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在高应力作用下,复合岩层中的巷道极易发生变形,致使巷道处于不稳定状态,给矿井生产造成很大的经济损失并埋下安全隐患。长春羊草煤业股份有限公司二矿在投产后,主要集中运输大巷一直受此问题困扰。虽然采用过很多种支护方式,包括U型钢支护、锚喷支护等,但每次都不消半年,巷道就会出现变形,超过一年则严重变形。在与巷道变形的持续博弈中,也慢慢总结出了一些经验。经过
Under the action of high stress, the roadway in the compound rock can be easily deformed, resulting in the unstable roadway, causing great economic losses to the mine production and laying a potential safety hazard. After the commencement of production of the No. 2 Mine of Changchun Leak Grass Coal Industry Co., Ltd., it has been plagued by this problem that the main transportation lane has been concentrated. Although many kinds of support methods have been adopted, including U-shaped steel support, anchor and shotcrete support, etc., the roadway will be deformed for more than half a year and the deformation will be severely deformed over a year. In the continuous game with the deformation of the roadway, but also slowly summed up some experience. after