摘要
随着竖井开采深度的逐渐增加,岩石赋存环境更加复杂,高地应力导致的岩爆、地压突出等灾害也更加频发,其中岩爆危害性最大。因此对其危险性进行评价,进而采取有效的防治措施具有重要的现实意义。本文通过对国内第一深井——云南会泽3~#竖井的地质勘察资料及岩石力学实验数据分析,总结了该竖井周边围岩的应力场分布及岩石力学性质,揭示了会泽3~#竖井的高应力灾害危险区域分布特征;并结合现场实际施工情况,提出了岩石力学监测、围岩卸压、合理支护及日常安全施工管理等防治防护措施。研究结论对超深竖井施工的岩爆防治具有一定的指导意义。
With the increasing of the shaft depth, the depositing environment of rock will be more complex, the rock burst and other disasters caused by high initial stress will occur frequently. Therefore, it is important to estimate the rock burst risk and take some measures in the deep shaft. In this paper, by analyzing the geological prospecting data and rock mechanics test data of＂ No.3 shaft in Yunnan tluize, the deepest in domestic, concluded rock stress distribution and rock mechanics properties around the shaft, revealed the distribution characteristics of high stress disaster danger zones. According to above characteristics and combined with the actual situation of construction, prevention and control measures were put forward, such as rock mechanics monitoring, surrounding rock pressure relief, reasonable support and daily safety construction management. The conclusion will have certain guiding significance in preventing rock burst in the construction of ultra deep shaft.
出处
《中国矿山工程》
2016年第4期1-8,共8页
China Mine Engineering
关键词
超深竖井
高地应力
灾害
岩爆
ultra deep shaft
high initial stress
disaster
rock burst
