复杂地基上高拱坝坝肩稳定破坏试验研究  

Failure Experimental Study on Stability of High Arch Dam on Complex Foundation

作　　者：丁泽霖[1] 张林[1] 姚小林 杨宝全[1] 陈建叶[1] 

机构地区：[1]四川大学水力学与山区河流开发保护国家重点实验室水利水电学院,四川成都610065 [2]重庆电力公司綦南供电局,重庆401420

出　　处：《四川大学学报（工程科学版）》2010年第6期25-30,共6页Journal of Sichuan University (Engineering Science Edition)

基　　金：国家自然科学基金资助项目(50879050);国家重点基础研究发展计划资助项目(2010CB226802)

摘　　要：大岗山水电站是大渡河干流近期开发的大型水电工程之一,其坝址区地质构造复杂,两岸坝肩岩脉、断层比较发育,构造型式以小断层、沿岩脉发育的挤压破碎带和节理裂隙为特征。针对大岗山拱坝复杂地质构造特点,采用3维地质力学模型试验中的综合法进行坝肩稳定问题研究,通过超载与降强相结合的地质力学模型破坏试验,研究了拱坝坝肩的变形特性,得到坝肩、坝基失稳的破坏过程和破坏形态,确定坝肩综合稳定安全度为5.0～5.6。Dagangshan Hydroelectric Power Station is a large-scale hydroelectric power station developed recently in the main stream of Dadu River.According to the complex geological structures of Dagangshan arch dam,the stabilities of the dam abutment was studied by the comprehensive method of 3D geomechanical model test.Considering both factors of overloading and strength-decreasing,the failure model test was carried out.The deformation character of arch dam abutment was studied,the failure process and final failure pattern of dam abutment and foundation were obtained,and the comprehensive safety factor of dam abutment was determined as 5.0 ～ 5.6.

关 键 词：复杂地基 地质力学模型 坝肩稳定 综合法 

分 类 号：TV321[水利工程—水工结构工程]