永安煤矿煤柱中巷支护技术模拟实验研究

Experimental Study on the Technique of Supporting and Support in the Coal Pillar of Yong’an Coal Mine

根据永安煤矿煤层地质情况,通过支护模拟实验研究该矿井2号煤层的工作面开采情况,观测工作面之间煤柱的应力变化及变形破坏特征,待煤柱应力稳定后,模拟煤层开采现场巷道掘进支护,观测煤柱应力变化、变形破坏特征及矿压显现规律,并确定合理的支护方式及其参数。

According to the geological conditions of the coal seam in Yongan Coal Mine,the mining situation of the working face of the No.2 coal seam of the mine is studied through the support simulation experiment,the stress change and the deformation failure characteristic of the coal pillar between the working faces are observed,and after the stress of the coal pillar is stable.The excavation and support of the coal seam is simulated,the stress change of the coal pillar,the characteristics of the deformation and the appearance of the mine pressure are observed,and the reasonable support method and its parameters are determined.