地下管道施工方案正式版

目录Catalogue

一、概述General description (2)

二、管沟开挖及管基础处理Trench excavation and foundation treatment ·3

三、钢管安装Steel pipe installation (11)

四、水压试验Hydraulic test (17)

五、管道防腐Pipe anticorrosion (21)

六、检查井、水封井和雨水口Inspection well, water closing well and inlet24

七、质量控制Quality control (26)

八、交工验收Take over (27)

九、劳动力需用计划Manpower schedule (28)

十、施工机具及手段用料需用计划Construction tools and material schedule29 十一、施工总体进度计划General construction schedule (31)

一、概述

一、Introduction

1.1、乙烯装置地下管道主要包括循环冷却给水管道SW、循环冷却回水管道RW、中间冷却给水管道IW、污染雨水及生产污水管道SD、高压消防水管道FW、清净雨水管道ND。管道材质有碳钢管、玻璃钢管。地下管道安装工程量见表1。

The underground piping of ethylene complex mainly refers to the installation of piping for recycling cooling water, industry water, firefighting water, sewage and rain water pipelines. The piping material includes steel pipe, cast iron pipe, and sand inclusion spiral glass fiber reinforced plastic pipe etc. The workload of installation of underground piping can refer to the Table 1.

地下管道安装工程量一览表表1

Table 1 List of quantity of underground piping installation

1.2、Reference:

1.2.1、设计图纸SEI DWG.NO 。（3102-7900-S-1～35）Design drawings

1.2.2、《给水排水管道工程施工及验收规范》。（GB 50268-97）<>

1.2.3、《埋地给水排水玻璃纤维增强热固性树脂夹砂管管道工程施工及验收规程》。

（CECS 129：2001）<

supply and sewerage engineering with underground glass fiber reinforced

thermosetting resin mortar pipes>>

1.2.4、《钢质管道聚乙烯胶粘带防腐层技术标准》。（SY/T0414-98）<

of polyethylene tape coating for steel pipeline>>

1.2.5、《给水排水管标准图集合定本S1》（上、下册2002版）<

sewerage pipelines standard collection of drawings >>

二、管沟开挖及管基础处理

二、Excavation of piping trenches and treatment of piping foundation

2.1、定位放线

Positioning setting-out

2.1.1、开工前业主主管部门应提供装置的坐标方格网和永久水准位置及高程数值，并把高程引至装置预先选择好的位置。

Before starting, construction personnel should ask for the coordinate grid net, permanent

benchmark and elevation of the equipment from the Owner’s authority department. The elevation should be led to the pre-selected location.

2.1.2、平面位置应以地下管道中心线及坐标进行放线，控制桩应设在管道敷设中心线两侧，距中心线不少于3m且便于观察的地方。沿管道铺设方向应设置临时水准点，且每隔200m不宜少于一个。

Plane locations should be set-out according to the center line and coordinate of the underground piping. Control piles should be set up at both sides of the center line of the piping, and at the location more than 3m away from the center line and easy for observation. At least one reference point should be setup each 200m according to the pipelines.

2.1.3、测量人员按施工要求,根据控制桩定出管线中心位置，沿管线沟槽开挖宽度在地面上撒灰线标明开挖边线。

Survey personnel determine the location of piping center according to control pipes based on construction requirements. Lime line is drawn on the ground along the excavation width to indicate the edge line of the excavation.

2.2、沟槽开挖Trench excavation

2.2.1、沟槽开挖时应根据所放白灰线进行，施工中采用反铲挖掘机，开挖时应在设计槽底高程以上保留200mm余量，防止超挖,余量用人工清挖。对于不宜采用机械开挖的部位采用人工开挖。

Trenches should be excavated as per the lime line set out. Reverse shoveling excavator is used in construction. 200mm margin should be reserved above the design bottom elevation. Over-excavation should be avoided and the margin should be excavated by man power. The location improper for machine excavation should be excavated by man power.

2.2.2、沟槽出现超挖或扰动情况时，应及时处理，用碎石回填压实，压实密度不低于天然地基。当沟槽底部为淤泥时，应比设计高程深挖300mm，然后用碎石回填到设计高程。槽底高程的允许偏差为±20mm。

The over excavation and disturbance of trenches should be treated in time. If the over excavation of dry trenches is within 150mm, it can be backfilled and compacted with original earth, and the compacting density should not be lower than that of the natural ground.

2.2.3、沟槽开挖时其两侧沟壁放坡坡度及底宽要求，应严格执行规范规定。当边坡无支撑且坡顶无负荷时，沟槽开挖坡度不低于1：1.0。如开挖放坡受限和土方转运有困难时，