下峪口井田煤与瓦斯突出瓦斯地质分析

Analysis of Gas Geology of Coal and Gas Outburst in Xiayukou Coal Filed

根据以往资料和实验测试结果,研究了下峪口井田煤与瓦斯突出的分布特征,采用定量的方法对煤与瓦斯突出的控制因素进行了分析,并确定了突出危险性预测指标及临界值。研究认为:本区突出点分布有明显的分区分带特点,影响煤与瓦斯突出的主要因素为褶皱构造、煤层埋深、煤体结构类型、瓦斯含量与瓦斯压力。瓦斯含量与瓦斯压力是突出产生的基础,褶皱构造、煤体结构类型与埋深是产生突出区域分布的主控因素。

Based on previous data and experimental results,the coal and gas outburst distribution characteristics and influence factors in Xiayukou coal filed are discussed by using quantitative analysis method,and the outburst prediction index and critical value are determined.The study shows that distribution of coal and gas outburst point have a clear zoning characteristics,and the main factors affecting the coal and gas outburst is fold,burial depth,coal structure,gas content and gas pressure.Gas content and gas pressure are the basis of outburst,folds,coal structure and burial depth are main control factors of the coal and gas outburst regional distribution.