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当前隧道修建中,开挖地层的钻爆方法获得大量推广。这一方法通用性强,工程造价较低,但缺点是,坑道周边不平整,对周围地层产生地震作用,超挖,欠挖都可能产生;爆破对山体的动力作用,破坏山体稳定,产生裂缝,造成渗水;在城市稠密区开挖隧道,爆破产生的噪音和振动,传给房屋和建筑物,可能造成损害。如果不用爆破方法,则会大量增加能量与材料的消耗,并非总是合理的。 近年来日本在坚硬的岩层中开发了一种开挖隧道
In the current tunnel construction, the drilling and blasting method of excavation formation has been widely promoted. This method has the advantages of universality and low construction cost, but has the disadvantage that the surrounding of the tunnel is not flat and may cause seismic action on the surrounding strata, which may result in over-excavation and under-excavation. The dynamic effect of blasting on the mountain body may damage the stability of the mountain and cause cracks Causing water seepage. Excavating tunnels in densely populated urban areas, noise and vibration caused by blasting can be transmitted to houses and buildings, possibly causing damage. If you do not blasting method, it will greatly increase the consumption of energy and materials, not always reasonable. In recent years Japan has developed an excavation tunnel in a hard rock formation