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Testing device and method of ground deformation caused by simulating metro shield tunnel construction

A technology for tunnel construction and subway shield tunneling, which is applied in the testing of machines/structural components, measuring devices, soil material testing, etc. It can solve problems such as inability to obtain exact relationships, and achieve easy installation and operation, simple assembly and disassembly, The effect of saving test cost

Inactive Publication Date: 2013-05-15
BEIJING UNIV OF TECH
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Problems solved by technology

[0003] In the existing simulation devices and methods, there is a common shortcoming, that is, it is impossible to realize the simple and accurate control of the formation loss when simulating the construction of the shield tunnel, and correspondingly, the formation loss rate and the overlying rock and soil mass cannot be obtained. exact relationship between deformations

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  • Testing device and method of ground deformation caused by simulating metro shield tunnel construction
  • Testing device and method of ground deformation caused by simulating metro shield tunnel construction
  • Testing device and method of ground deformation caused by simulating metro shield tunnel construction

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing and specific implementation method, the present invention will be further described:

[0036] like Figure 1 to Figure 5 Shown is the core device used in this method, that is, a test device for simulating formation deformation caused by subway shield tunnel construction, including a model box and formation system, tunnel simulation system, formation loss simulation system, and surface settlement measurement system.

[0037] Model box and stratum system, including model box frame 1, tempered glass block 2, reference steel beam 5, similar material soil layer 6, marking line (layer) 7, tunnel hole 18, water inlet pipe and drainage pipe hole 19; model box frame 1 is connected with the tempered glass block 2 to form a model box, the soil layer 6 of similar material is filled into the model box in layers and compacted, and the marking line (layer) 7 is implanted at the depth where the internal soil layer settlement needs to be ob...

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Abstract

The invention discloses a testing device and a method of ground deformation caused by simulating metro shield tunnel construction, and belongs to the technical field of underground engineering experiments. The overall process that similar materials are used for simulating soil layer structures, a tunnel simulating device is used for simulating tunnel structures, and a ground loss simulation system is used for simulating disturbed soil around a tunnel and ground loss is included. After the installation of the device is completed, the ground loss simulation system is started, an airtight water bag which is filled with water by using a pressure water pump in advance is drained step by step through a drain pipe, and water discharge is accurately controlled through a water stop valve and a measuring tank. Moreover, the water discharge is recorded, the ground loss is simulated, a corresponding stratum is deformed, and then the earth surface subsides, the surface subsidence is accurately measured through a dial indicator, and a measured value is recorded. Stratum loss ratio is calculated out through conversion, and the stratum loss ratio and the subsidence measured value are made into forms and images together, and thereby the relation between the stratum loss ratio under different stratum structures and the surface subsidence can be measured out simply, conveniently and accurately.

Description

Technical field: [0001] The invention belongs to the technical field of underground engineering experiments, can simulate the process of formation deformation caused by shield tunnel construction, simply and accurately describe the relationship between the surface settlement displacement S and the formation loss rate P, and provide a basis for the optimization of design and construction schemes. It can effectively predict the potential safety hazards of existing buildings and structures around the construction site. Background technique: [0002] In the existing shield tunnel construction model experiment technology, most of them focus on the shield tunneling machine model technology, loading technology, three-dimensional photogrammetry technology for model deformation, digital photo deformation measurement technology, and research on the ratio of tunnel model materials. It mainly solves the stress problem of the segment structure, the interaction problem between the tunnel ...

Claims

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Application Information

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IPC IPC(8): G01M99/00G01N33/24
Inventor 姚爱军王成房师军彭虎翟玉新
Owner BEIJING UNIV OF TECH
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