钻孔灰土挤密桩在砂质湿陷性黄土中的应用

因灰土挤密桩法具有就地取材、以土治土、原位处理和费用较低的特点，在我国西北及华北等黄土地区已广泛应用。由于各地黄土性质的差异性，对于部分非典型性黄土，普通灰土挤密桩施工工艺不能满足要求，近年来，各地尝试采用不同的施工工艺来解决这一问题。本文结合工程实验，对钻孔灰土挤密桩在砂质湿陷性黄土中的施工工艺和应用效果进行了全面的分析，证明该工艺对砂质黄土进行地基处理是可行的，可达安全、经济、适用的效果。

Application of Drilling Soil Compaction Pile to Sandy Collapsible Loess

For local and suitable material, in-situ remediation, deep encryption and low cost, the technique of lime oil compaction pile has been used wildly in Northwest and NC where the loess covers. But the technique is flawed because of the differences of the loess properties, especially used in atypical loess areas. In recent years, different construction technology has been used to solve this problem. The paper describes that the technique of drilling in sandy lime-soil compaction pile used in sandy collapsible loess is security, economic and applicable for the comprehensive analysis of the effect of construction technology and application with experiments combining with engineering example.