山东省黄河北煤田煤层分布规律及防治水建议

黄河北煤田是山东省仅存的没有全面开采的煤田。该煤田主要可采煤层位于太原组,主采13煤层位于太原组底部,距离徐灰和奥灰较近,开采时受底鼓水威胁。该文通过收集大量的各勘查区不同勘查阶段的地质资料,并进行了充分的分析、归纳和总结,找出了黄河北煤田具有"东多西少"、"上薄下厚"的赋煤规律和徐灰、奥灰含水层厚度大、富水性强、具有较高的静水压力等特点。通过充水因素分析结合其他煤田的开采经验,对开采11、13煤层,提出了注浆改造奥灰顶部30 m的工作思路和建议。

Distribution Law of Coal Strata and Suggestion for Water Control in Huanghebei Coalfield in Shandong Province

Huanghebei coalfield is the only one which has not been mined comprehensively in Shandong province. The main workable coal seam is located in Taiyuan formation. Its main mining coal seam is No.13 coal seam at the bottom of Taiyuan group. It is near to Xujiazhuang limestone and Ordovician limestone. The coal mining will be threatened by floor heave water. In this paper, by collecting a large number of geological data in different exploration stages in different exploration areas, on the basis of full analysis, induction and summary, coal production regularity and aquifer water enrichment characteristics of Huanghebei coalfield have been found. Through analysis on water filling factors, combining with other coal mining experiences, in order to explore No.11 and No.13 coal seam, work ideas and suggestions for grouting and reconstructing the upper part of Ordovician limestone in the depth of 30m have been put forward.