岩浆侵入破坏区煤层瓦斯地质规律  

Geological Regularity of Coalbed Gas in Magmatic Intrusion Area

作　　者：安鸿涛[1] 康彦华 孙四清[1] 

机构地区：[1]煤炭科学研究总院西安研究院,陕西西安710054 [2]神华宁夏煤业集团能源工程公司环境安全工程分公司,宁夏石嘴山753000

出　　处：《矿业安全与环保》2010年第5期52-54,58,共4页Mining Safety & Environmental Protection

基　　金：国家自然科学基金项目(50534070)

摘　　要：当岩浆侵入破坏煤系时,煤层瓦斯赋存规律会变得异常复杂。利用瓦斯地质学和煤层气地质学的方法,对岩浆侵入破坏区煤层瓦斯地质规律进行了研究,结果表明:岩浆侵入煤层与煤发生接触热变质作用,使生成的瓦斯量发生变化;使瓦斯的赋存状态发生变化,同时有可能导致瓦斯成分的改变;还会使其影响带的煤体结构遭到破坏,局部形成构造软煤分层,在岩浆岩体尖灭处及岩浆岩体与断层的组合部位是煤与瓦斯突出的有利地带。When the magmatic intrusion destructed the coal seam,the occurrence rule of coalbed gas would become exceptionally complicated. By using the method of gas geology and coalbed gas geology,study was carried out on the gas geological rule in the magmatic intrusion and damage areas of the coal seam. The results showed that the magmatic intrusion into coal seam might cause the contact thermal metamorphism of coal and the change of the generated gas quantity; it might cause the change of gas occurrence state and gas compositions; it might also destruct the coal body structure in its affected area,cause part of a coal seam to form a structural soft slice; the places such as the thinning out place of structural coal and magmatic rock and the joint location of magmatic rock and fault group were the favorable zone of coal and gas outburst.

关 键 词：岩浆侵入 接触热变质 瓦斯地质 煤与瓦斯突出 

分 类 号：TD712[矿业工程—矿井通风与安全]