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某建筑的基坑工程开挖面积大,开挖范围内土层分布差异大,地质情况复杂,周边邻近建筑物、市政道路和斜山坡地等环境不同。根据场地条件,基坑采用7个代表性支护剖面进行联合支护,支护结构既切实际又经济合理;分析基坑施工面临挖孔桩流泥、排桩间塌陷、长边效应、斜山坡加固和防空洞等施工难点,并且制定相应的解决措施;通过开展基坑施工安全监测,有效地实施信息化设计与施工,保证了基坑和周边环境的安全。
The excavation area of a foundation pit of a building is large, the distribution of soil layers in the excavation range is large, the geological conditions are complex, and the surrounding environments such as adjacent buildings, municipal roads and slopes are different. According to the site conditions, the foundation pit adopts 7 representative support sections for joint support. The support structure is practically and economically reasonable. The construction of the foundation pit is confronted with the problems such as the flow of mud, the collapses between piles, the long edge effect, Slope reinforcement and air-raid shelters and other construction difficulties, and to develop appropriate solutions; through the construction of pit safety monitoring, the effective implementation of information design and construction to ensure the safety of the foundation pit and the surrounding environment.