盐田国际行政办公大楼场地浅层由填石填海而成，填石层厚度约10 m，填石粒径20～80 cm；为了满足地下室结构和桩基础施工需要，基坑开挖深度一般不小于8.7m，局部达到14.4 m，基坑开挖支护难度极大；因此，选择合适的基坑支护方案就显得尤为重要，本工程从众多支护方案中选择了放坡开挖加封水帷幕方案，从设计计算上确保基坑及周边建筑物安全，从后期实施看，方案经济合理、安全可靠。%Yantian site administration office building of international shallow by rock fillformed by reclamation, filling layer thickness of about 10m, fill out the particle size 20cm~ 80cm; in order to meet the need of the basement structure and the pile foundation construction, generally not less than 8.7m, the depth of excavation, local reach 14.4m, supporting extremely difficult excavation;therefore, it is particularly important select the appropriate foundation pit supporting scheme, this project from a number of supporting scheme was selected in "slope excavation sealed water curtain scheme", to ensure the safety of foundation pit and surrounding buildings from the design calculation,from the late implementation, reasonable economy, safety and reliable solution.
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