1) large-scale lead pipe grouting
超前大管棚注浆
1.
By means of water drainage and blockage, and with large-scale lead pipe grouting technology, the tunnel goes through the poor geology zone smoothly.
吊钟岩隧道DK250+130处,隧道拱部突发涌水、涌泥石,造成掌子面堆积,采用排堵水和超前大管棚注浆相结合的施工技术,顺利通过了该不良地质地段。
2) advanced pipe grouting
超前注浆管棚支护
1.
The advanced pipe grouting is an effective technique to avoid the instability of shield-tunneling faces in soft or water-bearing ground.
超前注浆管棚支护是一种避免在软土地层或含水地层中盾构隧道开挖面失稳的有效技术。
3) leading steel pipeline shed
超前大管棚
1.
The application of leading steel pipeline shed previous timbering technology in Dongtian tunnel;
超前大管棚预支护技术在东田隧道中的应用
4) large pipe-shed injecting technique
大管棚注浆技术
5) long tube prestress-mortar and pre-timbering technique
长管棚预注浆超前支护技术
补充资料：棚棚硬
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