A visual test device and method for simulating tunnel water inrush

Abstract

The invention discloses a visual model testing device and method for simulating water gushing in a tunnel. The device comprises a model test box, a water tank, a high-pressure water pump, a flow meter, a runoff flow and filling collecting device, a digital photographing non-contact measuring system, an osmotic pressure monitoring system, a fiber grating displacement monitoring system and the like. The testing device is characterized in that the catastrophe evolution process of water gushing in the tunnel is simulated, and anti-gushing rock mass crack growth and water gushing channel formation during water gushing can be directly observed. The device can quantitatively research water gushing behavior of the tunnel under different water pressure, different lithological characters and different thicknesses of anti-gushing rock masses, acquire coupling information of multiple fields such as stress fields, displacement fields, seepage fields and the like during water gushing of the tunnel, determine formation processes and forms of water gushing channels under the effect of different factors, disclose mechanical characteristics and evolution laws in anti-gushing rock mass structure progressive failure processes and provide an effective basis for the tunnel water gushing disaster incoming criterion and the minimum safe thickness analysis method.

Description

Technical field [0001] The invention belongs to the field of tunnel engineering geological disaster model tests, and particularly relates to a visual test device and method for simulating water inrush in a tunnel. Background technique [0002] With the construction of major infrastructure projects for transportation, water conservancy and hydropower, my country has become the country with the largest tunnel construction scale and difficulty in the world. In particular, as the focus of major engineering construction shifts to the western mountainous and karst areas with extremely complex topography and geology, a large number of high-risk deep and long tunnel projects are being or about to be built, and major water inrush disasters are easily encountered during the construction process, which seriously affects the tunnel construction Safety. [0003] The tunnel is a long underground structure with complex engineering geological conditions along the line. During the construction pro...

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Problems solved by technology

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the present invention provides a visual test device for simulating tunnel water inrush, through the water inlet pipe, transparent model box and monitoring device, while simulating water seepage, it can detect the formation of water inrush channel , and understand relevant information, solve the problem of lack of experimental devices in the prior art

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