How to ensure the construction quality of municipal drainage pipeline engineering

Construction of municipal drainage pipeline engineering.

1. According to the actual situation of municipal pipeline engineering construction, the whole process of construction can be divided into three stages: preparation before pipeline laying, pipeline laying and construction site restoration. The key works of each stage are: 1. Preparation before the laying of the pipelineThe removal of the road and the restoration of the urban pipeline will have a certain amount of existing road surface broken during the construction of the pipeline.

In order to ensure the safety of construction and the quality of the roadbed, when the pipeline is excavated on the road, the width of the opening is calculated according to the design requirements of the construction drawings, and the excavation line is marked with white paint, the road surface is cut off with a cutting machine, and the crushed asphalt surface layer and the subgrade slag layer of the surface layer are excavated by the excavator, and the stable sand layer of the subgrade is reasonably stacked for reuse, so it is transported to the dump site by the dump truck. After the pipeline construction is completed, the quality of the trench backfill will directly affect the quality and use function of the road. The project pipe top 500mm backfill plain soil, the use of electric light compaction machine layered tamping, outside the use of frog tamping machine layered ramming, backfill each layer of virtual soil layer control within 250mm.

When the tamping of each layer is completed, the full-time experimenter uses a nuclear densitometer to measure its compactness to ensure that the compaction rate reaches more than 95%. According to the condition of the original road structure, the road will be restored.

2. When excavating the trench of the protective pipeline of above-ground and underground public facilities, the support should be used in time according to the geological and soil conditions to avoid landslides and collapses. The excavation slope and the supporting form should be submitted to the project supervision for review, and the construction can only be carried out after approval. When excavating near the foundation of buildings and structures, telephone poles and light poles, measures to prevent them from sinking or deformation, reinforcement engineering calculations and drawings shall be reported, and submitted to the project supervision for approval.

Some lots need to be drained so that excavators can always work in a dry environment. The drainage process shall not cause excessive subsidence of the ground, affecting the normal use and safety of buildings, structures and other public facilities around the site. Excavation near the foundations of buildings and structures, electric poles and light poles, reinforced with steel sheet piles.

When excavating under the high-voltage line, the excavator is required not to work directly under the wire, and if necessary, manual excavation is used. Trenches are excavated on the side of the road, safety and warning signs such as guardrails, barricades and hazard flags are set up on the side of the road, and red lights are hoisted at night. In the process of excavation, when there are cables, pipelines or other structures, contact the relevant units in time to deal with underground pipelines and various structures, and try to temporarily relocate; If it is not possible to relocate, it must be excavated to make it exposed, and reinforcement measures such as hanging and supporting must be taken.

Municipal drainage pipeline engineering, the construction quality in our country is really bad, in fact, to ensure the quality is very simple, can also be said only one sentence. According to the "Water Supply and Drainage Pipeline Engineering Construction and Acceptance Code" for construction acceptance. The main thing is that the supervisor must be responsible.

Secondly, the owner plays a supervisory role. But the reality is that it is basically impossible to achieve. There is no way, China's national conditions dictate, the owner wants to make a first-class project with the lowest **, as the construction party, and wants to ensure that the most basic is profit, and there is no profit to do it.

You get what you pay for, and in the same way, if you want to eat lobster for 10 yuan, how good do you think the lobster you eat will be?

Summary. Dear, hello, I have inquired for you what are the requirements for the quality of the drainage pipes 1. The quality of water supply and drainage pipes and pipe fittings must meet the standard requirements, and the drainage pipes should be made of rigid PVC drainage pipes and parts. 2. Before construction, it is necessary to check whether the original pipeline is unblocked, and then carry out construction, and then check whether the pipeline is unblocked after construction.

