赵固二矿风井筒穿过的冲积层厚度达到528.85m，地质、水文地质条件复杂，冻结设计和施工难度较大。
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528.85m，地质、水文地质条件复杂，冻结设计和施工难度较大。
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.
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