| 摘要 |
FIELD: blasting at opencast mining. SUBSTANCE: method consists in delivery of charge elements to the hole of flexible material secured in the entrance of the deep-hole, the other end of the hose with the cable is secured on the bitts near the deep-hole entrance. By-passing the free part of the hose through the bitts at a continuing delivery of the charge elements to the deep-hole, the charge is lowered and at a distance of 0.1 to 0.5 diameter from the face it is freed of the charge, and together with the cable on the lower end of the hose it is raised for charging of other deep-holes. EFFECT: provided formation of deep-hole charge without any use of mechanisms. 4 dwg
|
