唐山矿Y485工作面瓦斯治理技术及应用

发布时间：2018-06-05 13:14

本文选题：瓦斯 + 通风治理　；参考：《华北理工大学》2017年硕士论文

【摘要】：矿井深部瓦斯问题是世界采矿业上面临的难解课题,国外的瓦斯治理技术与我国存在较大差别,因所处的地质条件不同,采取的方法也不尽相同,但处理问题的思路却有借鉴作用。目前,我国煤矿开采深度达到-1000米级别的矿井数量也逐渐增大,对瓦斯治理技术提出更加苛刻的需求,同样唐山矿需要应对深井下瓦斯异常问题,亟待解决。Y485综放工作面是岳胥区-793水平以下工作面,通风路线长、系统阻力大造成风量紧张,同时面临瓦斯涌出量大,影响矿井的正常生产,并给安全造成很大的隐患。为了加强瓦斯灾害的治理保障安全生产,通过测定工作面通风阻力、煤层瓦斯压力、瓦斯含量等单项指标,对工作面瓦斯状况有初步了解。并在此基础上分析得出采空区和本煤层瓦斯是Y485工作面主要瓦斯来源,应用分源动态预测法对瓦斯涌出量进行预测计算,从通风和瓦斯抽放两个方面研究制定出利用采空区调压技术和埋管抽放以及高位钻孔抽放瓦斯的治理技术方案。通过运用网络解算等技术方法和理论知识,解决了复杂的测量巷道风量问题;通过调整通风系统压力,掌握了采空区瓦斯流动规律,保证工作面瓦斯向采空区流动,在此基础上利用采空区调压技术,使Y485采空区的整体压力大于邻近采空区使瓦斯向其运移,从而减少工作面瓦斯涌出量;利用高位瓦斯抽采钻孔及采空区铺设管路对工作面采空区瓦斯进行消除,并对预抽煤层瓦斯钻场、钻孔的基础参数进行计算设计,优化最佳钻场间距、钻孔的有效长度和有效利用率等参数。对设计、优化效果分析后,认为Y485工作面瓦斯治理技术与之前技术相比更加实用高效。解决了工作面风排瓦斯涌出量大的治理难点,保证了矿井正常开展生产活动。
[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.
【学位授予单位】：华北理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD712

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