摘要
回顾和总结了煤割理定义、要素、成因的研究现状与存在问题。根据煤矿井下对煤割理系统的观测、室内实验,结合煤层气开发工程实践,指出割理是一种具有几何形态与固定组合样式的内生裂隙,成煤作用中由煤基质收缩产生的随机发育而无定向性的内生裂缝不是割理。端割理和面割理相伴而生,并随着煤化作用递进而新陈代谢。割理是古垂向应力与煤体积收缩共同作用的结果。研究煤化作用中煤大分子官能团重组的地球化学参数变化规律、煤官能团重组与古垂向应力的耦合关系、以及割理新陈代谢的方式和过程,是揭示煤割理形成机理的主攻方向。
Status and problems of coal cleats′definition,elements,origin in nearly 200 years are reviewed and summarized.According to the observation in mine,experiment in laboratory,combined with the development engineering practice of coalbed methane,the results show that cleat is a kind of endogenetic fracture with geometric shape and fixed combination style.Endogenous cracks,in random growth with no-direction,generated by coal matrix shrinkage in coal-forming process,are not cleat.Butt cleat and face cleat are accompanied,occurring metabolism with the coalification progress.The cleats are the result of joint action in the vertical stress and coal volume shrinkage.The main direction to reveal the cleat-forming mechanism is to study the change regulation of geochemical parameters of coal macromolecules functional reorganization in coalification,to study the coupling relationship between coal functional restructure and vertical stress,and to study the way and process of cleat metabolism.
出处
《天然气地球科学》
EI
CAS
CSCD
北大核心
2015年第9期1621-1628,共8页
Natural Gas Geoscience
基金
国家科技重大专项课题(编号:2011ZX05040-005)
中国煤炭科工集团有限公司科技创新项目(编号:2013ZD008)
中煤科工集团西安研究院有限公司自筹资金项目(编号:2013XAYFX 003)联合资助
关键词
新陈代谢
成煤作用
形成机理
割理系统
煤储层
Metabolism
Coal-forming process
Formation mechanism
Cleat system
Coal reservoir
