煤矿应力集中区顶板控制和支护技术的研究

Study on roof control and support technology in coal mine area of stress concentration

山西某煤矿井深707m,矿井开采深度大、应力集中,巷道地压随开采深度梯度增加,且我矿开采煤层为特软煤层,巷道围岩承载能力差,巷道丁字口、十字头、叠加处等会出现应力集中,这些应力集中区矿压显现严重、破坏力大,为此,深部地压应力集中区巷道顶板控制和支护技术的研究应用亟待解决。

a coal mine in Shanxi Province depth of 707 meters, the mine mining depth, stress concentration, roadways pressure gradient increases with the increase of mining depth, mining coal seam in soft coal seam, and I mine roadway surrounding rock bearing capacity is poor,roadway tee, cross, superimposed later appear stress concentration, the stress of mine pressure appear serious and destructive power is big,therefore, the deep roadway roof pressure stress, high control and supporting technology research applications need to be addressed.