Through research, the designed scheme of upward excavation and concrete placement in adit was changed to downward excavation and stratified concrete placement for structural blocks of wide shaft well, fullfiling the design requirement.
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美
- 為此,經(jīng)研究將原設計的由下向上平洞開(kāi)挖澆筑混凝土方案改為以寬豎井為結構分塊單元的由上向下開(kāi)挖和由下向上分層澆筑混凝土的施工方案,達到了設計效果。
