The security of freezing wall is the key problem of freezingshaftsinking in deep alluvium.
冻结壁的安全性是深厚冲积层中冻结凿井的关键问题。
2
In the artificial freezingshaftsinking project, the freeze design is a core technology, which relates to the entire freezing project success or failure.
冻结设计是人工冻结法凿井工程技术核心，关系到整个冻结工程的成败。
3
The freezing method became the preferred shaftsinking method when constructing in thick alluvium and unstable aquifer.