摘要
在煤高温高压实验的基础上，对实验变形煤及其原始样品进行了Ｘ射线衍射研究，探讨了煤变形的微观机理及其影响因素．阐明了定向压力是促使煤基本结构单元增大的重要因素，说明了高应变环境、强应变和低应变速率有利于单元堆砌度（Ｌｃ）和延展度（Ｌａ）的增长及面网间距（ｄ００２）的减小，原始煤级对变形煤的ＸＲＤ结构演化也具有重要影响．
Based on tests of coal samples under high temperature and high confined pressure the structural evolution of the deformed coal samples was studied by X-ray diffraction. The micro-mechanism of the deformed coal samples and their influencing factors were discussed. The results showed that the directional pressure was one of the important factors which led to the development of the basic structural elements. The environment of high strain, intensive strain and low strain rate are favorable to the increase of the stacking height and extension degree of the element, and to the decrease of lamellae distance of coal. Moreover, the rank of the original coal samples was also important to the XRD structural evolution of the deformed coal samples.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1998年第2期188-193,共6页
Journal of China Coal Society
基金
国家自然科学基金
关键词
高温高压
变形煤
X射线衍射
结构演化
high temperature and confined pressure, deformed coal, X-ray diffraction, structural evolution
