淮北涡阳矿区花沟西井田岩浆侵入及其对煤层的影响

Magmatic Intrusion and Its Impact on Coal Seams in Huagouxi Minefield, Guoyang Mining Area, Huaibei

利用煤田地质勘查成果,研究了淮北煤田涡阳矿区花沟西井田岩浆活动特征及其对煤层的影响。花沟西井田岩浆侵入活动主要为中性深成侵入,岩浆侵入至煤系后,具有显著地选择层位和顺层侵入的特点。岩浆侵入活动对井田范围内煤层尤其是主要可采煤层82煤影响显著,不仅表现在对煤层的吞蚀和挤压造成的煤厚变化,同时因岩浆穿插于煤层之中造成煤层结构的复杂化,降低煤层的质量。

Using coal geological exploration results studied magmatic activity features and impacts on coal seams in Huagouxi mine-field, Guoyang mining area, Huaibei coalfield. The magmatic intrusion in Huagouxi minefield was mainly a intermediate magma pluton-ic intrusion, after magma intruded into coal measures presented obviouly horizon selection and bedding intrusion characteristics. Mag-matic intrusion significantly impacted coal seams in the minefield, especially on coal No.82.The impacts not only found expressions oncoal seam corroding and extrusion caused coal thickness variation, but also coal seam structure complicated because of magma insertedinto coal seams, thus lowering down coal seam quality.