發(fā)布時間：2019-01-12 11:29

【摘要】：在煤礦生產(chǎn)中,瓦斯災(zāi)害一直是威脅煤礦安全生產(chǎn)的主要災(zāi)害之一。國內(nèi)外學者在瓦斯治理方面開展了大量的研究工作。瓦斯抽采是預(yù)防礦井瓦斯災(zāi)害的有效方法,瓦斯抽采情況直接影響瓦斯災(zāi)害治理的效果。 五陽煤礦7605工作面回采過程中瓦斯超限影響工作面正常生產(chǎn),為了保證7605工作面正常生產(chǎn),解決工作面瓦斯超限問題,需要提出合理的瓦斯治理措施,保障礦井的安全生產(chǎn)。在對五陽煤礦7605工作面瓦斯來源分析的基礎(chǔ)上,應(yīng)用理論計算、數(shù)值模擬等方法對五陽煤礦綜放工作面瓦斯治理進行研究。 通過分源法預(yù)測,確定7605工作面瓦斯來源主要來自工作面采空區(qū)和本煤層,在五陽煤礦現(xiàn)有采掘部署條件下對瓦斯抽采系統(tǒng)分析,礦井瓦斯抽采包括地面瓦斯泵站抽采和井下瓦斯抽采,7605工作面上隅角采用專用瓦斯排放巷解決上隅角瓦斯超限問題的綜合瓦斯治理措施；提出了五陽煤礦專用瓦斯排放巷的布置層位及布置原則,并設(shè)計了7605工作面專用瓦斯排放巷的巷道布置,即7605工作面瓦排巷布置在工作面直接頂和老頂內(nèi),垂向下距離煤層2-4m,與7605回風巷平行布置,內(nèi)錯回風巷15m,瓦排巷采用矩形斷面,巷寬2.6m,高2.6m,巷道斷面6.76m2。應(yīng)用FLUENT軟件對工作面瓦斯運移規(guī)律模擬分析,工作面上隅角的瓦斯?jié)舛扔蒛型通風方式的0.8%左右降為U+I型的0.6%左右,降低了上隅角的瓦斯?jié)舛取Ｍㄟ^以上方法有效的解決了7605綜放工作面瓦斯?jié)舛瘸薜膯栴},保證了工作面的正常生產(chǎn)。
[Abstract]:In coal mine production, gas disaster has been one of the main disasters threatening the safety of coal mine production. Domestic and foreign scholars have carried out a lot of research work in gas control. Gas drainage is an effective method to prevent mine gas disaster. In order to ensure the normal production of 7605 face and solve the problem of gas exceeding limit in 7605 face of Wuyang Coal Mine, it is necessary to put forward reasonable gas control measures to ensure the safety of mine production. Based on the analysis of gas source in 7605 face of Wuyang Coal Mine, the gas treatment of fully mechanized caving face in Wuyang Coal Mine is studied by means of theoretical calculation and numerical simulation. According to the prediction of source separation method, it is determined that the gas source of 7605 working face mainly comes from the goaf of the face and the coal seam. The gas drainage system is analyzed under the existing conditions of mining and deployment in Wuyang Coal Mine. Coal mine gas drainage includes ground gas pumping station and underground gas extraction. The comprehensive gas treatment measures of 7605 working face upper corner adopt special gas drainage roadway to solve the problem of gas exceeding limit in upper corner; This paper puts forward the layout level and layout principle of special gas drainage roadway in Wuyang coal mine, and designs the roadway layout of special gas drainage roadway in 7605 face, that is, 7605 face tile drainage roadway is arranged in the direct roof and the main roof of the face. The vertical and downward distance coal seam is 2-4m, parallel to 7605 return air lane, 15m of internal staggered return air lane, rectangular section of tile row roadway, 2.6m wide, 2.6m high, 6.76m2 roadway section. By using FLUENT software, the gas concentration in the upper corner of the working face is reduced from 0.8% of the U-type ventilation mode to 0.6% of the U-type ventilation mode, which reduces the gas concentration of the upper corner angle. The problem of gas concentration exceeding the limit of 7605 fully mechanized caving face is effectively solved by the above methods, and the normal production of the working face is ensured.
【學位授予單位】：遼寧工程技術(shù)大學
【學位級別】：碩士
【學位授予年份】：2013
【分類號】：TD712.6

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