Indonesia 1项目基坑采用跃层逆作法施工,以此为背景,针对于火山堆积区域土体孔隙度大、含水率高等特殊水文地质特征,对逆作施工技术进行创新应用。对钢管柱垂直度控制、地下大空间高效取土、超深基坑地下水控制等跃层逆作施工关键环节制定针对性措施,基坑监测结果与计算结果基本吻合,保证了逆作施工质量,节约了工期、成本,拓展了逆作施工应用领域。 Based on this background, the construction of the foundation pit of Indonesia 1 is carried out by using the method of thermocline inversion. Based on the special hydrogeological features with large porosity and high water content in the volcanic accumulation area, the application of the technology of reverse construction is innovated and applied. On the vertical control of steel columns, large underground space and efficient extraction of soil, ultra-deep foundation pit groundwater control and other key aspects of the construction of key steps to develop specific measures, pit monitoring results and calculated results are basically consistent to ensure the quality of the adverse construction, Saving construction time and cost, and expanding the field of application of reverse construction.