声波测试技术在李家河水库坝基开挖爆破中的应用  

Applications of Acoustic Measurement on Lijiahe Dam Foundation Excavation Blasting

作　　者：闫建文[1] 徐传召[1] 郭仪 王海仓 

机构地区：[1]西安理工大学水利水电学院,陕西西安710048 [2]西安市辋川河引水李家河水库工程建设管理处,陕西西安710048 [3]眉县地下水勘测管理处,陕西眉县722306

出　　处：《电网与清洁能源》2011年第6期84-87,共4页Power System and Clean Energy

摘　　要：声波测试技术能够快速检测岩体的损伤程度,在坝基开挖爆破前后进行声波测试并将测试结果进行对比,能够检测出爆破对岩体的影响范围,及时反馈并指导爆破网络设计。李家河水库坝址岩体以花岗岩为主,在右坝肩EL860—EL845层Ⅰ区开挖爆破中应用声波测试进行检测,结果表明,爆破对岩体的影响范围在0.375 m以内,爆破对坝基的影响较小。The acoustic measurement technique can rapidly detect the extent of rock damage in the foundation. Comparison of the measured results before and after dam the foundation excavation blasting can not only detect the impact of blasting on the scope of rock, but also timely feed back and provide guidance to the blasting network design. As the location of the Lijiahe reservoir dam is dominated by granite rock, the acoustic measurement is app- lied duringthe excavation blasting for right abutment layer EL860--- EL845 I area. The measured result shows that the affected area is within 0.375m with little impact on the dam foundation.

关 键 词：坝基开挖爆破 声波测试 李家河水库 

分 类 号：TV542[水利工程—水利水电工程]