薄煤层综采工作面矿压显现规律实测分析

Actual Measurement and Analysis on Behavior Rule of Rock Pressure of Fully-mechanized Working Face in Thin Coal Seam

通过对薄煤层10902综采工作面的矿压进行实测研究,分析了其矿压显现特征和煤壁前方支撑压力影响范围,结果表明:工作面初次来压步距为19.0 m,周期来压步距为6.87 m,来压期间动载系数为1.42,来压较为明显,超前支撑压力影响范围为18 m左右,回采巷道围岩变形量总体较小。

According to the actual measurement and study on rock pressure of 10902 fully-mechanized working face in thin coal seam, the characteristics of behavior of rock pressure and influence scope of abutment pressure in the front of coal wall were analyzed in this paper,the result indicates that：first weighting interval of the working face is 19.0 m, and periodic weighting length is 6.87 m, dynamic load coefficient is 1.42 during strata behaviors occur, and rock pressure is obvious, the influence range of advanced abutment support pressure is about 18 m, the deformation of surrounding rock in gateway is small on the whole.