岩石力学与工程学报
巖石力學與工程學報
암석역학여공정학보
CHINESE JOURNAL OF ROCK MECHANICS AND ENGINEERING
2013年
z2期
3675-3680
,共6页
刘美山%吴新霞%丁秀丽%赵根%谌林云
劉美山%吳新霞%丁秀麗%趙根%諶林雲
류미산%오신하%정수려%조근%심림운
隧道工程%弱能量爆破%岩爆%锦屏水电站
隧道工程%弱能量爆破%巖爆%錦屏水電站
수도공정%약능량폭파%암폭%금병수전참
tunnelling engineering%weak energy blasting%rock burst%Jinping hydropower station
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。
介紹弱能量爆破治理巖爆的原理,以錦屏水電站二級引水隧洞為揹景工程,採用 FLAC3D程序模擬高地應力的分佈,採用Russenses巖爆判彆法確定應力釋放部位,擬定4種應力釋放爆破方案,每箇方案進行3組爆破試驗,對試驗成果進行分析,試驗錶明通過對爆炸能量的精心控製,可以起到釋放高地應力從而達到治理巖爆的目的。但該方法隻是把應力嚮深部推移,併不能消除地應力,因此及時的支護手段還是必鬚的。
개소약능량폭파치리암폭적원리,이금병수전참이급인수수동위배경공정,채용 FLAC3D정서모의고지응력적분포,채용Russenses암폭판별법학정응력석방부위,의정4충응력석방폭파방안,매개방안진행3조폭파시험,대시험성과진행분석,시험표명통과대폭작능량적정심공제,가이기도석방고지응력종이체도치리암폭적목적。단해방법지시파응력향심부추이,병불능소제지응력,인차급시적지호수단환시필수적。
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.