blasting drift

常見例句

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.
實踐表明，采用單螺旋掏槽方式提高了平巷掘進(jìn)爆破效率，取得了良好的經(jīng)濟(jì)效益。
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;
針對某鐵礦水平巷道掘進(jìn)爆破效率較低的問題，確定了掏槽方式和爆破參數(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)過程中使用小直經(jīng)鉆尖，小直徑藥卷和小直徑錨桿，可實現(xiàn)光面爆破，有效提高成巷建設(shè)，降低掘進(jìn)成本。