深厚覆盖层上的高闸坝整体稳定地质力学模型试验研究  

Experimental Study on Global Stability of High Gate Dam Founded on Deep Overburden by Geomechanical Model

作　　者：唐茂颖[1,2] 段斌 张林[3] 陈建叶[3] 杨宝全[3] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都610059 [2]国电大渡河流域水电开发有限公司,四川成都610041 [3]四川大学水利水电学院,四川成都610065

出　　处：《水力发电》2017年第6期105-109,共5页Water Power

基　　金：国家自然科学基金(51379139);国家自然科学基金青年基金(51409179);教育部博士点基金(20100181110077)

摘　　要：丹巴水电站是目前中国在深厚覆盖层上即将开工建设的最高闸坝,拦河闸闸基础覆盖层最大厚度达127.66m,且结构及组成复杂,闸坝最大坝高38.5 m。基于闸基加固处理方案,进行地质力学模型综合法试验,研究了丹巴高闸坝整体稳定问题。研究得到了适用于丹巴闸坝基础覆盖层和置换层的变温相似材料,揭示出丹巴闸坝变位分布特征、发展过程,以及闸坝基础失稳破坏特征和机理,评价了丹巴闸坝整体稳定安全性。Danba Hydropower Station will construct a highest gate dam on deep overburden in China. The overburden has a maximum thickness of 127.66 m and complex structure. The maximum dam height of gat dam is 38.5 m. Based on the reinforcement treatment scheme of gate dam foundation, the global stability of gate dam is studied by comprehensive method test of geological mechanics model. Based on the study, the temperature analogous materials of Danba dam foundation overburden and replacement layer are found, the characteristics and development process of the deformation distribution of gate dam and the failure characteristics of dam foundation are revealed. The global stability of the dam is evaluated.

关 键 词：深厚覆盖层 闸坝整体稳定 强度弱化效应 变温相似材料 综合法试验 丹巴水电站 

分 类 号：TV148[水利工程—水力学及河流动力学]