Tunnel step-by-step excavation simulation device

Abstract

The invention discloses a step-by-step excavation simulation device for a tunnel, which comprises a simulation tunnel with a hollow structure, and a rock mass simulation layer for simulating the strength of the original rock is arranged inside the simulation tunnel; The boundary between the simulated tunnel and the simulated rock mass layer is equipped with a magnet and cooperates with it to form a blasting simulation device; the contact surface is filled with organic glue, and the gap between the rock mass outside the organic glue is filled with expansive cement to be stressed. Set pressure sensors, strain gauges and multi-point displacement gauges, and at the same time have acoustic instruments to monitor the internal integrity, and monitor the force, deformation and strain of other positions in the simulated tunnel under the influence of disturbances generated during the entire simulated excavation process through the monitoring device , creep and displacement data can provide basis for determining the rationality of design parameters and determining whether the selected construction method can ensure the stability of the surrounding rock of the tunnel, etc., which has extensive engineering practical significance and application prospects.

Description

technical field [0001] The invention belongs to the field of tunnel stress simulation experiments, in particular to a step-by-step tunnel excavation simulation device. Background technique [0002] With the continuous increase of my country's population, the acceleration of urbanization and the continuous improvement of people's material living standards, many large cities have gradually experienced difficulties in housing and travel, so people's use of space has gradually shifted from above ground to underground. At the same time, in the process of the gradual development of my country's transportation network, it also "passes mountains and rivers", often building tunnels through mountains to facilitate road construction. Therefore, my country's underground engineering construction has entered a prosperous period at present. There are several or even dozens of projects under construction in underground engineering such as railway tunnels, high-speed railway tunnels, highway...

AI Technical Summary

Problems solved by technology

It solves the problem that the existing simulation device has no entity and cannot simulate the actual situation. At the same time, the modeling and analysis steps are relatively complicated and require a certain operating foundation. It has the characteristics of simple structure, low cost, convenient operation and wide applicability. , has extensive engineering practical significance and application prospects

Images