大同煤田马脊梁井田煌斑岩赋存特征及对煤层煤质的影响

Study on Lamprophyre Hosting Features and Its Impact on Coal Seam and Coal Quality in Majiliang Coalmine,Datong Coalfield

大同煤田马脊梁矿C-P煤系中赋存着大量的岩浆侵入体,对于矿井安全高效生产造成了极大的影响。通过对钻孔、样品测试数据的分析,寻找到马脊梁井田煌斑岩侵入赋存特征及规律,获得如下认识:变质煤的分布范围与煌斑岩的侵入范围基本一致。因煌斑岩侵入造成原煤的灰分、浮煤挥发分、原煤发热量等化学成分及物理特征发生变化。

Numerous igneous rocks have been intruded into the Permo-Carboniferous coal measures in the Majiliang coalmine,Datong coalfield have greatly impacted coalmine security and high efficiency production.Through analysis of boreholes and sample tested data,have learned the lamprophyre intrusion hosting features and pattern.As a result,we have found that the distribution range of metamorphous coal is basically consistent with lamprophyre intrusion range.The intrusion has caused variation of chemical composition and physical features,such as raw coal ash content,float coal volatile matter content and raw coal calorific value etc.