摘要
针对某水电站消力池高边坡,利用FLAC3D软件非线性有限差分法初步计算,得出坡体潜在滑动面的位置,建立了基于块体理论的非连续变形分析(DDA)块体系统分析模型。利用该模型分析了现状边坡和加固后边坡的位移与强度参数之间的关系,得出了边坡在加固前后的极限内摩擦角及相应的稳定安全系数。结果表明,该边坡在加固前安全系数较小,存在失稳的可能性,采用推荐方案预应力锚索加固后,边坡的稳定安全系数有显著提高,满足正常运行的要求。
The software FLAC3D based on the nonlinear finite difference method was used to obtain the position of potential sliding surface of the high stilling pool slope in a hydropower station. A block system analysis model was developed based on the discontinuous deformation analysis （DDA）. This model was used to analyze the relationship between the displacement and strength parameter of the current slope and reinforced slope,which provided the ultimate internal friction angle and the corre- sponding stability safety factor of the slope before and after reinforcement. The results showed that the slope has a relatively smaller safety factor and is likely to be instable before reinforcement. After the reinforcement with the prestressed anchor cable, the safety factor of the slope increased significantly to meet the requirements of normal operation.
出处
《南水北调与水利科技》
CAS
CSCD
北大核心
2013年第3期71-75,81,共6页
South-to-North Water Transfers and Water Science & Technology
基金
江苏省自然科学基金青年基金项目"基于数值流形方法的连续-非连续性岩体耦合分析模型研究"(SBK201240863)
