论文部分内容阅读
对尼基托夫斯基矿山的溜井磨损情况进行的观察证明,即使在均质性岩石中,井壁沿高度的破坏也是不均匀的。溜井上段遭受的破坏最甚。十分明显,溜井上部的破坏不是由于井壁受矿石摩擦引起,而是放矿时受大块的冲击所造成。况且溜井上部通常是装不满的。所观察的溜井开凿在硬度系数为f=8—10的砂岩中,溜放的矿石也是砂岩,最大块度为350×350毫米。通过材料运动特性的模拟试验和对溜井磨损情况所进行的观察确定,矿石的运动是不规则的,据观察,大块矿石对井壁的冲击发生在
Observations of the wear of the run-of-mine at the Niquitowski mine have shown that even in homogenous rocks, the failure of the borehole along the height is not uniform. The upper section of the slide suffered the most damage. Obviously, the damage to the upper part of the slip well was not caused by the friction of the well wall by the ore, but by the massive impact during the ore discharge. Moreover, the upper part of the slide is usually not satisfied. The observed chutes are excavated in sandstone with hardness coefficient f = 8-10. The slipped ore is also sandstone with a maximum of 350 × 350 mm. Through the simulation test of the material’s motion characteristics and the observation of the wear of the slip well, the movement of the ore is irregular. It is observed that the impact of the large ore on the well wall occurs at