不同采出率条件下条带开采地表移动变形规律  

Surface movement and deformation law of strip mining under different recovery rates

作　　者：赵柯 ZHAO Ke(College of Energy Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Key Laboratory of Western Mine Exploration and Hazard Prevention,Ministry of Education,Xi’an 710054,China;Shanxi Fenxi Mining(Group)Co.,Ltd.,Jiexiu 032000,China)

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]西部矿井开采及灾害防治教育部重点实验室,陕西西安710054 [3]山西汾西矿业(集团)有限责任公司,山西介休032000

出　　处：《陕西煤炭》2021年第4期31-35,共5页Shaanxi Coal

摘　　要：为了研究条带开采下不同采出率的地表移动变形特征,运用FLAC 3D软件对榆林市榆阳区某矿在不同采出率条件下地表移动变形规律进行研究,分析了不同采出率与地表下沉、水平移动、曲率及倾斜的关系。研究结果表明,采出率增加时其对应的地表移动变形值也随之增大,当采出率大于50%时,各地表移动变形加剧;通过对不同采出率与地表移动变形相关数据的综合分析,得出采出率与地表移动变形呈幂函数关系,并给出对应的表达式;该矿的采出率为50%较为合理,能保证该矿井建筑物下安全开采,研究成果也为该矿区研究条带开采提供了科学依据。In order to study surface movement and deformation law under strip mining with different recovery rates,the relationship between different recovery rates and surface subsidence,horizontal movement,curvature and slope of a mine in Yuyang District of Yulin City was studied by FLAC 3D software.The results show that with the increase of recovery rate,the value of surface movement and deformation also increases,and when the recovery rate is greater than 50%,the surface movement and deformation will intensify.Based on the comprehensive analysis of the relevant data of different recovery rates and surface movement and deformation,the relationship between recovery rate and surface movement and deformation is power function,and the corresponding expression is given.The analysis shows that the reasonable recovery rate of strip mining in this mine is 50%,which can ensure the safe mining under buildings and provide scientific basis for strip mining in this mining area.

关 键 词：采出率 移动变形 条带开采 数值模拟 拟合分析 

分 类 号：TD325[矿业工程—矿井建设]