用菱形矿房充填法从露天开采向地下开采过渡

Transition From Open Pit to Underground Mining Through Diamond Room Filling System

矿床开采中露天与地下的联合开采法得到了广泛的应用。但在露天与地下开采之间通常要留很厚的保安（隔离）矿柱，而这种矿柱的回采在技术上有很多困难，尤其是在复杂的矿山技术条件下更为困难。本文介绍了一种用菱形矿房分段崩矿和嗣后充填的采矿方法，从露天开采直接转入地下开采，使露天和地下形成人工保安矿柱。该回采工艺既可用于回采稳固矿石，也可用于回采不稳固的矿石。

The combined oPen pit and underground mining system has found wide application in depeit mining. However,very thick safety pillars are usually required between the open pit and the underground stopes. Technologically, it poses great difficulty in mining these pillars,especially when the mining conditions are very complicated. In this paper, an innovative mining system is presented which consists of diamond room sublevel stoping and backfilling. Using this system,artificial safety pillars are constructed between the open pit and the underground stopes so that transition to underground mining can take place directly. This system can be used to mine either stable or unstable oretalies.