Influence of gas adsorption on coal body
Influence of gas adsorption on coal body
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发表时间：
2011
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通讯作者：
Yang Tao
中科院分区：
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作者：
Yang Tao
利用自行研制的实验装置，研究了煤体在吸收瓦斯过程中随瓦斯压力变化的变形规律，并在前人研究的基础上分析了瓦斯对煤体的影响，结果表明，煤体吸收瓦斯后发生膨胀变形，游离和吸附瓦斯的存在会削弱煤体的强度，煤的脆性程度增加，使煤体更加不稳定，煤体破坏速度加快，瓦斯吸附作用越强，煤体中瓦斯含量越多，煤的膨胀变形就越大，当煤在一定条件下，膨胀应力越大，煤的强度降低越多。
Coal deformation with the change of gas pressure was studied during coal absorbing gas by the use of self-developed experimental device and on the basis of previous studies,the impact of gas on coal was analyzed.The results show that swelling deformation of coal occurs after coal absorbs gas.The existence of free and adsorbed gas will weaken the strength of coal,which result into coal brittleness degree increasing and make coal body more instable and coal failure speed faster.The stronger absorption of gas is,the more gas content in coal body is,the greater swelling deformation of coal occurs.When the coal is under limited conditions,the greater the swelling stress occurs,the more the coal intensity reduces.