总结了冻结法施工的一些成功因素。
The security of freezing wall is the key problem of freezing shaft sinking 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。
The freezing method became the preferred shaft sinking method when constructing in thick alluvium and unstable aquifer.冻结法已成为深厚冲积层及不稳定含水层的首选施工方法。
This text introduced the practice method of the box permanent steel petroleum derrick shaft sinking in the construction of vertical shaft pit shaft.在立井井筒建设中,我们在原设计的基础上,对箱形永久钢井架凿井的实际方法作了改进。