巷道负煤柱施工防冲技术应用

Application of Anti Burst Technology in Tunnel Construction with Negative Coal Pillar

兴安煤矿可采煤层都具有冲击倾向性,冲击地压灾害严重。根据煤层和工作面实际情况,从优化巷道布局入手,采用负煤柱施工工艺布置回风道,把二段回风道布置在一段顶分层下,使回风道处在免压区内,从根本上治理冲击地压,保证矿井接续平稳发展,达到高产、高效的目的。

All the main coal seams of Xing’an coal mine have the impact tendency and the rock burst is serious. Based on the actual situation of coal seam, and after constantly summing up, innovation, and analysis of the actual situation, the negative pillar construction technology is put forward to lay out the return air duct, namely, the secondary return air duct layout is under a top layer, in the pressure zone, free from the ground pressure, which ensures smooth development of mine succession, achieves the goal of high yield, high effciency,and realizes economic integration technology.