滞后支承压力研究在近距离煤层联合开采中的应用

Application of Research on Distributing Discipline of Abutment Pressure At Combined Mining Among Short Distance Coal Seams

葛店煤矿联合开采的煤层间距仅有2.1 m,下采面滞后上采面的距离选择至关重要。为减轻上采面的动力冲击和避免下采面的顺槽维护困难,通过理论计算和对下采面两顺槽的围岩应力实测,分析得到上下采面的合理错距,为联合开采的顺利进行奠定了基础。

The distance of the two combined mining coal seams is only 2. lm in Gedian Coal Mine. The distance selection of the nether delaying the upper is very, important. To lighten dynamic force of the upper and avoid maintenance difficult of roadway of the nether, through theory calculation and stress measure to roadway of the nether, the reasonable coal distance between the upper and nether coal seams is obtained. The base of trouble - free operation of combined mining is established.