大坝土石方开挖施工方案

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1、目录1编制依据及编制原则...................................................................................................32工程概述.......................................................................................................................32.1施工范围.....................................................

2、...........................................................32.2工程地质条件........................................................................................................32.3施工布置................................................................................................................32.4

3、主要工程量............................................................................................................43开挖程序和方法...........................................................................................................53.1开挖施工程序..........................................................

4、..............................................53.2土石方施工方法....................................................................................................64大坝及放空洞、取水洞进出口开挖...........................................................................74.1大坝及放空洞、取水洞开挖施工分区分层..........................

5、..............................74.2土石方明挖............................................................................................................85支护工程.....................................................................................................................125.1施工布置..................

6、............................................................................................125.2施工程序..............................................................................................................125.3锚杆施工.............................................................................

7、.................................135.4喷护施工...............................................................................................................146施工布置..........................................................