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【单选题】
一饱和粘性土试样在三轴仪中进行固结不排水试验，施加周围压力Δσ3=200kpa，试件破坏时的主应力差σ1-σ3=280kPa，测得孔隙水压力μf=180kPa，如果破坏面与水平面的夹角为57°，试求破坏面上的法向应力和剪应力以及试件中的最大剪应力。()A.
σ=283kpa，τ=127kpa，τmax=140kpa
B.
σ=183kpa，τ=127kpa，τmax=140kpa
C.
σ=283kpa，τ=127kpa，τmax=240kpa
D.
σ=283kpa，τ=227kpa，τmax=140kpa
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