【摘要】：煤礦塵肺病多年來嚴重威脅著礦工的身體健康,造成塵肺病的主要元兇是擴散在工作場所的呼吸性粉塵。綜合機械化開采的工作面是產(chǎn)生呼吸性粉塵的重點區(qū)域之一,也是工人罹患塵肺病的重點區(qū)域。通常在工作面正常生產(chǎn),防塵措施全負荷運轉(zhuǎn)的情況下,呼吸性粉塵濃度依然高于規(guī)程的要求。所以監(jiān)控工作面全工班呼吸性粉塵接觸濃度,分析接塵危害水平,研究綜采面粉塵運移規(guī)律,對于制定綜合防塵措施具有極其重大的意義。本文檢測了陜西多個地區(qū)的煤礦綜采工作面粉塵性質(zhì)、監(jiān)測了各工種呼吸性粉塵接觸濃度,綜合分析了工作面呼吸性粉塵危害水平,對比發(fā)現(xiàn)發(fā)現(xiàn)綜采工作面粉塵危害大、工人呼吸性粉塵接觸濃度高,尤其是采煤司機、移架工等受粉塵危害嚴重。以綜采工作面為研究對象,通過DesignModeler軟件建立幾何模型;Meshing軟件劃分計算網(wǎng)格:以ANSYS軟件作為平臺,將綜采面風速以及呼塵運動分布情況進行了數(shù)值模擬。模擬結(jié)果與該區(qū)域各個工種接塵濃度一致,既驗證了實測數(shù)據(jù)的正確性,也為綜合防塵設(shè)施的優(yōu)化提供了思路。通過對模擬結(jié)果和檢測數(shù)據(jù)的分析,得出綜采工作面防塵應(yīng)該以優(yōu)化滾筒產(chǎn)塵措施和凈化產(chǎn)塵源頭為主。在對比各個綜采煤礦現(xiàn)場與接塵危害水平的基礎(chǔ)上,提出了綜采工作面防塵設(shè)施的優(yōu)化建議。
[Abstract]:Coal mine pneumoconiosis has been a serious threat to the health of miners for many years. The main cause of pneumoconiosis is the spread of respiratory dust in the workplace. The working face of comprehensive mechanized mining is one of the key areas to produce breathing dust, and it is also the key area of pneumoconiosis for workers. Usually in the working face normal production, dust prevention measures under the condition of full load operation, respiratory dust concentration is still higher than the requirements of the regulations. Therefore, it is of great significance to monitor the concentration of respiratory dust contact in working face, to analyze the level of dust exposure and to study the law of dust migration in fully mechanized coal face, which is of great significance for the establishment of comprehensive dust prevention measures. In this paper, the dust properties of fully mechanized coal mining face in many areas of Shaanxi province are tested, the contact concentration of respiratory dust in various types of work is monitored, the hazard level of respiratory dust in working face is analyzed synthetically, and the results show that the dust hazard in fully mechanized coal mining face is great. Workers respiratory dust contact concentration is high, especially coal mining drivers, rack workers and other serious dust hazards. Taking the fully mechanized mining face as the research object, the geometric model is established by DesignModeler software, the Meshing software is used to divide the calculation grid, and the distribution of wind speed and dust movement of fully mechanized coal face is numerically simulated on the platform of ANSYS software. The simulation results are consistent with the concentration of various types of work in this area, which not only verifies the correctness of the measured data, but also provides a train of thought for the optimization of the comprehensive dustproof facilities. Based on the analysis of simulation results and test data, it is concluded that the main measures for dust prevention in fully mechanized coal mining face should be to optimize the measures of producing dust in rollers and to purify the source of dust production. On the basis of comparing the hazard level of the field and dust exposure in each fully mechanized coal mine, the paper puts forward some suggestions for optimizing the dust prevention facilities in the fully mechanized coal face.
【學位授予單位】：西安科技大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD714.4;TD78

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本文編號：2356125