磷矿山通风系统优化与应用

发布时间：2018-08-14 12:28

【摘要】：论文以贵州某磷矿一、某磷矿二磷矿为工程背景,通过对多个磷矿山井下通风系统调查分析,针对其通风存在的通风阻力大、动力偏差大、与产能匹配性差、风机效率低下等影响矿井通风系统稳定性问题,在现场大量数据采集与资料整理的基础上,通过3D VS矿井通风三维仿真模拟试验,得出影响其矿井通风系统稳定性的相关指标。基于模糊数学与层次分析法理论,建立矿井通风模糊评价数学模型,提出了评价矿井通风系统稳定性状况的评判标准。在此基础上,给出矿山实际工程中进行通风优化的具体技术措施和建议。论文研究主要内容如下:(1)通过对井下通风网络、井筒的位置、风流方向、风机的安装情况、作业点风质及数量等调查测定,掌握了磷矿山井下通风现状;运用3DVS矿井通风三维模拟软件对井下通风情况进行模拟,使模拟结果与井下实测结果基本符合,为下一步技术措施优化提供可靠性。(2)论文对多个磷矿山通风系统进行了全面了解和现场测定,评价分析了磷矿山通风系统。结合多个矿山通风系统存在的问题,进一步分析得出磷矿井通风系统存在风机与风网不匹配、局部风量调节困难、通风阻力大等共性问题,使磷矿山通风系统优化具有针对性。(3)论文基于模糊数学法和层次分析法理论,建立了模糊数学综合评价模型,并综合确定了各级评价因素权重,构造模糊数学综合评价判断矩阵;通过对拟定的优化措施进行技术经济比较分析,初步确定了优化备选的优化措施,运用模糊数学评价法对备选措施进行综合评价,确定了最优实施措施。(4)论文对最终优选的技术措施通风效果进行比较分析,其中某磷矿一优选的技术措施有效的解决了1020m、1035m深部进风,增设的空气幕可随作业面点变更而移动位置,灵活性强;某磷矿二优选的技术措施解决了盘区通风问题,各分层风量调节效果较好。说明通过增设矿用空气幕可以有效地解决磷矿山通风阻力大,局部风量调节困难等问题。
[Abstract]:Based on the engineering background of No. 1 and No. 2 phosphate rock in a certain phosphate mine in Guizhou province, through the investigation and analysis of underground ventilation system in several phosphate mines, the paper aims at the existence of large ventilation resistance, large dynamic deviation and poor matching with productivity. The low efficiency of fan affects the stability of mine ventilation system. On the basis of a large amount of data collection and data collation on the spot, through 3D vs mine ventilation 3D simulation test, the relevant indexes affecting the stability of mine ventilation system are obtained. Based on the theory of fuzzy mathematics and analytic hierarchy process (AHP), the mathematical model of mine ventilation fuzzy evaluation is established, and the evaluation criteria for the stability of mine ventilation system are put forward. On this basis, the concrete technical measures and suggestions for ventilation optimization in practical mine engineering are given. The main contents of this paper are as follows: (1) through the investigation and determination of underground ventilation network, wellbore location, air flow direction, installation of fan, air quality and quantity of operating points, the present situation of downhole ventilation in phosphate mine has been grasped. In this paper, 3DVS software is used to simulate the underground ventilation, and the simulation results are in good agreement with the measured results. It provides reliability for further technical measures optimization. (2) the paper has carried on the comprehensive understanding and the spot determination to the multiple phosphate rock mountain ventilation system, has evaluated and analyzed the phosphate rock mountain ventilation system. Combined with the problems existing in many mine ventilation systems, it is further analyzed that there are some common problems in the ventilation system of phosphorus mine, such as the mismatch between fan and air network, the difficulty of local air volume regulation, and the large ventilation resistance, etc. The optimization of ventilation system of phosphate rock mountain is targeted. (3) based on the fuzzy mathematics method and the analytic hierarchy process theory, the comprehensive evaluation model of fuzzy mathematics is established, and the weight of evaluation factors at all levels is determined synthetically. The comprehensive evaluation judgment matrix of fuzzy mathematics is constructed, the optimization measures are preliminarily determined by comparing and analyzing the technical and economic aspects of the proposed optimization measures, and the comprehensive evaluation of the alternative measures is carried out by using the fuzzy mathematics evaluation method. The optimal implementation measures are determined. (4) the paper compares and analyzes the ventilation effect of the final optimal technical measures, among which the technical measures of one phosphate mine-optimal separation effectively solve the 1020mg 1035m deep air intake. The additional air curtain can move the position with the change of the working surface, and the flexibility is strong, and the technical measures of the secondary optimum separation of a phosphate mine solve the ventilation problem in the disk area, and the effect of the air volume regulation in each layer is better. It is shown that the problems of large ventilation resistance and difficulty in adjusting local air volume can be effectively solved by adding mine air curtain.
【学位授予单位】：江西理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD724

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