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.
掘进工艺包括主要作业和辅助作业,其中主要作业包括破岩、装岩、运输、支护,辅助作业包括通风、铺设轨道、挖掘排水沟、铺设管线等等。
The excavation technique consists of main operations including breaking, loading, haulage and support, and auxiliary work including ventilation, laying the track, digging ditches and laying pipes etc.
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