摘要
为了探究东滩煤矿规划设计的七采区某大型断层防水煤柱留设宽度及其阻渗性,在系统分析了研究区的地质、水文地质和奥灰水文地质条件基础上,建立了主采煤层与该断层相互之间关系的工程地质模型.从安全角度分析计算了断层在顺煤层方向上和煤层底部隔水层能否承受下部奥灰含水层水压力两种情况下该大型断层防水煤柱具体留设值.最后采用类比法,根据该断层性质,结合现场压渗数据类比分析了该断层带的阻渗性,发现规范规定的偏保守.研究结果对类似断层煤柱的安全留设和阻渗性评价具有重要的参考价值.
In order to study the width of the waterproof pillar of a large fault in the seventh mining area in Dongtan Coal Mine,the geological and hydrogeological conditions of the studied area are systematically analyzed by relevant data,and the engineering geological model is established for the relationship between the main coal seam and the fault.The specific setting values of the large fault waterproof coal pillar are calculated from the perspective of safety when the fault water is in the direction of coal seam and the water-resisting layer at the bottom of coal seam,the values can bear the water pressure of the lower Ordovician limestone aquifer.At last,the permeability resistance of the fault zone is analyzed by analogy according to the field pressure and permeability data.The study results have an important reference value for the safety of similar fault pillar and fault permeability analysis.
作者
谢华东
侯俊华
朱术云
Xie Huadong;Hou Junhua;Zhu Shuyun(Dongtan Coal Mine,Yanzhou Coal Mining Company Limied,Zoucheng 273500,China;School of Resources and Geosciences,China University of Mining and Technology,Xuzhou 221116,China)
出处
《矿业工程研究》
2020年第1期54-58,共5页
Mineral Engineering Research
基金
国家自然基金资助面上项目(41741020)。
关键词
奥灰水
防水煤柱
大型断层
阻渗性
类比分析
Ordovician limestone water
waterproof coal pillar
large fault
permeability
analogy analysis
