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structure for the construction of tunnels and tunnel suitable for pushing and carrying machine or how willing for the cutting and drilling rocks and to carry and place the elementyou implement the armor and tapping
structure for the construction of tunnels and tunnel suitable for pushing and carrying machine or how willing for the cutting and drilling rocks and to carry and place the elementyou implement the armor and tapping
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机译:隧道和隧道的构造结构,适合推运机械,或者如何愿意切割和钻凿岩石以及如何承载和放置元素
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摘要
is the subject of this found a new backbone elements of work and camber.suitable for implementing tunnels and tunnel and the corresponding means to push for the equipment that need during the cutting and drilling rocks.it was designed to improve the working conditions of those who today must assist the machines used for the drilling of a tunnel during the construction of arches.for the initiation and continuation of the work; for the execution set of bindings.
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