Full-automatic tunnel concrete lining maintenance device and use method thereof

Abstract

The invention provides a full-automatic tunnel concrete lining maintenance device comprising a maintenance rack, a controller, a water spraying device and a power distribution box. The water spraying device is composed of a pressurizing pump, two rows of arc water spraying pipes and atomizing nozzles. The lower portion of the maintenance rack is provided with a walking device and the controller. The upper portion of the maintenance rack is provided with the two rows of parallel arc water spraying pipes. The full-automatic tunnel concrete lining maintenance device is easy to operate, achieves automatic maintenance, can automatically walk and spray water and effectively reduces cracks on the surface of lining concrete, the walking speed of the full-autonomous tunnel concrete lining maintenance device can be automatically controlled through a remote controller, the strength and the durability of a concrete lining are guaranteed, and indirect economic benefits are generated; the full-automatic tunnel concrete lining maintenance device is suitable for maintenance of all kinds of tunnel lining concrete, improves construction efficiency, lowers the maintenance process cost, improves the appearance quality of concrete, purifies air in a tunnel, and shortens ventilation time. Remarkable economic benefits are created for construction. The full-automatic tunnel concrete lining maintenance device further has the advantages of being simple and compact in structure, low in manufacturing cost and easy and convenient to use.

Description

technical field [0001] The invention belongs to the field of tunnel maintenance equipment, in particular to fully autonomous maintenance equipment for tunnel concrete lining and its application method. Background technique [0002] With the rapid development of road construction in my country, the proportion of plateau and mountain tunnel projects has gradually increased, and at the same time, higher requirements have been put forward for the strength, impermeability and durability of tunnel lining concrete. The main support forms of the tunnel are primary support and secondary lining support. Shotcrete must be used in the primary support, and the secondary lining support is mainly poured concrete. [0003] As the humidity of the concrete changes, its volume also expands or contracts linearly. For newly poured concrete, the volume deformation caused by humidity changes is plastic shrinkage; for hardened concrete, the volume deformation caused by humidity changes is drying s...

AI Technical Summary

Problems solved by technology

Since shrinkage is not uniform within the concrete block, this difference in volume change can create tensile stresses that promote cracks in the concrete block, thereby destroying the integrity of the surface layer and reducing its durability

[0004] In the construction of tunnel engineering, because the temperature in the tunnel is relatively constant and the air in the tunnel has a certain humidity, in the control of the concrete curing process, there is generally a phenomenon that insufficient attention is paid and the control is not strict, resulting in the maintenance of the primary support concrete and the second lining concrete. Not in place, strength and durability suffer

Moreover, due to the large cross-section and long distance of the long tunnel, artificial watering maintenance cannot ensure uniform watering, and the problem of concrete maintenance has become a common problem in tunnel construction.

[0005] At present, although there is water spraying maintenance equipment, it also requires workers to operate on site, and the level of automation is low

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