摘要
针对深厚卵砾石层中以往压浆施工工艺的不足,提出了改进方法:当卵砾石层充填物为细粒土时,采用孔眼直径小、间距小的套管;当其为粗粒土时,则用孔眼直径大、间距大的套管。通过现场试验对比分析,该工艺可以提高工效,保证质量。
For the insufficiency in former grouting construction technology in deep gravel layer,this paper puts forward improvement method.When gravel layer is filled with fine-grained soil,small-hole-diameter and small-distance casing tube shall be adopted;when it is filled with coarse-grained soil,large-hole-diameter and large-distance casing tube shall be adopted.Through comparative analysis from site test,this new technique can improve efficiency and ensure quality in construction.
出处
《路基工程》
2010年第3期212-214,共3页
Subgrade Engineering
关键词
卵砾石层
止水压浆
施工工艺
套管孔眼
工效
质量
gravel layer
sealing grouting
construction technology
casing hole
working efficiency
quality
