xxx建设项目
基坑支护与降水工程
专项施工方案
xxx有限公司 二○ 年 月
目录
第一章 工程概况 ····································································································································· 1 1.1工程说明 ··············································································································································· 1 1.2基坑支护施工平面布置图 ····················································································································· 2 1.3施工要求 ··············································································································································· 3 1.4技术保障条件 ········································································································································ 3 第二章 编制依据 ····································································································································· 3 2.1使用规范标准 ········································································································································ 3 2.2相关规范性文件 ···································································································································· 4 2.3相关资料软件 ········································································································································ 5 第三章 项目组织机构及施工计划 ············································································································· 5 3.1 施工组织机构 ······································································································································· 5 3.2 进度计划 ·············································································································································· 6 3.3 材料计划 ·············································································································································· 6 3.4 设备机具计划 ······································································································································· 7 第四章 施工工艺技术 ······························································································································ 8 4.1 降水工程 ············································································································································ 8 4.2 基坑支护工程 ··································································································································· 13 第五章 施工安全文明保证措施 ··············································································································· 27 5.1组织保障措施 ······································································································································ 27 5.2技术措施 ············································································································································· 29 5.3监测监控措施 ······································································································································ 40 第六章 施工管理及作业人员配备和分工 ································································································ 45 6.1施工管理人员 ······································································································································ 45 6.2专职安全生产管理人员 ······················································································································· 46
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6.3特种作业人员 ······································································································································ 46 6.4劳动力计划·········································································································································· 46 第七章 验收要求 ····································································································································· 46 7.1验收标准 ············································································································································· 46 7.2验收程序 ············································································································································· 48 7.3验收内容 ············································································································································· 49 7.4验收人员 ············································································································································· 50 第八章 应急处置措施 ······························································································································· 50 8.1应急预案的方针与原则 ······················································································································· 50 8.2应急预案工作流程图 ··························································································································· 50 8.3事故应急物资准备 ······························································································································ 52 8.4应急救援路线 ······································································································································ 53 8.5应急救援原则与流程 ··························································································································· 53 8.6事故报告制度及流程 ··························································································································· 54 8.7应急救援预案的启动与关闭 ················································································································ 54 8.8应急救援的实施 ·································································································································· 55 8.9事故应急处理步骤 ······························································································································ 55 8.10事故应急救援具体操作 ····················································································································· 56 第九章 计算书及相关施工图纸 ··············································································································· 58 9.1 计算书 ················································································································································ 58 9.2 相关施工图纸 ····································································································································· 58 第十章 编制人员、审核人员名单及职称、职务 ····················································································· 58 10.1 编制人员、审核人员名单及职称、职务 ··························································································· 58
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第一章 工程概况
1.1工程说明 1.1.1工程概况
本项目位于 ，交通较便利。拟建建筑为 建筑， 该建筑 ，拟采用 结构。
根据住房城乡建设部办公厅关于实施《危险性较大的分部分项工程安全管理规定》有关问题的通知〔建办质（2018）31号文）〕，开挖深度超过5m的基坑（槽）的土方开挖、支护、降水工程，属于超过一定规模的危险性较大的分部分项工程范围。本工程基坑开挖深度 m，属于超过一定规模的危险性较大的分部分项工程，需编制专项施工方案并经专家论证。
根据《岩土工程勘察规范》（GB50021-2001）2009年版、《高层建筑岩土工程勘察标准》（JGJ/T72-2017）相关规定，结合拟建建筑物性质及场地地质情况，综合确定：工程重要性等级为 级，支护结构安全等级为 级。
各参建单位如下：
建设单位： 施工单位： 设计单位： 地勘单位： 监理单位： 专业分包单位： 1.1.2场地地质条件
据现场勘探资料，构成场地的地层为： 。其岩性特征自上而下描述如下：（地勘报告摘录） ……
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1.1.3、场地水文地质条件（摘录地勘报告相关内容）
……
1.1.4周边建设及道路情况
拟建场地位于 之间。 ……（项目建筑设计相关描述）
总体上看，本项目周边环境较为复杂。周边建筑及地下管线分布情况需进一步查明, 且明确每一条管线走向，防止在施工过程中地下管线被破环而影响周边建筑。 1.1.5基坑支护设计
本项目±0.000标高相当于绝对标高 m，现场场地标高约为 m，基坑开挖深度 m。支护结构安全等级定为 级，重要性系数为 。
根据基坑周边的环境条件，本工程基坑附加荷载取值情况如下：基坑上口线周边范围内地面荷载按 kPa设计；建筑物、道路荷载取值详《xxxx建设项目基坑支护与排水工程设计施工图设计说明》。
1.2基坑支护施工平面布置图
（根据项目现场情况进行施工总平面布局）
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xxx项目基坑支护及降水工程专项施工方案
