三维有限元法强度折减法在某岩质边坡加固中的应用  

Numerical simulation and analysis of high rock slope based on the finite element method

作　　者：母传伟 何方维 裴恒 

机构地区：[1]中冶沈勘秦皇岛工程技术有限公司,河北秦皇岛066001

出　　处：《中国矿业》2015年第9期137-140,共4页China Mining Magazine

摘　　要：高大岩质边坡的稳定性对其下部建筑物和工业场地的安全至关重要,有限元强度折减法数值模拟分析岩质边坡破坏机制是一条对岩质边坡稳定性进行可靠分析的有效方法。文章结合强度折减理论的有限元应力分析法对柏泉选厂西边坡的开挖支护过程进行了数值模拟,能够科学分析边坡的变形破坏机制及演变过程。该方法把锚杆等支挡结构的共同作用和地下水的影响统一考虑,从而可以验证边坡加固措施的合理性,与其他方法相比实用性更强。边坡稳定模拟分析所依据的岩土物理力学参数来自工程地质勘察报告,数据真实可靠,分析结果切合实际。边坡稳定性分析结果直接指导边坡加固设计,根据边坡岩体应力情况调整锚杆规格和布局,从而使边坡加固措施更加安全可靠、经济合理。The stability of high rock slope is very important to the safety of its lower building and industrial site. Simulation and analysis on failure mechanism of rock slope by finite element strength reduction method is an effective way of analysis on reliable stability of rock slope. In this study, finite element stress analysis method which combined with strength reduction theory was used to numerically simulate excavation and support processes in west slope of Baiquan Iron ore mine, and can scientifically analyze mechanism of deformation and failure and evolution process of slope. This is a more practical method in which interaction of supporting and retaining structure such as anchor etc. and the effect of groundwater are synthetically considered, and can verify rationality of slope reinforcement measures. The physics and mechanics index of soil and rock accorded in simulating and analyzing on stability of slope are from engineering geological investigation report and more reliable, and the analysis result is practicable. The analysis result of slope stability can be applied to guide directly strengthening design of slope, to adjust size and layout of anchors in according with stress condition of rock slope,to make reinforcement measures of slope to be more safe, reliable, economic and reasonable.

关 键 词：有限元法 岩质边坡 数值模拟与分析 边坡稳定性 

分 类 号：TU457[建筑科学—岩土工程]