Laboratory model testing device for tunnel excavation

Abstract

The invention discloses a laboratory model testing device for tunnel excavation. The laboratory model testing device comprises a model box, a tunnel structure model, a loading device and an excavation device, wherein the model box is composed of a floor trough and an organic glass plate, the organic glass plate is fixed on the opening surface of the floor trough through a groove; model testing fillers are padded in the model box; the tunnel structure model is made of rosin materials in a casting manner according to the ratio of similitude of an actual tunnel section, and is arranged in the middle of the model box; the loading device mainly comprises a counter-force beam, a steel plate and a hydraulic jack, and is arranged on the top of the model box; the excavation device mainly comprises a heating wire, a lead and a power supply switch, wherein the heating wire is arranged in the tunnel structure model. Due to the adoption of the testing device, the shape and size simulation in the tunnel excavation process can be performed conveniently, an excavation boundary can be well matched with a geometric boundary designed in advanced, the simulated tunnel excavation can be relatively well matched with an actual engineering; the testing device is simple in structure, convenient to operate, low in cost, and convenient to develop and apply.

Description

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AI Technical Summary

Benefits of technology

In this new system for studying tunneling processes during construction or other operations, it uses special materials that have lowered melting points than usual but stronger properties like steel plates when poured into holes underground. These material are then used to create an artificial wall called a tunnel shell. By controllably increasing temperature at specific locations within these walls, we aim to mimic realistic conditions such as pressure applied from outside sources over time without affecting any important aspects about how they work together.

Problems solved by technology

The technical problem addressed in this patents relates to accurately simulating tunnel excruptions during testing procedures without compromising its effectiveness or reliability. Current models are either too simplistic (overload) or fail to fully represent the forces involved when excavations occur around them.

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