earth excavation meaning in English

土方开挖
挖土方
挖土工程

Earth excavation by mud - pumping technique and construction supervision
土方开挖泵吸施工工艺及施工监控
Internal - shoring retaining structure and earth excavation construction of deep foundation pit in subway station
地铁车站深基坑内撑式围护结构及土方施工
Regarding foundation - pit scope of numerical analysis as a system ; settlement of foundation - pit boundary , displacement of retaining structure and swell of foundation - pit bottom as output of the system ; factors during construction of draining water , earth excavation and retaining structure as input of the system
为此视基坑数值分析范围为一个系统，基坑周边沉降、支护结构位移和坑底隆起为系统输出量，降水、开挖和支护施工各工况中变化的因素为系统输入量。