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空场嗣后充填采场充填挡墙受力分析与构筑工程实践
- 作者：
- 郝显福|刘慧|赵丽军|杨会选|柴衡山
- 作者单位：
- 西北矿冶研究院&甘肃省深井高效开采与灾变控制工程实验室|西北矿冶研究院|甘肃厂坝有色金属有限公司厂坝铅锌矿|甘肃厂坝有色金属有限公司厂坝铅锌矿|西北矿冶研究院&甘肃省深井高效开采与灾变控制工程实验室
基金项目：
- 白银市科技计划项目（2022-2-32G）
详细信息：
- 作者简介：
- 郝显福（1990—），男，高级工程师，从事采矿科研、设计及咨询工作；E-mail:56696848@qq.com
- 通讯作者：
- isnull
- PDF下载
Stress analysis of retaining wall of open stope with subsequent filling and its construction engineering practice
- English Author：
- Northwest Mining and Metallurgy Research Institute&Gansu Deep Mine High Efficiency Mining and Disaster Control Engineering Laboratory|Northwest Mining and Metallurgy Research Institute|Changba Lead-Zinc Mine,Gansu Nonferrous Metal Co.,Ltd.|Changba Lead-Zinc Mine,Gansu Nonferrous Metal Co.,Ltd.|Northwest Mining and Metallurgy Research Institute&Gansu Deep Mine High Efficiency Mining and Disaster Control Engineering Laboratory
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
厂坝铅锌矿采用空场嗣后充填采矿法开采，为了井下采场充填?忱凳攵圆沙〕涮畹睬焦怪蟹治龊蜕杓啤４泳鲁涮畹睬绞芰Ψ治隹芍涮畹睬绞芰τ氤涮盍辖叨扔忻芮辛担壮渥罴迅叨任1.5 m，两次充填间隔时间在24 h以上，充填高度超过充填挡墙高度时，充填体初凝自立积聚到一定强度，可进行连续充填；通过类似矿山充填挡墙形式优缺点对比，确定采用钢筋混凝土挡墙封堵空场嗣后充场底部结构及分层，木挡墙封堵天井联络道；综合抗压强度、抗剪强度、抗渗透性条件等充填挡墙厚度计算方法，确定钢筋混凝土挡墙厚度为0.5 m。对充填挡墙具体结构进行设计，实现了井下采场充填挡墙构筑。生产实践证明，该充填挡墙设计方案安全合理，现场应用效果良好。
关键词:
深部开采;采场充填；首充高度；充填挡墙；构筑设计；底部结构
Abstract:
Changba Lead-Zinc Mine uses open stope with subsequent filling.In order to implement the stope filling smoothly,it is necessary to analyze and design the filling retaining wall during stope filling.Based on the force analysis of the underground filling retaining wall,it is clear that the force of the retaining wall is closely related to the height of the filling slurry.The optimal height of the initial filling is 1.5 m,and the interval between the two fillings should be more than 24 h.When the filling height exceeds the retaining wall and the filling body accumulates to a certain strength independently at the initial setting,continuous filling can be carried out.Through the comparison of the advantages and disadvantages of similar mine retaining wall,the reinforced concrete retaining wall is determined to seal the bottom structure and stratification of open stope with subsequent filling，and wooden retaining wall to block patio connection;based on the retaining wall thickness calculation methods of compressive strength,shear strength and permeability resistance,the thickness of reinforced concrete retaining wall is determined to be 0.5 m.The concrete structure of the retaining wall is designed,realizing the construction of an underground stope filling retaining wall.The production practice proves that the design scheme of the retaining wall is safe and reasonable,and the field application results are good.
Keywords:
deep mining;stope filling;initial filling height;retaining wall;construction design；bottom structure