祁东煤矿南部采区首采面矿压显现规律实测研究

Research on Regularity of Strata Behavior in First Mining Face in Southern Mining Area in Qidong Coal Mine

为了掌握祁东煤矿在厚泥岩顶板及长工作面条件下的矿压显现规律,对其南部采区首采面6163进行矿压观测及分析,主要包括工作面不同阶段的来压规律、超前支承压力分布规律等。根据现场实测分析得出工作面顶板呈现分区域破断,厚泥岩顶板的垮落对于矿压显现有缓和作用,工作面周期来压步距24.5 m,风巷超前影响范围51 m,机巷超前影响范围63 m。

In order to attain the behavior regularity in thick mudstone roof and long working face in Qidong coal mining, the mineral pressure of the initial mining face 6163 which is in southern area has been observed and analyzed, including law of periodic pressure at different stages and mining advanced abutment pressure distribution. Filed test and analysis show that the face roof breaks at the form of regional separation and the collapse of thick mudstone roof reveals abirritation for mineral pressure.And the periodic weighting interval is 24.5 m,the influential range of ventilation roadway and conveyor gateway are respectively 51 m and 63 m.