李家同伴水电站坝肩开挖岩体的声波测试

Sound Wave Test Research of Rock Mass on the Dam Abutments of the Lijiaxia Hydropower Station

本文对声波试验的原理、方法作了简要介绍,并结合李家峡水电站工程一年来的实测资料,对该水电站两岸坝肩的波速分布;岩体的各向异性;波速与预裂孔线密度药量的关系;用锯末减震对水平建基保护;爆破对建基面影响的探测等问题进行了分析研究.

This paper describes briefly the principle and method of testing by sound wave. Based on the measured data taken from the Lijiaxia Hydropower Project investigations and analysis are made on the speed distribution of both abutments, the anisotropy of the rock mass, the relation-ship of wave speed and the linear charge concentration for presplitting holes, the protection of horizontal base surface by sawdust damping, detection of blasting impact on foundation surface and so on.