综采工作面瓦斯涌出预测及其突出危险性的研究

发布时间：2018-03-04 23:18

本文选题：瓦斯涌出　切入点：综采工作面　出处：《太原理工大学》2013年硕士论文　论文类型：学位论文

【摘要】：煤炭作为我国主要的能源之一,在国民经济以及人民的生活中起到了不可替代的作用。作为煤炭资源开采大国,我国无论从开采数量还是规模上在全世界都是无出其右的。在我国每年的重特大安全生产事故中,煤矿安全事故占的比例非常的大,而在煤矿安全事故中,瓦斯灾害及其次生灾害所占比例最高。因此,研究瓦斯灾害预防机理就显得尤为重要。在煤矿开采场所,瓦斯灾害主要是瓦斯涌出和煤与瓦斯突出。在矿井中瓦斯的涌出地点称为瓦斯源,瓦斯源的数量及其涌出强度直接决定着综采工作面的瓦斯积聚量。为了治理好瓦斯必须提前预测出其瓦斯涌出量,为生产和治理探明道路。由此可见,瓦斯涌出者矿之大事,死生之地,存亡之道,不可不察也。本文对瓦斯的贮存及运移规律进行了研究,并利用抚顺煤科院所提出的分源预测法,对矿井综采工作面的瓦斯涌出进行了预测并建立起瓦斯涌出预测模型。对于不同来源的瓦斯,本文将其分为四个源头即：煤壁瓦斯涌出源,落煤瓦斯涌出源,采空区遗留煤炭涌出源以及邻近层瓦斯涌出源。结合现场数据以及其涌出强度的规律对以上四者分别建立了涌出强度随时间变化的数学模型以及累计瓦斯涌出量数学模型。该模型具有直观且适应性强等特点。后利用该模型对阳煤集团寺家庄矿进行了瓦斯涌出预测。实践证明该模型虽然还不甚完善,但具有一定的实用价值且存在较大的改进空间。对于采空区内瓦斯运移及分布情况本文利用太原理工大学的相似模拟实验设备进行了模拟。矿井突出事故,具有突然性和破坏性大的特点。本文利用综合指标法——煤层瓦斯压力(P)、瓦斯放散初速度指标(△p)、煤的坚固性系数(f)和煤的破坏类型对寺家庄矿的9、11、12、13、14号煤层的突出危险性进行了预测。
[Abstract]:As one of the main energy sources in our country, coal plays an irreplaceable role in the national economy and people's life. No matter in terms of the quantity or scale of mining in China, there is no right in the world. In China, coal mine safety accidents account for a very large proportion of major and serious accidents in production every year, while in coal mine safety accidents, The proportion of gas disaster and secondary disaster is the highest. Therefore, it is very important to study the prevention mechanism of gas disaster. In coal mining sites, gas disasters are mainly gas emission and coal and gas outburst. The quantity of gas source and its emission intensity directly determine the amount of gas accumulation in fully mechanized mining face. In order to control gas well, it is necessary to predict the amount of gas emission in advance, so as to prove the road for production and control. The place of death and the way of survival cannot be ignored. In this paper, the law of gas storage and migration is studied, and the method of source separation prediction proposed by Fushun Academy of Coal Sciences is used. The gas emission of fully mechanized coal mining face is predicted and a prediction model of gas emission is established. For gas from different sources, this paper divides it into four sources: coal wall gas emission source, falling coal gas emission source. Combined with the field data and the regularity of the emission intensity, the mathematical model of the variation of the emission intensity with time and the accumulative amount of gas emission were established for the above four persons. The mathematical model, which is intuitive and adaptable, is used to predict the gas emission in Sijiazhuang Mine of Yangmei Group Group. The practice shows that the model is not perfect. However, there is some practical value and there is a great room for improvement. The gas migration and distribution in goaf are simulated by the similar experimental equipment of Taiyuan University of Technology in this paper. Mine outburst accident, It has the characteristics of sudden and destructiveness. In this paper, the comprehensive index method of coal seam gas pressure, initial velocity index of gas release (PX) and the failure type of coal have been applied to the outburst of coal seam 9111112Y1314 in Sijiazhuang Coal Mine. The danger is predicted.
【学位授予单位】：太原理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TD713

【参考文献】