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【简答题】
厚度为10m的粘土层的边界条件如图所示,上下层面处均为排水砂层,地面上作用着无限均布荷p=196.2kPa,已只粘土层的孔隙比e=0.9,渗透系数k=2.0cm/y,压缩系数a=0.025× 10 -8 /kPa.试求:(1)荷载加上一年后,地基沉降量是多少厘米?(2)加荷后历时多久,粘土层的固结度达到90%?
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A.
①②③
B.
①②③④
C.
②③④
D.
①③④
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A.
Ⅰ～Ⅲ
B.
Ⅰ～Ⅳ
C.
Ⅱ～Ⅳ
D.
Ⅰ、Ⅲ、Ⅳ
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A.
Ⅰ～Ⅲ
B.
Ⅰ～Ⅳ
C.
Ⅱ～Ⅳ
D.
Ⅰ、Ⅲ、Ⅳ
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A.
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B.
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D.
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A.
I~III
B.
I~IV
C.
II~IV
D.
I、III、IV
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