边角煤柱区冲击与突出危险性预测技术

Prediction Technology of Rock Burst and Gas Outburst of Irregular Bound Coal Sections

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。

The Pingmei No.4 Mine Dingjiu panel edge angle coal pillar mining face as the research object, analyzes the basic situation of its reserves, and coal and rock burst tendency of experiment. Based on the prediction of coal and gas outburst and the coupling risk of coal pillar mining face, the threat level of B is D, C and A. Based on the prediction of gas emission rate, the amount of debris and the regional gas pressure in the face of the coal pillar, the prediction accuracy and reliability of the prediction results are verified.