永夏煤田顺和井田岩浆岩侵入对煤层煤质的影响

Impact of Magmatic Intrusion to Coal Seam and Coal Quality in Shunhe Minefield,Yongxia Coalfield

顺和井田华力西期和燕山早、晚期岩浆活动较为强烈,勘查资料表明,岩浆岩多以岩床形式侵入煤层的顶底板及煤层中间,对煤层的赋存形态、煤层结构、煤质等都产生了一定的破坏作用。变质作用以接触变质为主,接触变质带内煤类较复杂,可划分为岩焦混杂带、天然焦带、焦化煤带、正常煤带四种类型。

Magmatic activities during Variscan, early and late Yanshanian stages in the Shunhe minefield area were rather strong. Mainly in the form of sill intruded into coal seam, roof and floor made certain destruction to coal seam hosting configuration, texture of coal seam and coal quality. Mainly contact metamorphism, coal ranks in the contact metamorphic zone are rather complicated.