Visualization system for simulating fluid-structure interaction tunnel excavation

Abstract

The invention belongs to the technical field of tunnel engineering, and aims to realize the visual monitoring of the tunnel excavation process and the dynamic migration process of seepage fluid, and in particular relates to a visualization system for simulating fluid-solid coupling tunnel excavation, including a fluid-solid coupling tunnel model system, a tunnel Model liquid supply system, detection system and excavation system; tunnel model liquid supply system is used to inject nuclide solution to simulate fluid pressure; detection system is used to detect the three-dimensional force deformation state of tunnel surrounding rock and the three-dimensional migration of nuclide solution process; the excavation system is set between the detection system and the tunnel model system to simulate tunnel excavation; during tunnel excavation, the drilling device is controlled by the lifting device set in the excavation system to rise to the set height for operation; When performing three-dimensional detection, the lifting device controls the drilling device to descend to the initial height without affecting the detection of the detection device. The invention realizes the visual simulation detection of fluid-solid coupled tunnel excavation and seepage migration process.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a visualization system for simulating fluid-solid coupling tunnel excavation. Background technique [0002] In recent years, with the large-scale development of my country's highways, railways, and subways, the proportion of tunnels in the line has become higher and higher, and the geological environment in which tunnel construction is located has become more and more complex. Karst formation, the tunnel is called karst tunnel, because the karst tunnel is located in the karst formation, major geological disasters such as water gushing and water inrush often occur during tunnel excavation. and other characteristics, it is easy to cause personal casualties and major economic losses, and has a major impact on the excavation and later operation of the tunnel. Therefore, the study of tunnel excavation and seepage water inrush under fluid-solid coupling conditions...

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Problems solved by technology

[0004] In order to solve the above problems in the prior art, that is, in order to solve the problem that the visual detection of fluid-solid coupling tunnel excavation and seepage migration process cannot be realized in the simulation test, the present invention provides a visualization system for simulating fluid-solid coupling tunnel excavation. Solid coupling tunnel model system, tunnel model liquid supply system, detection system and excavation system; the tunnel model liquid supply system is arranged above the fluid solid coupling tunnel model system, and is used to inject nuclide solution to simulate the tunnel model Subjected fluid pressure; the detection system includes a CT ray system, a CT detection system, a first PET detector and a second PET detector, and the CT ray system and the CT detection system are respectively arranged in the fluid-solid coupling tunnel Both sides of the model system are used to detect the three-dimensional force deformation state of the surrounding rock of the tunnel; the first PET detector and the second PET detector are respectively arranged on the other two sides of the fluid-solid coupling tunnel model system, It is used to detect the three-dimensional migration state of the nuclide solution in the tunnel model; the excavation system is arranged between the CT ray system and the fluid-solid coupling tunnel model system, and is used to simulate the excavation of the tunnel model; the excavation system The digging system includes a drilling device, a moving device, a carrying device and a lifting device; the moving device is connected with the drilling device through a guide rail slider, and is used to drive the drilling device to approach or move away from the fluid-solid coupling tunnel model system; the lifting device and the carrying device can be arranged to move relative to each other, and are used to drive the lifting or lowering of the carrying device, the moving device and the drilling device

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