本文關鍵詞： 獨頭巷道 脈動式通風 脈動周期 占空比 通風效果 節(jié)約能源　出處：《昆明理工大學》2013年碩士論文　論文類型：學位論文

【摘要】：在巷道掘進和回采時期,通常要對獨頭巷道進行掘進,掘進過程中需進行大量爆破作業(yè),爆破能加快生產、提高生產效率,同時也給獨頭巷道掘進工作帶來許多危害,危害不僅來源于爆破后產生的有毒有害氣體等的產生,還包括沖擊波、爆破飛石等直接或間接的給采掘工作帶來的危害,其中對通風用風筒設備的危害較大,沖擊波和爆破飛石有可能損壞爆區(qū)附近的通風設備,倘若通風設備被損壞,將在安全和生產方面對企業(yè)產生威脅。 地下獨頭巷道掘進工作中,爆破煙塵的高效排出一直是一個難題,論文針對局部通風風筒不能近距離接近爆破工作面,從而導致通風排煙效率低的問題,提出采用“脈動通風”的方式,提高通風排煙效率。本人在實驗室建立模擬試驗,運用脈動式給風方式通風,該給風方法實則就是通過控制變化風機的風速,使風機連續(xù)通風一段時間后關閉,關閉一定時間后又再次開啟,讓巷道中風流的能量產生失衡,從而引起流體微團產生擾動,使煙霧與周圍空氣混合,并在風機停止供風時,使煙霧依靠自身的擴散作用移動到風流有效區(qū)內,便于風機再次開啟時的通風排煙。 本文通過在實驗室建立模型巷道進行試驗,分析和對比恒定通風和脈動通風的作用效果,得到脈動通風條件下,各參數(shù)共同作用下的較優(yōu)脈動周期和占空比。并通過實驗室模擬試驗及試驗數(shù)據(jù)分析,得出了“脈動通風”的有效性結論,同時脈動式通風方式還能在一定程度上提高風機效率、減少通風能耗,為企業(yè)提高生產效率、節(jié)約能源、降低生產成本,提供新的思路。
[Abstract]:In the period of roadway excavation and mining, it is usually necessary to excavate the single-headed roadway. During the excavation process, a large number of blasting operations are required. Blasting can speed up production and improve the production efficiency, and at the same time, it also brings a lot of harm to the single-headed roadway excavation. The harm not only comes from the production of poisonous and harmful gases after blasting, but also includes the harm of blast wave, blasting flying stone and other directly or indirectly to the excavation work, among which the harm to the ventilating tuyere equipment is great. Shock waves and blasting flying stones are likely to damage ventilation equipment near the blast zone, which could pose a threat to the enterprise in terms of safety and production if the ventilation equipment is damaged. In the excavation of underground single-headed roadway, the efficient discharge of blasting smoke dust is always a difficult problem. The paper aims at the problem that local ventilation tuyere can not approach the blasting face at close distance, which leads to the low efficiency of ventilation and exhaust smoke. This paper puts forward the method of "pulsating ventilation" to improve the efficiency of ventilation and exhaust smoke. I set up a simulation test in the laboratory and use the pulsating air supply method to ventilation. The method of air supply is to control the wind speed of the fan by changing the wind speed. The fan is ventilated continuously for a period of time, then closed for a certain time and then opened again, which causes the energy imbalance of the air flow in the roadway, thus causing disturbance of the fluid micromass, mixing the smoke with the surrounding air, and when the fan stops supplying the air, The smoke can be moved to the effective area of air flow by its own diffusion, which is convenient for ventilating and exhausting when the fan is opened again. This paper analyses and compares the effect of constant ventilation and pulsating ventilation by setting up model roadway in laboratory, and obtains the effect of pulsating ventilation. The optimal pulsation period and duty cycle under the combined action of various parameters are obtained. The validity of "pulsating ventilation" is obtained through the laboratory simulation test and the analysis of test data. At the same time, pulsating ventilation can improve fan efficiency to a certain extent, reduce ventilation energy consumption, and provide new ideas for enterprises to improve production efficiency, save energy, reduce production costs and provide new ideas.
【學位授予單位】：昆明理工大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TD724

【參考文獻】

相關期刊論文 前10條

1 蔡志軍,廖永平;凈化循環(huán)通風在大斷面長距離獨頭巷道快速掘進中的應用[J];四川有色金屬;1994年03期

2 王洪義;趙國豪;王文記;姜霖;;基于CAN總線的裝備器材庫智能監(jiān)控系統(tǒng)的設計[J];傳感器世界;2008年02期

3 雷善淇;;獨頭巷道掘進中鉆孔通風的應用[J];工業(yè)安全與防塵;1989年03期

4 吳超;局部通風應用大直徑風筒的效果分析[J];工業(yè)安全與環(huán)保;2001年10期

5 鄭德明;降低獨頭長巷通風電費的探索[J];河北煤炭;1997年03期

6 趙繼軍;基于脈動通風原理的局部通風機控制的實現(xiàn)[J];河北建筑科技學院學報;2000年02期

7 涂習成;長距離獨頭巷道通風的改進[J];黃金;2004年02期

8 竇紅衛(wèi);;淺談煤礦井下有害氣體及防治[J];淮南職業(yè)技術學院學報;2007年04期

9 李德文;郭勝均;;中國煤礦粉塵防治的現(xiàn)狀及發(fā)展方向[J];金屬礦山;2009年S1期

10 張紅嬰;林和榮;;長距離獨頭掘進巷道通風技術應用研究進展[J];江西有色金屬;2008年04期

，

本文編號：1516076