声波测试技术在李家河水库坝基开挖爆破中的应用

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0.375m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 hy granite rock the acoustic measurement is applied during the excavation blasting for right abutmentlayer EL860-EL845 I area The measured result shows that the affected area is within 0.375m with little impact on the dam foundation