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宿迁市位于江苏省北部,市区主要为冲积平原地貌单元。该地下人防工程位于宿迁市区废黄河西侧约1km处,此地段为宿迁市新区的商业中心。人防地下室与周边主楼均设置地下连通口相接,起到地下枢纽作用,极具商业价值。场地上部地层主要为黄河泛滥冲积而形成的第四纪新近沉积土。基坑开挖深度15.0m,周边环境较复杂,地下水丰富,土层较软,易坍塌。设计时充分利用场地条件,并考虑节约投资、缩短工期而采用多种支护体系相结合的基坑支护方案。最终对理论计算和实测结果进行对比,岩土参数取值和计算模型均与实际情况基本吻合。
Suqian City is located in the northern part of Jiangsu Province, the urban area is mainly alluvial plain landscape unit. The underground air defense project is located about 1km west of the waste Yellow River in Suqian City, which is the commercial center of the new district of Suqian City. The basement of the civil air defense and the surrounding main buildings are connected with the underground communication port, which plays the role of underground hub and has great commercial value. The upper strata of the site are mainly Quaternary newly-formed sediments formed by the flooding of the Yellow River. Pit excavation depth of 15.0m, the surrounding environment is more complex, rich groundwater, soil soft, easily collapsed. Design time to make full use of the site conditions, and consider saving investment, shorten the duration and the use of a variety of support system combination of foundation pit support program. Finally, the theoretical calculation and the measured results are compared, the geotechnical parameter values and calculation models are basically in line with the actual situation.