导引在日本,尽管没有几个金属矿山采用露天开采方法,但却有许多石灰石矿采用露天开采方法。这些石灰石矿床多赋存于高山区,因此,采矿作业可能稍不同于其它国家,如北美和澳大利亚等所采用的典型露天开采方法。在把石灰石矿采完之后,在山区遗留下一个很高的最终边坡,所以,边坡不稳定成为一个严重问题,不仅从安全的角度看县严重的,从环境控制的观点看也是严重的, Guidance In Japan, there are many limestone mines used for open pit mining, although there are not many open pit mining methods. Most of these limestone deposits occur in high mountain areas, so mining operations may differ slightly from other countries such as the typical open pit mining methods used in North America and Australia. Following the mining of the limestone mines, a very high final slope is left behind in the mountains so that the instability of the slope has become a serious problem not only from the safety point of view, but also from the point of view of environmental control ,