T/CI 049-2022 Active

Scope: This document specifies the models, markings, structures, materials, technical requirements, test methods, inspection rules, markings, packaging, transportation, and storage of assembled high-strength composite resin inspection wells. This document applies to the fabrication and construction of inspection wells made from high-strength composite resin materials and fillers. Specific construction methods are described in Appendix A. Main technical content: The following terms and definitions apply to this document. 3.1 Inspection well: A well used for communication, municipal, water conservancy, power, gas, heat, and underground pipe network projects, which facilitates the inspection of various valves, instruments, equipment, and pipe fittings in sealing wells. 3.2 High-strength composite resin: A high-strength composite resin material made from unsaturated polyester resin as the matrix, with fillers such as basalt fiber, carbon fiber, and glass fiber added. 3.3 Assembled high-strength composite resin inspection well (inspection well): A well-like structure made from high-strength composite resin for inspecting the installation of various valves, water meters, and instruments in pipe networks. It typically adopts a modular structure, consisting of a well body (well chamber), a sealing cover, and inspection well accessories (see Figure 1). 3.4 Well chamber: The main part of the inspection well, which consists of an upper well chamber and a lower well chamber connected by glued sealing grooves and fixed joints. 3.5 Perforation: Used to connect the well chamber to the transition connecting pipe. 3.6 Transition connecting pipe fitting: A transition connecting piece connected to one end of the well chamber and the other end of the inspection pipe. 5. Materials: The components of the well body (upper body, lower body, and deepened well casing) shall comply with the following requirements: a) A composite material made from unsaturated polyester resin as the matrix,