云南水力发电2001，Vol.17Issue(1)：35-39,5.
小湾水电站地下厂房洞室围岩爆破震动的动力特征
Dynamic Characteristics of Surrounding Rock Blasting-Caused Shock of Underground Powerhouse Chambers for Xiaowan Hydropower Project
摘要
Abstract
The Xiaowan underground powerhouse surrounding rock blasting particle vibration prediction model was established on the basis of the site blasting shock test and measurement. The shocking safety distances for blasting with various charges and safe charge for specific distance are both determined according to the particle vibration velocity safety control standard. The high test vibration velocity and high frequency recorded at the site have proved that the rockmass of the project is rather sound. The anisotropy of blasting shock depends on the anisotropy of the surrounding rock properties and structure. The test results also indicate that the restraint of the surrounding rock has scale effect. Small periphery and intensive restraint enhance blasting effect, otherwise vibration velocity decreases and frequency reduces.关键词
地下厂房/围岩/爆破震动/动力约束/尺度效应/各向异性Key words
underground powerhouse/surrounding rock/blasting shock/dynamic effect/scale effect/anisotropy分类
矿业与冶金引用本文复制引用
王民寿,胡继生,杨兴国,熊敏峰,谢培忠,张文仲..小湾水电站地下厂房洞室围岩爆破震动的动力特征[J].云南水力发电,2001,17(1):35-39,5.基金项目
“九五”国家科技攻关项目子题编号 （）
