Research and application of high efficiency wetting agent for coal seam water injection in Xindeng Mining fully-mechanized mining face
Liu Zhiqiang
Abstract：Aiming at the problems of poor wetting effect and limited water injection range in traditional coal seam water injection tech-nology,a high-efficiency wetting agent formula has been developed to improve the wetting performance of coal seam water injection.Sur-face tension and contact angle tests were conducted on 12 commonly used monomer wetting agents,and 6 monomers with good wetting effects were selected.Then,the orthogonal experimental design was used to develop a new wetting agent formula by compounding 0.05%sodium dodecyl sulfonate and 0.05%sodium dioctyl sulfonate in a 1∶1 volume ratio.Field tests show that the compound wetting agent can increase the average moisture content of coal seams by about 2%and expand the wetting radius by 0.5 m;the average dust reduc-tion rate of different processes increase from 25%to over 46%.This compound formula is economically practical and has significant effects,providing an effective technical route for improving the effectiveness of coal seam water injection prevention and control.
Keywords：coal seam water injectionwetting agentorthogonal experimentcompound formulamoisture contentwetting radiusdust re-duction effect
Publication Date：2025-08-25
Online Publishing Date：2025-09-12(First online date of this platform, not the publication date of the document)
Pages：5( 54-58 )