基于通风网络模拟的金山店铁矿东区通风方式选择

发布时间：2018-04-23 00:17

本文选题：金山店铁矿 + 多中段通风　；参考：《武汉科技大学》2013年硕士论文

【摘要】：金山店铁矿由于张福山村搬迁滞后，，东区下降速度明显低于西区，形成了-340m中段、-410m中段同时开采局面，造成整体通风系统回风混乱，东、西区难以形成安全有效通风网络。依据金山店铁矿矿区现有通风系统分布及中段平面布置状况，基于ANSYS—CFX流体模拟软件，提出了以负压截面代替风机出口处负压的建模方法，构建了矿区整体通风模拟网络三维模型。系统模拟了现有通风网络的风流流线分布及风流流动方向，辨识出多中段开采时-410m中段污风对-340m中段的风流污染以及矿区存在局部通风不良区域等问题。为寻求多中段开采通风优化系统，选取金山店铁矿老副井-340m中段回风、老副井-270m中段回风、新回风井-340m中段回风、新回风井-270m中段回风四种可行方案，模拟分析了各方案的进风井风速及出风口负压，以满足风量要求和风机能耗最小为原则，确定了新回风井-270m中段回风为最优方案。利用正交试验分析方法，选取中央溜破系统风机负压、西回风井风机负压、东区新回风井风机负压为研究对象，分别对老主井、西回风井、新回风井出口风速进行了三因素三水平显著性方差分析，建立了选择风机负压参数调节风量分配的风机负压—出口风速函数，实现了通风系统风量、风压优化分配。利用ANSYS—CFX流体模拟软件，以负压截面代替风机出口处风压技术建立的矿区整体通风系统模拟模型，实现了通风系统存在问题辨识，方案优化，通风系统参数选择，克服了矿山网络模拟不能实现矿山整体模拟的不足，具有较强的适用性。
[Abstract]:Due to the lagging of the relocation of the Zhang Fushan Village, the decline rate of the east area is obviously lower than that in the west area. The middle section of the -340m is formed, and the middle section of -410m is simultaneously mined, resulting in the chaos of the whole ventilation system, and the safe and effective ventilation network is difficult to form in the East and west area. Based on the ANSYS - CFX fluid simulation software, the modeling method of negative pressure cross section instead of the negative pressure at the outlet of the fan is put forward. A three-dimensional model of the whole ventilation simulation network in the mining area is constructed. The flow line distribution and the flow direction of the existing ventilation network are systematically simulated and the wind flow in the middle section of the -410m section of the middle section of the -340m is identified. In order to find the ventilation optimization system in the middle section of the multi middle section, select the return air of the -340m middle section of the old auxiliary shaft of Jinshan iron mine, the return air in the middle -270m of the old auxiliary shaft, the back air in the -340m middle section of the new return air well and the return air of the new return air well, -270m middle section, and simulate and analyze the wind speed of the air wells in each scheme and the analysis of the wind speed in each scheme. In order to meet the requirement of air volume and the minimum energy consumption of the fan, the optimum scheme for the return air in the -270m middle section of the new return air well is determined. By using the orthogonal test analysis method, the negative pressure of the fan in the central slip system, the negative pressure of the West return air blower and the negative pressure of the new return air fan in the east area are selected as the research object, and the old main well, the West return air well and the new return are respectively returned. The wind shaft outlet wind speed has been analyzed by three factors and three level significant variance analysis. The negative pressure outlet wind speed function of fan is set up to adjust the air flow distribution of the fan negative pressure parameters, and the ventilation system air volume and the wind pressure are optimized.
Using the ANSYS - CFX fluid simulation software, the whole ventilation system simulation model of the mining area is established by the negative pressure section instead of the wind pressure technology at the outlet of the fan. The problem identification of the ventilation system, the optimization of the scheme, the selection of the ventilation system parameters have been realized, and the shortage of the mine network simulation can not be realized in the whole simulation of the mine is overcome, and it has strong applicability.

【学位授予单位】：武汉科技大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD724

【参考文献】