山西柳林兴无-金家庄煤矿下组煤层瓦斯地质特征  

Gas Geological Features of Lower Group Coal Seams in Xingwu and Jinjiazhuang Coalmines,Liulin,Shanxi

作　　者：李永军 石彦强 史伟杰 杨利芳 

机构地区：[1]中煤地质工程总公司,北京100073 [2]山西省煤炭地质局114勘查院,山西长治046011

出　　处：《中国煤炭地质》2013年第8期24-31,45,共9页Coal Geology of China

摘　　要：通过对兴无-金家庄煤矿下组煤层瓦斯赋存条件及煤储层特征分析，综合区域资料及上组煤层开采情况，对矿井下组煤瓦斯突出危险性进行了初步评价。本区下组煤层瓦斯CH。含量为0．05-4．63mL／g，平均1．48mL／g，CH。浓度在1．42％-96．63％，CO2浓度0．51％-64．01％，N：浓度存O．08％-68．20％，总体以深部CH。含量较高；煤的坚固性系数均大于0．3，瓦斯压力均小于0．74MPa，其它指标虽部分处于临界值范同，但综合评价本区下组煤层的突出综合指标不超标，突出危险胜小。Through analyses of gas hosting condition and coal reservoir features in the Xingwu and Jinjiazhuang coalmines, integrated regional data and mining situation of upper group coal seams, pre]iminarily assessed gas outburst hazard of lower group coal seams. The CH4 content in lower group coals is 0.05-4.63ml/g, average 1.48ml/g, concentration of CH4 1.42%N96.63%, C020.51%-64.01%, N2 0.08%-68.20%, as a whole, CH4content is higher in the deep part; the coal Protodyakonov coefficients are all larger than 0.3, gas pres- sures all less than 0.74MPa, other indices partly at the critical value range, but the comprehensive assessment of lower group coal seams gas outburst overall index does not exceed the standard, thus small outburst hazard.

关 键 词：下组煤层 瓦斯赋存条件 煤储层特征 瓦斯突出指标 兴无-金家庄煤矿 

分 类 号：TD712[矿业工程—矿井通风与安全]