阳泉矿区瓦斯涌出量预测方法的研究

发布时间：2018-07-12 13:19

本文选题：煤层 + 瓦斯　；参考：《中北大学》2017年硕士论文

【摘要】：在经济迅速发展的时代,能源要求不断提高,煤矿企业的生产规模随之日益加大。必然会使煤矿行业中的安全问题变得逐年严重,尤其是矿井内瓦斯的安全影响会越来严重。例如山西省,从21世纪以来有350多人死亡于瓦斯事故,形成直接经济损失多达3亿元;我省开采煤矿全部是瓦斯矿,其中高瓦斯煤矿与瓦斯突出比例将近占到一半;可知瓦斯已经成为煤矿生产的重要治理指标,瓦斯防治的效果直接影响着煤矿生产的高效运转。而煤层瓦斯涌出量预测的准确性是瓦斯治理的前提,只有瓦斯涌出量预测准确才能计算出矿井的瓦斯涌出量及瓦斯构成情况,才能为瓦斯治理和抽放系统安装提供可靠依据;且瓦斯是环保可利用的能源,对于环境保护以及煤矿瓦斯抽采的研究、预防事故及煤矿安全生产具有重大意义。首先,论文对瓦斯涌出量预测方法的现状进行了分析,且叙述了山西省沁水煤田阳泉矿区煤矿开展瓦斯涌出量预测的现状,提出了阳泉矿区含有石灰岩层的特殊地质条件的瓦斯涌出量预测的方法。其次,本文以当前的分源预测方法的理论为基础,在大阳泉煤矿采掘面通过打钻孔进行瓦斯含量的现场测定工作并收集了矿井历年来石灰岩层的瓦斯涌出情况,最后在实验室通过仪器准确测出煤层的瓦斯含量,通过实测的大量基础数据以及收集矿井历年的实际瓦斯涌出规律提出了含有石灰岩层的瓦斯涌出量预测的新方法。最后,以大阳泉矿区为例进行矿井瓦斯涌出量计算,把石灰岩参与到回采面瓦斯涌出量计算中,12号煤层与15号煤层误差值分别控制在3.46%和3.65%;可见,现行的瓦斯涌出预测方法只考虑了煤层的瓦斯涌出量,而忽略了阳泉矿区在煤化过程中形成了多层石灰岩层,而石灰岩层中含有的大量的游离瓦斯。本论文建立了含有石灰岩层的瓦斯涌出量预测方法和理论。验证了建立在考虑石灰岩瓦斯的预测方法下的准确性和适用性,并为煤矿瓦斯治理提供精确的依据。
[Abstract]:In the time of rapid economic development, the demand for energy is increasing, and the production scale of coal mining enterprises is increasing. The safety problem in the coal industry will inevitably become serious year by year, especially the safety of gas in the mine will be more and more serious. For example, more than 350 people have died in the gas accident since twenty-first Century and formed direct from the Shanxi province. The economic loss is up to 300 million yuan, and all the coal mines in our province are gas mines, among which the proportion of high gas coal and gas outburst is nearly half. It is known that gas has become an important control index for the production of coal mine, and the effect of gas prevention and control directly affects the efficient operation of coal mine production. The premise of control is that only the prediction of gas emission is accurate to calculate the gas emission and gas composition of the mine, so as to provide reliable basis for the gas control and drainage system installation, and gas is the energy of environmental protection and can be used, for environmental protection and coal mine gas extraction research, prevention of accidents and coal mine safety production. First, the paper analyzes the present situation of the prediction method of gas emission, and describes the current situation of the prediction of gas emission in Yangquan coal mine in Qinshui coalfield, Shanxi Province, and puts forward the method of predicting the gas emission of the special geological conditions in the Yangquan mining area with the special geological conditions of the limestone strata. On the basis of the theory of measuring method, the gas content in the mining face of the great Yangquan coal mine is measured by drilling holes and the gas emission of the limestone strata has been collected in the past years. Finally, the gas content of the coal seam is accurately measured by the instrument in the laboratory. A new method of gas emission prediction with lime rock formation is put forward in the law of gas emission. Finally, the gas emission of the mine is calculated in the great Yangquan mining area, and the limestone is involved in the calculation of gas emission in the mining face, and the error value of No. 12 and No. 15 coal seam is controlled in 3.46% and 3.65% respectively. The measurement method only takes into account the gas emission of the coal seam, but neglects the formation of the multilayer lime rock in the coalification process in Yangquan mining area, and there are a lot of free gas in the limestone stratum. This paper established the prediction method and theory of gas emission with lime rock layer. It is accurate and applicable, and provides accurate basis for gas control in coal mines.
【学位授予单位】：中北大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD712.5

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