晋城成庄煤矿3^#煤层含气量控制因素分析

Analysis on Control Factors of Gas Content in Seam 3 of Chengzhuang Coal Mine

为确定成庄煤矿3#煤层未知区域的含气量,结合区域构造演化特征,利用煤田地质资料和已采煤层实际瓦斯涌出量数据,定性、定量分析了煤层厚度、煤变质程度、煤层埋深、上覆基岩厚度、顶底板岩性、水文条件、地质构造等因素对含气量的控制作用,认为煤层上覆基岩厚度是3#煤层含气量分布的主控因素。然后建立相应的数学模型,编制了成庄煤矿3#煤层含气量等值线图,这对煤层气资源量计算、煤矿瓦斯安全管理具有重要现实意义。

In order to determine gas content accurately in Seam 3 of Chengzhuang Coal Mine, qualitative and quantitative analysis in terms of seam thickness, metamorphic grade, burial depth, roof and floor lithologic characters, hydrological conditions and geologic structure proves that the thickness of the overlying bedrock was considered to the main control action factors to gas content, based on coal geologic data and actual gas emission data integrating with region tectonic evolution characters. The isoline map has been worked out according to mathematic model established, which is of great significance to CBM reserves and gas-related safety management in coal mines.