斜沟矿8#煤顶底板破坏带发育高度研究

Research on the Growth Altitude of No.8 Coal Roof and Floor Damage Zone in Xiegou Coal Mine

以西山煤电(集团)公司斜沟矿8#煤为研究对象,采用井下仰(俯)孔注水测渗漏法和瞬变电磁法实测导水裂缝带高度,综合确定18101工作面顶板冒落带高度30.7 m,导水裂隙带高度70m,底板破坏带深度31 m;18102工作面冒落带高度32 m,导水裂隙带高度74.8 m,底板破坏带深度32 m。该数值对斜沟矿8#煤开采中顶底板"三带"预测与矿井防治水安全评价具有一定的借鉴意义。

Takes Xishan coal and electricity （group） company Xiegou coal mine No. 8 coal as the research ob- ject, uses the underground uphole （down hole ） water injection test leakage method and transient electromagnetic method to measure the height of water flowing fractured zone, comprehensively determine that the roof caving zone height in 18101 working face is 30.7 m, the water flowing fractured zone height is 70 m, floor damage zone depth is 31 m. In 18102 working face caving zone of top wall height is 32 m, the water flowing fractured zone height is 74.8 m, floor damage zone depth is 32 m. The numerical value has certain reference significance for the forecast of roof and floor ＂three zones＂ and the safety evaluation of prevention and control of coal mine water in No. 8 coal mining of Xiegou coal mine