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Novel transparent soil model test device for simulating tunnel excavation and test method thereof

A model test device and tunnel excavation technology, applied in the field of civil engineering construction, can solve the problems that the drainage method cannot guarantee the shape of the tunnel section and affect the accuracy, and achieve the effects of avoiding friction, improving accuracy, and avoiding disturbance

Active Publication Date: 2018-09-04
CHONGQING UNIV
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Problems solved by technology

However, the drainage method used in this method cannot ensure that the cross-sectional shape of the tunnel remains stable during the excavation process.
And in order to realize the step-by-step excavation of the tunnel, many drainage pipes need to be buried in the transparent soil, which affects the accuracy of the experiment

Method used

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  • Novel transparent soil model test device for simulating tunnel excavation and test method thereof
  • Novel transparent soil model test device for simulating tunnel excavation and test method thereof
  • Novel transparent soil model test device for simulating tunnel excavation and test method thereof

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Embodiment 1

[0042] see figure 1 , this embodiment discloses a new type of transparent soil model test device for simulating tunnel excavation, including a model box 3 arranged on a test platform, a tunnel model, a tunnel excavation support 8 and an imaging device.

[0043] see figure 2 , the model box 3 is a transparent rectangular box with an open upper end and a hollow interior. The four sides of the mold box 3 are respectively defined as first, second, third and fourth sides. A hole I301 is prefabricated on the first side. A hole II 302 is prefabricated on the third side.

[0044] see Figure 6 , the tunnel model includes four hollow plexiglass tubes 7 whose diameters increase sequentially. The lengths of the four plexiglass tubes 7 decrease as the diameter increases. see Figure 4 , the outer wall of the plexiglass tube 7 has a scale mark 701 along the axial direction. A pulling head 702 is also arranged on the outer wall of the plexiglass tube 7 . The four plexiglass tubes ...

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Abstract

The invention provides a novel transparent soil model test device for simulating tunnel excavation and a test method thereof. The test device comprises a model case arranged on a test platform, a simulated tunnel structure and an imaging apparatus. The model case is a transparent rectangular box. Holes are prefabricated on two opposite side wall surfaces of the model case. Two ends of the simulated tunnel structure are respectively embedded into the holes on the two side wall surfaces of the model case. The model case is filled with transparent soil. During test, two laser emitters form two speckle sections inside the transparent soil. The test method of the device includes the steps of design of an experimental scheme, installation of the simulated tunnel structure, allocation of transparent soil, test and the like. In the process of moving an organic glass tube, the device reads the scale value on the organic glass tube surface so as to obtain the stratum loss generated by each movement, can well verify the engineering practice, reduces the disturbance of organic glass tube to the transparent soil body, and improves the experimental accuracy.

Description

technical field [0001] The invention relates to the field of civil engineering construction, in particular to a novel transparent soil model test device for simulating tunnel excavation and a test method thereof. Background technique [0002] In the past two decades, the continuous development of economy and technology has made my country's comprehensive national strength increasingly stronger, and infrastructure construction has achieved unprecedented development. In terms of tunnel and underground space technology, China has become the country with the largest construction scale, the largest number of constructions, and the most complex geological conditions and structures in the world. Therefore, it is very necessary to study the deformation law of the tunnel during the excavation process. [0003] The basic principle of transparent soil is to use transparent granular materials and pore liquids with the same refractive index to mix and discharge air to obtain transparent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 仉文岗陈福勇张艳梅
Owner CHONGQING UNIV
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