A.先開(kāi)挖再支撐 B.開(kāi)槽支撐先撐后挖 C.邊開(kāi)挖邊支撐 D.挖到槽底再支撐
A.基坑支護(hù)結(jié)構(gòu)設(shè)計(jì)計(jì)算工況B.基坑降水方案C.基坑支護(hù)結(jié)構(gòu)的材料D.基坑施工季節(jié)
A.8~20m B.12~28m C.10~30m D.16~32m