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我坑采矿方法为浅孔留矿法,段高30米,底部结构为有底柱和无底柱两种形式,底柱高2.6～3.0米。矿岩均稳固,矿物以铜、铅、锌为主。多年来,中段出矿一直采用短径溜井、普通漏斗和木制装车台等结构,这些出矿方式劳动强度大,维修频繁而且困难,消耗木材较多,施工条件比较复杂,在放矿时也不安全。为了解决这个问题,充分利用岩石比较稳固的自然条件,在木制装车台的基础上,成功地设计并施工了原岩装车台,现在分别在10多个矿块中广泛使用,效果良好。
I pit mining method for the shallow hole stay mining method, paragraph 30 meters high, the bottom of the structure for the bottomed and non-bottomed two forms, at the end of 2.6 to 3.0 meters high. Ore rock are solid, mineral copper, lead, zinc-based. Over the years, the middle section of the mine has been using short-path chutes, ordinary funnel and wooden loading platform and other structures, these mining methods labor-intensive maintenance frequent and difficult, more wood consumption, construction conditions are more complex, Not safe. In order to solve this problem and make full use of the relatively stable rock natural conditions, the original rock loading platform was successfully designed and constructed on the basis of the wooden loading platform. Now it is widely used in more than 10 nuggets respectively and works well .