离子型稀土原地浸矿采场滑坡特征及防控试验研究

Experimental Study on Landslide Features and Countermeasures of In-situ Leaching Stope of Ion-type Rare Earth Mines

通过对不同赋存类型的离子型稀土矿山开展现场调查,论述了原地浸矿采场滑坡的基本特征和致灾机理,结合某滑坡易发稀土矿区开采技术条件,实施了滑坡防控工业对比试验。研究表明,离子型稀土矿采场滑坡的主要破坏类型为浅层小型圆弧强风化残积层滑坡,通过调整注液参数、增加收液工程、预留保安矿体、抗滑桩人工加固等防控技术措施,采场滑坡现象得到了有效控制,所用防控措施具有投入少、产出大、施工简单、效果明显等优点,可为南方离子型稀土矿山的采场防控和安全开采提供参考,解决稀土矿山面临的安全环保等现实问题,具有良好的经济和环境效益。

The basic characteristics and disaster mechanism of mining field landslide were discussed by means of investi- gation and research on different types of ion type rare earth resources, and landslide prevention and control industrial comparative experiment was implemented on the basis of the mining technical conditions of a high - risk landslide mining area. The resuh shows that shallow, small, circular failure and highly weathered eluvium landslide is the main type of landslide on ion - type rare earth mines. Through adjustment of injection parameters, increase of collecting liquid facilities, reservation of safety deposit and artificial reinforcement of anti - slide piles, mining field landslide phenomenon was effectively controlled. The countermeasures have the advantages of less investment and high output, simple construction and obvious effect, provide a ref- erence for the prevention control and production safety of ion - type rare earth mining and solve the practical problems that rare earth mines face with, such as safety and environmental protection, which brings good economic and environmental benefits.