Application and prospect of super-high-water packing material in mining engineering

In order to solve the problems of coal mining under buildings and railways and water bodies,working face passing through abandoned roadway,coal spontan eous combustion and so on,this paper researched the backill mining technology,mining technology with abandoned roadway prefilled and grouting fire prevention and extin guishing technology with super-high-water material as the packing material. Based on the properties of super-high-water packing material,taking paper took Taoyi Coal Min e,Wangzhuang Coal Mine and Jindi Coal Mine as example,the application of the technologies were introduced. The results showed that all of these techniques had obtaine d good application effect. The backfill mining technology could guarantee the goaf flling rate above 85%; there were no sharp rock pressure phenomena during work face a dvance to abandoned roadway after using mining technology with abandoned roadway prefilled by super-highwater material; the temperature and concentration of NH4 and CO in the fire area were returned to normal levels after using the grouting fire prevention and extinguishing technology. In the future,it is necessary to continue to improve t he related theory and optimize the process of the current technologies,and the application field of super-high-water material should be further expanded at the same time.