题目内容
(请给出正确答案)
[单选题]
回填土应分层夯实,每层厚度()m,管道两侧及管顶以上()m内的填土必须人工夯实,超过管顶()m,可使用小型机械夯实,每层松土厚度为()m。
A.0.2~0.3,0.5,0.5,0.25~0.4
B.0.25~0.4,0.5,0.2~0.3,0.5
C.0.5,0.5,0.25~0.4,0.2~0.3
D.0.2~0.3,0.5,0.25~0.4,0.5
提问人:网友wanghu9999
发布时间:2022-01-06
A.0.2~0.3,0.5,0.5,0.25~0.4
B.0.25~0.4,0.5,0.2~0.3,0.5
C.0.5,0.5,0.25~0.4,0.2~0.3
D.0.2~0.3,0.5,0.25~0.4,0.5
回填土应分层夯实,每层厚度0.2~0.3m,管顶以上()m内的回填土必须人工夯实。
A.0.25
B.0.5
C.0.6
D.0.8
A.应分层对称进行
B.采用夯实工具或机械夯实
C.轻型压实设备每层回填土的虚铺厚度300mm
D.检查井周围回填应沿井室中心对称进行,回填材料与井壁紧贴
E.管顶以上50cm范围内回填土表层的压实度不应小于95%
明洞拱背回填应对称分层夯实,每层厚度不得大于()m,其两侧回填的土面高差不得大于()m。
A、0.2 0.5
B、0.3 0.5
C、0.3 1.0
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