上向水平分层充填盘区开采系统动态可靠性研究

发布时间：2018-05-30 19:41

本文选题：盘区开采 + 系统动态可靠性　；参考：《南华大学》2015年硕士论文

【摘要】：为分析盘区开采过程采场稳定性的动态变化规律,建立了基于MCS-BP-GTS方法的动态可靠性分析方法,以云南省某铅锌矿为研究对象,开展了应用研究,主要研究内容如下:(1)基于MCS-BP-GTS方法的动态可靠度计算方法研究。采用Midas/GTS有限元软件建立了矿山开采模型,根据矿山矿岩影响因素的分布特征进行MCS(Monte-Carlo)抽样与计算,应用MATLAB平台的BP人工神经网络进行大量的数据处理,以满足可靠度计算对数据量的要求,从而建立基于MCS-BP-GTS方法的系统动态可靠性研究方法。(2)基于MCS-BP-GTS的上向水平分层充填采矿法矿房动态可靠性研究。根据上向水平分层充填采矿法开采过程中矿房的失稳现象及有限元模拟结果,提取矿房开采过程的特征点作为可靠度指标计算对象,研究矿房可靠度随矿体开采步长的动态变化规律,并依据动态可靠度优化矿房设计参数。(3)基于MCS-BP-GTS的上向水平分层充填采矿法矿柱动态可靠性研究。根据上向水平分层充填采矿法开采过程中的矿柱失稳现象及有限元模拟结果,提取开采过程矿柱的特征点作为可靠度指标计算对象,研究矿柱可靠度随矿体开采步长的动态变化规律,并依据动态可靠度优化矿柱设计参数。(4)基于MCS-BP-GTS方法的盘区系统动态可靠性研究。根据盘区开采过程中矿房和矿柱失稳规律,分析盘区系统中矿房和矿柱的串并联关系,建立基于MCS-BP-GTS方法的盘区系统动态可靠度计算方法。并依据盘区系统动态可靠度优化盘区设计参数和盘区开采顺序。本文建立的基于MCS-BP-GTS方法的盘区系统动态可靠度计算方法,较好地解决了盘区开采稳定性分析的复杂系统计算难以实现的问题,并依据盘区系统动态可靠度变化规律,优化了云南某铅锌矿盘区设计参数和盘区开采顺序。本课题的研究有一定的理论意义和实用价值。
[Abstract]:In order to analyze the dynamic variation rule of stope stability in the mining process, a dynamic reliability analysis method based on MCS-BP-GTS method was established, and a lead-zinc mine in Yunnan Province was used as the research object. The main contents are as follows: (1) dynamic reliability calculation method based on MCS-BP-GTS method. The mining model is established by using Midas/GTS finite element software. According to the distribution characteristics of influencing factors of mine rock, the sampling and calculation of MCSM Monte-Carlov are carried out, and a large number of data are processed by BP artificial neural network based on MATLAB platform. In order to meet the requirement of reliability calculation, the dynamic reliability research method of system dynamic reliability based on MCS-BP-GTS method is established. The dynamic reliability research of mine house with upward horizontal stratified filling mining method based on MCS-BP-GTS is established. According to the instability of mine house and the result of finite element simulation in the mining process of upward horizontal stratified filling mining, the characteristic points of mining process of mine house are extracted as the calculation object of reliability index. This paper studies the dynamic variation law of mine house reliability with the mining step of ore body, and optimizes the design parameter of mine house according to dynamic reliability. (3) based on MCS-BP-GTS, the research on dynamic reliability of pillar in upward horizontal stratified filling mining method is carried out. According to the instability phenomenon of pillar and the result of finite element simulation in the mining process of upward horizontal stratified filling mining, the characteristic points of pillar in mining process are extracted as the calculation object of reliability index. The dynamic variation of pillar reliability with the mining step of ore body is studied, and the dynamic reliability of disk system based on MCS-BP-GTS method is optimized according to the dynamic reliability of pillar design parameter. According to the instability law of mine house and pillar in the process of mining, the series-parallel relationship between mine house and pillar in disk system is analyzed, and the dynamic reliability calculation method of disk system based on MCS-BP-GTS method is established. According to the dynamic reliability of the disk system, the design parameters and mining sequence are optimized. The dynamic reliability calculation method of disk system based on MCS-BP-GTS method is established in this paper, which solves the problem that the complex system calculation of disk mining stability analysis is difficult to realize, and according to the variation rule of dynamic reliability of disk system. The design parameters and mining sequence of a lead-zinc mine in Yunnan are optimized. The research of this subject has certain theoretical significance and practical value.
【学位授予单位】：南华大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TD853.34

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