A Surrounding Rock Failure Simulator for Shallow Tunnels

Abstract

The invention discloses a surrounding rock failure simulation device for a shallow buried tunnel, which includes surrounding rock, a tunnel, and a soil layer, and is characterized in that it also includes a data line, a monitor, a left arch foot support rod, a left arch waist support rod, an arch The top support rod, the first extrusion block, the first hydraulic cylinder, etc.; the surrounding rock is squeezed by the first hydraulic cylinder and the second hydraulic cylinder, the top breaking device vibrates and destroys the surrounding rock, and the shaking device shakes, Loosen the internal structure of the surrounding rock. When the left arch foot support rod, left arch waist support rod, vault support rod, right arch waist support rod and right arch foot support rod break, it means that the tunnel has reached the limit of force, and the inside of the tunnel passes The monitor monitors and records the value, which is transmitted to the data box through the data cable.

Description

technical field [0001] The invention relates to the technical field of tunnel failure simulation, in particular to a surrounding rock failure simulation device for a shallow buried tunnel. Background technique [0002] With the rapid progress of my country's transportation infrastructure construction, more and more road tunnels have been pruned, and arch tunnels have become more and more popular because of their smooth line shape, small footprint, and convenient bridge-tunnel connection. However, due to the large span of the multi-arch tunnel, the cumbersome construction procedures, the complex relationship between the stress change of the surrounding rock and the support relationship, there are still some problems in the design and construction. The load on the supporting structure, that is, the surrounding rock pressure. If the tunnel engineering support scheme is too conservative under certain conditions, it will cause waste; under certain conditions, due to insufficient...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a shallow buried tunnel surrounding rock failure simulation device to solve the problem of weakening the support through artificially simulating the collapse conditions by performing the simulation test of the overlying surrounding rock failure of the extremely shallow buried multi-arch tunnel proposed in the background technology. 1. Apply disturbance damage to realize the whole simulation of the collapse process. The existing simulation device has a simple structure and a single function, which cannot detect the tunnel’s bearing limit and cannot conduct simulated damage experiments on the tunnel.

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