Physical model test device and method for ground fissure earth tunnel

A technology of model device and physical model, applied in the field of tunnel engineering, can solve the problems of large internal measurement error, unreasonable simulation of tunnel surrounding rock stress field, single simulated working condition, etc., and achieves the effects of stable pressure, simple structure and convenient operation.

Inactive Publication Date: 2010-12-01
XIAN UNIV OF TECH
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Problems solved by technology

[0005] The object of the present invention is to provide a physical model test device for ground fissure soil tunnels, which solves the problems of single simulation wo

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  • Physical model test device and method for ground fissure earth tunnel
  • Physical model test device and method for ground fissure earth tunnel
  • Physical model test device and method for ground fissure earth tunnel

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Embodiment Construction

[0026] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0027] refer to figure 1 , the ground fissure soil tunnel physical model test device of the present invention, its structure is, comprises three parts of model device, settlement device and control device, and model device is supported by support 28, and the below of model device is provided with settlement device 23, model device and Various sensors and electrical components are arranged in the settling device 23, all of which are connected with the control device.

[0028] The model box 4 in the model device is made according to the scale reduction according to the actual project. The model box 4 is a hollow, vertical, cylindrical, closed container, which is composed of a loam cake 14, a cylindrical side wall, and a bottom plate. The bottom plate part is divided into a fixed bottom plate 27 and a movable opening along the diameter, and the...

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Abstract

The invention discloses a physical model test device for ground fissure earth tunnels comprising a model box in a model device. A footwall soil mass and a hanging wall soil mass are symmetrically arranged by a vertical shaft in the model box, a simulation ground fissure is arranged between the footwall soil mass and the hanging wall soil mass, a fixed bottom plate is installed below the footwall soil mass, and a hanging wall soil mass supporting plate in a sedimentation device is installed below the hanging wall soil mass; an air pressure sac is arranged among an upper cover, the footwall soil mass and the hanging wall soil mass; a tunnel portal is horizontally arranged on the cylindrical side wall of the model box, the axial line of the tunnel portal is perpendicular to the vertical shaft of the model box, the tunnel portal is internally provided with a model tunnel lining structure, and various sensors are arranged. The invention also discloses a physical model test method for the ground fissure earth tunnels. Tests of various schemes, such as ground fissure trend variation, variations of wall rock soil mass stratum structures and mechanical properties, variations of lining structural forms, sections and rigidities, and the like are realized by utilizing the device. The device and the method of the invention are simple and have good accuracy.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and relates to a ground fissure soil tunnel physical model test device, and also relates to a ground fissure soil tunnel physical model test method. Background technique [0002] In the construction of cavern structures such as tunnels, complex geological conditions are often encountered, such as ground fissures, goafs, karst caves, and depressions, etc., especially those formed and developed based on the development of fault structures and the excessive exploitation of groundwater. Ground fissures seriously affect the stability of the tunnel lining structure. Specifically, after the upper and lower wall strata on both sides of the ground fissure are dislocated, the subsidence displacement of the tunnel lining structure in the stratum and the soil on both sides of the ground fissure is different, which may cause The lining structure is separated from the surrounding rock; at the same t...

Claims

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Application Information

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IPC IPC(8): G01M19/00G01V1/00G01M99/00
Inventor 邵生俊佘芳涛熊田芳王天明高志宏
Owner XIAN UNIV OF TECH
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