飽和粘土地基,厚15m,其下為砂層。設(shè)計(jì)采用砂井預(yù)壓法,設(shè)計(jì)長15m,井距250m,梅花形布置。已知Cvc=Cb=1.5×10—3cm2/s
A.35% B.67% C.79% D.86%
A.35% B.67% C.79% D.86%
A.40cm B.60cm C.80cm D.100cm