中文摘要：

厦门梧村山浅埋大跨隧道,要求下穿浦南片区密集建筑群,其工程难度国内外罕见。通过对现场房屋的抬升实践和监测分析发现：房屋注浆抬升可分为两个层次,即注浆止沉和注浆抬升。现场抬升试验表明：采用动态跟踪补偿注浆能够较好地实现房屋止沉,而房屋的抬升则极富挑战性。一方面房屋抬升必须以补偿注浆、止浆墙完成、地层加固密实为前提;另一方面还必须选取合适的注浆工艺、注浆量、压力、抬升孔分布、注浆深度等,才可能实现抬升。抬升过程监控还发现：地层抬升明显,房屋止沉效果良好;但房屋抬升呈波动趋势,最终房屋仍呈沉降趋势。该结果反应了注浆地层抬升与房屋抬升是不一致的,只有较大范围、稳定的、均匀的、不消散的地表抬升,才能形成安全有效的房屋抬升。通过相关的解析和数值方法,对抬升注浆参数进行初步优选以及对房屋抬升量进行预测,结果可以满足工程需要。

英文摘要：

Wucunshan Tunnel of Xiamen which is designed as shallow large span structure needs to go through dense buildings in Punan territory, and construction difficulties is unusual both at home and abroad. By in-situ building lifting test and monitoring, two levels of building lifting by grouting can be seen： the first level is controlling and cutting building subsidence, the second is named building lifting strictly. The in-situ lifting tests show that the first level can be achieved with dynamic tracking and retrieving grouting successfully, whereas the second level requires much more refined grouting techniques. On one hand, the fulfilling of building lifting must be on the premise of the first level of retrieving grouting, finishing wall for grouting, and enforcing foundation soil. On the other hand, it depends on adequate grouting technologies, grouting amount, pressure, arrangement of grouting holes, holes and depths, etc. Related monitoring results make clear that land lifting is standing out, and building subsidence is distinctly slowed down, however, building lifting is only light and fiuctuant, and finally trend to subside. And they also show that there is great difference between land and building liftings, only large range, stable, uniform, undissipated land lifting can make safe and effective building lifting, By analytical and numerical methods, lifting grouting parameters will be optimized and gained, and building lifting deformation can be predicted, which can generally meet the engineering needs.