摘要
介绍弱能量爆破治理岩爆的原理,以锦屏水电站二级引水隧洞为背景工程,采用FLAC3D程序模拟高地应力的分布,采用Russenses岩爆判别法确定应力释放部位,拟定4种应力释放爆破方案,每个方案进行3组爆破试验,对试验成果进行分析,试验表明通过对爆炸能量的精心控制,可以起到释放高地应力从而达到治理岩爆的目的。但该方法只是把应力向深部推移,并不能消除地应力,因此及时的支护手段还是必须的。
The paper introduced the principle of management of weak energy blasting for rock burst treatment, taken the Jinping hydropower station diversion tunnel as background engineering,the distribution of high stress was simulated by FLAC3D dydropower,the stress release sites were confirmed adopting Russenses rock burst discriminating method,four kinds of stress release blasting scheme were drafted,conducted three groups of blasting test for each scheme,the test results are analyzed. Experiments show that the weak energy blasting can release high ground stress and achieve the goal of controlling rock burst through careful control of the explosion energy. But the method is only to process the stress to the deep rock,do not eliminate stress,so timely supporting measures should be indispensable.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2013年第S2期3675-3680,共6页
Chinese Journal of Rock Mechanics and Engineering
基金
国家自然科学基金资助项目(51179013)
水利部公益性行业科研专项项目(201001009)
关键词
隧道工程
弱能量爆破
岩爆
锦屏水电站
tunnelling engineering
weak energy blasting
rock burst
Jinping hydropower station
