基于冲蚀磨损理论的溜井井壁破损特性理论研究

发布时间：2018-06-17 15:05

本文选题：采矿工程 + 冲蚀磨损　；参考：《岩石力学与工程学报》2017年S2期

【摘要】：矿石从溜槽进入溜井后会对井壁产生冲击,确定井壁冲击部位并选择合适的保护方法对于延长溜井的使用寿命有着重要作用。基于冲蚀磨损理论建立矿石冲击下井壁破损的计算模型,结合Hertz接触理论确定体积损失的计算方法。根据溜槽溜井结构,建立矿石的运动模型。以华新钻沟石灰岩矿山为例,分析溜井壁的破损特性。研究结果表明:矿石与井壁发生3次碰撞后落入矿仓,溜井上部围岩的破坏范围小,破损程度大,溜井下部围岩的破坏范围大,破损程度小。从安全和经济性出发,提出分类防护措施。研究结果与实际情况符合较好,所提方法适用于形态平直的井壁,有助于新建溜井的防护设计。
[Abstract]:The ore from the chute into the well will impact on the wellbore. It is important to determine the impact site of the shaft wall and choose the appropriate protection method for prolonging the service life of the slide shaft. Based on the theory of erosion and wear, the calculation model of shaft wall damage under ore impact is established, and the calculation method of volume loss is determined by combining with Hertz contact theory. According to the structure of chute, the movement model of ore is established. Taking Huaxin Shuanggou limestone mine as an example, the damage characteristics of the slip shaft wall are analyzed. The results show that the ore collides with the shaft wall three times and then falls into the mine bunker. The upper wall rock of the slide shaft has a small damage range and the damage degree is large. The damage range of the surrounding rock in the slip shaft is large and the damage degree is small. In view of safety and economy, classified protection measures are put forward. The research results are in good agreement with the actual situation. The proposed method is suitable for the straight shaft lining and is helpful to the protection design of the newly built slide shaft.
【作者单位】：武汉理工大学资源与环境工程学院;武汉理工大学矿物资源加工与环境湖北省重点实验室;武汉理工大学图书馆;
【基金】：中央高校基本科研业务费资助项目(2017IVA046,2017-zy-071) 贵州省科技支撑计划项目(20172803)~~
【分类号】：TD521.1

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