T/CCTAS 145-2024 Tunnel anchor spray single layer lining construction specification

Scope

Main technical content: This specification aims to improve the construction quality and safety of tunnel projects, refine the current construction techniques of single-layer lining with anchor and spray concrete, and solve problems such as inconsistent construction standards and non-standard construction processes. Through summarizing engineering practice and experimental research, the feasibility of the specification has been verified, and it is suitable for railway and urban rail transit tunnel projects with Grade IV and above surrounding rock. The main technical methods include optimization of the anchor and spray support process, quality control of spray concrete and waterproof layer construction, and related experimental tests, such as bond strength testing of the spray layer and bearing capacity testing of the lining. The implementation of the specification is of great significance for improving the level of tunnel construction technology and ensuring the quality and durability of the project.

Development Information

Related Standards