-gorges Reservoir Region in different conditions

changed rule of direct shear strength parameters and the value of c andφ which change along with water content about three kinds of soil of slide zone in different water contents conditions

such as clay

silty clay and the earth-rock aggregate

is researched. Experimental relationship between values of c andφ and water conyenton soils of slide zone is established based on plentiful data; and functionary mechanism of different characterized soil of soils zone caused by water is analyzed; then experimental formula of value of c and φ when water is sluiced or water content changes; finally softening degree of direct shear strength parameters caused by water content(water level changing) is quantified .

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