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
张宏荣 1张纯锋 1付琛 1王贻明 2杜双成 2石大庆 2刘鹏鹏2
作者信息
- 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
- 折叠
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.
Abstract
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Key words
Fengshan Copper Mine/geological survey/rock mass quality assessment/Mathews stability graph method/hydraulic radius/stability引用本文复制引用
基金项目
国家自然科学基金面上项目(52374111)
出版年
2024
NETL
NSTL
万方数据