保定市瑞达钢模具制造有限公司

U型槽灌溉渠施工方法

Construction method of U groove irrigation canal

a、土方开挖：

A and earthwork excavation:

由于U型槽灌溉渠开挖断面较小，拟分段在按设计高程放样后采用人工开挖，一次性开挖到底，并及时验槽进入下一工序施工。每个施工作业段以50米左右为宜。

Due to the small section of the U channel irrigation canal, the section should be excavated manually after the design elevation is set aside, and the excavation will be carried out in a single time, and the construction of the next procedure will be carried out in time. Each construction section should be about 50 meters.

b、断面土方回填：

Backfilling of B and section earthwork:

由于灌溉渠U型槽安装高程局部比两侧田地高，需补填土方才能进行灌渠型槽安装。土方回填时拟采用人工运土木夯夯实，填土施工先按设计填土断面制作一可装卸的钢模，在填土现场按设计高程安放钢模板后，再由人工把土料填到模板内，然后用人工木夯夯实，符合设计要求压实度后即可拆除模板，进入下一层土回填。

The irrigation canal U groove installation elevation than the two local fields, Butian to ditch groove installation earthwork. When the artificial backfill soil transportation bettle compaction, filling construction according to the design of filling steel mould making section capable of loading and unloading, fill in the scene according to the design elevation of placing steel template, and then by the artificial soil material to fill in the template, and then use the artificial bettle tamp, compaction after removal of the template in accordance with the design requirements. In the next layer of soil backfill.

c、砂垫层回填：

C and sand cushion backfill:

基槽验收及断面补填土后，按设计断面用回填5cm砂垫层，回填时应摊铺均匀，并用小板夯拍打密实即可。

Fill fill trench approval and section, according to the design section with 5cm backfill sand cushion, backfill should be spread evenly, and with a small dynamic compacting can beat.

d、U型槽安装：

Installation of D and U groove:

槽底砂垫层铺筑完成后，即着手进行U型槽安装。U型槽采用厂家加工定做，按设计图纸要求的尺寸进行加工，分上口尺寸的规格，槽壁厚度4cm，按1m一节进行加工。安装时，采用人力打运轻拿轻放，防止碰坏棱角。U型槽座放在砂垫层上，要注意槽底高程符合设计高程使之符合设计要求。U型槽接缝，在槽底高程复核符合设计要求并挂牢后，采用M10砂浆勾缝。

After the completion of the sand cushion on the bottom of the tank, the installation of the U groove is started. The U groove is processed by the manufacturer and customized, according to the size required by the design drawings, and the size of the opening size, groove wall thickness 4cm, according to 1m section processing. When installing, use manpower to transport, light handle, to avoid touching the edges and corners. U groove seat is placed on the sand cushion, and it should be noted that the height of the trough bottom conforms to the design elevation, so that it meets the design requirements. U groove seam on the bottom elevation check meets the design requirements and hang. After using M10 mortar.

e、U型槽顶压顶砼：

E, U type tank top concrete:

每个作业段(50米)U槽安装完后，即可进行压顶砼浇筑。压顶砼标号为C15。砼采用拌和站统一拌制后，由机动翻斗车转运到现场，再由人工进行浇筑。由于砼浇筑层厚较溥为l2cm，采用人工用铁抹子钢筋撬插捣的方式浇筑，外表面由人工用铁抹子抹光、压实，使之符合设计尺寸要求。