色连二矿12309工作面顺槽煤柱稳定性实测研究

Study on Stability of Coal Pillar Stability of 12309 Working Face in Selian No.2 Coal Mine

针对色连二矿12309工作面回采过程中,12309辅运顺槽将受到12309工作面采动超前支承压力和侧向残余支承压力的双重影响,特别在工作面回采动压影响期间,使12309辅运顺槽长期处于复杂应力环境中,预留的20 m顺槽煤柱将承载较大的应力。为了掌握一面三巷布置的3-1煤层辅运顺槽受工作面采动影响时的矿压显现规律,研究色连二矿3-1煤层12309工作面采动影响时顺槽煤柱的稳定性及分析煤柱宽度的合理性,开展了顺槽煤柱应力在线实测研究。

In the process of 12309 working face recovery in Selian 2 mine,the 12309 auxiliary chute will be affected by the double bearing of the 12309 working face and the residual bearing pressure. In particular,during the influence of the dynamic pressure of the working face,12309 auxiliary chute in the complex stress environment,the reserved 20 m chute pillar will carry a large stress. In order to grasp the law of the occurrence of the strata during the influence of the mining face of the auxiliary seam in the side of the 3-1 ,and to study the stability of the coal pillar in the coal seam 12309 and the rationality of the coal pillar width was analyzed.