The Method of Cutting Blast by Stage and Deck for the Large-diameter Boreholes and Its Experimental Study
Based on cutting principle and technology development of cutting of vertical blasthole by stage and deck, combined with the merits of middle space charging and toe space charging, the reinforced cutting effect of central large-diameter blasthole and the method of cutting blast by stage and deck toe space charging for the vertical large-diameter blastholes is put forward and analyzed theoretically. The parameters choice and practical effects of this cutting method was discussed after spot experiment outdoors. As a result, this new cutting blast is provided with the advantages of high blasthole using ratio, big cavity bulk, low rate of chunk, even mass and relatively high energy using ratio.
blast excavation cutting of vertical blasthole by stage and deck space charging cutting experiment
ZHANG Yiping JIANG Weidong
Mining School, Guizhou University, Guiyang, China Commercial College of the Central South University; Changsha, China;School of Resources and Safety E
国际会议
The Asian-Pacific Symposium on Blasting Techniques(亚洲太平洋地区爆破技术研讨会)
昆明
英文
254-259
2007-05-08（万方平台首次上网日期，不代表论文的发表时间）