崔庙煤矿煤层气富集的地质控制与抽采模式

Geological Control of CBM Abundance and Discharge Mode in Cuimiao Colliery

崔庙煤矿为煤与瓦斯严重突出矿井,为了更好指导该区的煤层气开发及井下瓦斯灾害治理,以煤田勘探、井下瓦斯测定资料为基础,对该区煤层气的资源赋存状况与地质控制因素进行了分析,并指出了煤层气开发技术的优势方向。研究结果表明:二1煤层瓦斯含量5.59～35.25m3/t,煤层含气量平面分布由西向东逐渐增大,随煤层埋深增加而增高,地质构造与煤层埋深是控制该区煤层含气量的关键因素。受煤体结构的关键条件制约,本区不具备煤层气地面开发的优势,煤层气资源的有效开发利用应以井下瓦斯抽采为主。

Cuimiao Colliery is a mine where coal and methane burst is very serious.In order to instruct CBM drainage and methane disaster prevention,this paper analyzed CBM resource occurrence status and geological control factors of CBM in this area and indicated development tendency of CBM development technology on the basis of coalfield exploration and methane survey data.Results showed that methane content of 21 coal-seam was between 5.59~35.25m3/t.Methane content of the coal-seam rose from west to east in plane and rose with buried depth of coal-seam increasing.Geological tectonic and buried depth were 2 key factors of controlling methane content.Restricted by coal-body structure,this area lacked exploring CBM condition on surface,so the development and utilization of CBM should be made by underground drainage.