摘要
从分析煤层底板的裂隙分布出发,建立裂隙岩体的渗流模型,然后应用该模型分析得到的渗流场,采用考虑渗流软化效应的弹塑性有限元方法,分析了煤层开采过程中煤层底板破坏状态,为受煤层安全开采的提供了依据。
In North China coalfields, there are layers of Ordovician limestone with rich confined water which threatens safety of above coal mining. In the paper, the distribution of joints in coal floor rock masses is analyzed. A seepage model is used to establish a seepage field to analyze the stability of floor rock masses. By elastic and plastic finite element method considering seepage softness property of rocks, damage state of coal floor in mining is analyzed. Those provide basis for safety mining of coal floor.
出处
《地质与勘探》
CAS
CSCD
北大核心
2004年第2期90-91,共2页
Geology and Exploration
基金
国家自然科学基金(编号:59974015)资助。
关键词
承压水
煤层
渗流
安全开采
confined water, coal seam, seepage, safety mining
