Installation Errors of Yayuan Plastic Inspection Wells
Plastic inspection wells feature excellent antifouling performance, with dirt rarely adhering to their inner walls during water supply and drainage operations. However, when pipes of all sections are connected directly into the inspection well, routine dirt cleaning and maintenance inspections become extremely inconvenient. To solve this problem, a professional inspection mirror for plastic inspection wells can be adopted. This equipment can be extended underground to quickly detect internal dirt accumulation and determine whether maintenance is required, with a simple manufacturing process and convenient operation.
In terms of daily cleaning and maintenance, traditional manual pipeline cleaning methods have low efficiency and fail to meet modern humanized operation standards. The internal dirt of plastic inspection wells is mainly fluid sewage and sludge, so mechanical equipment can be used for auxiliary flushing and cleaning to improve operation efficiency. Manufacturers remind that safety must be the top priority during all maintenance and repair work. Warning signs shall be placed outside the pipeline construction area in advance. Personnel entering the pipeline must complete comprehensive protective measures, and gas quality testing must be carried out to meet safety standards before any maintenance operation.
Plastic inspection wells have been widely applied in urban and rural road drainage systems. As essential underground drainage facilities, they are composed of well bases, well barrels, well covers and other components. They are mainly installed at intersections and turning points of drainage pipelines, facilitating regular inspection, cleaning and dredging of underground pipelines. Plastic inspection wells are divided into sewage inspection wells and rainwater inspection wells. The unobstructed urban road drainage and no waterlogging largely depend on the orderly diversion of underground drainage pipelines. Road waterlogging is mostly caused by pipeline blockage, which makes the daily detection and management of inspection wells particularly critical.
With outstanding advantages such as strong corrosion resistance and long service life, plastic inspection wells effectively optimize urban and rural living environments while reducing overall engineering costs and manual maintenance expenses. Standardized installation can avoid most operational faults. Key installation technical points include the axial bearing capacity of connected pipelines, customized design of protective covers, adaptation to seasonal frozen soil environments, and control of pipeline friction coefficients.
In terms of standardized construction specifications for settlement wells: the cleaning depth of all settlement wells must be no less than 500mm. For pipeline diameter reduction design, an elbow shall be installed at the front end of the variable diameter section. There are clear specifications for pipeline access of outdoor inspection wells: First, for pipelines with an inlet and outlet diameter not exceeding 160mm, the elevation difference between the designed pipeline slope and the well bottom shall be strictly controlled (standard height difference: 500mm). Second, in terms of pipeline spacing, two parallel pipelines can be connected to the well under conventional conditions; for compact construction spaces, a confluence pipe can be adopted for centralized access. The number of connected single-well pipelines shall not exceed 3. When the pipeline elevation difference is large, pipelines can be directly connected to the well mouth.
For designers engaged in residential building drainage design, the application of plastic inspection wells shall comply with national drainage specifications. It is necessary to fully combine the structural characteristics of plastic inspection wells with on-site engineering docking requirements. The setting position and spacing of inspection wells shall strictly follow unified drainage design standards. In addition, the strength parameters of plastic inspection wells are mandatory contents that must be clearly specified in the design instructions.
Special attention shall be paid to the setting of settlement wells for sewage pipelines, which is clearly stipulated in drainage specifications and often neglected in traditional construction. A settlement inspection well shall be installed at the upstream inspection well of the building’s downstream drainage pipeline and the connection point of household access pipelines to the main downstream pipeline. This design can effectively prevent blockage of downstream pipelines and greatly reduce the frequency of later maintenance. The connection of well wall pipes and reducing wells adopts sealing ring connection technology to ensure the tightness and stability of pipeline connection.