西藏某水电站引水隧洞砼衬砌施工组织设计

西藏某水电站引水隧洞砼衬砌工程 施工组织设计

西藏自治区某水电站 引水隧洞砼衬砌工程

施工组织设计

西藏某电站工程项目部

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西藏某水电站引水隧洞砼衬砌工程 施工组织设计

目 录

1编制说明 ································································································································· 4

1.1引水隧洞施工现状 ································································································ 4 1.2引水隧洞洞挖施工期地质预报 ················································································· 4 1.3措施计划涉及施工范围和项目 ················································································· 4

2工程概述 ································································································································· 4

2.1引水系统工程概况 ································································································ 4 2.2砼衬砌工程项目及主要工程量 ················································································· 6

3施工布置 ································································································································· 7

3.1施工规划············································································································· 7 3.2施工道路············································································································· 7 3.3供水、供电及施工通讯 ·························································································· 7

4施工总进度计划 ····················································································································· 8

4.1施工进度说明 ······································································································ 8

5资源配置 ······························································································································· 10

5.1设备计划··········································································································· 10 5.2劳动力计划 ······································································································· 10

6砼衬砌施工方法 ··················································································································· 11

6.1砼底板施工方法 ································································································· 11 6.2边墙顶拱砼施工方法 ··························································································· 11

7砼衬砌施工程序 ··················································································································· 11

7.1砼底板施工程序 ································································································· 11 7.2边墙顶拱砼施工程序 ··························································································· 11

8砼衬砌施工 ··························································································································· 12

8.1砼衬砌模板 ······································································································· 12 8.2砼拌和及运输 ···································································································· 12

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西藏某水电站引水隧洞砼衬砌工程 施工组织设计

8.3引水隧洞砼运输路线 ··························································································· 13 8.4底板砼浇筑 ······································································································· 13 8.5边墙及顶拱砼浇筑 ······························································································ 14 8.6砼浇捣·············································································································· 14 8.7拆（脱）模及砼养护 ··························································································· 14

9砼工程质量保证措施 ··········································································································· 15

9.1模板工程质量保证措施 ························································································ 15 9.2砼浇筑质量保证措施 ··························································································· 15

10灌浆施工 ····························································································································· 16

10.1回填灌浆 ········································································································· 16 10.2固结灌浆 ········································································································· 16

11回填、固结灌浆施工质量控制 ························································································· 17 12安全防护措施 ····················································································································· 18

12.1施工作业安全措施 ····························································································· 18 12.2施工道路（特别）安全防护措施 ··········································································· 19

13环境保护 ····························································································································· 19

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西藏某水电站引水隧洞砼衬砌工程 施工组织设计

1编制说明

1.1引水隧洞施工现状

某电站引水隧洞工程自三月十一日开工以来，现已完成1#施工支洞130延米，引水隧洞（1#工作面）490延米，2#施工支洞477延米。引水隧洞（2#工作面）96延米已开挖至调压井下游压力管道渐变段（管0+006）。引水隧洞（1#工作面）下游面~引水隧洞（2#工作面）上游面作余下约180延米，可望九月底贯通。

1.2引水隧洞洞挖施工期地质预报

引水隧洞洞挖至今其开挖范围约785m（引0+000~引0+778.026~管0+006），设代对隧洞围岩地质总体评价是：除（引0+000~引0+038）为Ⅳ类围岩，局部Ⅴ类外，隧洞其它已开挖段基本以Ⅲ围岩为主，局部夹杂Ⅳ类围岩、分布在沿线洞段。引水隧洞围岩地质情况详见本措施计划 1.编制依据 即5）某水电站地质预报

1.3措施计划涉及施工范围和项目

1)施工范围：引水隧洞(引0+000~引0+778.026)

2)施工项目：引水隧洞砼衬砌及引水隧洞回填灌浆和固结灌浆

2工程概述

2.1引水系统工程概况

西藏某水电枢纽工程引水系统布置在某与澜沧江之间，为一跨流域有压过水的地下建筑物，全长约1207米。引水系统主要包括引水隧洞、埋藏式调压室（交通洞与竖井组成）、压力管道（由上平段，斜井段及下平段，分、支岔组成）以及洞口工程。其中引水洞长778.026米。中间过渡段长34.694米。压力管道长426.837米。该系统取水口位于某挡水闸坝上游左岸约十米的岸坡上，施工高程3245米。隧洞压力管道出水口位于澜沧江发电厂房临近的连拉山坡脚下，施工高程3102米。调压室交通洞洞口位于澜沧江发电厂房出水口一侧的连拉山山坡上，施工高程3275米。引水隧洞辅助施工作业面即1#、2#施工支洞洞口位于某挡水闸坝下游左岸一侧，施工高程3240~3242米。二辅

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