A.大于上覆土自重壓力與上部結(jié)構(gòu)荷載壓力之和 B.大于上覆土自重壓力與承壓壓力之和 C.大于上覆土自重壓力與附加壓力之和 D.小于上覆土自重壓力與附加壓力之和
A.2.4 B.3.0 C.4.0 D.5.0
A.12~24m B.15~20m C.20~35m D.25~45m