The paper provides the key factors to control the pit construction by restricting heave of the bottom soil and minimizing tunnel displacement.
文章阐述了如何通过控制基坑施工主要影响参数，进而限制坑底土体隆起，减小隧道位移。
They need some machinery to heave the sunken boat up from the bottom of the lake.
他们需要一些机械来把沉船从湖底打捞上来。
Based on the theory of rock mechanics that applied in country rock kerf, and using bolt support can remove the heave of bottom, which gets good effect in practice.
施工中应用巷道围岩切缝法的岩石力学理论分析，采用锚杆支护法解决底板臌起现象，收到良好效果。
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