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Analysis of the National Standards System Related to Wet-Spray Trolleys
Release time:
2026-07-31
Source:
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Summary:
As a critical piece of equipment for concrete support operations in tunnels, mines, and underground engineering projects, the standardized design and operation of wet‑spraying rigs serve as the cornerstone for ensuring construction quality, equipment safety, and the orderly development of industry standards. China has now established a multi‑level standardization system that encompasses product manufacturing, construction processes, and specific application areas, providing a clear technical foundation for the design, production, inspection, and field deployment of wet‑spraying rigs.
I. Core Product Standards: Standardizing Equipment Manufacturing and Performance
Such standards primarily specify the type, parameters, technical requirements, and test methods for wet-spraying rigs themselves.
1. Mechanical Industry Standard “Concrete Wet-Spraying Carriage for Rock Tunnels” (JB/T15010-2025)
This is currently an important industry product standard for wet‑spraying rigs. Issued by the Ministry of Industry and Information Technology, it applies to the manufacture of concrete wet‑spraying rigs used in rock tunnels in metal mines, non‑metallic mines, coal mines, railways, highways, and underground engineering projects. The standard sets forth clear requirements regarding product types, basic parameters, technical performance, test methods, and inspection rules, serving as the core basis for equipment manufacturers in design, production, and factory acceptance testing.
2. Group Standard “Concrete Spraying Carriage for Construction Machinery and Equipment” (T/CCMA0088-2020)
This standard was issued by the China Construction Machinery Industry Association and focuses on concrete‑pump‑type wet‑spraying trolleys that are either built on self‑propelled wheeled specialized chassis or modified from standardized Class II automotive chassis. Building upon existing mechanical industry standards, it introduces supplementary provisions addressing the specific characteristics of such mobile equipment, including chassis compatibility and driving safety.
3. Railway Industry Standard “Tunnel Concrete Wet-Spraying Machine for Large-Scale Railway Construction Machinery” (TB/T3525-2018)
This standard was issued by the National Railway Administration and is specifically intended for concrete wet‑spraying machines used in railway tunnel construction. Railway tunnels impose extremely stringent requirements on support quality and construction safety; accordingly, this standard sets more rigorous specifications with respect to equipment reliability, environmental adaptability, and construction efficiency.
II. Construction Technical Standards: Guiding On-Site Operations and Applications
Such standards focus on the materials, mix proportions, construction procedures, and quality control of wet-mix shotcrete.
1. Local Standard “Technical Specification for Wet-Sprayed Concrete Construction in Highway Tunnels” (DB50/T1391-2023)
Issued by the Chongqing Municipal Administration for Market Regulation, this document provides a detailed technical guideline for wet-mix shotcrete construction in highway tunnels. Its content typically covers the entire process, including raw material control, mix design, construction preparation, spraying operations, curing, and quality inspection, thereby ensuring the strength and durability of the support structure.
III. Guidelines for the Application of the Standard System
In the face of multi-tiered standards, all parties involved in a project must apply them precisely, tailored to the project type and their respective roles:
Equipment manufacturer and purchaser: shall be JB/T15010-2025 As the benchmark for equipment design and procurement acceptance. If the project is located in a specific industry, such as railways, it must also comply with TB/T3525-2018 Additional requirements.
Construction and Supervision Parties: On the basis of ensuring that equipment complies with product standards, the construction process shall strictly adhere to the relevant process specifications; for example, in highway tunnel projects, reference may be made to… DB50/T1391-2023 and local or industry-specific construction technical specifications. This ensures that from… " Equipment Performance " to " Quality of the project entity " Effective conversion.
The synergistic relationship between standards: product standards and construction standards complement each other. Product standards ensure… " Weapon " the excellence, while the construction standards stipulate " Tactics " Their proper application, taken together, constitute a complete technical chain for the high‑quality use of wet‑spraying rigs.
Summary
The national standards system for wet-spraying tunneling rigs is continuously being refined as technology advances and engineering practice accumulates. A thorough understanding of, and strict adherence to, these standards are of paramount importance for enhancing the support quality of tunnels and underground structures in China, ensuring construction safety, and driving the upgrading of equipment and technology. In practical applications, all stakeholders must stay abreast of the latest versions of these standards and, based on the specific requirements of each project, develop… " Equipment manufacturing has established standards to follow, and construction operations are conducted in accordance with prescribed procedures. " The standardized workflow.
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