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用液压冲击式碎石器进行全断面隧道掘进是意大利使用的一种新方法,试验证实此法能适应各种场合。因其生产效率高及设备费用低,不久的将来这种方法将成为标备掘进法。自20多年前液压冲击式碎石器出现以来,其数量和应用范围剧增。最初碎石器用来破碎大块、混凝土块和进行拆除作业。冲击能达600焦耳的3000公斤碎石器的出现,
Full-face tunneling with hydraulic percussive lithotripter is a new method used in Italy. The test proved that this method can adapt to various occasions. Due to its high production efficiency and low equipment costs, this method will become a standard heading method in the near future. Since its emergence more than 20 years ago, the number and application range of hydraulic impact gravel devices have increased dramatically. The first lithotripter was used to crush large blocks, concrete blocks and remove them. The impact of up to 600 joules 3000 kg stone device appears,