Laboratory model test device for testing influence on operating tunnel from vertically-overlapped tunnel construction

An indoor model and test device technology, applied in teaching models, educational appliances, instruments, etc., can solve the problems of erroneous monitoring information, large amount of calculation, difficult to obtain soil physical and mechanical parameters, etc., and achieves good extensiveness and strong scalability. Effect
CN103996348AActive Publication Date: 2014-08-20UNIV OF SHANGHAI FOR SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SHANGHAI FOR SCI & TECH
Publication Date
2014-08-20

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Abstract

The invention relates to a laboratory model test device for testing the influence on an operating tunnel from vertically-overlapped tunnel construction. An uplink lining model and a downlink lining model of an existing tunnel are longitudinally and symmetrically placed in parallel inside a model box. An uplink lining model and a downlink lining model of an excavated tunnel are transversely and symmetrically placed in parallel above and below the uplink lining model and the downlink lining model of the existing tunnel. Strain meters adhere to the inner walls of the uplink lining model and the downlink lining model of the existing tunnel and pressure cells adhere to the outer walls of the uplink lining model and the downlink lining model of the existing tunnel. The uplink lining model and the downlink lining model of the excavated tunnel are divided into multiple lining sections. The lining sections are separated through thin rubber boards. Displacement meter supports are fixed to the top face of the model box and multiple displacement meters are fixed to the uplink lining model and the downlink lining model of the existing tunnel, the uplink lining model and the downlink lining model of the excavated tunnel and the stratum soil mass surface through the corresponding displacement meter supports respectively. An excavation construction simulation device comprises a latex film surrounding the lining models of the excavated tunnel and an annular liquid cavity formed between the lining models of the excavated tunnel and the latex film. One end of the annular liquid cavity is provided with a liquid injection guide pipe and the other end of the annular liquid cavity is provided with a liquid drainage guide pipe.
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Description

technical field

[0001] The invention relates to a tunnel project in an urban underground construction project, in particular to an indoor model test device for the influence of upper and lower overlapping shield tunnel construction on existing operating tunnels. Background technique

[0002] As my country's urbanization process continues to intensify, the contradiction between urban development and the shortage of land resources has become increasingly prominent, and the development and utilization of urban underground space resources has become one of the important directions for sustainable social development. Shield tunneling in urban soft soil areas has been widely used in underground engineering construction due to its advantages such as less impact on the surrounding environment, adaptability to soft geological conditions, and faster construction speed. However, in actual construction, due to the constraints of many factors such as surface buildings, underground pile f...

Claims

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