Tunnel backfill method utilizing vesicle mixing light soil

Abstract

The invention relates to a field of construction technology of project parts such as cavities, temporary construction channel and the like of traffic engineering of urban rail. The invention specifically includes a tunnel backfill method utilizing vesicle mixing light soil. The method includes steps of 1, blocking an outlet of one end in a to-be-backfilled tunnel; 2, erecting a cement tank at the outlet of the other end of the tunnel, arranging a vesicle mixing light soil integrated device and building a water tank; 3, layering the vesicle mixing light soil in a horizontal manner after equipment debugging until tunnel backfill is completed totally. By adopting the method provided by the invention, filling is compact and no cavities may be generate at the channel top generally. At the same time, no great influence on surrounding environment may be caused during the construction process. Due to the good durability, maintenance can be saved in the later stage, so that the method is convenient in construction, short in working period, low in manufacture cost and has distinctive practical performance and economical performance.

Description

technical field [0001] The invention relates to a tunnel backfilling method, in particular to a tunnel backfilling method using air bubbles to mix light soil. Background technique [0002] With the deepening of my country's reform and opening up, urban rail transit technology has developed rapidly, and there are still many problems in the treatment of temporary construction passages generated during the construction of rail transit. At present, there are two commonly used treatment methods, one is backfilling with slag and plain concrete for temporary construction passages, and the other is reinforcement of temporary construction passages with the second lining scheme. First of all, there are several problems with the backfilling method of hole slag and plain concrete. Because the backfill construction work surface in the construction channel is too narrow, it will definitely cause the part of the hole slag backfill to be compressed not dense enough. If the temporary constru...

AI Technical Summary

Problems solved by technology

First of all, there are several problems with the backfilling method of hole slag and plain concrete. Because the backfill construction work surface in the construction channel is too narrow, it will definitely cause the part of the hole slag backfill to be compressed not dense enough. If the temporary construction channel is too long, it will cause inconvenience in concrete transportation. Insufficient internal vibration will cause cavities on the roof of the cave. At the same time, the noise generated during the backfilling construction process is large, which has a great impact on the surrounding environment during construction, and relatively more artificial machinery is used.

If the second lining scheme is used for treatment, the project cost is very high, the construction period is very long, its durability is average, and maintenance is required in the later stage. When there is water in the hole, it needs to be drained.

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