The Heihe River project's excavation volume is huge from the original wing wall design for the right-hank spillway tunnel, which increased investment.
The Heihe River project's excavation volume is huge from the original wing wall design for the right-hank spillway tunnel, which increased investment.
摘要黑河水利枢纽在设计与施工过程中基础开挖量较大，增加了工程投资。