Surrounding rock forming machine for rectangular tunnel

Abstract

The invention relates to a surrounding rock forming machine for a rectangular tunnel, comprising a base. A first framework and a bracket are arranged on the base; the upper part of the first framework is provided with a second framework, one end of the second framework is articulated with the bracket, a driving device for driving the second framework to rotate around the articulated position is arranged between the other end of the second framework and the bracket, the first framework and the second framework are provided with a car and a power transmission device for driving the car to move, and a cutting device is arranged on the car; and during construction, a plurality of holes are processed by a tunnel surrounding rock cutting mechanism, then a surrounding rock at the lower part of a tunnel is processed by the first framework and the cutting device, and a circular arc at the upper part of the tunnel is processed by the second framework, the cutting device and the driving device. The processing method has the advantages of no drilling and blasting, safety, reliability, good ventilation quality, reliable engineering quality, standardized construction, movable protection and the like, and capable of guaranteeing the safety of construction workers.

Description

technical field [0001] The invention relates to a machine for tunnels, in particular to a rectangular tunnel surrounding rock forming machine. Background technique [0002] A tunnel is a building built underground or underwater and paved with roads or railways for the passage of motor vehicles. According to its location, it can be divided into three categories: mountain tunnels, underwater tunnels and urban tunnels. In order to shorten the travel distance and avoid large ramps, it is called a mountain tunnel that passes under mountains or hills; in order to cross rivers or straits, it is called an underwater tunnel that passes under a river or under the sea; in order to meet the needs of roads or railways passing through large cities And what passes through the underground of the city is called an urban tunnel. The most built of these three types of tunnels are mountain road tunnels, railway tunnels or subway tunnels. [0003] Tunnel excavation methods are divided into op...

AI Technical Summary

Problems solved by technology

When working, use the above method to open a certain space first, and then use machinery and manual corrections, but the parts that are too large cannot be recovered, and the parts that are too small must be slowly knocked out by machinery or through the second drilling and blasting. Completed, this construction method is difficult to make a very regular rectangular tunnel, which will cause great damage to the surrounding rock, easy to collapse, unsafe, and cause certain difficulties to the steel skeleton and support in the next step, and it is difficult to control the thickness of the tunnel shotcrete

The rectangular shield machine construction method has the disadvantages of slow construction speed, many mechanical failures, difficult control, and long construction period.

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