红石岩煤矿瓦斯涌出特征及其影响因素相关性分析

发布时间：2018-06-21 16:36

本文选题：瓦斯涌出 + SPSS　；参考：《西安科技大学》2017年硕士论文

【摘要】：矿井事故极大地威胁着工作人员的生命安全和煤矿的财产安全,瓦斯事故又是煤矿事故中危害最严重最危险的一类。随着开采深度的增加和工作面推进速度的加快,不少低瓦斯矿井也出现了瓦斯涌出异常的问题。因此研究低瓦斯矿井瓦斯涌出影响因素,对瓦斯涌出异常的防治有着重要意义。本文以红石岩煤矿12406工作面为研究对象,对绝对瓦斯涌出量、上隅角和回风顺槽瓦斯浓度的影响因素进行相关分析,寻找对瓦斯涌出影响最显著的因素,并结合回归分析,将显著因素和绝对瓦斯涌出量、瓦斯浓度进行曲线拟合,以数学关系进一步论证这些因素是如何影响瓦斯涌出的。对之前收集整理的红石岩煤矿12406工作面数据进行统计,利用SPSS相关性分析,发现煤层厚度和日推进度与绝对瓦斯涌出量显著相关,底板标高与回风顺槽瓦斯浓度显著相关,大气压与上隅角瓦斯浓度显著相关;对煤层厚度与日推进度和绝对瓦斯涌出量进行回归分析,得出这两个因素与绝对瓦斯涌出量符合三次曲线的变化趋势,对底板标高和回风顺槽瓦斯浓度进行回归分析,得出两者符合S曲线变化趋势,对大气压和上隅角瓦斯浓度进行回归分析,得出两者符合S型曲线变化趋势;对累积进尺和回风顺槽瓦斯浓度进行分析,得出工作面没推进25-30米,回风顺槽瓦斯浓度就会出现一次峰值;对大气压变化量和上隅角瓦斯浓度进行分析,得出大气压变化的快慢是直接影响上隅角瓦斯浓度变化的因素。
[Abstract]:Mine accidents greatly threaten the safety of workers and the property of coal mines. Gas accidents are the most serious and dangerous type of accidents in coal mines. With the increase of mining depth and the acceleration of the speed of working face, many low gas mines also have abnormal gas emission. Therefore, it is of great significance to study the influencing factors of gas emission in low gas mine. Taking 12406 face of Hongshiyan Coal Mine as the research object, this paper analyzes the influence factors of absolute gas emission quantity, upper corner angle and gas concentration in the return air trench, and looks for the most significant factors affecting the gas emission, and combines with regression analysis. The significant factors, absolute gas emission and gas concentration were fitted to the curve, and the mathematical relationship was used to further demonstrate how these factors affect the gas emission. The data collected from 12406 face of Hongshiyan Coal Mine were statistically analyzed. It was found that the thickness of coal seam and the daily advance degree were significantly related to absolute gas emission, and the elevation of floor was significantly related to the gas concentration in the return air trench by using the correlation analysis of the coal seam thickness and the daily advance degree. The atmospheric pressure is significantly related to the gas concentration in the upper corner, and the regression analysis between the coal seam thickness and the daily propulsive degree and the absolute gas emission shows that these two factors and the absolute gas emission are in accordance with the change trend of the cubic curve. Regression analysis of bottom elevation and gas concentration in return air trench shows that both of them are in accordance with the changing trend of S curve, and the atmospheric pressure and gas concentration in upper corner are regressed, and they are in accordance with the changing trend of S type curve. Based on the analysis of the gas concentration in the accumulative ruler and the return air trench, it is concluded that the gas concentration in the return air trench will have a peak value if the working face is not advancing 25-30 meters, and the change of atmospheric pressure and the gas concentration in the upper corner are analyzed. It is concluded that the speed of change of atmospheric pressure is the factor that directly affects the change of gas concentration in upper corner angle.
【学位授予单位】：西安科技大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD712.5

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