Bituminous concrete facings for earth and rockfill. 土石壩的瀝青混凝土面層。
In condition of meeting dam safety and structural requirements of the premise,how to optimize dam material subarea to save investment is an important issue. 在滿足壩體安全及結構要求的前提下,如何進行壩料分區設計以節省投資是高土石壩設計的重要課題。