摘要
针对江西某矿区破碎带发育、围岩差异显著的特点及敏感目标保护需求,采用MatDEM离散元软件建立数值模型,通过模拟4个中段的开采与充填过程,研究上向水平分层进路充填采矿法开采过程中岩层形变及地表沉降规律,并监测居民区、农田及公路的地表沉降数据。结果表明:各中段开采后岩层最大位移随深度增加而增大,但胶结充填使位移增速降低;地表敏感区监测点倾斜、曲率及水平变形均低于GB 50771—2012《有色金属采矿设计规范》Ⅰ级建(构)筑物允许值,验证了全尾砂胶结充填方案的有效性。
To address the characteristics of a mining area in Jiangxi Province,such as a well-developed fractured ore zone,significant variations in surrounding rock properties,and the need to protect sensitive surface structures,a numerical model was established using the discrete element software MatDEM.The model simulates the mining and filling process across 4 levels to study the rules of rock mass deformation and surface subsidence during upward horizontal slicing and filling.Surface subsidence data were monitored in residential areas,farmland,and along roadways.The results indicate that the maximum displacement of the rock mass increases with mining depth across the levels,while cemented backfills effectively reduce the rate of displacement growth.The values of tilt,curvature,and horizontal deformation at monitoring points in sensitive surface areas are all below the allowable value for Class I buil-dings(structures)specified in GB 50771—2012 Code for Design of Nonferrous Metal Mining.This verifies the effec-tiveness of the ungraded tailings cemented filling scheme.
作者
耿加波
郑思莹
巫霖
杨相
Geng Jiabo;Zheng Siying;Wu Lin;Yang Xiang(School of Emergency Management and Safety Engineering,Jiangxi University of Science and Technology;Ganzhou Industrial Investment Holding Group Co.,Ltd.)
出处
《黄金》
2025年第7期46-51,共6页
Gold
基金
国家自然科学基金(52364013)
中国博士后科学基金面上项目(2022M722924)。
关键词
地表沉降
建筑物
充填采矿
数值模拟
MatDEM离散元软件
开采沉降
surface subsidence
buildings
filling mining
numerical simulation
MatDEM discrete element software
mining-induced subsidence
作者简介
耿加波(1988-),男,副教授,研究方向为矿山安全,E-mail:gengjiabo@163.com;通信作者:巫霖(1988-),男,工程师,从事矿山安全方面的工作,E-mail:971228233@qq.com。
