Method for synchronic construction of tunnelling of open-type hard rock tunnel boring machine and secondary lining

Abstract

The invention provides a method for synchronic construction of the tunnelling of an open-type hard rock tunnel boring machine TBM and a secondary lining and relates a construction method for collaborative following up and joint of the construction tunnelling of the open-type hard rock tunnel boring machine TBM and the secondary lining working procedure at the same time. The tunnel second lining is synchronically carried out when the TBM tunnels. The implementing method comprises following steps that: when the TBM tunnels by about 1,000 m, the second lining construction is started; the second lining is provided with a respective waterproof plate laying bench and a mending frame; secondary lining concrete is poured into a marshalling cart ready for supplying mixed clay. The method mainly solves the problems of mutual interference and influence the tunneling construction of the TBM and the secondary lining construction which are carried out at the same time, and particularly the mutual interference and influence of transportation and construction organization. The method ensures smooth, quick and synchronic secondary lining construction which is synchronically carrying out when the TBM tunnels, relieves the pressure of the project construction period, and obviously advances the completion time.

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.