Deformation measurement device and method for plane-symmetric deeply-buried model tunnel
A technology of deformation and tunnel, which is applied in the direction of measuring devices, optical devices, instruments, etc., can solve the problems of tunnel expansion, small size, and influence on the correct simulation of tunnel and surrounding soil, and achieve the effect of accurate data and simple layout
Active Publication Date: 2015-04-08
HUAQIAO UNIVERSITY
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Problems solved by technology
Due to the small size of the model tunnel and the narrow space inside the tunnel, it is difficult to deploy the existing measurement methods inside the tunnel
The arrangement of too many sensors will also increase the uncertainty in the test process, especially how to ensure the normal operation of the sensors in the complex environment of the supergravity field in the geotechnical centrifuge model test has become a challenge
If the measuring device is arranged outside the model tunnel, the laying of too many electronic circuits will affect the correct simulation of the interaction surface between the tunnel and the surrounding soil, thereby affecting the reliability of the test results
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[0020] Examples, see figure 1 and figure 2 , a deformation measurement device for a deeply buried model tunnel under the condition of plane symmetry, including a model tunnel 1, an observation glass 2, a vault vault bottom sealing component 3, several displacement tracking units 4, a displacement acquisition and analysis component 5 and an end face Seal assembly6. The model tunnel 1 is a plane symmetrical structure, and the half structure on one side of the symmetrical plane is close to one side of the observation glass 2, that is, the observation glass 2 can be arranged at the position of the symmetrical plane. The observation glass 2 has a certain thickness to ensure that it will not be significantly deformed under the horizontal earth pressure, thereby ensuring that the width of the gap between the observation glass 2 and the model tunnel 1 is consistent along the axis of the model tunnel 1 .
[0021] The vault vault seal assembly 3 includes an L-shaped vault baffle 31 a...
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The invention discloses a deformation measurement device for a plane-symmetric deeply-buried model tunnel. The device comprises a model tunnel, observation glass, an arch crown and arch bottom sealing component, a plurality of displacement tracking units and a displacement acquisition and analysis component, wherein the half structure of one side of the symmetric surface of the model tunnel is closely attached to one side of the observation glass; the arch crown and arch bottom sealing component is arranged between the outer sides of the arch crown and the arch bottom of the model tunnel and the observation glass; the displacement tracking units are axially distributed on the inner sides of the arch crown and the arch bottom, and are used for observing the deformation of the tunnel; the displacement acquisition and analysis component is arranged on the other side of the observation glass, and is used for acquiring the positions of the displacement tracking units and analyzing the deformation of the tunnel. The invention further discloses a measurement method based on the device. The device and the method can be applied to the measurement of model tunnels with different sizes and shapes.
Description
technical field [0001] The invention relates to a geotechnical model detection technology, in particular to a deformation measuring device and method for a plane symmetrical deep-buried model tunnel. Background technique [0002] In the small-scale physical model test of geotechnical engineering, the deformation observation of tunnels buried deep in the soil has always been a difficult problem. At present, it is mostly carried out by means of model tunnel strain measurement, tunnel radial deformation measurement, and displacement transmission device extension measurement. Due to the small size of the model tunnel and the narrow space inside the tunnel, it is difficult to deploy the existing measurement methods inside the tunnel. The arrangement of too many sensors will also increase the uncertainty in the test process, especially how to ensure the normal operation of the sensors in the complex environment of the hypergravity field in the geotechnical centrifuge model test h...
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IPC IPC(8): G01B11/16
Inventor 蔡奇鹏吴中汉陈星欣陈士海徐鑫颜培煌徐娟娟
Owner HUAQIAO UNIVERSITY