Structure and coalbed methane occurrence in tectonically deformed coals

作     者：HOU QuanLin LI HuiJun FAN JunJia JU YiWen WANG TianKai LI XiaoShi WU YuDong 

作者机构：Key Laboratory of Computational GeodynamicsCASCollege of Earth ScienceGraduate University of Chinese Academy of SciencesBeijing 100049China Research Institute of Petroleum Exploration & DevelopmentState Key laboratory of Enhanced Oil RecoveryRIPED Petro ChinaBeijing 100083China Institute of Mineral ResourcesChinese Academy of Geological SciencesBeijing 100037China 

出 版 物：《Science China Earth Sciences》 (中国科学(地球科学英文版))

年 卷 期：2012年第55卷第10期

页      面：1755-1763页

核心收录：

学科分类：081803[工学-地质工程] 08[工学] 0818[工学-地质资源与地质工程] 

基　　金：supported by National Natural Science Foundation of China (Grant Nos. 41030422,40972131,40940014) National Basic Research Program of China (Grant No. 2009CB219601) 

主　　题：tectonically deformed coal deformation mechanism coalbed methane occurrence research progress 

摘      要：Research on structure of tectonically deformed coals(TDC) is a key issue in coal and gas outburst prevention and coalbed methane(CBM) *** paper presents a summary on the research progress in TDC s structural-genetic classification,tectonic strain influence on coal microstructure,coal porosity system,coal chemical structure and constituents,and their relationship with the excess coalbed *** studies suggested that tectonic deformation had significant influence on coal microstructure,coal super microstructure,and even chemical macromolecular *** main mechanisms of coal deformation are the tectonic stress degradation and polycondensation metamorphism(dynamical metamorphism).Besides,under different deformation mechanisms,the ultra-and micro-structure and chemical constituents of TDC presented distinct *** on these achievements,we propose one possible evolutionary trend of TDC with different deformation mechanisms,and suggest that the coal and gas outburst in the TDC,especially in the mylonitic coals,may be not only controlled by geological structure,but also influenced by the tectonic stress degradation of ductile ***,further study on TDC should be focused on the controlling mechanism of deformation on structure and composition of coal,generation conditions and occurrence state of excess coalbed methane from deformation mechanism of coal.