摘要
针对采矿工程所处地质环境往往具有较强的非均质特性和复杂性,难以对复杂特厚煤层重复开采条件下上覆岩层的变形特征进行明确解释的问题,以抚顺矿业集团老虎台矿井田东部原生煤体区域为实例,采用MIDAS&FLAC3D数值模拟方法,研究复杂特厚煤层重复开采条件下上覆岩层的变形和破坏规律。研究结果表明,复杂特厚煤层重复开采条件下,工作面回采形成垮落带与裂隙带等破坏范围将受到断层、岩层分界面等结构的制约,在临近断层的断层面和2种不同岩性分界面处产生离层结构,研究成果为该矿及相近条件矿井的防水及顶板维护工作提供了现实依据。
Due to strong heterogeneity and complexity often existing in mining engineering geological environment, it was hard for the present theory to explain deformation behavior of overlying strata under repeated mining condition in complex thick coal seam. Based on the original coal region geological conditions in eastern of Laohutai coal mine, Fushun Mining Group, using MIDAS ＆ FLAC3D numerical simulation method, studied the deformation and failure law of overlying strata under repeated mining condition in complex thick coal seam. The results showed that under repeated mining condition in complex thick coal seam, the caving zone and fissure zone formed by working face mining, were controlled by fault and rock interfaces. The research results offered help to waterproof and roof maintenance work to Laohutai coal mine and coal mine with similar conditions.
出处
《煤炭与化工》
CAS
2014年第1期36-39,共4页
Coal and Chemical Industry
基金
国家自然科学基金资助项目(51274117)
国家自然科学基金青年基金资助(51104085)
关键词
复杂特厚煤层
重复开采
上覆岩层
数值模拟
complex thick coal seam
repeated mining
overlying strata
numerical stimulation
