基坑围护降水及土方开挖专项施工方案.doc

基坑围护、降水及土方开挖工程专项施工方案Special onstruction Scheme of Foundation Ditch Support, Precipitation and Earthwork Excavation Engineering 一、工程概况Project Overview 1.1 概述Summary 工程名称：上海联恒异氰酸脂有限公司MDI扩建项目工艺装置土建工程、 Project ame：Lian heng isocyanate resin co., LTD. Shanghai MDI expansion devices is civil engineering 工程地址：上海市漕泾化工区楚华路25号 Project Address: Shanghai caojing chemical OuChuHua road no. 25 建设单位：上海联恒异氰酸脂有限公司 The construction units: Shanghai lian heng isocyanate resin co., LTD 设计单位：上海科元燃化工程设计有限公司 Design unit: Shanghai yuan combustion engineering design co., LTD 勘察单位：上海岩土工程勘察设计有限公司 Prospecting units: Shanghai geotechnical engineering survey and design co., LTD 施工单位：中国核工业中原建设有限公司 Construction unit: China nuclear industry zhongyuan construction co., LTD 监理单位：上东洋工程（上海）有限公司 Supervision units: the Oriental engineering (Shanghai) co., LTD 1.2工程概况Project Overview：本工程位于上海市漕泾化工区楚华路25号，上海巴斯夫聚氨酯有限公司内的A400地块上。而上海联恒异氰酸脂有限公司MDI扩建项目工艺装置土建工程，由MDI合成单元、MDI初期雨水池、MDA初期雨水池、MDA处理单元、雨淋阀室和管架五大单元组成。 This project is located in Shanghai City Caojing Chemical District Chu Hua Road No. 25, Shanghai BASF Polyurethane Co. Ltd in A400 block. And Shanghai Lianheng ISO cyanate grease Co., Ltd. MDI expansion project process device for civil engineering. By synthesizing MDI unit, MDI early rain pool, MDA in the early rain pool, MDA treatment unit, the deluge valve chamber and tube frame five unit composed. 1.3 基坑概况Foundation Ditch Overview ： 1.3.1 MDI合成单元Synthetic unit （1）光气隔离舱、HCL吸收及尾气处理的垫层底标高-2.25m，板底厚为1200mm，垫层厚100mm，建筑面积为638.44m2。本工程设计标高100.000m为±0.000所应对的绝对标高为吴淞标高+4.500m，场地内部自然地面绝对标高约为+4.500m，即为相对标高±0.000m,则开挖深度为2.25m。其中，水池的垫层底标高-5.90m，板厚为1000mm，垫层厚100mm，建筑面积为31.59㎡。本工程设计标高100.000m为±0.000所应对的绝对标高为吴淞标高+4.500m，场地内部自然地面绝对标高约为+4.500m，即为相对标高±0.000m,则开挖深度为5.9m。 (1) The phosgene compartment, HCL absorption and tail gas treatment of cushion bottom elevation of 2.25 m, the bottom of the plate thickness is 1200 mm, cushion thickness of 100 mm, with a construction area of 638.44 m squared. This engineering design elev