论文部分内容阅读
某矿系含钨石英脉矿床,由数条厚度等的主要矿脉所构成。根据矿床地質构造情况和圍岩稳定程度,1954年,选用了沿走向开采的淺孔崩矿的留矿法。通过几年来的工作实踐,基本上是合理的。但在15号矿脉西部局部地区,因受构造应力的影响,矿脉下部傾角改变,上部陡而下部緩。根据这种客观情况,如仍采用一般普通留矿法进行回采,势必造成放矿困难,因此,將所用的普通留矿法,作了某些修改,即应用間断留矿法开采。
A mineralized tungsten quartz vein deposit, consisting of several major veins such as thickness. According to the geological structure of the deposit and the stability of the surrounding rock, in 1954, the mining method of shallow-hole collapsible ore along the strike direction was selected. After several years of work practice, basically is reasonable. However, due to the influence of tectonic stress in the western part of No.15 ore vein, the inclination of the lower part of the ore vein changes, and the upper part is steep and the lower part is gentle. According to this objective situation, if ordinary mining methods are still used for recovery, it is bound to cause difficulties in draining the ore. Therefore, some common modifications to the conventional method of retaining ore are applied, that is, the application of intermittent residual mining method.