云南冶金2026，Vol.55Issue(1)：22-34,13.
基于Mathews稳定图表法的大红山铜矿采场顶板稳定性分级标准研究
Study on the Classification Standard for Roof Stability of Dahongshan Copper Mine Stopes Based on the Mathews Stability Graph Method
摘要
Abstract
To address the challenges of roof stability control in the deep mining of Dahongshan Copper Mine,a stope roof stability classification model was established based on the theoretical framework of the Mathews Stability Graph Method.This model systematically integrates geological parameters of the rock mass,characteristics of the in-situ stress field,and historical caving case data from the western mining section of the mine(including the 285/385 and 180/-20 middle levels)By quantifying rock mass quality indices,stress conditions(rock stress coefficient A),and the spatial relationships of structural planes(joint orientation coefficient B=0.5),and incorporating stope geometric characteristics(hydraulic radius to characterize exposed surface morphology),a nonlinear classification criterion was established.Zonal thresholds were determined:for the main mining section,the stable zone(exposed area≤863 m2),critical zone(exposed area 863-1 623 m2),and unstable zone(exposed area＞1 623 m2);for the western mining section,the corresponding thresholds were 811m2 and 1 067 m2.The reliability of the model was verified using 52 stope cases.The results indicate that the stope is significantly affected by its large exposed area,leading to a substantial increase in caving risk.Therefore,it is proposed that the stope planning for the 185 level should strictly limit the exposed area as an engineering countermeasure.关键词
Mathews稳定图表法/采场顶板分级/稳定性/采矿方法Key words
Mathews stability chart method/stope roof classification/stability/mining method分类
矿业与冶金引用本文复制引用
唐锐,王俊杰,展恩赛,杜佳辉,阙赟鹏..基于Mathews稳定图表法的大红山铜矿采场顶板稳定性分级标准研究[J].云南冶金,2026,55(1):22-34,13.基金项目
云南省基础研究专项面上项目(202501CF070050) （202501CF070050）
云南省重大科技专项计划(202502AB080007) （202502AB080007）
昆明冶金研究院有限公司"揭榜挂帅"科技项目(2024JB02) （2024JB02）
