长江引水三期陆域水库库区开挖方式及土方处置研究

Research on possible excavation methods and earthwork disposal of land-based reservoir in III Phase project of Yangtze diversion works

长江引水三期陆域水库库区采用开挖成库形成库容。本文针对目前库区现状地面高程和地下水位均较高,结合开挖方式的选择,研究和解决大工程量土方的弃土方案。通过社会化解决方案和利用弃土绿化造地以及抬高横沙东滩滩地,有效利用了弃土资源,降低工程造价。为今后上海地区解决大方量工程弃土提供了一种解决思路。

In Yangtze diversion works, Phase Ⅲ, the land-based reservoir will be constructed by excavation.According to the existing situation of the reservoir area, and considering the excavation method, hereby this report focus on research and handle the earthwork abandon treatment in the huge building area, great project amount and high workload of earthwork construction. Depending on the combined treatment such as social treatment, using abandon earthwork in reclamation, and heighten the elevation of shoal of the east Hengsha beach, the abandon earthwork will be used effectively. Simultaneously, the difficulty of construction and the cost of project will be decreased. It is a successful case for using the abandon earthwork in Shanghai.