摘要
通过对刘桥二矿452采区钻孔资料中的各项测试结果进行分析,探讨采空区煤层覆岩破坏情况,用钻孔确定垮落带及导水裂隙带的高度。
In the essay, all results of No. 452 borehole in the Second Mine of Liuqiao have been analyzed. The destruction of rock overlaying over coal seams in the mined-out area is discussed. Some methods of determining the height of collapse and water-transmitting fracture zone have been introduced.
出处
《甘肃地质》
2009年第1期94-96,共3页
Gansu Geology
关键词
垮落带
导水裂隙带
回采上限
collapse zone
water＇transmitting fracture zone
upper limitation of recovery
