Model box device for multifunctional tunnel excavation model test

Abstract

The invention discloses a model box device for a multifunctional tunnel excavation model test, and belongs to the technical field of tunnel construction tests. The panels of the front and rear walls of the model box are provided with replaceable small panels having holes. Observation windows are located on the panels of the left and right walls of the model box. A saturation system is arranged atthe bottom of the model box and consists of a vertical water supply pipe at the corner of the box, a bottom lateral water conduit and vertical water conduits. A cleaning window is installed on the observation window on one side of the model box device, and can quickly clean out soil in the model box after a test. The universal wheels and the positioning piles of the model box device can easily andquickly move the model box device to a designated test area before the test, and then the positioning piles are pulled down to fix the model box. After the test, the positioning piles are pulled up to move the model box to an appropriate position. The model box device is equipped with pressure measuring tubes on both sides of the wall to accurately measure a water level in the soil inside the model box device.

Description

technical field [0001] The invention relates to a test model box device, in particular to a model box for a multifunctional tunnel excavation model test, and belongs to the technical field of tunnel construction tests. Background technique [0002] During the tunnel construction process, due to the stress release of the rock and soil mass, the stress of the surrounding rock of the tunnel changes, which in turn leads to formation deformation and surface settlement. Studying the displacement and stress changes of rock and soil mass during tunnel excavation is a key issue in tunnel research. Based on the characteristics of the stability of the tunnel face, the methods currently used mainly include: numerical simulation method and model test method. Due to the complex stress-strain relationship of the rock and soil mass itself and the changeable stratum conditions in engineering, the model test is equivalent to the actual engineering stratum conditions through the similarity ra...

AI Technical Summary

Problems solved by technology

[0004] However, at present, most of the model boxes for tunnel excavation are fixed test benches, which cannot be moved; most of them are boxes with no openings on the side, and cannot be unearthed after rapid testing.

In addition, most of the model boxes do not have a saturation system inside, so the saturation of the soil layer cannot be achieved. Even if there is a saturation device, the water level cannot be observed intuitively.

Images