煤矿附近村庄地表瓦斯泄露来源及原因分析

Analysis of Sources and Causes of Surface Gas Leakage in One Village near Coal Mine

某村庄地面出现瓦斯泄露现象,由于该村庄附近有生产煤矿,地表泄露的瓦斯有来自于开采煤层的可能性,为确认瓦斯来源,分析瓦斯泄漏原因以便采取有效措施,进行了地面泄漏气体与井下采空区瓦斯气体相关性取样实验及煤矿开采对地下水影响的分析,结果表明:地面泄漏瓦斯来源不是附近煤矿井下煤层瓦斯,但由于煤矿常年开采及该矿修建南风井时大量浅层水被疏排,导致了该区域水位下降,致使浅层瓦斯气体泄漏到地面。可为类似条件地表瓦斯泄漏原因分析提供参考。

Gas leakage appeared on the surface of a village. Due to production coal mines are near the village,it is possible that the gas comes from the mining coal seam. In order to confirm the gas source,analyze the causes of gas leakage,so as to take effective measures,sampling experiment of correlation between surface leakage gas and underground goaf gas and analysis of influence of coal mining on groundwater are carried out. The results show that the source of surface leakage gas is not coal seam gas of coal mine. However,due to the perennial mining of the coal mine and the drainage of a large number of shallow water during the construction of the south air shaft in the mine,the water level in the region has been lowered,resulting in the leakage of shallow gas to the ground. It can provide reference for the cause analysis of surface gas leakage under similar conditions.