[提要]  采用固化局部范围流砂层的方法解决超厚流砂层人工挖孔桩成孔问题，阐明加压灌浆处理人工挖孔桩成孔的设计机理，通过这一设计方法成功地实现了超厚流砂层人工挖孔桩作业施工。该方法操作简便，无噪音污染，无振动，快速，工程造价较其他处理方案低，特别适合在山区工业及民用建筑中使用。
[关键词]  人工挖孔桩  超厚流砂层  固结  局部固化法

A new method, called“the Local Fixed Process( I_FP)”,was successfully used in a real engineering example to resolve the hole-making of manual excavated pile in a complicated super-thick quicksand stratum.The concrete is filled into the manual excavated pile through super-thick quicksand stratum by an extra compression. Then the super-thick quicksand stratum is fixed in a small range.I_FP have many advantages such as simple, no noise, no vibrating, fast and cheap in construction. It suits to apply in mountaln area.
Keywords:  manual excavated pile; super-thick quicksand stratum; fix; LFP (the Local Fixed Process)

    参  考  文  献
1．范晓明．浅谈人工控孔桩穿过流砂层的施工．福建建筑，2000，66 (1)．
2．中国岩土锚固工程协会．岩土工程中的锚固技术．北京：地震出版社，1992．
3．刘正峰．地基与基础工程新技术实用手册．北京：海潮出版社，2000．
4．余调梅，叶舒麟，曹明葆等．岩土工程，北京：中国建筑工业出版社，1986