马 曙罗 勇韩真理龙祖根李晓华

(1.贵州省矿山安全科学研究院,贵州省贵阳市,550025; 2.贵州省煤矿瓦斯防治工程技术研究中心,贵州省贵阳市,550025)



贵州煤矿瓦斯地面抽采现状及抽采方式分析∗

马 曙1,2罗 勇1,2韩真理1,2龙祖根1,2李晓华1,2

(1.贵州省矿山安全科学研究院,贵州省贵阳市,550025; 2.贵州省煤矿瓦斯防治工程技术研究中心,贵州省贵阳市,550025)

摘 要对贵州煤矿瓦斯抽采利用现状和抽采技术现状进行了总结,针对贵州煤层瓦斯赋存地质条件“一弱、两多、三高、四大”的特点,分析了煤矿瓦斯地面抽采技术难点,结合井下和地面瓦斯抽采技术的应用现状,探讨贵州煤矿瓦斯地面合理的抽采方式。

关键词贵州 煤矿瓦斯 地面抽采 技术难点 抽采方式

The analysis of the situations and patterns of ground gas drainage of coal mine in Guizhou of China

Ma Shu1,2,Luo Yong1,2,Han Zhenli1,2,Long Zugen1,2,Li Xiaohua1,2
(1.Research Institute of Mine Safety Science of Guizhou Province,Guiyang,Guizhou 550025,China; 2.Guizhou Provincial Engineering Research Centre for Coal Gas Control,Guiyang,Guizhou 550025,China;)

Abstract The situations of the technique and utilization of gas drainage of coal mine in Guizhou were summarized,aiming at the chacteristics of geological conditions of coal seam gas,which is＂one weaker,two more,three higher and four greater＂,the technique difficulties of ground gas drainage in coal mine were analyzed,combining with the situations of application of gas drainage technique of ground and underground,the reasonable patterns of ground gas drainage of coal mine in Guzhou were discussed.

Key words Guizhou,coal mine gas,ground gas drainage,technique difficulty,gas drainage pattern

1　贵州煤矿瓦斯资源概况

贵州有极为突出的煤炭和煤层气资源优势,煤炭探明储量居全国第五位,煤层气储量居全国第二位,煤炭和煤层气资源都位列我国南方各省份之首.根据贵州最新一轮的煤层气资源评价,全省上二叠系煤层气推测资源量3.06万亿m3,平均资源丰度1.12亿m3/km2,高于全国煤层气平均资源丰度的0.98亿m3/km2,主要集中在六盘水、织纳、黔北3个煤田,共2.83万亿m3,占全省煤层气地质资源总量的92.57％.其中,以六盘水煤田最高,为1.39万亿m3,占全省地质总资源量的45.42％,平均资源丰度2.26亿m3/km2;织纳煤田次之,地质资源量为0.70万亿m3,占全省地质总资源量的22.88％,平均资源丰度1.41亿m3/ km2.我国目前的两大煤层气产业基地沁水盆地煤层气资源储量6.85万亿m3,平均资源丰度……