明挖扩大基础基坑开挖时，土方采用挖掘机开挖，并由人工配合进行边坡修理、基坑顶面排水沟的修建等辅助工作。

For open spread foundation, the pit is excavated by excavators for earth work with manpower to trim the side slope and build the ditch on top of base pit.

youdao

明挖扩大基础基坑开挖时，土方采用挖掘机开挖，并由人工配合进行边坡修理、基坑顶面排水沟的修建等辅助工作。

For open spread foundation, the pit is excavated by excavators for earth work with manpower to trim the side slope and build the ditch on top of base pit.

youdao