地温异常与岩浆岩协同作用下煤变质程度研究  

Study on coal metamorphic degree under the synergistic effect of geothermal anomaly and magmatic rock

作　　者：王麒[1] 董正乐[2] 张波 张平卿[2] 侯泉林 王心义[5] 

机构地区：[1]华北水利水电大学资源与环境学院,河南省郑州市450046 [2]平顶山天安煤业股份有限公司,河南省平顶山市467000 [3]中国平煤神马集团能源化工研究院,河南省平顶山市467000 [4]中国科学院大学地球科学学院,北京市石景山区100049 [5]河南理工大学资源环境学院,河南省焦作市454000

出　　处：《中国煤炭》2017年第12期50-54,共5页China Coal

基　　金：国家自然科学基金(41672240);河南省高校科技创新团队支持计划(15IRTSTHN027);华北水利水电大学博士基金

摘　　要：基于在平顶山煤田提取的40个煤样和45组地温梯度数据以及岩浆岩侵入体分布情况,分析了煤变质程度的空间分布特征,研究了岩浆岩侵入和地温梯度对煤变质程度的控制作用。研究结果表明:平顶山煤田内同一矿井,下组煤变质程度高于上组煤;存在岩浆岩侵入体的十三矿二组煤的变质程度最高,燕山晚期岩浆岩侵入是控制煤田煤变质程度的关键因素;地温越高、地温梯度越大,煤的变质程度越高,地温场变化对煤变质程度有重要的影响。Based upon the 40 coal samples, 45 geothermal gradient data and the distribution of magmatic intrusions in Pingdingshan coal field, the distribution law of coal metamorphic degree was analyzed and the controlling effect of magmatic intrusion and geothermal gradient on the coal metamorphic degree was studied. The research results showed that in the same coal mine of Pingdingsban coal field, the metamorphic degree of lower coal group was higher than that of upper coal group; in No. 13 Mine, the metamorphic degree of the second coal group with magmatic intrusions was the highest, and magmatic intrusions of late Yanshanian was the key controlling factor of coal metamorphic degree; the coal metamorphic degree increased with the increasing of geotherm and the geothermal gradient, and the change of geothermal field had an important effect on the coal metamorphic degree.

关 键 词：煤变质程度 镜质组反射率 岩浆岩侵入体 地温梯度 

分 类 号：P618.11[天文地球—矿床学]