摘要
以陕北A煤矿301首采面地质条件为原型,结合现场观测资料,建立相似材料模型,模拟分析了3号煤层开采过程中,随着工作面的推进,覆岩的变形、位移、破坏和岩层移动变形的规律。相似材料模拟实验结果显示,3号煤层开采,当工作面开推进到225m后,达到充分采动,冒落带高度22m,裂隙带高度57m,与经验公式法计算结果基本一致;煤层顶板岩层垮落形成的导水裂隙带会导通上覆含水层,成为矿井充水通道,煤层开采过程中应引起重视。
Taking the No.301 first working face of coalmine A in northern Shaanxi as a prototype,combined with site observed data,established a similar material model,simulated and analyzed regular pattern of overburden deformation,displacement,destruction and strata moving deformation during the coal No.3 extraction process along with face advance.The result of similar material simulation experiment has shown that after the face advanced to 225 m,coal No.3 extraction has arrived at full mining with caving zone height 22 m,fracture zone height 57 m,are basically accord with the results from empirical formula computed.The water conducted zone formed by coal roof strata caving may connect overlying aquifer and form mine water filling channel,the situation should be paid attention to during the coal extraction process.
作者
张培河
张齐
孙学阳
刘自强
Zhang Peihe;Zhang Qi;Sun Xueyang;Liu Ziqiang(Xi'an Research Institute,China Coal Technology and Engineering Group Corp,Xi'an,Shaanxi 710054;College of Geology and Environment,Xi'an University of Science and Technology,Xi'an Shaanxi 710054)
出处
《中国煤炭地质》
2019年第10期49-52,72,共5页
Coal Geology of China
基金
国家重点研发计划项目(2018YFF0213801)资助
关键词
相似材料
模拟实验
导水裂隙带
煤炭开采
similar material
simulation experiment
water conducted zone
coal mining
作者简介
第一作者:张培河(1969-),男,山东青岛人,研究员,主要从事煤与煤层气勘探开发研究工作。
