平庆煤矿煤与瓦斯突出预测敏感指标临界值的确定
Critical Value Determination of Sensitivity Index for Forecasting Coal and Gas Outburst in Pingqing Mine
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摘要: 针对平庆煤矿C7+8煤层现用煤与瓦斯突出预测敏感指标临界值与真实临界值不符，导致局部防突措施工程量增大和掘进速度降低，采用历史预测资料统计与分析、实验室研究和现场考察分析相结合的方法，研究确定了C7+8煤层突出主要预测指标K1值为0.6 mL(g·min1/2)、预测参考指标S值为14 kg/m，通过2个阶段的试验表明，所确定的敏感指标临界值满足矿井安全高效生产要求，能够有效解放生产力和提高经济效益。Abstract: According to the problem that critical value of gas outburst prediction sensitive index of C7+8coal seam in Pingqing Coal Mine is inconsistent with the real critical value and leads to local outburst prevention measures of engineering quantity increase and driving speed decrease, by historical prediction analysis, data statistics and analysis, laboratory research and field investigation method, the research identified that the main outburst prediction value of K1 in C7+8 coal seam is 0.6 mL(g·min1/2), the prediction value of the reference index S value is 14 kg/m. Through the test of two stages that sensitive index critical value determined by the mine safety and efficient production meets production requirements, which can effectively liberate productivity and improve economic returns.
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Keywords:
- Pingqing Mine /
- coal and gas outburst /
- outburst prediction /
- sensitive index /
- critical value
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