This paper mainly discusses the performances of borehole grouting material appli cable to the conditions of very developed cracks in the 3# coal seam of Zhaozh uang mine,Jincheng Anthracite Mining Group.In the indoor experiment of grouting,loose coal particles with a certain diameters was taken as object to be cemented ,and soluble glass was used as the main component of consolidation slurry,the co mpression strength of solidified coal was test. Especially,the impacts of the co ntent of Coagulant A solution,soluble glass content,grouting slurry content,the sizes of coal particle,and so on the compression strength of solidified coal we re studied.A better mixing formula of consolidation slurry was developed,which can be used to guide the construction of gas drainage holes.