摘要
本文从煤层的流变环境,微观及宏观的煤层流变特征,论证了湘中测水煤系煤厚的变化,煤层之不稳定,主要是被后期改造的结果。通过对煤层流变构造的研究,说明煤层本身具有很强的记录构造作用的能力,煤层流变构造的多种多样又说明是经历了多期次、多种方式构造作用的结果。在煤层由高压区流向低压区后,煤层富集带就成为瓦斯、应力的高度集中点,最易诱发瓦斯突出。对煤层流变的研究,不仅有利于今后煤田地质勘探及煤矿的开拓,而且还有利于深化对煤田地质构造的认识。
Through discussion on the rheologic environment, the microscopic and macroscopic rheologic features of the coal beds, this paper proves that the change in thickness and the instability of the coal beds in Ceshui coal measures in central Hunan is the result of epigenetic reformation. The study on the rheologic structure of the coal beds indicates that the coal beds themselve are capable of recording tectonic processes and the various rheologic structure style indicates that the coal beds had undergone through many times and many kinds of tectonic processes. When the coal bed flows from high pressure area to low pressure area, the enriched zone of coal bed becomes the concentrating center of gas and stress. which is liable to bring out gas outburst. The above studies is not only helpful for the exploration and exploitation of coalfield, but also helpful for deepening the understanding of coalfield geologic structure.
出处
《湖南地质》
1990年第3期36-40,共5页
Hunan Geology
关键词
煤系
流变
煤层
底缘构造
顶板构造
Ceshui coal measure
rheology
Floor structure
Roof structure
Gas outburst
