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中文摘要：
为了分析功率超声对煤层瓦斯抽放率的影响，基于线性超声学原理，推导了功率超声在煤层瓦斯中传播的吸收致能量损耗公式及热传导诱发的能量损耗公式，并进而推导了功率超声下煤层瓦斯升温计算公式。利用试验资料研究了煤体升温对瓦斯吸附／解吸的影响，在瓦斯吸附量．温度的拟合关系式基础上，建立了功率超声诱发煤层瓦斯升温致瓦斯解吸量的计算公式。研究表明，功率超声致煤层瓦斯升温作用能提高煤层瓦斯的解吸率和抽放率。
英文摘要：
To analyse the effect of power ultrasound on methane recovery in coal seams, the equations for the energy loss in coal seam induced by power ultrasound propagation absorption and heat transfer were deduced based on linear ultrasound. Furthermore, the formula for calculating seam gas temperature increase due to ultrasonic power was obtained. The effects of gas heating on absorption/desorption was also investigated using test data. By fitting the equation curve of gas absorption vs. temperature, the formula for calculating the desorption capacity due to gas heating was derived. The results show that the gas heating due to ultrasonic power can effectively improve the gas desorption and gas drainage.
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