摘要
辽宁二道淘金矿自投产起使用浅眼留矿为主的空场采矿法采完上部矿体之后,进入21世纪初期才对矿脉厚度小于0.5m矿体采用削壁充填采矿法,所形成60万m^3采空区由于没有有效处理,其地应力传递到下部,因而在不到600m深度开采时,已经发生岩爆现象。本文对岩爆发生基础条件、采空区应力传递以及矿山岩体原始地应力的关系进行初步分析研究。
Since the Liaoning Erdaogou Gold Mine was put into operation, the mining method of shrinkage stoping with short hole had been used to mine out the upper orebody. In early 21 century, resuing filling method was used for the veins with thickness of less than 0.5m, and a 600000 m^3 goaf area was formed. Because it was not disposed effectively, and the ground stress transfers to the bottom, so rock burst has already occurred during deep mining in area less than 600m deep. This paper preliminarily analyzes and studies on the relations between basic conditions of rock burst occurrence, stress transfer in goal area and the original rock stress.
出处
《中国矿山工程》
2009年第3期28-32,共5页
China Mine Engineering
关键词
岩爆发生
基础条件
采空区
岩体地应力
关系研究
rock burst occurrence
basic conditions
goaf area
ground stress of rock mass
relation research