The concealed water supply pipeline should be inspected by the water, and the newly installed water supply pipeline must be pressurized in accordance with the relevant regulations, and there should be no leakage, and the inspection can only enter the next process of construction. 3. The drainage pipeline should be temporarily sealed before construction to avoid debris entering the pipeline. 4. For the installation of water supply pipes with an outer diameter of less than 25mm, pipe clamps should be set at 100mm of corners, water meters, faucets or angle valves and pipeline terminals, and the installation of pipe clamps must be firm.

The pipeline should be connected with threads and exposed threads at its connection, and it should be fixed with pipe clamps in time after installation, and there should be no loosening between the pipe and the pipe fittings or valves. 5. The position of the installed valves should meet the design requirements and be easy to use and maintain. 6. The connections of all joints, valves and pipelines should be tight, and there should be no leakage, and the slope of the pipeline should meet the requirements.

7. All kinds of pipelines shall not change the original nature of the pipelines.

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Dear, hello, I have inquired about the quality of the drainage pipes for you What are the requirements 1, the quality of water supply and drainage pipes and pipe fittings must meet the standard requirements, and the drainage pipes should be destroyed by using rigid PVC drainage pipes and parts. 2. Before construction, it is necessary to check whether the original pipeline is unblocked, and then carry out construction, and then check whether the pipeline is unblocked after construction. The concealed water supply pipeline should be inspected by the water, and the newly installed water supply pipeline must be pressurized in accordance with the relevant regulations, and there should be no leakage, and the inspection can only enter the next process of construction.

3. The drainage pipeline should be temporarily sealed before construction to avoid debris entering the pipeline. 4. For the installation of water supply pipes with an outer diameter of less than 25mm, pipe clamps should be set at 100mm of corners, water meters, faucets or angle valves and pipeline terminals, and the installation of pipe clamps must be firm. The fiber sock pipe is connected by threads, and there should be exposed threads at its connection, and it should be fixed with a pipe clamp in time after installation, and there should be no loosening between the pipe and the pipe fittings or valves.

5. The position of the installed valves should meet the design requirements and be easy to use and maintain. 6. The connections of all joints, valves and pipelines should be tight, and there should be no leakage, and the slope of the pipeline should meet the requirements. 7. All kinds of pipelines shall not change the original nature of the pipelines.

<> on how to prevent and control the common problems of construction quality of municipal drainage pipeline engineering? If you want to know the answer, the following is the relevant content of Zhongda Consulting on how to prevent and control the common problems of the construction quality of municipal drainage pipeline projects, and the basic situation is as follows:

Municipal drainage pipeline engineering is a kind of public infrastructure, its quality is closely related to people's lives, in the construction process to strengthen management, take reasonable construction technology and methods, and strive to overcome a variety of quality problems, to ensure that the overall construction quality of the project to achieve excellent.

First, the construction of municipal drainage pipeline engineering with the quality of the town spike common problems:

1. The position of the pipeline is offset, the displacement of the center line exceeds the standard, the pipeline is reversed, and the pipeline is wrong.

2. Pipeline seepage, water leakage, surface subsidence, water and soil pollution, and even pipeline breakage, affecting normal use.

3. The backfill is subsided, the surface is uneven, and the subsidence is prone to surface water, which affects the normal passage of pedestrians and vehicles.

Second, the construction quality of municipal drainage pipeline engineering common problems prevention and travel treatment:

In the preparation stage of drainage pipeline construction, we should pay attention to the design of drawings, the selection of pipes and the measurement of pay-off, each link should be careful and careful, and should be completed in accordance with the prescribed procedures, only the effective implementation of the preparatory stage of the work can make the later work can be carried out smoothly.

The construction of municipal drainage pipeline project is not complicated, and many technicians ignore the technical disclosure to workers, resulting in blind construction of workers and causing hidden dangers to the quality of the project.

The closed water test is an important part of testing the construction quality of water pipes; First of all, it should be clear whether to do the closed water test, sewage pipes, rain and sewage combined pipelines and other drainage pipes that are designed to be closed must be closed water cultivation test, and the backfill can only be carried out after the closed water test is qualified.