河南义马煤田逆冲推覆构造特征及其控煤作用  

Features of thrust nappe structure and its coal-controlling effect in Yima coalfield in Henan

作　　者：周晓刚[1,2] 朱炎铭[1,2] 姚能旺[1,2] 胡璐宇 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏省徐州市221116 [2]中国矿业大学煤层气资源与成藏过程教育部重点实验室,江苏省徐州市221116

出　　处：《中国煤炭》2014年第12期31-34,52,共5页China Coal

摘　　要：以义马煤田区域地质背景分析为依据,通过研究煤田构造的发育规律,探讨了以F16逆断层为主体的逆冲推覆构造的几何学、运动学和动力学特征。结果表明义马煤田内逆冲推覆构造的走向大致与褶皱轴走向平行,呈近EW向,其以前展式自南向北逆冲;燕山运动Ⅳ-Ⅴ幕,扬子古板块与华北板块碰撞相互挤压是该推覆构造形成的主要驱动力。受到褶皱和逆冲断裂等构造的影响,义马煤田南部的煤层埋深较大,且产状发生较大的改变。Based on the analysis of the regional geological background in Yima coalfield,this paper discusses the geometrical,kinematic and dynamic features of the thrust nappe structure taking F16 reverse fault as the dominant part,through researching the developing law of the coalfield structure. The result shows that the trend of the nappe structure is approximately paral-lel with folding shaft in Yima coalfield,trending E-W direction;the nappe structure thrusts from south to north;the intensive compression between Yangtze plate and North China plate of Yans-han movement Ⅳ-Ⅴ curtain is the main power to form this nappe structure. Besides,influenced by folds and nappe faults,the burial depth of coal seam is large and the occurrence of it is seri-ously changed in the south of Yima coalfield.

关 键 词：逆冲推覆构造 构造特征 控煤作用 义马煤田 

分 类 号：P618.11[天文地球—矿床学]