Natm ๊ณต๋ฒ - New Austrian Tunneling Method (NATM)
New Austrian Tunneling Method (NATM)
NATM :: ๊ฐ๋ฆ๊ฑด์ค
New Austrian Tunneling Method (NATM)
New Austrian Tunneling Method (NATM)
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The New Austrian Tunneling Method (NATM) & shotcrete
NATM ๊ณต๋ฒ
3 Crown Heading Excavation For crown heading excavation, the bench and invert excavation is only started after the excavation of the tunnel crown Fig.
Double-shell tunnel cross section.
With the similar model test, Yang et al.
[์ง๋ฐ๊ณตํ]์ 7์ฅ ํฐ๋๊ณต(ํฐ๋ ๊ตด์ฐฉ๋ฐฉ๋ฒ) #2
5 m high, and 113.
01 total 90 total 0.
Figure 4.
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