条形药包硐室爆破技术在山体危岩排险施工中的应用

危岩体硐室爆破一次排险量大,施工速度快,是大方量应急排险的首选爆破方案。本次巫山山体危岩硐室爆破排险,通过详细的地质调查和地形地貌测绘,采取信息化指导施工,安全、快速地完成了应急排险任务,一次排险28.7万m3,历时46天,取得了较好的经济效益和社会效益。论述了本次爆破方案的设计、爆破参数的选择以及施工技术,介绍了爆破效果,总结了经验体会。

Application of Chamber Blasting with Linear Charge in Unstable Rock Risk-elimination

Unstable rock chamber blasting is the first blasting scheme for large volume emergency treatment with rapid construction speed.With detailed geological survey and topography mapping,and with informational instruction,the risk-elimination by chamber blasting was carried in Wushan,287000m3 unstable rocks were eliminated in 46 days.The paper discussed the blasting scheme design,blasting parameter selection,construction technology and blasting effect with the experience.