Centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction

A technology for shield tunneling and surface subsidence, which is used in measurement devices, tunnels, surveying and mapping, and navigation, etc., can solve problems such as delayed monitoring, difficulty in obtaining soil parameters, and damage, achieve strong scalability, shorten research time, and promote The effect of theoretical research
CN102071943AInactive Publication Date: 2011-05-25SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2011-05-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of tunneling in geotechnical engineering and underground engineering, and particularly relates to a centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction. The testing device mainly comprises a model box, a small displacement meter bracket, a big displacement meter bracket, a tunnel excavation device, a linear variable differential transformer (LVDT) displacement meter and the like, wherein the model box is a hollow cuboid; the small displacement meter bracket and the big displacement meter bracket adjust the LVDT displacement meter along the horizontal direction and the vertical direction, so that the surface subsidence and the soil layer deformation can be measured; and the tunnel excavation device can simulate the soil body deformation caused by stratum loss by discharging a certain volume of water. Through the device, the deformation influence of the city shield tunnel construction on surrounding soil layer can be more conveniently, really and effectively simulated, so more real and accurate experimental data can be provided for tunnel design and construction, and high efficiency and safety of the city shield tunnel construction are guaranteed.
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Description

technical field

[0001] The invention belongs to the field of tunnel engineering in geotechnical and underground engineering, and in particular relates to a centrifugal test simulation test device for surface subsidence induced by urban shield tunnel construction. Background technique

[0002] In recent years, the rapid improvement of my country's urbanization level has led to the rapid development of urban underground rail transit systems. Shield method tunnel construction is more and more widely used in the construction of underground railway because it can have a small impact on ground traffic. This construction method has become an important construction method in my country's urban underground rail transit system. However, during the construction of the tunnel, due to the limitations of geological conditions and construction technology, the imbalance between the support pressure of the shield machine pressure chamber and the formation soil and water pressure caused the m...

Claims

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