摘要
Abstract
Based on mine coal seam as an example, this paper adopts YTJ20 type of rock detecting recorder, in roadway surrounding rock drills, fissure distribution of different drilling depth detection, the detection results show that the immediate roof is broken, instability and damage of coal seam is relatively serious, range of broken coal seam in 1 m to 1.5 m or so, roof stability is good. Combining the occurrence condition of coal seam and the loose circle test results, carried out on the roadway, the supporting design, the two supporting scheme is designed. The numerical simulation method of the two supporting scheme simulation analysis, the reasonable supporting scheme is determined.关键词
松动圈/煤层/支护/数值模拟Key words
loose cirde/coal seam/support/numerical simulation分类
矿业与冶金
