【摘要】：摘要：隨著我國經(jīng)濟(jì)的高速發(fā)展,地下工程機(jī)械也隨之迅猛發(fā)展,全斷面硬巖掘進(jìn)機(jī)(TBM)在各個(gè)領(lǐng)域都得到了廣泛應(yīng)用。TBM通風(fēng)除塵系統(tǒng)作為TBM關(guān)鍵后配套系統(tǒng),對隧道內(nèi)作業(yè)人員的安全、機(jī)電設(shè)備的正常運(yùn)轉(zhuǎn)、溫度與粉塵等有害物質(zhì)濃度的控制有著至關(guān)重要的作用。本文通過查閱大量的國內(nèi)外文獻(xiàn),在深入分析TBM通風(fēng)除塵系統(tǒng)原理的基礎(chǔ)上,研究了TBM通風(fēng)除塵管道不同匹配參數(shù)對隧道內(nèi)掘進(jìn)區(qū)域粉塵濃度與溫度場分布規(guī)律的影響。論文主要做了如下工作： (1)分析了TBM通風(fēng)除塵系統(tǒng)基本原理與通風(fēng)方式,深入解析了隧道內(nèi)主要產(chǎn)熱源與散熱量,總結(jié)了隧道內(nèi)掘進(jìn)過程中粉塵產(chǎn)生機(jī)理、粉塵粒徑分布與運(yùn)動(dòng)規(guī)律,在此基礎(chǔ)上對TBM通風(fēng)除塵系統(tǒng)進(jìn)行設(shè)計(jì)。 (2)采用CFD軟件建立了通風(fēng)除塵系統(tǒng)數(shù)值模型,研究了通風(fēng)除塵管道壓風(fēng)口位置、吸風(fēng)口位置、壓吸比等不同參數(shù)條件下隧道內(nèi)粉塵與溫度場分布規(guī)律,得到了TBM通風(fēng)除塵管道壓風(fēng)口位置、吸風(fēng)口位置、壓吸比最佳匹配參數(shù),為TBM通風(fēng)系統(tǒng)設(shè)計(jì)提供理論依據(jù)。 (3)利用相似理論建立了通風(fēng)除塵系統(tǒng)試驗(yàn)臺(tái),在不同壓風(fēng)口位置、不同吸風(fēng)口位置、不同壓吸比情況下,對實(shí)驗(yàn)系統(tǒng)內(nèi)部流場風(fēng)速、風(fēng)量、風(fēng)壓進(jìn)行了測試,并通過試驗(yàn)結(jié)果以及TBM施工現(xiàn)場測得的風(fēng)量、溫度數(shù)據(jù),驗(yàn)證了CFD數(shù)值模擬結(jié)果的正確性。
[Abstract]:Absrtact: with the rapid development of economy in our country, underground construction machinery has also developed rapidly. (TBM) has been widely used in every field. TBM ventilation and dust removal system is the key supporting system of TBM. It plays an important role in the safety of workers in tunnel, the normal operation of electromechanical equipment, the control of temperature and dust concentration. Based on the deep analysis of the principle of TBM ventilation and dust removal system, the influence of different matching parameters of TBM ventilation and dust removal pipeline on the distribution of dust concentration and temperature field in tunneling area is studied in this paper. The main work of this paper is as follows: (1) the basic principle and ventilation mode of TBM ventilation and dust removal system are analyzed, the main heat source and heat dissipation in tunnel are analyzed, and the mechanism of dust generation in tunneling process is summarized. Based on the distribution and movement of dust particle size, the TBM ventilation and dust removal system was designed. (2) the numerical model of ventilation and dust removal system is established by using CFD software, and the distribution law of dust and temperature field in the tunnel under different parameters such as the position of the pressure tuyere, the position of the suction port and the pressure absorption ratio are studied. The optimum matching parameters of pressure tuyere position, suction outlet position and suction ratio of TBM ventilation and dust removal pipe are obtained, which provide theoretical basis for the design of TBM ventilation system. (3) the test bench of ventilation and dust removal system is established by using similarity theory. Under the conditions of different pressure tuyere position, different suction outlet position and different pressure suction ratio, the wind velocity, air volume and wind pressure in the experimental system are measured. The correctness of the CFD numerical simulation results is verified by the test results and the measured air volume and temperature data from the TBM construction site.
【學(xué)位授予單位】：中南大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：U455.4;U453.5

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