盘区机械化分条—上向分层充填联合采矿法采场参数优化

发布时间：2018-03-13 11:16

本文选题：盘区机械化分条-上向分层充填联合采矿法　切入点：采场参数　出处：《昆明理工大学》2017年硕士论文　论文类型：学位论文

【摘要】：大红山西矿段设计采用点柱式上向水平分层充填采矿方法进行开采,对于点柱式充填,点柱可以有效维护顶板安全,保证了采矿过程的安全进行。但是,点柱作为永久损失,导致损失率高以及点柱的留设对施工要求较高。因此既要满足安全生产又要降低其损失率和贫化率成为了矿山难题。鉴于此问题,本文对点柱式上向水平分层充填采矿方法进行改进,提出了盘区机械化分条-上向分层充填联合采矿法,该方法在走向上将矿体划分为盘区进行开采,沿倾向再划分竖分条,分为1分条和2分条,分条宽度的不同不仅影响了采场的稳定性,同时也影响着充填成本,因此科学合理的设计两个分条宽度,对保证采场作业安全和降低充填成本是至关重要的。本文采用FLAC 3D模拟软件,以大红山西矿段开采现状为工程背景,对盘区机械化分条-上向分层充填联合采矿法采场参数进行优化,取得了如下研究成果:(1)提出盘区机械化分条-上向分层充填联合采矿法,解决了点柱式上向水平分层充填采矿方法需留设永久矿柱的难题;(2)应用FLAC 3D模拟软件,模拟1分条和2分条宽度分别为6m和6m、8m和6m、6m和8m、8m和8m条件下,胶结充填体和矿柱在整个开采过程中的应力、位移和塑性区变化规律,得出采用各方案进行开采时,采场始终处于稳定状态,每个方案均能够满足开采的强度要求;(3)结合各方案充填成本进行综合比较,得出盘区机械化分条-上向分层充填联合采矿法最优采场参数为:1分条宽6m,2分条宽8m;(4)与点柱式上向水平分层充填采矿方法的工业指标对比表明,盘区机械化分条-上向分层充填联合采矿法在满足安全生产要求的基础上,提高了矿石回收率,经济效益较优。本文研究意义:确保采矿安全及矿山持续生产的前提下,一方面提高了矿石回收率和经济效益,另一方面可以保证矿山安全、稳定发展,对类似矿山开采具有较为重要的工程指导意义。
[Abstract]:The design of Shanxi mine section of Datong adopts the point pillar upward horizontal stratified filling mining method. For the point column filling, the point pillar can effectively maintain the roof safety and ensure the safety of the mining process. However, the point column is taken as the permanent loss. As a result of the high loss rate and the high requirement for the construction of the point column, it is difficult for the mine to meet the safety of production and reduce the loss rate and dilution rate. In this paper, the point column upward horizontal stratified filling mining method is improved, and the combined mining method of mechanized strip separation and upward stratified filling in the disc area is put forward. The mining method divides the orebody into the disk area on the strike, and then divides the vertical strip along the tendency. Divided into 1 and 2, the difference in width not only affects the stope stability, but also affects the filling cost, so the scientific and reasonable design of the two split-width, It is very important to ensure the safety of stope operation and reduce the filling cost. This paper adopts FLAC 3D simulation software, taking the mining status quo of Shanxi section of Dahong as the engineering background. This paper optimizes the stope parameters of mechanized strip separation and upward stratified filling combined mining method in the disk area, and obtains the following research results: 1) the combined mining method of mechanized strip separation and upward stratified filling in the disk area is put forward. This paper solves the problem that the permanent pillar is needed to be set up in the method of point column horizontal stratified filling mining. Using FLAC 3D simulation software, the paper simulates the conditions that the width of 1 slice and 2 slice are 6 m and 6 m and 6 m and 6 m and 8 m and 8 m, respectively, under the condition of 6 m and 6 m and 8 m and 8 m, respectively, in which the width of 1 and 2 splits is 6 m and 6 m, respectively. The variation of stress, displacement and plastic zone of cemented filling body and pillar in the whole mining process, it is concluded that the stope is always in a stable state when each scheme is used for mining. Each scheme can meet the intensity requirement of mining. The results show that the optimum stope parameters of the combined mining method of mechanized strip separation and upward stratification and filling in the disc area are as follows: (1) the width of the split strip is 6 m, the width of the second strip is 8 m / 4), and the comparison of the industrial indexes of the mining method with the point column method of upward horizontal stratification and filling shows that the optimum mining parameters are as follows:. On the basis of satisfying the requirements of safe production, the combined mining method of mechanized strip separation and upward stratification and filling in the disk area improves the ore recovery rate and the economic benefit is better. The research significance of this paper is to ensure the safety of the mining and the continuous production of the mine. On the one hand, the ore recovery rate and economic benefit are improved, on the other hand, the safety and stable development of the mine can be guaranteed, which has important engineering guiding significance for similar mining.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD853.34

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