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为解决某煤矿103工作面煤巷掘进时巷道的支护问题,采用FLAC数值模拟计算的方法,研究了巷道支护时锚杆间排距、锚杆长度和锚索长度对巷道位移量的影响,研究结果表明:根据巷道条件不同应选取不同的锚杆间排距和锚杆长度,对不同巷道顶板岩性的分析,选取了锚索长度的下限,使得巷道位移量的控制更为科学,支护状况得到了显著改善。
In order to solve the problem of roadway support in coal face excavation in a face of a coal mine, FLAC numerical simulation method was used to study the effect of bolt spacing, length of anchor rod and cable length on roadway displacement The results show that different row spacing and anchor length should be chosen according to the different conditions of the roadway. Based on the analysis of the rock roof of different roadway, the lower limit of the length of the anchor cable is selected, which makes the control of the displacement of the roadway more scientific. Support status has been significantly improved.