地应力测量在煤与瓦斯突出灾害研究中的应用

The application of in-situ stress measurement to the study of coal and gas outburst in coal mines

为减轻和防治煤与瓦斯突出灾害,对红菱煤矿进行了地应力测量、岩石力学参数测试和瓦斯气体压力量测,以及地质构造分析。在此基础上,应用突出破坏判断准则,提出了煤层稳定性评价的定量指标,从区域上预测了煤与瓦斯突出的潜在危险区,与现场实际情况吻合较好。提出了区域性与局部相结合的防突措施,取得了良好效果,表明区域煤与瓦斯突出潜在危险区预测对区域性防突措施的选择具有一定指导意义。

For the purpose of reduction and prevention of coal and gas outburst disaster,the authors conducted measurement of in-situ stress and mechanical parameters of rocks,and studied geological structure and gas pressure.On such a basis,criteria were established for appropriate quantitative evaluation of the stability.The dangerous areas of coal and gas outburst were predicted regionally,and the results are consistent well with the insitu situation.The regional and local prevention measures were put forward,which have been proved to be effective.All this suggests that the prediction of regional dangerous areas is important for the selection of prevention measures.