云南冶金2025，Vol.54Issue(5)：32-38,7.
毛坪铅锌矿深部地应力分布特征研究
Research on Characteristics of Deep Ground Stress Distribution in Maoping Lead-Zinc Mine
摘要
Abstract
At the Maoping Lead-Zinc Mine,the maximum mining depth has exceeded 900 m.Multiple rockburst events have occurred underground,causing severe deformation in local roadways.The high ground stress conditions at depth pose a significant threat to safe production.Ground stress measurements at different depths in the mine were conducted using the hydraulic fracturing method.The results indicate that both the eastern and western sections of the river area are high-stress zones,with tectonic stress dominating in both regions.The relationship between the three principal stresses is consistent between the eastern and western sections,showing σH>σV>σh.The direction of the maximum horizontal principal stress ranges from 297.4° to 309°,and the stress magnitude increases with depth,generally aligning with the stress field direction of current tectonic movements in the area.关键词
矿山深部/地应力/水压致裂法/构造应力Key words
deep mine/in-situ stress/hydraulic fracturing method/tectonics stress分类
矿业与冶金引用本文复制引用
胡其全,张冬旺,邬坤..毛坪铅锌矿深部地应力分布特征研究[J].云南冶金,2025,54(5):32-38,7.基金项目
中国铜业有限公司科技专项"毛坪铅锌矿深部水文地质工程地质勘查"(2022-12) （2022-12）
