A study on mixed coal simulation soft layer of gas adsorption
A study on mixed coal simulation soft layer of gas adsorption作者机构：School of Energy Xi＇an University of Science and Technology Xi＇an 710054 China
出 版 物：《Journal of Coal Science & Engineering(China)》 (煤炭学报（英文版）)
年 卷 期：2011年第17卷第3期
页 面：290-293页
学科分类：0808[工学-电气工程] 0819[工学-矿业工程] 081903[工学-安全技术及工程] 08[工学] 0807[工学-动力工程及工程热物理] 0818[工学-地质资源与地质工程] 080203[工学-机械设计及理论] 0815[工学-水利工程] 0813[工学-建筑学] 0802[工学-机械工程] 0814[工学-土木工程]
基 金：Supported by the National Nature Science Foundation of China (50874089) the Doctoral Program Foundation of Institutions of Higher Education of China(20096121110002) Scientific Research Program by Shaanxi Provincial Education Department ( 11 JK0774)
主 题：mixed coal soft layer coal and gas outburst adsorption
摘 要：Based on the single coal adsorption gas, hard coal and soft coal of intake airway in Shanxi Heshun Tianchi Coal Mine were chosen to simulate the soft coal seams in coalbed as those in different qualities are mixed with delamination. Experiments on characteristics of adsorption gas of hard coal and soft coal in different quality ratios were done according to the Langmuir single molecule layer absorption theory. Gas constant mensuration instrument WY-98B was used during the experiments. Isothermal adsorption curves, adsorption constants a and b of the mixed coal samples in different quality ratios were established for qualitative and quantitative analysis. The relationship curves of adsorption quantity with changing pressure and variation equation of adsorption constants a, b with changing thickness ratio shows that the thickness of soft layer and hard coal approximately equal, thus resulting in outburst at greatest risk, then a theoretical base for the mechanism of coal and gas outburst has been put forward and a technical support scheme for engineering control of gas outburst is laid out.
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