超声激励不同含水量煤体瓦斯吸附规律实验研究  

Experimental Study on Gas Adsorption Law of Coal with Different Water Content under Ultrasonic Excitation

作　　者：李云 LI Yun(Yuwu Coal Industry Company,Shanxi Lu’an Group,Changzhi 046103,China)

机构地区：[1]山西潞安集团余吾煤业有限责任公司,山西长治046103

出　　处：《煤矿现代化》2025年第1期112-116,共5页Coal Mine Modernization

摘　　要：超声激励对煤层气开发具有增渗促解效应。本文开展了超声激励前后不同含水煤体瓦斯吸附实验,研究了煤体含水量对超声作用下瓦斯吸附量行为的影响规律。结果表明:超声作用后原煤、干燥煤和饱水煤对瓦斯的最大吸附量分别增加了27.65%、15.76%和47.30%,与吸附解吸速率有的常数b值分别增加了14.29%、6.06%和23.53%,有利用于促进煤体瓦斯的解吸扩散过程。由此表明,超声激励对煤体瓦斯吸附解吸能力有显著的改善效果,煤样含水量越高,超声引起的吸附能力提升幅度越明显。Ultrasonic stimulation has the effect of increasing permeability and promoting sorption in coalbed methane development.This article conducted gas sorption experiments on coal with different water contents before and after ultrasonic excitation,and studied the influence of water content on the gas adsorption behavior under ultrasonic excitation.The results showed that the maximum adsorption capacity of raw coal,dry coal,and saturated coal for gas increased by 27.65%,15.76%,and 47.30%respectively after ultrasound treatment,and the constant b values related to ad/de-sorption rates increased by 14.29%,6.06%,and 23.53%,respectively,which is beneficial for promoting the desorption and diffusion process of coal gas.It indicates that ultrasonic excitation has a significant improvement effect on the ad/de-sorption capacity of coal gas.The higher the water content of the coal sample,the more significant the increase in adsorption capacity caused by ultrasound.

关 键 词：瓦斯 吸附解吸 超声激励 煤层气 

分 类 号：TD712[矿业工程—矿井通风与安全]