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目前,世界各国广泛采用各种非爆破法掘削岩体及混凝土构筑物,其中有用膨胀性破碎剂(亦即静态破碎剂)的方法,但在使用中存在着装药时间过长和破碎效果受周围条件影响的缺陷。为此,日本在最近的隧道工程中,为缩短破碎剂放药时间用了具有加速膨胀反应并能防止鼓射现象的催化剂,当自由面不够大时,在开掘面上用硬砂喷射切削沟缝以增大自由面,本文仅对这两种无振动开掘隧道的方法简单加以介绍。
At present, various non-blasting methods are widely used in various countries in the world to excavate rock mass and concrete structures, among which there are methods of using expansive crushing agents (ie, static crushing agents). However, there is a problem that the charging time is too long and the crushing effect is affected by the surrounding conditions Impact of defects. To this end, Japan in recent tunneling projects, in order to shorten the time to release the crushing agent used to accelerate the expansion reaction and prevent the drum phenomenon of the catalyst, when the free surface is not big enough, the surface of the excavation with hard sand jet ditches In order to increase the free surface, this paper only introduces the two methods of vibrationless digging tunnel simply.