Analysis of quality control points of sewage pipe network construction?

Nowadays, the demand for water resources is increasing, and the treatment of sewage has gradually become the focus of attention. At the beginning, people didn't pay enough attention to sewage treatment, which led to the spread of many infectious diseases among people through sewage, which began to attract people's attention to sewage treatment. Although rivers and lakes in the natural environment have a certain ability to treat sewage, the scale of the city and the number of urban residents are too large for rivers and lakes in nature to treat these sewage well. This also requires us to separate the sewage in the city from the clean water source and transfer the sewage to the sewage treatment plant for treatment. However, after years of development, there are still some problems in the construction quality of sewage pipe network. For example, some existing sewage pipe networks are outdated and have serious quality problems, which need to be improved during the construction of sewage pipe networks.

First, the quality control points in the process of old sewage pipe network transformation.

(a) before the construction of the measurement is not allowed, easy to lead to a comprehensive accident.

Generally speaking, in the process of sewage pipeline construction, it is necessary to bury the sewage pipe network deeply. When we laid old sewage pipes before, there were not so many wires and communication cables underground. But now when we are rebuilding the old pipeline, there are already many wires and communication cables underground, so the first thing we should do before rebuilding the old pipeline network is to conduct a careful survey of the pipeline network area, and then cooperate with telecommunications, power supply, urban management, water affairs and other departments to ensure that we can find out all kinds of pipelines buried around the old pipeline and effectively avoid all kinds of accidents in the actual construction process.

(2) Do a good job in solving the problems of water seepage and settlement.

At present, the old underground pipe network has been used for a long time, which is affected by many factors such as geological conditions and pipeline seepage. Problems such as ground settlement will inevitably occur during construction. Therefore, before the renovation of the old sewage pipeline, the construction unit must do a good job in solving related problems to prevent the problems from affecting the construction period and the overall construction quality.

(3) dredge and do a good job in pipe network protection.

Some old pipe networks are affected by many factors such as local geological environment and cannot be completely replaced. However, in order to solve the contradiction between sewage treatment and the upper limit of the pipe network, it is necessary to clean the pipe network regularly, which can alleviate this pressure to some extent. In the process of cleaning the pipe network, it is necessary to protect the pipeline, especially the interface of the pipeline, which is easy to seep. In the process of pipe network cleaning, heavy machinery is not allowed to enter the pipe network for construction work, and at the same time, those powerful and corrosive additives cannot be used in the process of dredging to prevent damage to the pipe network.

(4) Protection against H2S poisoning in old pipelines

Old pipelines are usually used for a long time, and there is usually a lot of silt in old pipelines and wells, and then hydrogen sulfide gas, a highly toxic gas, may be produced in old pipelines because of poor running water. In the process of rebuilding the old sewage pipeline, we must pay attention to the protection of harmful gases to prevent the influence of harmful gases on the construction personnel and the surrounding environment.

Second, the key points of quality control in the process of laying new pipe network

Now that the new official website is laid, it seems that the construction unit only needs to carry out the construction, which will not be greatly affected, but in fact, there will still be many problems in the construction process.

(A) to coordinate the construction sequence

In the construction of a new area, once the construction scheme is determined, the municipal construction will start. Moreover, because the sewage pipe network is buried at the bottom, and sometimes the area where the sewage pipe network is buried needs to be excavated many times during the construction process, it is not conducive to the overall maintenance of the sewage pipe network. Therefore, in the process of municipal engineering construction, municipal departments should coordinate with relevant departments. Those who can enter the construction site at the same time should enter the construction site at the same time, and those who can't enter the construction site at the same time should also set strict operation surface restrictions on these construction projects to prevent the sewage pipe network from being damaged during construction, resulting in water leakage.

(b) Advance planning needs to be accurate.

Before the specific construction, the construction unit needs to make a good construction plan and survey the design drawings, because some areas are newly developed during the construction of sewage pipelines, which will lead to various errors in the design and planning process and will also have a certain impact on the design of pipelines. If these errors are ignored, forced construction will lead to the assumption that there is a certain error between the design size and the actual construction size of the pipeline, which will lead to pipeline deformation and water leakage. In addition, if trenchless pipe jacking technology is needed for pipeline construction in the construction process, it is also necessary to go to the construction site to see whether the location of the working well and the receiving well will have an impact on the surrounding residential areas and factories and enterprises, and whether the installation location of the inspection well will have an impact on the access of the surrounding sewage pipeline branches in the later period.

(3) Strictly control the quality of nozzle materials.

In the current sewage pipe network, the water leakage problems between pipes and interfaces and between pipes and inspection wells are completely caused by the building materials selected in the construction process not meeting the standards. If the nozzle material used does not meet the requirements, then in the process of pipeline laying, no matter how it meets the standards, it will also lead to ground subsidence due to long-term water seepage or water leakage, which will have a very serious impact on people's normal life and work in the whole area. Therefore, in the process of sewage pipe network construction, we need to strictly control the quality of materials used at interfaces or joints, such as rubber sealing rings, so as to better ensure the construction quality of sewage pipe network.

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The construction of sewage pipe network in municipal engineering has a very close relationship with people's lives, and it is a very important link in the construction of municipal engineering now, but there are still many problems in the construction of sewage pipe network now. This paper mainly introduces the key points of quality control in the construction of sewage pipe network.

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