前言在矿山生产中,如何正确处理采掘(剥)比例关系的问题,已越来越被矿山工作者所重视。所谓采掘比例关系,就是矿山回采与掘进(剥岩)之间的布局关系,也就是回采与回采准备在时间上与空间上的衔接关系。每一个矿山都依据其条件不同,有它自己的规律,正确摸清这种规律,掌握合理的比例关系,是矿山生产中一条带有根本性的工作。几年来,许多矿山的实践表明:凡是采掘(剥)比例关系协调的单位,就能有节奏 Preface In the production of mines, how to deal with the relationship between mining (stripping) the proportion of the problem, more and more mine workers have been valued. The so-called mining ratio, mining mining and mining is the relationship between the (stripping rock), that is, recovery and recovery preparation in time and space connection. Each mine is based on its different conditions, has its own laws, correctly find out the law, to grasp a reasonable proportion of relations, is a mine with a fundamental work. In recent years, the practice of many mines has shown that any unit that coordinates the proportion of mining (stripping) can have a rhythm