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  • CN 62-1112/TF 
  • ISSN 1005-2518 
  • 创刊于1988年
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采选技术与矿山管理

基于非线性弹性地基梁的地下矿山充填开采覆岩移动规律研究

  • 何祥锐 ,
  • 邱贤阳 ,
  • 史秀志 ,
  • 李小元 ,
  • 支伟 ,
  • 刘军 ,
  • 王远来
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  • 1.中南大学资源与安全工程学院,湖南 长沙 410083
    2.广西中金岭南矿业有限责任公司,广西 来宾 546100
何祥锐(1998-),男,湖北黄石人,硕士研究生,从事采矿技术研究工作。hexiangrui@csu.edu.cn

收稿日期: 2024-04-08

  修回日期: 2024-05-10

  网络出版日期: 2024-08-27

基金资助

广西重点研发计划项目“复杂地表环境下地下矿山开采岩移规律及低沉降充填开采技术研究”(2022AB31023);中央引导地方科技发展资金项目“地下矿山层叠采空区地压监测控制及矿柱安全高效回采研究实验室”(来科中引专项20230402)

Study on the Movement Law of Overlying Strata in Underground Mining with Nonlinear Elastic Foundation Beam

  • Xiangrui HE ,
  • Xianyang QIU ,
  • Xiuzhi SHI ,
  • Xiaoyuan LI ,
  • Wei ZHI ,
  • Jun LIU ,
  • Yuanlai WANG
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  • 1.School of Resources and Safety Engineering, Central South University, Changsha 410083, Hunan, China
    2.Guangxi Zhongjin Lingnan Mining Co. , Ltd. , Laibin 546100, Guangxi, China

Received date: 2024-04-08

  Revised date: 2024-05-10

  Online published: 2024-08-27

摘要

为了研究地下金属矿充填开采覆岩移动规律,以盘龙铅锌矿采场作为研究对象,建立非线性弹性地基梁力学模型,开展了不同采场结构参数、顶板厚度、原岩应力及充填体配比对于覆岩移动的影响研究。研究发现5个因素对于覆岩移动的影响从强到弱依次为充填体配比、采场结构参数、顶板厚度、原岩应力,提高充填体配比是控制覆岩位移的关键。通过采用Flac3D数值模拟方法计算不同充填体配比下覆岩移动值,将数值模拟分析结果与力学理论计算结果进行对比,二者差异率在3%~9%之间,从而验证了力学模型计算结果的可靠性。基于研究结果,提出地下矿山充填开采覆岩沉降控制技术,并将其应用于工业试验。研究成果可为类似矿山进行岩层控制提供借鉴。

本文引用格式

何祥锐 , 邱贤阳 , 史秀志 , 李小元 , 支伟 , 刘军 , 王远来 . 基于非线性弹性地基梁的地下矿山充填开采覆岩移动规律研究[J]. 黄金科学技术, 2024 , 32(4) : 640 -653 . DOI: 10.11872/j.issn.1005-2518.2024.04.097

Abstract

In the extraction of overlying orebodies in complex environments,it is imperative to prioritize safety and efficiency while preserving the stability of rock strata to prevent surface collapse and safeguard structures.To accomplish these objectives,it is essential to develop effective strategies for managing rock strata movement by comprehensively assessing the impact of underground backfill mining.An initial study was conducted on the impact of various mining field structural parameters,including roof thickness,original rock stress,and backfill ratio,on overlying rock movement at the Panlong lead-zinc mine.This analysis utilized a nonlinear elastic foundation beam mechanical model.Subsequent numerical simulations were performed to determine overlying rock movement values under varying backfill ratios.The results were compared to those obtained from the mechanical model,revealing differences ranging from 3% to 9%,thus validating the reliability of the mechanical model’s results.A ground mine backfill mining technology for controlling settlement of overlying rock was proposed and implemented in industrial experiments.Research findings suggest that the primary factors influencing overlying rock movement,in order of significance,are the backfill ratio,structural parameters of the mining field,roof thickness,and original rock stress.Increasing the backfill ratio is crucial for managing overlying rock displacement,while adjusting anchor support spacing and backfill ratio according to the mining field structure are effective methods for controlling overlying rock displacement.

