摘要
锦屏一级拱坝坝址区工程地质条件十分复杂,存在f2、f5、f8等断层、层间挤压带、煌斑岩脉X及一系列规模不等的卸荷张开裂缝或深部裂缝等不良地质构造,需对这些地质缺陷进行处理。通过现场勘测试验及分析研究,对拱坝左岸基础采取固结灌浆和混凝土置换相结合的处理方案。计算分析表明,通过利用混凝土垫座、抗力体固结灌浆、对断层及煌斑岩脉进行混凝土网格置换以及采用抗剪传力洞等措施,提高基础承载能力,可以满足拱坝设计的要求。
Engineering geological conditions at Jinping Ⅰ damsite area are rather complicated. There are fault zones f2, f5 and f8, crushed zone between the layers, lamprophyre veins, various scale relaxation fissures or deep - seated fissures. Through site investigation and tests, it is decided that the arch dam left abutment foundation is to be treated by cosolidation grouting and concrete replacement. The computation and analysis indicate that by use of concrete cushions, the resisting rock mass consolidation grouting, the lamprophre veins treated by concrete grids and shear resisting concrete plugs, the improved foundation can satisfy the load -bearing capacity requirements for the arch dam design.
出处
《水电站设计》
2009年第2期7-12,22,共7页
Design of Hydroelectric Power Station
关键词
拱坝
基础处理
有限单元法
锦屏一级水电站
arch dam
foundation treatment
finite element method
Jinping Ⅰ Hydropower Station
作者简介
牟高翔（1976-），男，四川江油人，硕士，高级工程师，主要从事水利水电工程结构设计及监测反馈分析工作。
