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以平煤四矿丁九采区边角煤柱采面为研究对象,分析了其储量等基本情况,并进行了煤岩体冲击倾向性实验。通过边角煤柱采面冲击地压、煤与瓦斯突出及二者耦合危险性区域预测,危险等级预测B区威胁最大,依次为D、C、A区。通过测定边角煤柱采面瓦斯涌出初速度、钻屑量和区域瓦斯压力进行预测,验证了区域预测结果正确性和可靠性。
Based on the mining face of coal pillar at the corner of Dingjiu mining area in Pingdingshan No.4 coal mine, the basic conditions of its reserves and so on were analyzed and the impact propensity tests of coal and rock mass were carried out. According to the prediction of coal seam gas burst and coal and gas outburst and the coupling risk between the two sides, the danger level is the most threatening in B area, which is D, C, A area. The correctness and reliability of the regional prediction results are verified by measuring the initial gas velocity, the amount of cuttings and the gas pressure in the coalface at the corner coal pillar.