Test device and test method capable of simultaneously simulating rainfall and top loading

Abstract

The invention discloses a test device and test method capable of simultaneously simulating rainfall and top loading. The device comprises a uniform distribution beam with holes, oil pressure jacks, a counterforce regulation plate and a rainfall simulation device, wherein the uniform distribution beam with the holes is put onto the upper part of a rock soil body to be loaded; a plurality of oil pressure jacks are uniformly distributed and arranged on the upper flange of the uniform distribution beam with the holes; the counterforce plate regulation plate is arranged above the oil pressure jacks through a hydraulic ascending and descending device; the rainfall simulation device is arranged under the counterforce regulation plate. The problem of deep-buried tunnel rainfall seepage under the control of the different rainfall conditions and deep burying conditions can be simulated. The test device has the advantages that the structure is simple; the test result reliability is high; the practical conditions of the deep-buried tunnel rainfall seepage can be better reduced.

Description

technical field [0001] The invention belongs to the field of tunnel engineering geological disaster model tests, in particular to a test device and method capable of simultaneously simulating the infiltration of surface water under the conditions of rainfall and top loading. Background technique [0002] In recent decades, my country's major infrastructure such as transportation has developed vigorously. By 2020, my country's highways and railways will exceed 120,000 kilometers, and railway tunnels will reach 10,000 kilometers. A large number of high-risk deep and long tunnels are about to be built. These tunnels have the remarkable characteristics of "large buried depth, long tunnel line, high stress, high water pressure and complex geological structure". Water inrush is a major geological disaster that is often encountered in the construction of deep and long tunnels. According to incomplete statistics, it accounts for about 40% of all kinds of disasters. big challenge. ...

AI Technical Summary

Problems solved by technology

At present, the research on the impact of rainfall infiltration on tunnel water inrush is limited to shallow tunnels. Due to the lack of outburst corresponding test equipment, it is difficult to carry out related research on surface water infiltration caused by deep tunnels under rainfall conditions. Model test research in a relatively lagging state

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