Construction method for TBM synchronization lining

Abstract

The invention provides a construction method for performing TBM synchronization lining by using a TBM synchronization lining formwork jumbo and a rack. One cycle of the method comprises the following steps of: sidewall foundation concrete construction; paving of rails for the jumbo and the rack; forward movement of a front working rack; construction of a water-proof system; positioning of the simultaneous lining formwork jumbo; and forward movement of a rear working rack. The construction method for the TBM synchronization lining of the invention not only guarantees that the synchronization lining is not disturbed by mucking of a belt conveyor but also reduces the influence of muck transportation on the advance rate and the transportation of other materials.

Description

technical field The invention relates to a TBM synchronous lining construction method. Background technique The total length of the West Qinling Extra-Long Tunnel is 28,236m, and its length is currently in the forefront in China. The total length of its TBM excavation is 15,520m, which is the longest TBM construction tunnel in the domestic railway industry. The geological conditions of the tunnel are quite complicated, and it needs to pass through the high-stress phyllite strata and water-rich areas. The φ10.2m TBM and the drill-and-blast method are used for joint construction, and the project scale is large. TBM construction in foreign countries started earlier, and since the 1990s in my country, the hydropower department began to introduce foreign advanced TBMs for hydraulic tunnel construction. There are few research materials, especially the synchronous lining technology during excavation. Generally, the lining is performed after the excavation is completed. In China, ...

AI Technical Summary

Problems solved by technology

(1) The tunneling is completed first and then the lining is carried out, and the construction period requires a long time

(2) The synchronous lining under locomotive mucking is used. Because one transportation track is required for lining, the transportation in the trolley section becomes a single line. In addition, locomotives are used for mucking, and there are many transport locomotives, which cannot meet the needs of rapid excavation. shipping requirements

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