沂源煤田鲁村井田山西组层位的发现及其地质意义

Founding and Geological Significance of Shanxi Formation in Lucun Coal Mine in Yiyuan County

通过采用地面物探、钻探和井下巷探、钻探相结合的综合勘探方法,对鲁村井田深部进行了补充勘探,并对井田以往地质资料进行了重新对比分析,发现该井田-400～-1 300 m的埋深范围内不但存在以往认为已被剥蚀缺失的太原组上部地层,还保存了较完整的山西组,尤其是在该段地层中新发现了5个局部可采煤层,为井田增加了资源储量、延长了服务年限。填补了沂源煤田太原组上部和山西组含煤地层资料的空白。

By using integrated exploration methods,such as surface geophysical exploration method,drilling and underground exploration Lane method,and the combination of exploration and drilling method,supplemented exploration was carried out in deep part of Lucun coal well,and the former geological information of this coal well were contrasted and analyzed.It is found that within the scope of-400～-1300m in this well,It not only existed the upper part of Taiyuan formation which was regarded eroded and missed in the past,but also preserved complete Shanxi formation.In the newly discovered strata,five regional coal layers have been found.It will increase the reserves of coal mine,extended service life of coal wells,and fill the information gaps of the upper part of Taiyuan formation and coal-bearing strata in Shanxi formation.