程潮铁矿残矿合理开采方案研究

发布时间：2018-03-10 11:13

本文选题：程潮铁矿　切入点：残矿回收　出处：《武汉科技大学》2015年硕士论文　论文类型：学位论文

【摘要】：过去主要采富弃贫、采易弃难，丢弃了很多有用矿产资源，随着矿产资源的需求增加和采选技术的进步，要求我们更大限度地回收残矿资源。残矿一般所处的地质条件比较复杂，，因此在开采过程中常常会遇到很多困难，同时对残矿资源的开采是否可行也需要进行进一步的论证。本论文的研究课题主要是为解决程潮铁矿东区塌陷区残矿的安全回收问题而提出，为了模拟计算结果的准确性，主要完成了以下研究工作：第一，本文结合矿山开采技术条件，从经济、技术和安全的角度选用11项主要影响因素作为评价的指标，采用未确知测度理论对采矿方案进行优选；第二，根据矿山开采现状，建立三维数值模型，对矿区残矿进行模拟开采，分析残矿回收情况下地表变形情况对拦洪坝、防洪港和井下主采区的影响，以确定出残矿合理的安全开采范围；第三，选取典型勘探线剖面为研究对象，建立数值模拟模型，应用有限元法进行计算，分析在不同保安矿柱厚度情况下采场安全情况，以确定合理的保安矿柱厚度；第四，根据残矿回收过程中可能存在的一些安全因素，结合数值模拟的计算结果，提出残矿回收过程中的安全防治措施和建议。本论文研究结果表明，嗣后充填采矿方法为最优的开采方案，残矿21号矿体、残矿3号矿体和-250m~-160m水平残矿2号可以开采，对于-160m~-100m水平的残矿2号矿体应该严格按照开采要求来进行开采，对于残矿1号矿体建议暂时不予开采，同时开采中应留取10m厚的保安矿柱，采用未确知测度理论和数值模拟的结果与实际情况比较吻合，所得到的研究成果对类似矿山进行残矿回收具有一定的参考意义，对程潮铁矿进行残矿安全回收具有一定的指导意义。
[Abstract]:In the past, many useful mineral resources were discarded because they were mainly rich and poor, easy to exploit and difficult to abandon. With the increasing demand for mineral resources and the progress of mining and sorting technology, We are required to recover the remaining mineral resources to a greater extent. The geological conditions in which the residual minerals are generally located are more complicated, so they often encounter many difficulties in the process of mining. At the same time, it is necessary to further demonstrate whether the mining of residual ore resources is feasible. The research topic of this paper is mainly to solve the problem of safe recovery of residual ore in the eastern subsidence area of Chengchao Iron Mine, and to simulate the accuracy of the calculation results. The following research work has been completed:. First, according to the technical conditions of mining, 11 main influencing factors are selected as the evaluation index from the angle of economy, technology and safety, and the unascertained measure theory is adopted to optimize the mining scheme. According to the present situation of mining, a three-dimensional numerical model is established to simulate the mining of residual ore in mining area, and the influence of surface deformation on flood dam, flood control port and underground main mining area under the condition of residual ore recovery is analyzed. In order to determine the reasonable safe mining scope of residual ore. Thirdly, select typical exploration line section as research object, establish numerical simulation model, use finite element method to calculate, analyze the safety situation of stope under different thickness of safety pillar. In order to determine the reasonable safety pillar thickness and 4th, according to some safety factors that may exist in the process of residual ore recovery, combined with the results of numerical simulation, the safety prevention measures and suggestions in the process of residual ore recovery are put forward. The research results of this paper show that the subsequent filling mining method is the best mining plan, the residual ore body 21, the residual orebody 3 and the residual ore at -250m ~ 160m level can be mined. For the residual ore body of -160 m ~ 100 m level, the No. 2 ore body should be mined strictly in accordance with the mining requirements, the No. 1 ore body of the residual mine should not be mined for the time being, and the safety pillar with a thickness of 10 m should be reserved in the mining process. The results of unascertained measurement theory and numerical simulation are in good agreement with the actual situation. The results obtained from the study have a certain reference significance for the recovery of residual ore in similar mines. It has certain guiding significance for the safe recovery of residual ore in Chengchao Iron Mine.
【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD861.1

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