本文選題：吸附 + 微孔　； 參考：《遼寧工程技術(shù)大學(xué)》2013年碩士論文

【摘要】：隨著礦井開采深度的增加,煤與瓦斯突出現(xiàn)象將會(huì)日益增多,怎樣預(yù)防和控制煤與瓦斯突出是我們不得不面臨的嚴(yán)峻考驗(yàn)。隨著對煤孔隙結(jié)構(gòu)研究不斷深入,我們發(fā)現(xiàn)煤的孔隙結(jié)構(gòu)對儲(chǔ)存瓦斯的能力,滲透性等有很大影響,特別是占煤孔隙中大量表面積的微孔及微微孔,所以對煤微觀孔隙結(jié)構(gòu)的深入研究,不僅能從微觀上說明瓦斯在煤里的賦存機(jī)理,并且對于探明煤與瓦斯突出現(xiàn)象有重大意義。本文通過對不同礦井不同煤樣的工業(yè)分析,得出不同煤樣的瓦斯放散速度,堅(jiān)固性系數(shù),初步判定煤樣的突出性；通過低溫氮吸附試驗(yàn),得出等溫吸附曲線,比較了突出煤和非突出煤吸附量的差異；通過Langmuir, HK等方法分析了突出煤和非突出煤在微觀孔隙特征比表面積、孔容積、孔徑分布上存在的差異,最終得出煤的微觀孔隙特征對于其突出與非突出的影響。通過實(shí)驗(yàn)研究得出：突出煤的微孔比表面積大于非突出煤；突出煤在極低相對壓力下的微孔吸附量明顯大于非突出煤；通過HK方程計(jì)算出的突出煤和非突出煤的微孔孔徑分布并無明顯差異；通過DA方程計(jì)算出來突出煤的孔容積明顯大于非突出煤。
[Abstract]:With the increase of mining depth, the phenomenon of coal and gas outburst will increase day by day. How to prevent and control coal and gas outburst is a severe test that we have to face. With the further study of the pore structure of coal, we find that the pore structure of coal has great influence on the gas storage ability, permeability and so on, especially the micropores and pico-pores, which account for a large number of surface areas in coal pores. Therefore, the further study on the micro-pore structure of coal can not only explain the mechanism of gas occurrence in coal microscopically, but also have great significance for the detection of coal and gas outburst phenomenon. Based on the industrial analysis of different coal samples in different mines, the gas emission velocity and the coefficient of solidity of different coal samples are obtained, the protruding properties of coal samples are preliminarily determined, and the isothermal adsorption curves are obtained by nitrogen adsorption tests at low temperature. The difference of adsorption capacity between outburst coal and non-outburst coal was compared, and the differences of pore surface area, pore volume and pore size distribution between outburst coal and non-outburst coal were analyzed by Langmuir, HK and other methods. Finally, the influence of micro-pore characteristics of coal on its outburst and non-outburst is obtained. The experimental results show that the specific surface area of the outburst coal is larger than that of the non-outburst coal, and the adsorption capacity of the outburst coal under the extremely low relative pressure is obviously larger than that of the non-outburst coal. There is no obvious difference between the pore size distribution of outburst coal and non-outburst coal calculated by HK equation, and the pore volume of outburst coal calculated by DA equation is obviously larger than that of non-outburst coal.
【學(xué)位授予單位】：遼寧工程技術(shù)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2013
【分類號(hào)】：TD713

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