基于极限平衡理论的上盘移动角预测研究  

Prediction of Hanging Wall Movement Angle Based on Limit Equilibrium Theory

作　　者：王平[1,2] 胡彦 程爱平[1,2] 许梦国[1,2] 张威威 胡倡瑞 WANG Ping;HU Yan;CHENG Aiping;XU Mengguo;ZHANG Weiwei;HU Changrui(School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory of Efficient Utilization and Agglomeration of Metallurgical Mineral Resources,Wuhan 430081,China)

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]冶金矿产资源高效利用与造块湖北省重点实验室,湖北武汉430081

出　　处：《金属矿山》2021年第10期8-14,共7页Metal Mine

基　　金：国家自然科学基金项目(编号:51604195);湖北省自然科学基金项目(编号:2018CFC818)。

摘　　要：程潮矿区自建矿以来60余a,均采用无底柱分段崩落法开采。随着开采活动由浅至深,矿区地表已出现大面积塌陷。由于开采工作面不断向西区转移,上盘移动角也随之发生了改变,导致地表沉降范围扩大,部分重要构、建筑物将不再处于安全范围。基于此,利用极限平衡理论构建上盘移动角预测模型,并通过数值模拟的方法对其结果进行验证。结果表明:通过上盘移动角预测模型计算得到上盘移动角约为56°,数值模拟方法得到上盘移动角约为58°;2种方法得到的结果在误差允许范围内,该预测模型可以有效预测上盘移动角;同时,当开采至-600m水平时,上盘部分地表重要构建筑物可能存在安全隐患,建议采取相应措施。The sublevel caving method without sill pillar has been used in Chengchao mining area for more than 60 years since its establishment.With the mining activities from shallow to deep,the surface of the mining area has been a largearea of collapse.Due to the continuous transfer of the mining face to the western area,the hanging wall movement angle hasalso changed,resulting in the expansion of the scope of surface subsidence,and some important structures and buildings willno longer be in the safe range.Based on this,this paper uses the limit equilibrium theory to build the hanging wall movementangle prediction model,and verifies the results by numerical simulation.The results show that:the hanging wall movementangle is about 56°calculated by the hanging wall movement angle prediction model,and 58°calculated by the numericalsimulation method;the results obtained by the two methods are within the allowable error range,and the prediction modelcan be used At the same time,when mining to-600 m level,some important structures and buildings on the surface of hang-ing wall may have potential safety hazards,so corresponding measures are recommended.

关 键 词：铁矿开采 移动角预测 极限平衡理论 数值模拟 

分 类 号：TD853.36[矿业工程—金属矿开采]