發(fā)布時(shí)間：2019-05-20 10:08

【摘要】：摘要：為了保證礦井安全生產(chǎn),改善井下工作人員的勞動(dòng)條件,降低礦難的發(fā)生率,需要確保礦井通風(fēng)系統(tǒng)的穩(wěn)定性。本文基于Ventsim通風(fēng)三維仿真系統(tǒng),對(duì)礦井通風(fēng)系統(tǒng)參數(shù)的穩(wěn)定性采用單因素分析方法進(jìn)行研究。主要研究?jī)?nèi)容和成果有： (1)分析了國(guó)內(nèi)外近20年來(lái)礦井通風(fēng)類軟件的發(fā)展概況,并結(jié)合金屬礦通風(fēng)系統(tǒng)的實(shí)際情況,選擇了適合該礦的通風(fēng)系統(tǒng)軟件——Ventsim三維通風(fēng)仿真系統(tǒng)軟件。 (2)運(yùn)用Ventsim軟件構(gòu)建了某金屬礦通風(fēng)系統(tǒng)三維模型,并確定了特征分支巷道。采用單因素分析法,通過(guò)改變某一特征分支巷道的風(fēng)阻值,模擬其它分支巷道的參數(shù)變化情況,得出了分支風(fēng)量與風(fēng)機(jī)工況點(diǎn)對(duì)礦井通風(fēng)系統(tǒng)穩(wěn)定性的影響。 (3)通過(guò)改變擴(kuò)散器出口的直徑大小,模擬主風(fēng)機(jī)的全壓效率與特征分支巷道的參數(shù)變化情況,驗(yàn)證了擴(kuò)散器出口直徑與特征分支參數(shù)之間的耦合關(guān)系。因此,選擇合適大小的風(fēng)機(jī)擴(kuò)散器出口直徑,可以最大限度的回收出口動(dòng)能。 (4)運(yùn)用礦井通風(fēng)網(wǎng)絡(luò)及風(fēng)量調(diào)節(jié)理論,對(duì)通風(fēng)系統(tǒng)參數(shù)之間的相互關(guān)系進(jìn)行分析研究,提出合理的建議和以后發(fā)展的趨勢(shì)。圖42幅,表14個(gè),參考文獻(xiàn)75篇
[Abstract]:Abstract: in order to ensure the safety of mine production, improve the working conditions of underground workers and reduce the incidence of mine accidents, it is necessary to ensure the stability of mine ventilation system. In this paper, based on Ventsim ventilation three-dimensional simulation system, the stability of mine ventilation system parameters is studied by single factor analysis method. The main research contents and achievements are as follows: (1) the development of mine ventilation software at home and abroad in the past 20 years is analyzed, and combined with the actual situation of metal mine ventilation system, Ventsim 3D ventilation simulation system software, which is suitable for the mine, is selected. (2) the three-dimensional model of ventilation system in a metal mine is constructed by using Ventsim software, and the characteristic branch roadway is determined. The single factor analysis method is used to simulate the parameter change of other branch roadway by changing the wind resistance value of one characteristic branch roadway, and the influence of branch air volume and fan working condition point on the stability of mine ventilation system is obtained. (3) by changing the diameter of diffuser outlet and simulating the change of total pressure efficiency of main fan and the parameters of characteristic branch roadway, the coupling relationship between diffuser outlet diameter and characteristic branch parameters is verified. Therefore, the outlet kinetic energy can be recovered as much as possible by selecting the outlet diameter of fan diffuser of suitable size. (4) based on the theory of mine ventilation network and air volume regulation, the relationship between ventilation system parameters is analyzed and studied, and reasonable suggestions and future development trends are put forward. Figure 42, table 14, references 75
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TD724

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