本文選題：長(zhǎng)距離巷道　切入點(diǎn)：高效礦井　出處：《內(nèi)蒙古科技大學(xué)》2014年碩士論文

【摘要】：隨著現(xiàn)代化高產(chǎn)高效礦井的發(fā)展，掘進(jìn)巷道的局部通風(fēng)距離越來(lái)越長(zhǎng)，長(zhǎng)距離局部通風(fēng)也越來(lái)越常見(jiàn)。長(zhǎng)距離掘進(jìn)巷道的安全供風(fēng)不但關(guān)系到煤礦高效率的生產(chǎn)接替，而且關(guān)系到井下工作人員的生命健康。因此，長(zhǎng)距離掘進(jìn)巷道通風(fēng)技術(shù)的優(yōu)化和研究，對(duì)保證礦井的安全生產(chǎn)具有較大的理論與現(xiàn)實(shí)意義。 首先，本文通過(guò)理論分析的方法研究了長(zhǎng)距離掘進(jìn)巷道局部通風(fēng)技術(shù)的通風(fēng)原理，研究各種通風(fēng)方法的影響因素及適應(yīng)條件，對(duì)現(xiàn)有的長(zhǎng)距離通風(fēng)方式的優(yōu)缺點(diǎn)進(jìn)行比較，并對(duì)適用條件進(jìn)行探討，詳細(xì)分析了智能通風(fēng)系統(tǒng)的工作原理，采用軟件模擬的方法總結(jié)污風(fēng)運(yùn)移規(guī)律得出控制污風(fēng)措施，從理論上推導(dǎo)了風(fēng)機(jī)和風(fēng)筒參數(shù)的計(jì)算公式和過(guò)程。然后針對(duì)干河煤礦2-1062巷具體情況進(jìn)行現(xiàn)場(chǎng)應(yīng)用，通過(guò)對(duì)巷道的通風(fēng)方案和通風(fēng)設(shè)備比選及制定具體的安全和優(yōu)化措施，解決干河煤礦2-1062巷2300m掘進(jìn)巷道的通風(fēng)難題。最后通過(guò)分析總結(jié)出以下結(jié)論：局部通風(fēng)距離的長(zhǎng)度是影響通風(fēng)困難程度的主要因素；不同的長(zhǎng)距離通風(fēng)方式適用條件主要與掘進(jìn)巷道的地質(zhì)條件和巷道開(kāi)采條件等因素有關(guān)；掘進(jìn)工作面需風(fēng)量在不同時(shí)期有所變化，智能通風(fēng)系統(tǒng)可以根據(jù)巷道各傳感器的瓦斯?jié)舛茸兓{(diào)整風(fēng)機(jī)轉(zhuǎn)速?gòu)亩{(diào)節(jié)風(fēng)量，可以有效的改善掘進(jìn)巷道的安全性、可靠性、節(jié)能性；通過(guò)FLUENT軟件模擬巷道內(nèi)污風(fēng)風(fēng)流運(yùn)動(dòng)變化，得出瓦斯?jié)舛仍诰蜻M(jìn)面最不穩(wěn)定，工作面和渦流區(qū)濃度最大，回風(fēng)流風(fēng)量增大時(shí)，掘進(jìn)巷道出口處瓦斯?jié)舛茸兓艽笙镲L(fēng)壓影響不明顯，風(fēng)量增加可以增加系統(tǒng)安全性，可以看出平行雙巷回風(fēng)巷道風(fēng)量加倍，安全性更高。 通過(guò)現(xiàn)場(chǎng)應(yīng)用顯示，選取的平行雙巷掘進(jìn)與智能通風(fēng)系統(tǒng)相結(jié)合的局部通風(fēng)技術(shù)可以有效的改善霍寶干河煤礦2-1062巷2300m掘進(jìn)巷道的通風(fēng)效果，縮短了通風(fēng)距離，使有效風(fēng)量率提高到82%；同時(shí)施工兩條巷道，效率增大；實(shí)現(xiàn)一巷進(jìn)風(fēng)一巷回風(fēng)的全負(fù)壓通風(fēng)，提高了安全效果。相比傳統(tǒng)通風(fēng)方式每年可以節(jié)省電力52萬(wàn)元，經(jīng)濟(jì)效果顯著。長(zhǎng)距離掘進(jìn)巷道通風(fēng)技術(shù)在霍寶干河煤礦巷道的分析應(yīng)用，在相似高產(chǎn)高效礦井具有一定的推廣價(jià)值。
[Abstract]:With the development of modern high yield and high efficiency mine, the local ventilation distance of tunneling roadway is longer and longer, and long distance local ventilation is more and more common.The safety of wind supply in long distance tunneling roadway is not only related to the high efficiency of coal mine production, but also to the life and health of underground workers.Therefore, the optimization and research of ventilation technology for long distance tunneling roadway has great theoretical and practical significance to ensure the safety of mine production.Firstly, this paper studies the ventilation principle of local ventilation technology of long distance tunneling roadway by theoretical analysis, studies the influence factors and adaptive conditions of various ventilation methods, and compares the advantages and disadvantages of existing long distance ventilation methods.The working principle of intelligent ventilation system is analyzed in detail, and the method of software simulation is used to summarize the law of pollution air movement and the measures to control pollution air are obtained. The calculation formula and process of the parameters of fan and tuyere are deduced theoretically.Then according to the concrete situation of roadway 2-1062 in Ganhe Coal Mine, the ventilation problem of 2300m roadway in 2-1062 roadway of Ganhe Coal Mine is solved by comparing the ventilation scheme of roadway and ventilation equipment and formulating concrete safety and optimization measures.Finally, the following conclusions are concluded: the length of local ventilation distance is the main factor affecting the difficulty of ventilation, the different conditions of long distance ventilation are mainly related to the geological conditions and mining conditions of roadway, and so on.The air demand of tunneling face varies in different periods. The intelligent ventilation system can adjust the fan speed according to the change of gas concentration of each sensor in the roadway, which can effectively improve the safety and reliability of the tunneling roadway.Using FLUENT software to simulate the change of air flow in roadway, it is concluded that the gas concentration is the most unstable in the driving surface, the concentration in the working face and eddy current area is the largest, and the return air flow volume increases.The change of gas concentration at the exit of tunneling roadway is not obviously affected by the wind pressure of the roadway, and the increase of the air volume can increase the safety of the system, and it can be seen that the wind volume of the return air tunnel in the parallel double roadway is doubled and the safety is higher.The field application shows that the local ventilation technology combined with parallel double roadway driving and intelligent ventilation system can effectively improve the ventilation effect of 2300m drivage roadway of 2-1062 roadway in Huobaogan River coal mine and shorten the ventilation distance.The effective air flow rate is increased to 82 and the efficiency of two roadways is increased at the same time. The safety effect is improved by realizing the full negative pressure ventilation of the return air in one entry and one lane.Compared with the traditional ventilation mode, it can save 520000 yuan of electric power every year, and the economic effect is remarkable.The analysis and application of long distance tunneling ventilation technology in the roadway of Huobaogan River coal mine has certain popularizing value in similar high yield and high efficiency mine.
【學(xué)位授予單位】：內(nèi)蒙古科技大學(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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