摘要
某铁矿出于安全考虑,前期的崩落法无法继续使用,深部矿体的回采方法必须及时变更为充填法。为了确保充填法采矿安全、高效,根据矿山实际矿体、围岩稳定性特征,提出4个回采方法,经过模糊综合评判选择分段凿岩阶段空场嗣后充填法。在此基础上针对如何选择采场结构参数,才能确保回采过程采场的稳定,采用数值模拟对深部矿体采场结构参数进行方案优化,在采场长度为100m,预留10m间柱的情况下,模拟了采场宽度13m、15m、17m3个方案,采场的最优宽度确定为15m。
In view of the safety,the previous caving method in an iron ore can not continue to be used,and the recovery method for deep orebody must be changed in time. In order to ensure the safety and efficiency of backfill mining,according to the actual stability characteristics of orebody and surrounding rock,four mining methods were put forward,and the stage sub level rock drilling stoping method with subsequent backfilling is selected by fuzzy comprehensive evaluation. On this basis, aiming at how to select stope structural parameters to ensure the stability of stope in mining process,numerical simulation is used to optimize the stope structural parameters of deep orebody. Under the condition of stope length 100 m and pillars re served at 10 m,three schemes with stope width of 13 m,15 m and 17 m are simulated,and the optimal stope width is deter mined to be 15 m.
作者
陈尚波
刘波
Chen Shangbo;Liu Bo(Jiangxi Province Security Production Science and Technology Research Center,Nanchang 330103,China;Jiangxi Qiantong Mining Consulting Co.,Ltd.,Ganzhou 341000,China)
出处
《金属矿山》
CAS
北大核心
2019年第6期72-76,共5页
Metal Mine
关键词
充填采矿法
模糊综合评判
采场安全
结构参数
数值模拟
Backfill stoping method
Fuzzy comprehensive evaluation
Stope safety
Structural parameters
Numerical simulation
