摘要
铜街子水电站大坝基础存在有控制大坝抗滑稳定和承载力的C_5层间错动带和断层破碎带。文中介绍了高压喷射冲洗工艺首次在我国重力坝基础处理上的应用。C_5层间错动带、断层破碎带经高压喷射冲洗水泥灌浆后,应用超声波测试检查和分析.达到了改变软弱结构面的结构成分和提高坝基抗滑稳定能力.为水电站坝基处理提供了一条新的途径。
A bedding fault zone in layer C5 and a fractured fault zone which determine the stability against sliding and bearing capacity of the dam exist in the dam foundation of Tongjiezi project. The first use of high pressure jet and wash technology in foundation treatment of gravity dam is presented. After high pressure jet and wash ,cement grouting ,the bedding fault zone in layer C5 and fractured fault zone were tested, checked and analyzed by supersonic wave. The results show that the structural composition of weak plane was changed and dam foundation stability against sliding was improved .Therefore, it is a new way for dam foundation treatment of hydropower project.
出处
《四川水力发电》
1992年第A05期29-34,共6页
Sichuan Hydropower
关键词
高压喷射冲洗
断层
水电站
坝基
high pressure jet and wash, stability against sliding, bedding fault zone in layer C_5, test by supersonic wave.
