摘要
针对耿村煤矿综放工作面煤层特厚和结构复杂的特点,通过对该矿12200工作面现场矿压观测,得出特厚复杂结构煤层综放工作面的矿压显现规律。结果表明:在4次周期来压中,平均来压步距10.5 m,来压影响范围平均为2.1 m;工作面周期来压的动载系数最大值平均为1.54,来压显现强烈。实测初撑力平均值为1 994.319 kN,支架初撑力普遍偏低,应提高支架初撑力。
The thickness of coal seam is very large on fully-mechanized top coal caving face in Gengcun Coal Mine, and the structure of the coal seam is complex. By means of field mine pressure measurement on 12200 working face in Gengcun Coal Mine,the strata behav- ior regularity of the face was obtained. It shows that the average weighting step is 10.5 m during the 4 times periodic weightings and the mine pressure will affect an average area of 2.1 m;the maximum average value of dynamic load coefficient is 1.54 during the periodic weighting. The average value of measured setting load is in generally low with 1 994. 319 kN. Therefore, the setting load of supports should be improved.
出处
《中州煤炭》
2013年第3期30-32,共3页
Zhongzhou Coal
关键词
综放工作面
工作阻力
矿压显现规律
周期来压
fully-mechanized top coal caving face
working resistance
strata behavior regularity
periodic weighting
