Experimental study on preparation of surface crack sealing material from coal base solid waste
Mining enterprises produce a large amount of solid waste in the production process.The surface cracks in the goaf of coal mine also have great influence on production and human life.Based on the analysis of the mine landform,formation lithology,climate and hydrology,the cause of the formation of surface cracks in the gob of the mine is obtained.Combined with the actual situation of the site,coal-based solid waste preparation filling slurry is used to solve the problem of surface cracks in a coal mine in Inner Mongolia.The fluidity of filling slurry,compressive strength and durability of filling body are studied using different filling material ratios(fly ash,desulfurized gypsum and cement are selected as filling materials),and the optimal proportion of fly ash and cement is 10∶0.5 and the ratio of water-fly ash is 1.
国家科技期刊平台
NSTL
万方数据
维普
