龙塘水库大坝深层抗滑稳定研究  

Stability Analysis of Longtang Reservoir Dam against Deep Sliding

作　　者：刘烁楠 肖伟 邹德兵 LIU Shuonan;XIAO Wei;ZOU Debing(Changjiang Survey,Planning,Design and Research Co.,Ltd.,Wuhan 430010,China)

机构地区：[1]长江勘测规划设计研究有限责任公司,湖北武汉430010

出　　处：《水电与新能源》2024年第10期10-14,18,共6页Hydropower and New Energy

摘　　要：龙塘水库重力坝坝基分布有较多的缓倾角裂隙面,裂隙面产状各异。结合地表地质调查、勘探平洞及钻孔揭示,确定优势裂隙面及大坝深层滑动模式。采用刚体极限平衡法和有限元应力积分法,对龙塘重力坝坝基深层抗滑稳定进行了计算,并对倾向下游的缓倾角裂隙面倾角进行了敏感性分析。结果表明,静动力工况下各坝段的深层抗滑稳定安全系数均满足规范要求,大坝深层抗滑稳定是有保证的。The foundation of the gravity dam in Longtang Reservoir is of many gently inclined fracture surfaces with different orientations.The dominant fracture surfaces of the foundation and the deep sliding mode of the dam are determined by surficial geological survey and exploration adits and drilling.Then,the rigid body limit equilibrium method and the finite element stress integration method are adopted to analyze the stability of the foundation of the Longtang gravity dam against deep sliding.Also,sensitivity analysis is conducted on the inclination angle of the downstream gently inclined fracture surfaces.The results show that the static and dynamic stability safety factors against deep sliding of each dam monolith meet the specification requirements.The stability of the dam is guaranteed.

关 键 词：龙塘水库 重力坝 刚体极限平衡法 有限元应力积分法 深层抗滑稳定 

分 类 号：TV642.3[水利工程—水利水电工程]