华蓥山煤田龙门峡井田开采水文地质条件分析  

Mining Hydrogeological Condition Analysis in Longmenxia Minefield, Huayingshan Coalfield

作　　者：陈照雄 

机构地区：[1]四川煤田地质局一三七队,四川达州635006

出　　处：《中国煤炭地质》2009年第A02期54-56,共3页Coal Geology of China

摘　　要：龙门峡井田含煤地层为二叠系上统龙潭组,开采K1煤层,-200m水平以上共获得资源量8 000多万t。在分析井田主要含水层富水性的基础上,认为对煤层开采系统产生充水影响的主要水源为顶板龙潭组灰岩水和底板茅口组灰岩水,长兴组灰岩水仅在断裂、岩溶塌陷等条件下对煤层系统产生间接充水。用大井法预算南矿300m水平涌水量为6 609t/d,北矿50m水平涌水量为5 084t/d。计算底板茅口组灰岩的突水系数为0.36～2.28MPa/m,存在严重底鼓突水威胁,据此提出了开采K1煤层的顶、底板防突水措施。The coal-bearing strata of the Longmenxia minefield belong to the Longtan Formation, Upper Series, Permian System. The minefield possesses 80 million more tons of coal resources above -200m level. Based on the main minefield aquifer water yield property analysis, considered that the main water filling resources to coal mining system are coal roof Longtan Formation limestone water and coal floor Maokou Formation limestone water, while the Changxing Formation limestone water only indirectly filling the coal mining system through faults and karstic collapses. Estimated south mine ＋300m level mine inflow is 6609t/d, north mine ＋50m level mine inflow 5084t/d through the virtual large diameter well method. Estimated coal floor Maokou Formation limestone water bursting coefficient is 0.36-2.28 MPa/m, thus serious floor heave water bursting threatening existed, for reasons giving, roof and floor water bursting prevention measures put forward during the mining of K1 coal seam.

关 键 词：充水含水层 充水因素分析 涌水量预算 防治水措施 K1煤层 华蓥山煤田龙门峡井田 

分 类 号：P641.461[天文地球—地质矿产勘探]