..整理文本整理文本.整理文本长宁区富春苑住宅用房项目三、四期降水施工专项方案上海市机械施工有限公司二零一三年七月目录TOC\o"1-3"\h\z\uHYPERLINK\l"_Toc363717792"1、工程概况PAGEREF_Toc363717792\h5HYPERLINK\l"_Toc363717793"1.1工程地理位置PAGEREF_Toc363717793\h5HYPERLINK\l"_Toc363717794"1.2工程概述PAGEREF_Toc363717794\h5HYPERLINK\l"_Toc363717795"1.2.1建筑简况PAGEREF_Toc363717795\h5HYPERLINK\l"_Toc363717796"1.2.2围护结构概述PAGEREF_Toc363717796\h5HYPERLINK\l"_Toc363717797"1.3周边环境及工程地质概况PAGEREF_Toc363717797\h6HYPERLINK\l"_Toc363717798"1.3.1周边环境条件PAGEREF_Toc363717798\h6HYPERLINK\l"_Toc363717799"1.3.2工程地质情况PAGEREF_Toc363717799\h6HYPERLINK\l"_Toc363717800"1.4工程参建单位PAGEREF_Toc363717800\h9HYPERLINK\l"_Toc363717801"1.5工程目标PAGEREF_Toc363717801\h9HYPERLINK\l"_Toc363717802"2、编制依据PAGEREF_Toc363717802\h9HYPERLINK\l"_Toc363717803"2.1国家标准：PAGEREF_Toc363717803\h9HYPERLINK\l"_Toc363717804"2.2地区规范：PAGEREF_Toc363717804\h9HYPERLINK\l"_Toc363717805"2.3行业标准：PAGEREF_Toc363717805\h10HYPERLINK\l"_Toc363717806"2.4相关资料PAGEREF_Toc363717806\h10HYPERLINK\l"_Toc363717807"3、降水方案设计PAGEREF_Toc363717807\h10HYPERLINK\l"_Toc363717808"3.1设计思路PAGEREF_Toc363717808\h10HYPERLINK\l"_Toc363717809"3.2降水目标PAGEREF_Toc363717809\h11HYPERLINK\l"_Toc363717810"3.3基坑内疏干井设计PAGEREF_Toc363717810\h11HYPERLINK\l"_Toc363717811"3.3.1需抽地下水容积储存量的计算PAGEREF_Toc363717811\h11HYPERLINK\l"_Toc363717812"3.3.2基坑抽水量的确定原则PAGEREF_Toc363717812\h11HYPERLINK\l"_Toc363717813"3.3.3降水井及观测井数量的布置PAGEREF_Toc363717813\h12HYPERLINK\l"_Toc363717814"3.3.4平面布置PAGEREF_Toc363717814\h12HYPERLINK\l"_Toc363717815"3.3.5坑内降水井工作量设计结果分析PAGEREF_Toc363717815\h12HYPERLINK\l"_Toc363717816"3.3.6抽水量计算PAGEREF_Toc363717816\h12HYPERLINK\l"_Toc363717817"3.3.7抽水天数计算PAGEREF_Toc363717817\h13HYPERLINK\l"_Toc363717818"3.3.8降水井结构PAGEREF_Toc363717818\h13HYPERLINK\l"_Toc363717819"4、降水施工工艺PAGEREF_Toc363717819\h13HYPERL