山东国土资源2026，Vol.42Issue(9)：86-92,7.DOI:10.12128/j.issn.1672-6979.2026.09.010
山东沂源卧虎山铁矿边坡地表变形机制分析
Analysis on Surface Deformation Mechanism of Slope of Wohushan Iron Deposit in Yiyuan County in Shandong Province
摘要
Abstract
During the transition from open-pit to underground mining in Wohushan iron deposit,the su-perposition of surface and underground mining-induced stress fields leads to significantly greater deform-ation and damage to slopes and the surface than conventional single-phase mining.It has threatened the safety of residential areas,municipal and industrial facilities in Hanwang village.Based on engineering ge-ology and mining design of Wohushan iron deposit,a Midas 3D numerical model has been constructed by using No.33 exploration profile.Collecting physical and mechanical test parameters of the ore body,sur-rounding rock and backfill materials,step-by-step excavation simulations have been conducted in two phases:the first phase involving three levels and the second phase involving two levels.Comparative anal-ysis has been performed on rock mass stress evolution,surface subsidence,horizontal displacement,incli-nation,curvature and horizontal deformation indicators across mining stages,and the variation patterns of surface movement boundary angles has been clarified.It is indicated that the superposition of dual mining-induced stress fields during the transition from open-pit to underground mining is the primary cause of severe slope and surface deformation.The spatial scale of mining directly controls stress amplification,surface deformation magnitude and damage extent.Safety protection countermeasures must be implemen-ted based on the surface movement ranges corresponding to different mining levels and the importance classification of structures.This research can provide valuable references for disaster prevention and con-trol in similar open-to-underground transition mining operations.关键词
卧虎山铁矿/露天转地下/变形规律/破坏范围界定/山东沂源Key words
Wohushan iron deposit/transition from open-pit to underground mining/deformation law/definition of the scope of destruction/Yiyuan county in Shandong province分类
矿业与冶金引用本文复制引用
文增生,李孝敬,杨百玉,赵尊行,张恒,陈德杨..山东沂源卧虎山铁矿边坡地表变形机制分析[J].山东国土资源,2026,42(9):86-92,7.基金项目
鲁中浅埋急倾斜铁矿充填开采地表构筑物安全防控技术研究(KY2025-017) （KY2025-017）