参考文献

null Cui X, Gao Y, Yuan D,2014.Sudden surface collapse disasters caused by shallow partial mining in Datong coal field,China[J].Natural Hazards,74(2):911-929.
null Dai Huayang,2002.Study on seam inclination based mining subsidence model and its visualized application with GIS[J].Chinese Journal of Rock Mechanics and Engineering,(1):148.
null Deng X, Yuan Z, Lan L,et al,2020.Roof movement and failure behavior when mining extra-thick coal seams using upward slicing longwall-roadway cemented backfill technology[J].Advances in Materials Science and Engineering,2020:e5828514.
null Guo Kaikai,2022.Research on Strata Movement Rule and Control in Deep Solid Backfilling Mining[D].Beijing:China University of Mining and Technology.
null Han Longqiang, Wu Shunchuan, Li Zhipeng,2016.Study of non-proportional strength reduction method based on Hoek-Brown failure criterion[J].Rock and Soil Mechanics,37:690-696.
null Hu Wanjie,2023.Application of Refined GSI Geological Model in Slope Stability Analysis and Research[D].Changsha:Changsha Mining Research Institute.
null Huang Dan, Yu Bin, Wang Yunchang,et al,2024.Study on aluminum mining under coal and uniform settlement control technology of overlying rock[J].Journal of Mining and Safety Engineering,41(1):95-106.
null Kim K D, Lee S, Oh H J,et al,2006.Assessment of ground subsidence hazard near an abandoned underground coal mine using GIS[J].Environmental Geology,50(8):1183-1191.
null Lan Lixin,2018.Roof Movement Analysis in the Backfill Mining Area Based on Nonlinear Elastic Foundation Beam[D].Beijing:China University of Mining and Technology(Beijing).
null Loganathan N, Poulos H G,1998.Analytical prediction for tunneling-induced ground movements in clays[J].Journal of Geotechnical and Geoenvironmental Engineering,124(9):846-856.
null Luo Xiao,2021.Study on safety thickness of layered-roof based on improved Protodyakonov equilibrium arch theory[J].Coal Science and Technology,49(11):73-80.
null Ma Shaowei,2022.Study on Collaborative Mining Theory and Roof Strata Mechanical Behavior of Deep Gently Inclined Medium-Thick Orebody[D].Changsha:Central South University.
null Nie Yuxu,2023.Temporal and Spatial Evolution Law of Mining Fissures in Thick Sandstone Roof and Evaluation of Water Inrush Risk[D].Beijing:China University of Mining and Technology(Beijing).
null Ortlepp W D, Stacey T R,1998.Performance of tunnel support un-der large deformation static and dynamic loading[J].Tunnelling and Underground Space Technology,13(1):15-21.
null Qian Minggao, Li Hongchang,1982.Activity rules of overlying rock strata in mining areas and their influence on mine pressure[J].Journal of Coal Science,(2):1-12.
null Qin Chaoliang, Long Jianhui, Jing Ming,et al,2015.Comprehensive management scheme of geological hazards and ecological environment in coal mining subsidence areas[J].Coal Technology,34(3):320-323.
null Wang C, Li S,2020.An innovative strata movement model for predicting overlying strata deformations[J].Geotechnical and Geological Engineering,38(6):5771-5785.
null Wang Zhengshuai,2011.Study on the Non-linear Prediction Theory of Old Goaf Residual Subsidence and Its Application[D].Beijing:China University of Mining and Technology(Beijing).
null Xu Yang,2023.The Overburden and Surface Deformation Characteristics of Deep Coal Mine Filling Mining Considering the Residual Deformation of Old Goaf[D].Hefei:Anhui University of Science and Technology.
null Zhang Y, Cao S, Gao R,et al,2018.Prediction of the heights of the water-conducting fracture zone in the overlying strata of shortwall block mining beneath aquifers in western China[J].Sustainability,10(5):1636.
null Zhang Z J, Liu Y, He G C,et al,2012.Study on the effect of mined-out region on ground subsidence[J].Advanced Materials Research,524/525/526/527:726-730.
null Zhao Guojing, Qian Minggao,1987.Deformation movement and mine pressure of hard rock layers in mining areas[J].Journal of Coal Science,(3):1-8.
null Zhu Shidong,2015.Study on the Laws of Overlying Strata Movement and Surface Subsidence in Wanghe Coal Mine Paste Filling[D].Jiaozuo:Henan University of Science and Technology.
null 戴华阳,2002.基于倾角变化的开采沉陷模型及其GIS可视化应用研究[J].岩石力学与工程学报,(1):148.
null 郭凯凯,2022.深部固体充填开采岩层移动规律及控制研究[D].北京:中国矿业大学.
null 韩龙强,吴顺川,李志鹏,2016.基于Hoek-Brown准则的非等比强度折减方法[J].岩土力学,37:690-696.
null 虎万杰,2023.精细化GSI地质模型在边坡稳定性分析研究中的应用[D].长沙:长沙矿山研究院.
null 黄丹,余斌,王云昌,等,2024.煤下铝上行开采工艺控制覆岩均匀沉降研究[J].采矿与安全工程学报,41(1):95-106.
null 兰立信,2018.基于非线性弹性地基梁的充填采场顶板运动研究[D].北京:中国矿业大学(北京).
null 罗霄,2021.基于改进普氏平衡拱理论的层状顶板安全厚度研究[J].煤炭科学技术,49(11):73-80.
null 马少维,2022.深部缓倾斜中厚矿体协同开采理论及顶板岩层力学行为研究[D].长沙:中南大学.
null 聂宇旭,2023.厚砂岩顶板采动裂隙发育时空演化规律及突水危险性评价[D].北京:中国矿业大学(北京).
null 钱鸣高,李鸿昌,1982.采场上覆岩层活动规律及其对矿山压力的影响[J].煤炭学报,(2):1-12.
null 秦朝亮,龙建辉,经明,等,2015.采煤塌陷区内地质灾害与生态环境的综合治理方案[J].煤炭技术,34(3):320-323.
null 王正帅,2011.老采空区残余沉降非线性预测理论及应用研究[D].北京:中国矿业大学(北京).
null 徐阳,2023.顾及老采空区残余变形的深部煤矿充填开采覆岩及地表变形特征[D].合肥:安徽理工大学.
null 赵国景,钱鸣高,1987.采场上覆坚硬岩层的变形运动与矿山压力[J].煤炭学报,(3):1-8.
null 朱时东,2015.王河矿膏体充填开采覆岩移动变形及地表沉陷规律研究[D].焦作:河南理工大学.
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