Synchronous construction method of open hard rock roadheader and secondary lining

Abstract

The simultaneous construction method of open hard rock roadheader excavation and secondary lining involves the construction method of open type hard rock roadheader construction excavation and secondary lining process synchronous follow-up and connection. While TBM excavation is carried out, the tunnel secondary lining is carried out synchronously. The implementation method is to start the secondary lining construction when the TBM excavation is about 1000m. The secondary lining is equipped with its own waterproof board laying platform and repair frame; Efforts should be made to solve the mutual interference and influence between the secondary lining construction and the TBM tunneling construction, especially the mutual interference and influence on the transportation and construction organization issues, so as to ensure the smooth and rapid secondary lining construction simultaneously with the TBM tunneling , Simultaneously, relieve the pressure of the project schedule, and the completion time is significantly ahead of schedule.

Description

Technical field: [0001] The invention relates to a construction method in which the excavation of an open-type hard rock roadheader is simultaneously followed up and connected with the secondary lining process, in particular to the simultaneous construction method of the open-type hard-rock roadheader and the secondary lining. Background technique: [0002] When the length of the tunnel and the hole is too long, it will take a long time to construct the tunnel with the conventional drilling and blasting method, and the tunnel boring machine method is more suitable for the construction of long tunnels. The English name of the tunnel boring machine is Tunnel Boring Machine, or TBM for short. TBM is highly targeted, and different geological conditions require different roadheaders, resulting in different roadheaders; some are suitable for soft soil, also known as shield machines; some are suitable for rocks. Rock boring machines can be divided into open type, single-shield typ...

AI Technical Summary

Problems solved by technology

[0008] For long-distance traffic tunnels, open-type hard rock roadheaders are mostly used. Due to the mutual interference and influence of the two lining constructions at the same time as the TBM tunneling construction, especially the mutual interference and influence on transportation and construction organization issues , the existing technology can only perform secondary lining on the tunnel surrounding rock after the tunnel excavation is completed and the TBM is removed, which often requires a long construction period

Therefore, there are various unfavorable factors such as tight construction period, difficult construction, harsh natural conditions, and long distances for transportation of various raw materials.