保安煤矿15号煤层瓦斯地质规律分析

Analysis on Gas Geological Law of No.15 Seam in Bao'an Mine

为减少保安煤矿15号煤层的瓦斯灾害,基于该煤层的瓦斯参数测定、矿井生产资料和实测的瓦斯含量,对本煤层瓦斯在褶曲、断层、陷落柱等地质构造区域的赋存特征进行了综合分析,结果表明:本煤层瓦斯含量整体上随埋藏深度增加而增加,呈北高南低的趋势;局部地质构造影响下的煤层瓦斯含量分布具有不均衡性,向斜部大于背斜部,正断层附近地区煤层瓦斯含量比同一标高正常区低,逆断层附近地区煤层瓦斯含量比同一标高的正常区高,陷落柱周围瓦斯含量比同一标高正常区低。

In order to reduce the gas disasters of No.15 seam in Bao＇an Mine,based on the gas parameters measured from the seam,mine production information and site measured gas contents,a comprehensive analysis was conducted on the gas deposit features of the seam gas in the folds,faults,sink hole and other geological structural area.The result showed that the gas content of the seam would be generally increased with the depth increased in strike.And the gas content was in the tendency that from high in north to low in south.The gas content distribution in part of the seam was imbalance with the influence of geological structure.The synclinal part would be larger than the anticline part.The seam gas content near the normal slip fault would be lower than the normal area at the same elevation,the seam gas content near the reversed fault would be higher than the normal area at the same elevation and the gas content around the sink holes would be lower than the normal area at the same elevation.