In the construction of urban drainage system, as an important part of the drainage pipeline, the construction quality of the inspection well directly affects the construction quality of the entire drainage pipeline. Therefore, in the construction process of inspection wells, it is necessary to strictly abide by the construction specifications and precautions to ensure the quality of construction.
1. Preparation before construction.
Before starting the construction of the manhole, sufficient preparation work is required. First of all, it is necessary to be familiar with the construction drawings and related specifications, and understand the design intent and requirements. Secondly, it is necessary to investigate the actual situation of the construction site, including topography, landform, traffic, etc., in order to formulate a reasonable construction plan. At the same time, it is also necessary to inspect the construction materials to ensure that the quality of the materials meets the requirements.
Second, the foundation construction.
Foundation construction is one of the key links in the construction of inspection wells. In the construction process, it is necessary to ensure the stability and strength of the foundation and prevent uneven settlement and leakage. When backfilling the foundation, it is necessary to use the method of layered backfilling, and the thickness of each layer of backfill should not be too large, and the compactor should be used for compaction. In the process of foundation construction, it is also necessary to pay attention to the implementation of drainage measures to prevent the foundation from being soaked in water.
Third, the construction of the well body.
Well construction is one of the key links in the construction of inspection wells. In the construction process, it is necessary to ensure that the verticality and roundness of the well body meet the requirements, and at the same time to ensure the structural strength and stability of the well body. When building the masonry well, it is necessary to select qualified bricks and cement mortar, and strictly control the quality of masonry. At the same time, in the process of masonry, it is necessary to pay attention to the cleanliness and hygiene of the well body to prevent debris from falling into the well.
Fourth, the installation of manhole covers and accessories.
The installation of manhole cover and accessories is one of the necessary links in the construction of inspection wells. Before installation, check whether the quality of the manhole cover and accessories meets the requirements, and install them in accordance with the design requirements. During the installation process, it is necessary to ensure the flatness and stability of the manhole cover, and at the same time pay attention to the coordination between the manhole cover and the surrounding ground. After the installation is completed, it is also necessary to carry out the opening and closing test to check whether the opening and closing of the manhole cover is smooth.
Fifth, backfill construction.
Backfill construction is one of the necessary links in the construction of inspection wells. In the process of backfill construction, it is necessary to select backfill materials of qualified quality, and carry out layered backfill and compaction according to the design requirements. At the same time, attention should be paid to protecting the integrity of the well bore and preventing damage to the well bore and manhole cover during the backfilling process. After the backfill is completed, it is also necessary to carry out tamping and rolling to ensure the compactness and stability of the backfill.
6. Quality inspection and acceptance.
Quality inspection and acceptance is one of the important links in the construction of inspection wells. During and after construction, comprehensive quality inspection and acceptance work is required. The quality inspection mainly includes appearance inspection, size inspection, strength testing, etc., and the acceptance work mainly includes data review and on-site acceptance. Only after passing the quality inspection and acceptance can it be officially put into use.
To sum up, there are many matters that need to be paid attention to in the construction process of inspection wells, and it is necessary to operate in strict accordance with the construction specifications and precautions. At the same time, it is also necessary to strengthen quality inspection and acceptance work to ensure that the construction quality meets the requirements. Only in this way can the construction quality and service life of the entire drainage pipeline be guaranteed.