本文選題：瓦斯 + 通風治理　； 參考：《華北理工大學》2017年碩士論文

【摘要】：礦井深部瓦斯問題是世界采礦業(yè)上面臨的難解課題,國外的瓦斯治理技術與我國存在較大差別,因所處的地質條件不同,采取的方法也不盡相同,但處理問題的思路卻有借鑒作用。目前,我國煤礦開采深度達到-1000米級別的礦井數量也逐漸增大,對瓦斯治理技術提出更加苛刻的需求,同樣唐山礦需要應對深井下瓦斯異常問題,亟待解決。Y485綜放工作面是岳胥區(qū)-793水平以下工作面,通風路線長、系統(tǒng)阻力大造成風量緊張,同時面臨瓦斯涌出量大,影響礦井的正常生產,并給安全造成很大的隱患。為了加強瓦斯災害的治理保障安全生產,通過測定工作面通風阻力、煤層瓦斯壓力、瓦斯含量等單項指標,對工作面瓦斯狀況有初步了解。并在此基礎上分析得出采空區(qū)和本煤層瓦斯是Y485工作面主要瓦斯來源,應用分源動態(tài)預測法對瓦斯涌出量進行預測計算,從通風和瓦斯抽放兩個方面研究制定出利用采空區(qū)調壓技術和埋管抽放以及高位鉆孔抽放瓦斯的治理技術方案。通過運用網絡解算等技術方法和理論知識,解決了復雜的測量巷道風量問題;通過調整通風系統(tǒng)壓力,掌握了采空區(qū)瓦斯流動規(guī)律,保證工作面瓦斯向采空區(qū)流動,在此基礎上利用采空區(qū)調壓技術,使Y485采空區(qū)的整體壓力大于鄰近采空區(qū)使瓦斯向其運移,從而減少工作面瓦斯涌出量;利用高位瓦斯抽采鉆孔及采空區(qū)鋪設管路對工作面采空區(qū)瓦斯進行消除,并對預抽煤層瓦斯鉆場、鉆孔的基礎參數進行計算設計,優(yōu)化最佳鉆場間距、鉆孔的有效長度和有效利用率等參數。對設計、優(yōu)化效果分析后,認為Y485工作面瓦斯治理技術與之前技術相比更加實用高效。解決了工作面風排瓦斯涌出量大的治理難點,保證了礦井正常開展生產活動。
[Abstract]:The deep gas problem in the mine is a difficult problem in the world mining industry. There is a great difference between the foreign gas control technology and our country. Because of the different geological conditions, the methods are not the same, but the thought of dealing with the problem can be used for reference. At present, the number of mine with the depth of coal mining to -1000 meters is also the same. Gradually increasing, it puts forward more demanding demand for gas control technology, and Tangshan mine needs to deal with the problem of gas anomaly under deep well. It is urgent to solve the.Y485 fully mechanized caving face is the working face under the -793 level of yuxu District, the ventilation line is long, the system resistance is large and the air quantity is tense, and the gas emission is large, which affects the normal production of the mine and gives it to the mine. In order to strengthen the control of the gas disaster, in order to strengthen the safety production of the gas disaster, by measuring the ventilation resistance of the working face, the coal seam gas pressure, the gas content and so on, it has a preliminary understanding of the gas status in the working face. On this basis, it is concluded that the goaf and the coal seam gas are the main gas sources of the Y485 working face, and the application of the gas is the main source of gas. The gas emission is predicted and calculated by the dynamic prediction method of the source. From two aspects of ventilation and gas drainage, a technical scheme is made to use the technology of regulating pressure in the goaf and the drainage of the buried pipe and the drainage of gas in the high borehole. Through the use of the technical methods and the theoretical knowledge of the network calculation, the complexity of the measurement of the volume of the tunnel is solved. By adjusting the pressure of the ventilation system, the law of gas flow in the goaf is mastered, and the gas flow to the goaf is ensured. On this basis, the pressure of the goaf is used to make the whole pressure of the Y485 goaf greater than the adjacent goaf to move the gas to it, thus reducing the gas emission of the working face, and using the high gas extraction drilling and the drilling and drilling. The gas in the goaf is eliminated by the laying of the goaf, and the basic parameters of the drilling field are calculated and designed to optimize the optimum drilling distance, the effective length and the effective utilization of the drill. After the design and the optimization effect analysis, it is recognized that the gas treatment technology of the Y485 working face is compared with the previous technology. The utility model is practical and efficient, and solves the difficulties in controlling the gas emission from the working face and ensures the normal production activities of the mine.
【學位授予單位】：華北理工大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TD712

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本文編號：1982113