摘要
以程潮矿-570m中段、-675m中段矿体与围岩为研究对象,采用室内相似模拟试验方法,对程潮矿深部矿体分区开采地表沉降规律进行研究,分析了深部分区开采下地表沉降与围岩应力随开采深度变化规律。相似模拟研究表明:随着开采深度的增加,地表沉降数值亦呈增长趋势;在相似模拟试验所有待采矿体开采完毕之后,地表最大沉降点为8#地表监测点,总沉降值为19.058mm,地表最小沉降点为1#地表监测点,总沉降值为2.199mm;从应力变化规律上可知无底柱崩落法对矿岩的应力变化影响较大,而充填体的充填对空区的保护作用显著。通过数值模拟分析和程潮矿实际地表监测数据对相似模拟试验结果进行工程验证,综合分析3组数据得出了分区开采目标矿体时地表的沉降值对新程潮大湾的稳定性不产生较大影响的结论。
Taking the-570 m and-675 m level orebody and wall rock of Chengchao Mine as the research object,the law of surface subsidence of deep orebody mining in the mine is studied by means of similar simulation test in laboratory,the variation law of surface settlement and surrounding rock stress with mining depth under deep sub-area mining is analyzed.The study of similarity simulation shows that the value of surface subsidence increases with the mining depth,and the maximum subsidence point is 8#monitoring point after the mining of all the ore bodies to be mined in the similarity simulation test,the total subsidence value is 19.058 mm,the minimum subsidence point is 1#surface monitoring point,and the total subsidence value is 2.199 mm,the filling of filling body has a significant protective effect on the empty area.Through numerical simulation analysis and actual surface monitoring data of Chengchao Mine,the results of similar simulation tests are verified in engineering,based on the analysis of the three groups of data,it is concluded that the surface subsidence has no significant effect on the stability of New Chengchao big Bay.
作者
王平
齐梦寒
骆正杰
陈国兴
韩亚民
冯俊
WANG Ping;QI Menghan;LUO Zhengjie;CHEN Guoxing;HAN Yamin;FENG Jun(School of Resources and Environmental Engineering,Wuhan University of Science and Technology,Wuhan 430081,China;Department of police,Jiangxi Judicial Police Vocational College,Nanchang 330013,China;Zhongxi(Hunan)Rare Earth Development Co.,Ltd.,Yongzhou 425500,China;Chengchao Mining Co.,Ltd.,Wuhan Iron and Steel Resources Group,Ezhou 436051,China)
出处
《金属矿山》
北大核心
2025年第1期250-258,共9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)
金属矿山高效开采与安全教育部重点实验室开放基金项目(编号:ustbmslab201704)。
关键词
深部开采
地表沉降
相似模拟
工程验证
deep mining
surface subsidence
similarity simulation
engineering verification
