【作者】 张林； 陈建康； 张立勇； 陈新； 胡成秋；

【Author】 Zhang Lin;Chen Jiankang;Zhang Li-yong;Chen Xin;Hu Chengqiu College of Hydraulic and Hydroelectric Eng.,Sichuan University,Chengdu 610065 China

【机构】 四川大学水利水电学院；

【摘要】 本课题采用三维地质力学模型试验研究方法,分析了溪洛渡拱坝坝肩坝基的整体稳定性和安全性。研究中采用新型模型材料——变温相似材料及试验模拟新技术,模拟了岩体中的软弱结构面及主要节理裂隙,在一个模型上实现了强度储备与超载法相结合的综合法试验。通过试验获得了坝肩坝基的变形特征、失稳的破坏过程、破坏形态和破坏机理,确定了综合稳定安全度,评价了工程的安全性,提出了对工程加固处理的措施和建议。更多还原

【Abstract】 The three-dimensional geomechanical model test is used to analyse the over all resistance and securityof Xiluodu arch dam base and abutment. A new model test material called as temperature analogous materialwhose strength varies with temperature and corresponding model test technique are used to simulate the weakstructural planes and the main joint crannies. Thus a comprehensive method that considers both overload andstrength-decreasing is realized in one model. From the test, the destruction process, destruction condition and thefailure mechanism of the dam base are achieved. The synthetic buckling safety factor was determined and thesecurity of the engineering was evaluated. Suggestions of reinforcing treatment are proposed.更多还原