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Common problems and solutions in drainage pipeline construction

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更新时间:2019年06月21日06:57:35 打印此页 关闭 Clicks: 395 Updated: June 21, 2019 06:57:35 Print this page Close

Common problems and solutions in drainage pipeline construction

After the concealment operation is completed and accepted, the trench can be backfilled. The trench backfill should be performed symmetrically from both sides, and ensure that the backfill data meets the planning requirements. If mechanical backfill is selected, manual backfill should be performed first within 0.6m of the pipe top and around the viewing well. During backfilling, a road pan is required to be laid on the side of the building or on the top of the drainage pipe. The backfilling method should be used. The backfilling cannot use bad soil.

The municipal water supply and drainage pipeline project is not only closely related to the daily life of urban residents, but also a basic construction project in urban construction. Because of the importance of this project, once there is a problem with the construction quality, it will destroy the life order and living standards of urban residents and present severe consequences.

What are the problems and solutions presented during the construction of drainage pipes?

The drainage pipe will let you know the following analysis:

01 Problems during the construction of municipal water supply and drainage pipelines

1. Problems with pipeline components

In practice construction, because the construction unit ’s quality awareness is indifferent, in order to reduce the construction cost, the quality of the pipe is not strictly controlled, which causes the pipe to be incompatible with the operating specifications in terms of functional indicators. During the later operation, it is lack of resistance to pressure and seepage. So it is easy to show leakage.

2.The problem of trench excavation

In practice construction, some construction units did not perform strictly according to the plan drawings, which caused problems such as slope collapse, water soaking at the bottom of the groove, and excessive cross-section errors during trench excavation, which severely affected the normal progress of pipeline construction.

3. Problems during the installation of pipelines

At present, when some construction units practice the installation of water supply and drainage pipelines, because of the indifferent understanding of the operators ’installations and poor management, it is easy to show that the circular head of the pipeline is too high or too low when viewing the circular shape of the pipeline. The slope of the pipeline and the requirements of the planning drawings will not be presented. These problems will cause great difficulties in the later operation.

4. Problems with closed water experiments

Some pipeline projects start backfilling without conducting water-closing experiments. There is no specific understanding of the pipeline's tightness and other functions. In some closed-water experiments, the inaccuracy of the specification of the experiment has affected the function of the experiment, leading to many safety risks in the safe operation of the water supply and drainage project.

5. Problems with backfill projects

Regarding the quality of backfill soil, there is no strict control. The use of soil backfill at the construction site casually does not meet the specifications. In addition, the layered backfilling is not used in the backfilling method, which brings danger to the quality of pipeline construction.

02 Solutions to problems related to municipal water supply and drainage pipeline construction

1. Quality assurance of municipal water supply and drainage pipeline engineering components

To improve the quality and skill management of components in the construction of municipal drainage pipeline projects, it is necessary to select manufacturers with qualified skills and quality assurance as component suppliers, and to confirm the skills of municipal drainage pipeline systems before component acquisition. Do a good look and skills check. During construction, internal pressure experiments and external pressure experiments are performed on important components to achieve strict control and assurance of the quality of municipal water supply and drainage pipeline components.

2. Do trench excavation and support construction work

Before the excavation, the drawings should be carefully analyzed, and the work should be carried out in accordance with the drawings and process rules. The site's corners and other values should be carefully checked. Confirm the trench digging pattern according to the soil practice. In addition, it is necessary to avoid the basic groove being permanently exposed to the external environment.

3. Control the quality of the water supply and drainage pipelines

In the construction of municipal water supply and drainage pipelines, the inner and outer pull methods are usually used. The inner and outer pull methods inside the pipeline are used to slowly connect different two sections of water supply and drainage pipes.

4. Do the hydraulic pressure test of the pipeline to ensure the dredging of the water flow

Because the object inside the water supply and drainage pipeline is water, the water may show different water pressures for some reasons. Once the water pressure is too high and the pipeline cannot bear it, it is easy to present a problem. In addition, during the construction of the pipeline for the water supply and drainage pipeline, it is also necessary to check whether there is garbage in the pipeline. If there is any need to arrange it in time to avoid the phenomenon of pipeline blockage after the project is completed to ensure the flow of water. dredge.

5.Trench backfill

After the concealment operation is completed and accepted, the trench can be backfilled. The trench backfill should be performed symmetrically from both sides, and ensure that the backfill data meets the planning requirements. If mechanical backfill is selected, manual backfill should be performed first within 0.6m of the pipe top and around the viewing well. During backfilling, a road pan is required to be laid on the side of the building or on the top of the drainage pipe. The backfilling method should be used. The backfilling cannot use bad soil.

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