The problems such as high labour strength in charging,low operting efficiency,difficulty in ensuring the charging quality and poor maintenance of two-side wall in stope etc which existed in the large-diameter longhole mining for a long time have been well solved by use of the achievement in the study on new technology for bulk gravity charging in the large-diameter longhole mining and its blasting technique.Combined with this achievement,a dscription of the experimental process and test results of WBN-1 porous prilled ANFO use for the large-diameter longhole mining is made to promote a further application and development of large longhole mining method in China.