沉积煤尘层表面渗透润湿模型的试验研究  

Experimental study on wetting and permeating model of fallen coal dust surface

作　　者：郑源臻[1,2] 李庆钊[1,2] 代华明[1,2] 阮马良 赵明哲[1,2] 王可[1,2] 

机构地区：[1]中国矿业大学安全工程学院,江苏省徐州市221116 [2]煤炭资源与安全开采国家重点实验室,江苏省徐州市221116

出　　处：《中国煤炭》2015年第7期100-103,115,共5页China Coal

基　　金：国家自然科学基金资助项目(51204169);江苏省自然科学基金资助项目(BK20131115)

摘　　要：采用光学法液滴形态分析(DSA)系统,研究了不同表面活性剂液体对沉积煤尘层的润湿过程。在分析润湿机理的基础上,建立了沉积煤尘层表面的渗透润湿模型,并用接触角试验数据进行验证。结果表明,液体在沉积煤尘上发生明显渗透作用,表现为接触角迅速减小,直到减小到零。模型拟合的相关系数均大于0.92646,说明用该模型描述润湿剂在沉积煤尘层表面的渗透润湿过程具有较好的效果。Wetting process of the different surfactant liquid to the fallen coal dust was studied by adopting the droplet shape analysis（DSA） system of optical method. The wetting and permeating model of fallen coal dust surface was established and verified by means of contact angle data on a basis of wetting mechanism analysis. The result shows that the surfactant liquid has obviously permeation effect on the falien coal dust, presenting that the contact angle rapidly reduced, until to zero. The correlation coefficient of fitting model is higher than 0. 92646, which shows that the model can well describe the wetting process of the wetting agents to the fallen coal dust.

关 键 词：沉积煤尘 润湿模型 渗透作用 接触角 

分 类 号：TD714[矿业工程—矿井通风与安全]