大采空区覆岩破坏高度测控试验分析  

Experimental study on detecting and controlling the height of overburden rock damage of goaf of large scale mined area under the Xitian River

作　　者：任奋华[1] 蔡美峰[1] 来兴平[1] 李玉民[1] 叶力进 李建明[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]宁夏煤业集团,银川752100

出　　处：《西安科技学院学报》2004年第1期9-11,共3页

基　　金：国家自然科学基金项目(50074002)

摘　　要：确定采空区上覆岩层破坏高度,对"三下"煤层安全、高效开采具有重要意义。利用彩色钻孔电视系统对覆岩破坏高度、现场钻孔冲洗液漏失量和钻孔水位变化等进行观测与分析,摸清煤层开采后大采空区上覆岩层内垮落带和导水裂缝带的发育高度及其分布形态和特点。这对安全、高效开采和大采空区围岩稳定性有效控制和定量化预测预报提供依据。The determination of damage height of superincumbent stratum of goaf has immense meaning for safety and reasonable exploitation of coal seam under water body, building and railway. The correlation detections are studied in terms of the damage height of overburden rock, the inner collapse zone and the expanding height of crack zone of homing water and their distribution form after excavating the superincumbent stratum of coal seam are shown by the leakage of in-situ drilling fluid and the change of water level in bore and the images from color TV system in bore.

关 键 词：大采空区 覆岩破坏高度 彩色钻孔电视 定量化预报 

分 类 号：TD326[矿业工程—矿井建设]