黄金矿山深部地应力测试与分布规律研究  

Ground stress testing and research on its distribution patterns in deep sections of gold mines

作　　者：蒋万飞 Jiang Wanfei(Xincheng Gold Mine of Shandong Gold Mining Co.,Ltd.)

机构地区：[1]山东黄金矿业股份有限公司新城金矿

出　　处：《黄金》2024年第11期53-57,共5页Gold

基　　金：国家重点研发计划项目(2023YFC2907400)。

摘　　要：高地应力是深部开采不可避免的难题。为确保新城金矿在高地应力环境下的安全高效开采,采用瑞典LUT地应力测定仪,运用应力解除法对新城金矿-830 m、-930 m、-1030 m中段共计6个钻孔岩芯进行地应力测量,并用LUT-str专用岩体应力计算程序对测试结果进行综合分析,采用赤平极射投影软件绘制出测点主应力方位赤平面投影图,使用线性回归方法,对所测6个测点的应力值进行回归分析。研究结果表明:新城金矿地应力场主要是水平构造应力,矿区围岩含有较多的节理裂隙,巷道开挖后,矿岩较为破碎、易风化,片帮等灾害现象易发生,应在开挖后及时支护。此研究为新城金矿深竖井工程的安全施工、合理支护设计及深部开采支护等提供了基础资料与依据,同时也为类似矿山竖井掘进与矿山开采起到示范作用。High ground stress is an inevitable challenge in deep mining.To ensure safe and efficient mining operations in the high-stress environment of Xincheng Gold Mine,the Swedish LUT ground stress measurement instrument was used.A total of 6 borehole cores at the-830 m,-930 m,and-1030 m levels of Xincheng Gold Mine were measured using the stress relief method.The LUT-str dedicated rock stress calculation program was employed for comprehensive analysis of the test results.Stereographic projection software was used to create stereographic projection diagrams of the principal stress directions at the measurement points,and linear regression was applied for regression analysis of the stress values from the 6 measured points.The research result shows that the ground stress field in Xincheng Gold Mine is primarily horizontal tectonic stress.The surrounding rock in the mining area contains numerous joints and fissures,leading to more fragmented and weathered rock after excavation,which makes phenomena like spalling more likely.Therefore,timely support is recommended after excavation.This study provides fundamental data and references for safe construction of deep shafts,rational support design,and deep mining operations,while also serving as a model for shaft excavation and mining in similar mines.

关 键 词：竖井掘进 高地应力 地应力测试 地应力场 应力解除法 深部开采 支护 

分 类 号：TD32[矿业工程—矿井建设]