中国科技核心期刊
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采场充填体内掘进巷道的支护技术研究
- 江科
- 作者单位：
- 长沙矿山研究院有限责任公司&国家金属采矿工程技术研究中心
基金项目：
- “十三五”国家重点研发计划项目（2020YFC1909205）；2022年度长沙市科技计划项目（kh2201436）
详细信息：
- 作者简介：
- 江科（1992—），男，湖北天门人，工程师，硕士，从事采矿方法、充填工艺等方面的研究工作；长沙市岳麓区麓山南路343号，长沙矿山研究院有限责任公司，410012；E-mail：Jiangk92@163.com
- 通讯作者：
- isnull
- PDF下载
Research on excavation roadway support technology in the filling body in stopes
- English Author：
- Changsha Institute of Mining Research Co.,Ltd.&National Engineering Research Center for Metal Mining
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
某矿山采用充填采矿法回收Ⅱ步骤矿柱，需要在Ⅰ步骤充填体内掘进出矿巷来作为矿柱回采的出矿底部结构，出矿巷的直接顶板为充填体，为了保证充填体内成巷的安全性，选择合适的巷道掘进手段和支护方式，提高二者的衔接搭配效率，尽可能降低巷道掘支成本，充分借鉴类似矿山工程案例，参照国家、行业及典型企业的相关规范或标准，提出钻爆法＋U型钢拱架超前支护、悬臂式掘进机＋喷锚网联合支护2种方案。通过对工艺方案、掘支效率和成本进行论述分析，经技术经济比较，最终建议矿山采用悬臂式掘进机＋喷锚网联合支护的方案在充填体内掘进巷道。
关键词:
充填体；掘进；钻爆法；悬臂式掘进机；U型钢拱架；超前支护；喷锚网支护
Abstract:
A mine uses the filling mining method to recover the Step Ⅱ ore pillars and needs to excavate the ore-drawing roadway inside the Step Ⅰ filling body to serve as the bottom ore drawing structure for the pillar recovery,and the direct roof of the ore-drawing roadway is the filling body.To ensure the safety of the roadway formation within the filling body,the study chooses the appropriate roadway excavation means and support method,improves the efficiency of the cohesion of the two,and reduces the cost of roadway excavation and support as much as possible.Referring to similar mine engineering cases,as well as the relevant norms or standards of the country,industry,and typical enterprises,the study proposes 2 schemes,drill-blasting method＋U-shaped steel arch in-advance support and cantilever roadheader＋shotcrete-bolt-mesh joint support.Based on discussion and analysis of the process scheme,the excavation and support efficiency,and the cost,and the technical and economic comparison,it is finally recommended that the mine adopt the joint support scheme of cantilever roadheader＋shotcrete-bolt-mesh to excavate the roadway in the filling body.
Keywords:
filling body;excavation;drill-blasting method;cantilever roadheader;U-shaped steel arch;in-advance support;shotcrete-bolt-mesh support