南水北调中线一期工程总干渠沙河南~黄河南新郑南段第三施工标段土方开挖方案批准：审核：编制：中国水利水电第二工程局有限公司南水北调中线一期工程新郑南段第三标段项目部2011年月日目录第一章编制依据.......................................................................................................................4第二章工程概况.......................................................................................................................42.1新郑南段整体概况...........................................................................................................42.2新郑南段三标概况...........................................................................................................42.3渠道工程概况...................................................................................................................42.4工程地质情况...................................................................................................................4第三章土方施工部署...............................................................................................................63.1部署原则...........................................................................................................................63.2施工准备...........................................................................................................................63.3开挖施工总体安排...........................................................................................................63.4施工方法概述.................................................................................................................103.5进度安排.........................................................................................................................103.6施工程序.........................................................................................................................10第四章土方开挖.....................................................................................................................114.1土方开挖方法.................................................................................................................114.2渠道土方开挖施工工艺.................................................................................................114.3施工排水.........................................................................................................................114.4场地清理.........................................................................................................................124.5施工道路布置.................................................................................................................1224.6建筑物土方开挖.............................................................................................................134.7开挖边坡保护措施.........................................................................................................134.8土料利用和弃渣措施.....................................................................................................13第五章土方开挖质量保证体系.............................................................................................145.1土方开挖前的质量检查和验收....................................................................................145.2土方开挖过程中的质量检查........................
