韩城矿区煤与瓦斯突出主控因素及突出区预测

通过大量地质调查与瓦斯地质特征的研究表明,影响韩城矿区煤与瓦斯突出的主控地质因素为煤层瓦斯含量、煤体结构类型及地质构造应力。文章确定了瓦斯突出预测的定量指标及临界值;提出了等性块段叠加法的概念。通过划分瓦斯等性块段、煤体结构等性块段与构造应力等性块段,建立块段突出危险类型评定原则与方案。运用等性块段叠加法,圈定并预测了3号煤层突出危险区,为矿井合理开展突出防治工作提供了科学依据。 

Control factors of coal and gas outburst and regional prediction in Hancheng mining area, Shaanxi

Based on a series of geologic investigation and research on gas-geologic features,main geologic controlling factors influencing coal and gas outburst in Hancheng mining area are considered as gas content of coal-bed,structural fractured types of coal-body and sress of geological structures.The quantitative index and its critical value of predicting outbursts are established.The idea of the stacked method which based on same-geological conditions block are put forward.Through dividing the coal-bed into blocks with same-geological condition including gas content,coal-body structural type and geological structure stress,setting up the principle and scheme evaluated on the types of outburst danger,applying the stacked method which based on same-geological conditions blocks,the range of the outburst danger types of No.3 coalbed are predicted.It provides scientific basis for rational preventing and controlling gas-outbursts.