煤矿安全2012，Vol.43Issue(4)：127-131,5.
屯兰矿奥陶系隔水关键层孔隙性分析
Porosity Analysis of Ordovician Water-resisting Key Strata in Tunlan Coal Mine
郭盛彬 1郭英海 1李俊杰 2陈海洋3
作者信息
- 1. 中国矿业大学资源与地球科学学院,江苏徐州221116
- 2. 西山煤电集团公司地质处,山西太原030053
- 3. 徐州矿务集团庞庄煤矿,江苏徐州221008
- 折叠
摘要
Abstract
Taking G3 hydrological hole in Tunlan coal mine as sampling aperture and according to comprehensive experiments such as the rock slice appraisal,X-Ray fluorescence spectrum analysis and rock microstructure analysis,lithologic characters of Fengfeng Group and pore structure are analyzed.Research illustrate that the upper Fengfeng Group is breccia limestone,while the lower is dolomicrite filled with coarser crystal gypsum in fracture without karst development.The pore＇s diameter≥10 μm in the upper Fengfeng group accounts for 27%,while that pore＇s diameter in the middle and lower occupies 11% and the diameter 0.1μm of fine and supercapillary interstice takes up 59%,which means that the permeability of the lower Fengfeng group declines to a large extent.There is an aquifuge between the upper and lower Fengfeng group,in which the thickness of available water-resisting key strata is 35 m in the upper part and 70m in the lower.关键词
峰峰组/薄片鉴定/压汞实验/隔水关键层/孔隙性Key words
fengfeng group/thin-section identification/pressured-mercury testing/water-resisting key strata/porosity分类
矿业与冶金引用本文复制引用
郭盛彬,郭英海,李俊杰,陈海洋..屯兰矿奥陶系隔水关键层孔隙性分析[J].煤矿安全,2012,43(4):127-131,5.
