丰山铜矿北缘试验采场稳定性研究  

Stability study of trial stope on the northern margin of Fengshan Copper Mine

作　　者：张宏荣 张纯锋 付琛 王贻明 杜双成 石大庆 刘鹏鹏 Zhang Hongrong;Zhang Chunfeng;Fu Chen;Wang Yiming;Du Shuangcheng;Shi Daqing;Liu Pengpeng(Daye Nonferrous Metals Co.,Ltd.;School of Civil and Resource Engineering,University of Science and Technology Beijing)

机构地区：[1]大冶有色金属有限责任公司 [2]北京科技大学土木与资源工程学院

出　　处：《黄金》2024年第8期64-67,80,共5页Gold

基　　金：国家自然科学基金面上项目(52374111)。

摘　　要：通过矿岩力学强度测试和工程地质调查对丰山铜矿北缘试验采场稳定性开展研究,重点分析矿岩质量评价结果和采场顶板水力半径计算结果。研究结果表明:RMR法和Q分类法对矿岩质量评价均为好;通过Mathews稳定性图表法计算得出,北缘矽卡岩的无支护安全跨度为9.19~11.49 m;大理岩的无支护安全跨度为9.45~11.81 m;花岗闪长斑岩的无支护安全跨度为11.40~18.00 m。This study investigates the stability of trial stope on the northern margin of Fengshan Copper Mine through ore rock mechanics strength tests and engineering geological surveys.The focus is on analyzing rock mass quality assessment results and calculating the hydraulic radius of the stope roof.The research findings indicate:that rock mass quality is rated as good using both the RMR method and the Q classification method;according to the Mathews stability graph method,the unsupported safe span for skarn in the northern margin ranges from 9.19 m to 11.49 m;the unsupported safe span for granite ranges from 9.45 m to 11.81 m;the unsupported safe span for granodiorite porphyry ranges from 11.40 m to 18.00 m.

关 键 词：丰山铜矿 地质调查 矿岩质量评价 Mathews稳定性图表法 水力半径 稳定性 

分 类 号：TD853[矿业工程—金属矿开采]