金川镍矿的下向胶结充填采矿法及其围岩控制

Top-slicing with Cement Filling Method and Control of Surrounding Rock in Jinchuan Nickle Mine

金川镍矿由于地质构造运动作用,矿岩被挤压得十分破碎,通过二十多年的生产实践和科学试验,采用下向分层胶结充填采矿法是一种安全、高效、高质量回采的最好方法. 金川镍矿的工程地质分成六个岩带,并进行了岩体力学参数试验工作,针对井巷围岩掘进中变形特点,根据岩体稳定分析,采用不同支护形式和二次联合支护方法。由于采用下向倾斜分层胶结充填法及机械化下向胶结充填采矿法,围岩移动是由小—大—小的规律,因而能在厚大富矿体内进行全面、安全的开采,采用密实充填就可有效的控制围岩移动。

For fractured ore body in Jinchuan Niekle Mine, Top-slicing with Cement Filling method is safety and effective. In order to determine mechanical parameters of rock mass. some experiments were carried out for six ore zones.According to the result of stability analysis of rock mass, different support methods were used. Due to the application of the method deformation of surrounding rock can be controlled effectively