高压旋喷注浆处理地基沉降的实践

Practice in Subsidence Foundation Treatment with High Pressure Jet Grouting

株洲市某程控电话楼的部分地基为回填的砂卵石垫层，因该垫层的异常沉降导致楼房大面积开裂，为此，对该楼房的砂卵石垫层地基采用了旋喷注浆的加固处理措施，使不均匀沉降得到了有效的控制。文章中叙述了注浆加固的方案、设计、施工和所取得的效果。

s a part of the foundation of a programed control telephone exchange building in Zhuzhou city was a refilled sand and gravel layer,the abnormal subsidence of the layer resulted in serlous cracking of the buiding.Therefore,jet grouting was used as a treatment measure to consolidate the refilled sand and gravel layer of the building foundation and get the uneven subsidence of the foundation effectively controlled.This paper described the scheme of jet grouting,its design,operation and the obtained results