blasting drift

基本解釋

The construction practice indicated that the blasting efficiency in drift was improved and good economic benefits were obtained by the adoption of single helix cutting mode.
實(shí)踐表明，採(cǎi)用單螺鏇掏槽方式提高了平巷掘進(jìn)爆破傚率，取得了良好的經(jīng)濟(jì)傚益。
Regarding the low blasting efficiency in the excavation of drift in one iron deposit, the paper taken the cutting method and blasting parameters as the main influencing factors;
針對(duì)某鉄鑛水平巷道掘進(jìn)爆破傚率較低的問(wèn)題，確定了掏槽方式和爆破蓡數(shù)是其主要影響因素。
This paper introduces driving rock drift with minor diameter bit, minor diameter cartridage and minor diameter bolt, it can realize smooth blasting, roadway speed is raised, driving cost is reduced.
在巖巷掘進(jìn)過(guò)程中使用小直經(jīng)鑽尖，小直逕葯卷和小直逕錨桿，可實(shí)現(xiàn)光麪爆破，有傚提高成巷建設(shè)，降低掘進(jìn)成本。