Device and method for driving pre-stressed anchor rod in tunnel with water-rich, soft and broken surrounding rock

Abstract

The invention provides a device and method for driving a pre-stressed anchor rod in a tunnel with water-rich, soft and broken surrounding rocks, and belongs to the field of tunnel engineering machinery. The device for driving the pre-stressed anchor rod in the tunnel with water-rich, soft and broken surrounding rocks includes a locking mechanism and a driving mechanism; the locking mechanism includes a mounting seat, a screw rod, a nut, a locking rod and a through hole; the nut is connected on the screw rod in a threaded transmission manner; the nut is fixed at one end of the locking rod; thelocking rod slides in the through hole; the through hole is formed in the outer wall of the mounting seat; the driving mechanism includes a first bevel gear, a second bevel gear and a rotating shaft,the first bevel gear is fixed at one end of the screw rod, the second bevel gear is in transmission connection with the first bevel gear, the second bevel gear is fixed on the rotating shaft, and therotating shaft passes through the mounting seat, so that the locking of the anchor rod in the radial position is realized; and therefore, the bearing capacity of the anchor rod in the tunnel to transverse shear and bending forces can be greatly improved, the service life of the anchor rod is prolonged, and the firmness of the tunnel is strengthened.

Description

technical field [0001] The invention relates to the field of tunnel engineering machinery, in particular to a device and method for setting a prestressed bolt in a tunnel with rich water, weak and broken surrounding rock. Background technique [0002] A tunnel is a building built underground or underwater or in a mountain, laying a railway or building a road 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 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 railways passing through large cities, it is called a tunnel. Those that pass underground are called urban tunnels. Among these three types of tunnels, mountain tunnels are the most constructed. ...

AI Technical Summary

Problems solved by technology

[0004] In order to make up for the above deficiencies, the present invention provides a device and method for laying prestressed bolts in tunnels with rich water, weak and broken surrounding rocks, aiming to improve the problem that the anchors in tunnels with rich water, weak and broken surrounding rocks are prone to failure and fracture.

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