山西阳城大桥煤矿15号煤层地质特征及开发利用前景研究

Study on geological characteristics and development and utilization prospect of Coal Seam 15 in Yangcheng Daqiao Coal Mine,Shanxi Province

大桥煤矿位于阳城县北留镇大桥村西北侧,目前正在开采3号和9号煤层,15号煤层是其下一步开采的重要矿体。通过分析15号煤层的地质构造、煤层、煤岩、煤质以及开采地质条件发现,15号煤层顶、底板裂隙不发育,地层产状简单,是全区较稳定可采煤层,属无烟煤二号,预测15号煤层矿井正常涌水量约为21.78 m^(3)/h,井田内奥灰水位标高为+472.00~+473.00 m,奥灰水由北东流向南西。15号煤层底板标高为+480.00~+530.00 m,该煤层为不带压开采煤层,工程地质及其他开采地质条件为中等型;15号煤层煤炭资源储量丰富,为949万t,交通便利,其开采对提高人们的生活水平、稳定就业形势、实现乡村振兴等方面具有积极作用。

Daqiao Coal Mine is located in the northwest of Daqiao Village,Beiliu Town,Yangcheng County.Currently,it is mining Coal Seams 3 and 9,and Coal Seam 15 is an important ore body for its next mining.Based on the analysis of the geological structure,coal seam,coal rock,coal quality and mining geological conditions of Coal Seam 15,it is found that the roof and floor fractures of Coal Seam 15 are not developed,and the stratum occurrence is simple.It is a relatively stable and minable coal seam in the entire area,belonging to Anthracite No.2.It is predicted that the normal water inflow of Coal Seam 15 is about 21.78 m3/h,the elevation of the Austrian limestone water level in the mine field is+472.00~+473.00 m,the Austrian limestone water flows from northeast to southwest,and the elevation of the floor of Coal Seam 15 is+480.00~+530.00 m,Coal seam 15 in the mine field is mined without pressure,and the engineering geological and other mining geological conditions are of medium type;Coal Seam 15 is rich in coal resources,with a reserve of 9.49 million tons and convenient transportation.Its mining plays a positive role in improving people’s living standards,stabilizing the employment situation,and achieving rural revitalization.