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。
The ground water in many areas of China is of second type iron bearing groundwater.
我国不少地方的地下水属于第二类型含铁地下水。
Freezing construction is an auxiliary method in soft and water-bearing ground. The horizontal freezing construction was firstly applied in Dabeiyao Station of Beijing metro tunnel.
冻结施工是软弱含水土层中施工的辅助方法之一，北京地铁大北窑车站区间隧道水平冻结施工工程是我国首例隧道水平冻结施工。
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