Study on unsaturated hydro–mechanical coupling model of fractured
rock mass based on DDA

LIU Xian-shan

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Study on unsaturated hydro–mechanical coupling model of fractured rock mass based on DDA

更新时间：2026-06-25

- Study on unsaturated hydro–mechanical coupling model of fractured rock mass based on DDA
- Vol. 27, Issue S2, (2006)
- 作者机构：
  
  重庆大学土木工程学院,重庆,400044
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU452
- Online First：16 December 2006，
  
  Published：2006
- 稿件说明：
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LIU Xian-shan. Study on unsaturated hydro–mechanical coupling model of fractured rock mass based on DDA[J]. 2006, 27(S2).
DOI：

LIU Xian-shan. Study on unsaturated hydro–mechanical coupling model of fractured rock mass based on DDA[J]. 2006, 27(S2). DOI：

摘要

岩体饱和–非饱和渗流、应力耦合作用对工程岩体的强度和稳定性有十分重要的影响。目前对于裂隙岩体饱和渗流应力耦合的研究取得了一些进展，但在很多工程领域不能简单地采用饱和渗流分析。根据DDA力学计算和非饱和渗流计算原理，提出了新的基于DDA方法的非饱和渗流应力耦合模型。并给出了在库水位骤降工况下的边坡水力耦合算例，其计算结果显示在库水位骤降情况下：考虑水力耦合且库水位下降较快时的安全系数要小于库水位下降慢时的安全系数；考虑水力耦合的边坡稳定安全系数要小于不考虑耦合时的安全系数。仿真实验和工程应用表明其计算成果是符合实践规律的。

Abstract

Unsaturated hydro–mechanical coupling of fractured rock mass has important influenee on the strength and stability of rock mass. In recent years

the research of saturated hydro–mechanical coupling has achieved some advances

but saturated flow can’t be adopted simply in many practical projects. Based on the mechanical theory of DDA and fluid flow analysis of fractured network

unsaturated hydro–mechanical coupling analysis model is put forward naturally. And then taking a reservoir rock slope for example

the stability of rock slope is discussed when water level of reservoir falls. And it is shown that the safety factor is lower when the water level falls quckly and when considering coupling; it is consistent with the fact.

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