摘要
采用相似材料模拟方法,建立巨厚岩浆岩下煤层开采模型,研究了巨厚覆岩下离层空间和涌水通道的形成过程及发育规律。研究表明:高位巨厚覆岩底部离层空间位于弯曲带、离层空间附近岩层富水性强、充足离层发育时间是形成离层水的条件;巨厚覆岩底部离层水形成后,下方竖向未贯通裂隙在巨厚覆岩破断运移冲击作用下扩展为层间贯通裂隙,并在离层空间四周形成涌水通道,由此产生高位巨厚覆岩离层水突涌隐患。可采用充填开采、条带开采、离层注浆等方式消减离层空间,采用超前钻孔疏水切断补给水源及疏放离层水等措施。
the Coal seam mining model under giant thickness magrnatic rock was built by similar material simulation method, forma- tion process and development rules of roof separation space and water inrush pathway under giant thickness overlying strata was stud- ied. The results showed that separation space at the bottom of high level and giant thickness overlying strata, rock stratum was water a- bundance around separation space, enough separation development time was key point to formed separation water, when separation wa- ter at the bottom of giant thickness overlying strata formed, the vertical unthrough fractures below developed into inter layers through fractures under giant thickness overlying strata movement, and water inrush pathway formed around separation space, separation water inrush dangerous appeared in high level and giant thickness overlying strata. Then separation space could be decreased by backfill min- ing, strip mining and separation grouting and so on, and some measurements such as water supplies could be cut by advanced bore and separation water drainage were also applied.
出处
《煤矿开采》
北大核心
2016年第3期24-27,共4页
Coal Mining Technology
基金
国家自然科学基金资助项目(51374139)
山东省自然科学基金项目(ZR2013EEM018)
关键词
巨厚覆岩
离层水
涌水通道
相似材料模拟
giant thickness overlying strata
separation water
water inrush pathway
similar material simulation
作者简介
高琳（1990-），男，山东泰安人，硕士研究生，主要从事矿山压力与岩层控制方向的研究。
