近距离煤层综放开采矿压显现规律分析

Analysis of Fully Mechanized Caving Mining Mine Pressure Behavior Law in Close Distance Coal Seam

通过对新疆屯宝煤矿近距离煤层综放开采的矿压显现规律分析,得出工作面开采过程中形成"小-大初次来压和周期来压"的矿压显现规律,压力值一直处于上下波动,每次到达波峰为一次来压,老顶每4天出现一次来压,而工作面每日往前接近3 m左右,老顶周期来压的步距约12 m.

Fully mechanized caving mining mine pressure behavior law in Xinjiang Tunbao coal mine close distance coal seam is analyzed. It obtains that the working face in the process of mining forms the rule of small- big first weighting and periodic weighting,pressure value ups and downs all the time,getting to crest is as a pressure each time,upper roof appears a pressure every four days,working face advances to 3 m or so every day,the upper roof periodic weighting step is about 12 m.