基于熵权-理想点的采矿方法优选及采场稳定性研究

发布时间：2018-02-27 07:53

本文关键词： 采矿方法优选采场稳定性数值模拟塑性区工业试验　出处：《矿冶工程》2017年03期 　论文类型：期刊论文

【摘要】：为解决盛大铁矿开采技术难题,在实现矿山高效安全经济开采的前提下,提出一种熵权-理想点综合评判指标体系模型,对矿山初选的5种采矿方案进行计算。首先利用熵权理论确定影响采矿方法的各评价指标的熵权系数,然后结合逼近理想解的排序法原理建立熵权-理想点综合评价指标体系模型,从而计算出各方案基于评判指标的贴近度。结果显示,5种初选方案的贴近度分别为70.3%,44.2%,64.8%,61.1%,46.3%,第一种方案即分段接力退采分段充填采矿法为最优。同时对采场进行数值模拟,对运用优选出的采矿方法时采场的应力、位移以及塑性区进行计算,并将计算结果与现场实测数据进行对比,得出采场岩体在充填后,应力位移增加较缓慢。并在盛大铁矿矿区-175~-162.5 m分段进行工业试验,取得显著经济效益,具有重要工程实际意义。
[Abstract]:In order to solve the technical problem of mining in Shanda Iron Mine, a comprehensive evaluation index system model of entropy weight and ideal point is put forward under the premise of efficient, safe and economical mining. First, the entropy weight coefficient of each evaluation index affecting mining method is determined by entropy weight theory. Then combined with the ranking principle of approximate ideal solution, the model of entropy weight and ideal point comprehensive evaluation index system is established. The results show that the closeness degree of the five primary selection schemes is 70.34.2and 64.8and 61.1and 46.3.The first scheme, the piecewise stoping method, is the best. At the same time, the numerical simulation of the stope is carried out. The stress, displacement and plastic zone of the stope are calculated when the optimum mining method is used, and the calculated results are compared with the field measured data, and the rock mass in the stope after filling is obtained. The increase of stress and displacement is slow, and the industrial test is carried out in -175 ~ 162.5 m section of Shanda Iron Mine, which has significant economic benefits and is of great practical significance.
【作者单位】：中南大学资源与安全工程学院;
【基金】：国家自然科学基金(51674288,41372278)
【分类号】：TD861.1

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