全煤开拓大巷联合支护技术研究

Research on Combined Supporting Technology in Development Coal Roadway

赵固一矿开拓大巷布置在煤层中,巷道具有应力高、顶底板岩性差、服务时间长、断面大等特点。介绍了该矿采用的高强锚网索一次支护、长环形支架二次支护以及壁后注浆的联合支护技术。测试结果表明,该联合支护方式成功保证了全煤开拓大巷的稳定,具有一定的参考和推广价值。

The development roadway in Zhaogu No. 1 Mine is in the coal roadway which has some characteristics such as high stress, poor lithology of roof and floor,a long time service,large cross-section. This paper introduced a combined supporting technology,including first supporting, high-strength bolt-net-cable supporting, second supporting, long ring support and grouting behind support. Test results show that the combined supporting ensures the entire stability of the development coal roadway, and it is worthy of being popularized.