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DOI:
矿冶:2020,(4):-
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陡倾斜薄矿体浅孔留矿法采场围岩稳定性分析
(云南黄金矿业集团股份有限公司)
Stability Analysis of Surrounding rock of stope with shallow hole retention method for steeply inclined thin ore body
ZHAI Hui-chao1,2, YANG YONG1,2, HU Wei-wei1,2, DONG Zhi-fu1,2
(1.Yunnan Gold Mining Group Co.,Ltd Kunming 650000;2.China :Zhai Hui-chao,E-mail: zhaihuichaohu@163.com)
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投稿时间:2020-03-10    修订日期:2020-03-20
中文摘要: 针对红牛铜矿陡倾斜矿体浅孔留矿法开采过程中损失贫化大的问题,采用Ansys和FLAC3D联合建模计算。应力场、位移场和塑性区跟踪结果说明集中放矿前矿石散体对上下盘围岩具有支撑作用。但是,受围岩岩性弱和矿石集中放出后采空区暴露面积和暴露时间影响,采场稳定性不易控制,容易造成大范围片帮,致使损失贫化加剧。为此,通过设计锚杆对帮岩加固,优化爆破减少震动干扰和控制矿岩界限,控制与监测放矿降低损失贫化,实现矿石资源充分回收利用。
Abstract:Aiming at the prominent problem of ore loss and dilution during the mining process of red bull copper mine, a combined approach of the ANSYS and FLAC3D which were practical and efficient analysis software was adopted. The results of stress field, displacement field and plastic zone indicated that ore bulk in the stope before large scale drawing was beneficial to the stability of wall rock. However, under the impact of poor rock mass or exposed area and time of goaf, the stability wasn’t controlled simply, which could cause a wide range of falling, and even more disadvantageous to the loss and dilution of ore. For all above, a technical solution was designed for ensuring the utilization of mineral resources, including three parts that respectively were anchor bolt for reinforcing, blasting optimizing to reduce vibration interference and control rock boundaries, and monitoring of ore drawing to cut down the loss ratio and dilution ratio.
文章编号:     中图分类号:TD327    文献标志码:
基金项目:国家“十三五”重点研发计划项目(编号:2016YFC0801601)
引用文本:
翟会超,杨勇,胡巍巍,董志富.陡倾斜薄矿体浅孔留矿法采场围岩稳定性分析[J].矿冶,2020,(4):.

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