大同煤田鹅Ⅳ精查勘探区煤层稳定性评价  

Evaluation of coal seam stability in E Ⅳ precise exploration area of Datong coalfield

作　　者：宋景 王璐 SONG Jing;WANG Lu(Shaanxi 194 Coalfield Geology Co.,Ltd.,Tongchuan 727000,China)

机构地区：[1]陕西省一九四煤田地质有限公司,陕西铜川727000

出　　处：《陕西煤炭》2020年第2期21-24,5,共5页Shaanxi Coal

摘　　要：大同煤田为一双纪煤田,下部为石炭—二叠纪含煤岩组,上部为侏罗系含煤岩组;鹅Ⅳ精查勘探区位于大同煤田中部东南边缘地带,主要以石炭—二叠纪煤组为目标层,该区煤层赋存层数多,受岩浆岩活动影响较大;在充分收集利用20世纪50年代以来施工的49个钻孔成果资料及最近几年施工的19个钻孔资料,利用《煤矿地质工作规定》中第十二条中煤层稳定性划分标准,通过数据统计运算分析,对区内各可采煤层稳定程度通过定性及定量评价进行研究分析对比,最终确定主要可采煤层的稳定程度。其中,山4、2、3、4(3-4)、5号煤层为较稳定煤层;8号煤层为稳定煤层。研究结果对勘探区煤层稳定程度评价具有重要意义。The lower part of Datong coalfield is Carboniferous Permian coal bearing formation,and the upper part is Jurassic coal bearing formation.The E Ⅳ intensive exploration area is located in the southeastern margin of the central Datong coalfield,mainly taking Carboniferous-Permian coal group as the target bed.There are many coal seams in this area,which are greatly influenced by magmatic activities.By collecting and utilizing the data of 49 boreholes constructed since 1950s and 19 boreholes constructed in recent years,according to the classification standard of coal seam stability in“coal mine geological work regulations”,through statistical analysis and qualitative and quantitative evaluation,the stability degree of each minable coal seam in the area was analyzed and compared,and finally the stability degree of main minable coal seams was determined.The research results are of great significance to the evaluation of coal seam stability in the exploration area.

关 键 词：鹅Ⅳ精查勘探区 煤层稳定性 定量与定性评价 

分 类 号：TD821[矿业工程—煤矿开采]