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顿巴斯矿区采深较大的各矿井尽管增加了采准巷道的维护费用,但其状态,特别是回采作业影响区内采准巷道的状态仍旧很差。因此,煤层的开采效益也在降低。对于与回采工作面毗邻的采准巷道,需要寻求最有效的护巷方法和设备。上述状况的主要影响因素是回采煤层所引起的急剧地质力学过程。 在具体条件下,采准巷道采用某种护巷工艺的合理性只能由其经济效益来决定。同时,还要考虑资源回收率,采深较大的矿井,资源回收率对作业的经济指标的影响也在增大。目前,各矿井都在实行完全经济核
Despite the increase in the cost of maintaining the quarry roadway, the mines of the larger mining area in the Donbas mine still have poor conditions, especially the quarrying of the roadway within the area affected by the mining operation. Therefore, the mining benefit of coal seam is also decreasing. The quarry alignment adjacent to the mining face needs to find the most effective lane protection methods and equipment. The main influencing factor of the above conditions is the drastic geomechanical process caused by the coal seam mining. Under specific conditions, the reasonableness of adopting a kind of roadway protection technology when selecting and approving the roadway can only be determined by its economic efficiency. At the same time, we must also consider the recovery rate of resources, mining larger mines, resource recovery rate of the operation of the economic indicators are also increasing. At present, all mines are implementing a complete economic nucleus