煤田地质与勘探2017，Vol.45Issue(3)：13-17,5.DOI:10.3969/j.issn.1001-1986.2017.03.003
湖南梅城—寒婆坳地区煤田显微构造成因
Genesis of microstructure in coalfield in Meicheng-Hanpo'ao area of Hunan
摘要
Abstract
The microstructural phenomena in the rock of Meicheng-Hanpo'ao area were analyzed from the micro-scopic scale, in combination with the regional tectonic background, the genesis of structure in the coalfield was analyzed from macroscopic and microscopic analysis. The results show that the study area is dominated by low temperature brittle deformation, multiple fracture sets show that the staggered development of the stress field in several times, the maximum principal compressive stress field of NW-SE direction in the first phase of Indosinian period was obtained by inversion of stylolites and the NE-SW compressive stress field in the second phase. The average differential stress is 50~70 MPa, shows that since the Indosinian tectonic deformation in the process of coal and rock experiencing tectonic stress action in middle low strength. Comprehensive conclusion is that the coalfield structure in the Meicheng-Hanpo'ao area was formed under the condition of multi medium and low intensity and complex tectonic movement dominated by brittle-ductile deformation.关键词
梅城—寒婆坳/显微构造/构造变形环境/古应力场Key words
Meicheng-Hanpo'ao/microscopic structure/tectonic deformation environment/paleostress field分类
天文与地球科学引用本文复制引用
武玉良,董业绩,李焕同,莫佳峰,李翔,曹代勇..湖南梅城—寒婆坳地区煤田显微构造成因[J].煤田地质与勘探,2017,45(3):13-17,5.基金项目
中国地质调查局地质调查项目(12120113074500) The Geological Survey Project of China Geological Survey(12120113074500) （12120113074500）
