论文部分内容阅读
本文叙述的是有关乔卡达尔肯(Choka Dulkan)地区矿体开采岩层性态的观测情况。由于非胶结水砂充填料既不允许采场宽度加大也不允许二次回收矿柱,所以矿石回收率只达60％左右。采场拉底引起了应力的高度集中。尽管回采的进展和岩层条件的改善,但采场采完以前,应力集中更加严重。每一采场采完后,间柱和顶柱有时继续受其他应力的影响而发生形变。
This article describes the observations of rock formations in the ore body of Choka Dulkan. Because of non-cementing water sand filling material does not allow the stope to increase the width also does not allow secondary recovery pillar, so the ore recovery rate of only about 60%. Pull the bottom of the yard caused a high degree of stress concentration. In spite of the progress of mining and the improvement of rock conditions, the stress concentration is even more serious before the stope is completed. After the completion of each stope, between the column and the top column sometimes under the influence of other stresses and deformation.