Based on the damage of the outer wall, this paper analyzes the reason and law, and proposes the new concept of freezing design in thick overburden and the new construction method.
根据冻结井外壁被破坏的现象，深入分析和研究其中的规律，提出深厚表土冻结设计及施工方法的新思路和新方法。
The alluvium thickness of air shaft in Zhaogu No. 2 Coal Mine is up to 528.85 m. The geologic and hydrographic conditions are complex, so it is very difficult for freezing design and construction.
赵固二矿风井筒穿过的冲积层厚度达到528.85 m，地质、水文地质条件复杂，冻结设计和施工难度较大。
The design of freezing wall is the base of arrangement of freezing hole design and other freezing technical parameter design.
冻结壁设计是冻结孔布置设计和其他冻结技术参数设计的基础。
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