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注浆固结法在残矿回收中的应用
- 时跃宁|魏诚|宫建国
- 作者单位：
- 河北中金黄金有限公司|河北中金黄金有限公司|河北金厂峪矿业有限责任公司
基金项目：
- isnull
详细信息：
- 作者简介：
- 时跃宁（1990—），男，工程师，从事金属矿山采矿生产管理工作；E-mail:83998315@qq.com
- 通讯作者：
- isnull
- PDF下载
Application of grouting consolidation method in the recovery of residual ore
- English Author：
- Hebei Zhongjin Gold Co.,Ltd.|Hebei Zhongjin Gold Co.,Ltd.|Hebei Jinchangyu Mining Co.,Ltd.
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
针对某黄金老矿山资源衰减问题，为合理利用浅部高品位残矿资源，提出采用预留顶柱和不预留顶柱2种回采方案。预留顶柱分为预留1 m顶柱和0.5 m顶柱；不预留顶柱分为注浆胶结厚度5 m和10 m。根据数值模拟分析结果，确定采用预留部分顶柱与注浆固结干式充填料的综合护顶措施，即预留顶柱厚度1 m，注浆胶结厚度5 m。详细介绍了残矿回收工艺流程。通过对试验采场上部采空区已有松散充填料进行注浆固结，成功回收矿石量4 500 t，金金属量24 kg，获得经济效益661.98万元。该试验的成功经验将指导矿山后续残矿的回收工作。
关键词:
高品位；残矿；松散充填料；注浆；固结法；顶板；数值模拟
Abstract:
In response to the issue of resource depletion in an old gold mine,this study proposes 2 recovery schemes to effectively utilize shallow high-grade residual ore resources:one with reserved crown pillars and one without.The reserved crown pillar scheme includes options for 1 m and 0.5 m pillars,while the no reserved pillar scheme involves grouting consolidation with thicknesses of 5 m and 10 m.Based on the results of numerical simulations,the joint support method of partial crown pillar reservation and grouting consolidation of dry backfill materials was selected,with a reserved crown pillar thickness of 1 m and grouting consolidation thickness of 5 m.The process flow for residual ore recovery is detailed.By grouting and consolidating the existing loose backfill material in the upper voids of the trial stope,4 500 t ores containing 24 kg gold were successfully recovered,yielding an economic benefit of 6.619 8 million yuan.The success of this trial will continue to guide future residual ore recovery efforts in the enterprise.
Keywords:
high-grade;residual ore;loose backfill material;grouting;consolidation method;roof;numerical simulation
