昆明市轨道交通首期土建工程施工13标【昆明北站至北辰小区项目】金星站基坑开挖专项施工方案中铁十五局集团有限公司昆明轨道交通首期工程土建施工13标项目经理部2010年11月25日目录第一章编制说明及依据..................................11.1．编制说明............................................................................................................................................11.2．编制依据............................................................................................................................................1第二章工程概况........................................32.1．工程简介............................................................................................................................................32.2．围护结构形式....................................................................................................................................32.3．基坑周边环境....................................................................................................................................52.4．主要的工程量....................................................................................................................................52.5．工程地质与水文地质条件.................................................................................................................62.5.1．地形地貌和气象概况.............................................................................................................62.5.2．工程地质情况........................................................................................................................62.5.3．水文地质特征........................................................................................................................82.5.4．不良地质................................................................................................................................8第三章施工部署.......................................103.1．施工进度计划..................................................................................................................................103.2．资源配置计划..................................................................................................................................103.3．土方开挖施工方法...........................................................................................................................11第四章施工降水.......................................134.1．施工准备..........................................................................................................................................134.2．降水井布置及降水试验...................................................................................................................134.3．工艺流程与施工程序......................................................................................................................13第五章基坑开挖方案及施工工艺.........................145.1．冠梁、第一道支撑梁施工...............................................................................................................145.1.1．施工段划分..........................................................................................................................145.1.2．施工工艺....................................................................................................
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