锦屏一级水电站f_5断层、煌斑岩脉复合灌浆技术研究  

ANALYSIS OF COMPOUND GROUTING TECHNOLOGY FOR F_5 FAULT AND LAMPROPHYRE VEIN AT JINPING Ⅰ HYDROPOWER

作　　者：王胜[1] 黄润秋[1] 祝华平[2] 

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,成都610059 [2]中国水电顾问集团成都勘测设计研究院,成都610072

出　　处：《工程地质学报》2012年第3期440-446,共7页Journal of Engineering Geology

基　　金：雅砻江水电开发联合研究基金重点项目(50539050);地质灾害防治与地质环境保护国家重点实验室人才培养课题(SKLGP2010Z008)

摘　　要：锦屏一级水电站发育的f5断层和煌斑岩脉对坝基的变形稳定、基础应力传递等极为不利,严重影响大坝稳定性及安全运营。针对f5断层、煌斑岩脉水泥灌浆存在的问题,结合f5断层和煌斑岩脉工程地质特征,开展f5断层、煌斑岩脉的水泥-化学复合灌浆加固技术研究。首先,对水泥-化学复合灌浆的作用机理进行分析,从灌浆材料、灌浆方法、现场灌浆试验、灌浆效果评价等方面进行了分析研究。研究结果表明,所采用灌浆材料可灌性较好,施工工艺、灌浆参数基本合理;灌浆后岩体透水性得到了改善,对f5断层、煌斑岩脉声波波速、变形模量等有一定程度提高,但仍然没有达到设计要求。基于水泥-化学复合灌浆存在的问题,分别从灌浆材料、灌浆参数和灌浆质量检查等方面提出了优化建议。The f5 fault and lamprophyre vein of Jinping I Hydropower have an adverse effect to deformation stabil- ity and stress transfer of dam foundation. They can seriously affect the stability and safe operation of the dam. This paper investigates the cement grout problems for the f5 fault and lamprophyre vein. It is combined with its engineer- ing geology. It examines the cement-chemical compound grouting technology from grouting materials, grouting method, and field grouting. It evaluates the grouting on the basis of mechanism of cement-chemical compound grou- ting. The results show that the use of grouting materials can be better irrigation. Construction technology and grou- ting parameters are reasonable. The permeability of rock has been improved. The wave velocity and deformation modulus of the f5 fault and lamprophyre have a certain degree of improvement. But they still do not meet the design requirements. Optimization proposal has been got from grouting materials, parameters and quality checks on the ba- sis of the grouting evaluation results.

关 键 词：锦屏一级水电站 F5断层 煌斑岩脉 复合灌浆 

分 类 号：TV223.34[水利工程—水工结构工程]