县人民医院扩建综合病房楼降水施工方案

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1、目录一、工程概述·································································3二、周边环境条件····································································3三、场内工程地质条件····································································3四、编制依据···················································

2、·················4五、降水方案选择·······························································4六、井点降水相关计算·························································4七、主要降水设备·······························································5八、井点施工方法·················································

3、··············6九、工期目标················································7十、质量标准及质量保证措施································································7十一、危险点分析···············································8十二、安全生产及文明施工措施································································8十三、环

4、保措施················································9十四、平面布置示意图················································109县人民医院扩建综合病房楼降水施工方案一、工程概述工程名称：某县人民医院扩建综合病房楼建设单位：某县人民医院设计单位：监理单位：勘察单位：施工单位：本工程位于某县人民医院老院区原儿科病房楼位置，地上12层，无地下室，总建筑面积11874.80m2，柱下桩基础，地上为框架剪力墙结构，建筑总高度49.90m。建筑结构安全等级二级，建筑抗震设防类别乙类，

5、框架抗震等级二级，剪力墙抗震等级一级。二、周边环境条件本工程现场周边情况：建筑物东侧：规划路建筑物南侧：病房楼建筑物西侧：围墙（围墙外是泥浆池）建筑物北侧：规划区三、场内工程地质条件根据山东正元建设工程有限责任公司2010年2月提供的《某县人民医院扩建综合病房楼岩土工程勘察报告》，揭示本场地岩土层结构特征自上而下分层描述如下：地层结构：层号岩性厚（m）Fka(kpa)Qsik(kpa)Qpk(kpa)1素填土0.80-1.202粉土2.90-3.7080253粉质粘土0.80-1.3090304粉土0.90-2.2090405粉质粘土1.20-2.40100406粉土

6、1.10-3.10130457粉质粘土5.90-7.90100458粉土6.60-9.90120509粉质粘土3.70-8.10140489县人民医院扩建综合病房楼降水施工方案10粉土1.60-2.401504511粉砂5.10-6.501605570012粉质粘土最大厚3.60m,最大深度45.00m四、编制依据(1)、某县人民医院扩建综合病房楼设计文件(2)、《水电施工质量检验及评定标准》SL176-2007(3)、《建筑与市政降水工程技术规范》JGJT111-98(4)、《建筑施工手册》(5)、业主提供的周边环境等相关资料五、降水方案选择基础平面基底长度约为59

7、m，宽度约为22.5m。基础埋深平均约为2.3m，即桩顶平均标高相当对-0.000标高约-2.9m，结合本工程地处低洼，基坑含水量较大，土体渗水慢，工期紧的特点，采用轻型井点降水法，施工场地轻型井点环闭圈布置，并结合基坑安排降水井点，采用轻型井点进行降水，可达到理想降水效果。井点分布详见附图。六、轻型井点降水相关计算相关公式：Q=1.366K(2H-S)S/(lgR-lgx0)Q---------井点系统的涌水量（m3/d）;K---------土壤的渗透系数（m/d）;粉土取0.1m/d-0.5m/d。H---------含水层厚度（m）;S---