中南大学学报（自然科学版）2026，Vol.57Issue(7)：3286-3302,17.DOI:10.11817/j.issn.1672-7207.2026.07.031
采空区围岩-冒落散体承载特性研究
Study on the bearing characteristics of the goaf surrounding rock-caved granular
摘要
Abstract
To address the instability-induced disasters of goaf caused by the caving mining method,the bearing characteristics of goaf surrounding rock-caved granular were studied,and then the instability-induced disasters mechanism and prevention methods of the goaf were raised.Firstly,the deformation and crushing rules of caved granular were analyzed using the confining compression tests.Secondly,the constitutive model and instability discriminant criterion of goaf surrounding rock-caved granular were built based on the component model method.Finally,the reliability and effectiveness of prevention methods of the instability-induced disasters of goaf were verified by the mine engineering case.The collaborative scheme of caving mining method and goaf management was raised,and the engineering practice was carried out in the mine.The results show that the stress-strain curves show a"fast—slow—fast"growth law with various size distribution,and the peak strain increases with the particle size and the ratio of the broken rock height to the compacted caved granular height increase under broken rock accumulation effect.The square of the ratio of the broken rock height to the composite body height has a linear relationship with the peak strain of the broken rock-caved rock and ore combination.The instability-induced disasters index of goaf is proposed as the matching coefficient of goaf surrounding rock and caved granular.This coefficient is positively correlated with the surrounding rock elastic modulus and negatively correlated with the height proportion of broken rock and the burial depth of goaf.The research results provide the theoretical basis and technical support for solving the technical problems that are difficult to balance mining efficiency and environmental protection.关键词
冒落散体/采空区围岩/本构模型/承载特性/失稳灾变Key words
caved granular/goaf surrounding rock/constitutive model/bearing characteristics/instability-induced disasters分类
矿业与冶金引用本文复制引用
卢悦,刘洋,王文才,任凤玉,何荣兴,丁航行..采空区围岩-冒落散体承载特性研究[J].中南大学学报（自然科学版）,2026,57(7):3286-3302,17.基金项目
国家自然科学基金资助项目(52274113) （52274113）
内蒙古自然科学基金资助项目(2025MS05035) （2025MS05035）
内蒙古自治区直属高校基本科研业务费资助项目(2023QNJS091)(Project(52274113)supported by the National Natural Science Foundation of China （2023QNJS091）
Project(2025MS05035)supported by the Natural Science Foundation of Inner Mongolia （2025MS05035）
Project(2023QNJS091)supported by the Fundamental Research Funds for the Affiliated Universities in Inner Mongolia Autonomous Region) （2023QNJS091）
