Abstract: Broken rock accelerative consolidation technology is commonly used for the emergencies and natural disasters in mining engineering and geotechnical engineering．In light of the present secondary accidents induced by proper selection of chemical consolidation materials，, a consolidation material database is established based on the study of the classification of chemical consolidation material properties. In view of the engineering requirements of broken rock accelerative consolidation, a rock mass integrity classification method is proposed. Based on this, a decision support system for a rapid optimal selection of chemical consolidation material for rock mass is developed in consideration of the consolidation speed, strength and cost required by the specific consolidation engineering and its geological environment. Its application in the rapid consolidation of No. 1409 working face in a coal mine in Shandong has verified the rationality of the classification method for chemical consolidation materials and the rock mass integrity classification method for chemical consolidation. The research results can be used as the theoretical basis and auxiliary means for rock mass accelerative consolidation design.

Key words: Chemical consolidation, Rock masses classification, Chemical consolidation material, Decision support systems