基于COMSOL的杨林坳钨矿采场结构参数优化
Optimization of Stope Structural Parameters of Yanglin'ao Tungsten Mine Based on COMSOL
陈峰宾 1李铭杨 1王贻明 2程超 3焦华喆 4何建华 3王维 2田胜平3
作者信息
- 1. 河南理工大学土木工程学院
- 2. 北京科技大学土木与环境工程学院
- 3. 衡阳远景钨业有限责任公司
- 4. 河南理工大学土木工程学院;北京科技大学土木与环境工程学院
- 折叠
摘要
通过COMSOL数值模拟软件,针对杨林坳钨矿充填法采场安全性问题,基于围岩失稳和矿壁失稳判据,分别确定一步骤采场跨度区间和矿壁厚度区间.对比不同采场结构参数无支护情况下围岩的应力、塑性应变以及顶板垂直位移,同时考虑矿山开采的安全经济性能,确定最优采场结构参数.研究结果表明:①结合岩体的抗拉、抗压强度,确定一步骤采场跨度安全区间为13～18 m;②结合等效应力场、塑性区、位移场等对比分析,确定一步骤采场最优跨度为13 m;③矿壁厚度为4.5 m时可保证现场施工的安全性.
Abstract
Through COMSOL numerical simulation software,aiming at the safety problem of filling method stope in Yanglin'ao tungsten mine,based on the criterion of surrounding rock instability and mine wall instability,the first-step stope span interval and mine wall thickness interval are determined respec-tively.The stress,plastic strain and vertical displacement of surrounding rock under different stope struc-ture parameters without support are compared.Considering the safety and economic performance of mining,the optimal stope structure parameters are determined.The results show that:Combined with the tensile and compressive strength of rock mass,the safety interval of first-step stope span is determined to be 13～18 m.Combined with the comparative analysis of equivalent stress field,plastic zone and displacement field,the optimal span of first-step stope is determined to be 13 m.When the thickness of the mine wall is 4.5 m,the safety of the site construction can be guaranteed.
关键词
失稳判据/二步骤开采/数值模拟/采场结构优化Key words
instable judgement/second-step mining/numerical simulation/optimization of stope struc-ture引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据