Bicircle shield soil chamber residue soil flow characteristic visual observational experiment system and method

A technology of flow characteristics, double-circle shield, applied in the direction of flow characteristics, measuring devices, instruments, etc., can solve the problem of inability to observe the flow of muck in shield soil bins, and achieve the effects of convenient disassembly, high test accuracy, safety and convenience

Inactive Publication Date: 2015-09-09
TONGJI UNIV
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Problems solved by technology

[0007] It is necessary to establish an observation and test system to solve the problem of not being able to observe the flow of muck in

Method used

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  • Bicircle shield soil chamber residue soil flow characteristic visual observational experiment system and method
  • Bicircle shield soil chamber residue soil flow characteristic visual observational experiment system and method
  • Bicircle shield soil chamber residue soil flow characteristic visual observational experiment system and method

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Embodiment Construction

[0026] The features of the present invention and other relevant features will be further described in detail below through embodiments in conjunction with the accompanying drawings.

[0027] The double-circle shield soil bin muck flow characteristic visual observation test system of the present invention includes four parts: a model soil box device, a scaled-down double-circle shield machine digging system simulation test device, a uniformly distributed load loading device and a commercial PIV digital image processing system. The uniformly distributed loading device adopts the method of stacking heavy objects; the commercial PIV digital image processing system is purchased from the market, equipped with a laser, a high-pixel camera and a PC with digital image processing software installed.

[0028] Such as figure 1 As shown, a uniform load loading device is installed above the model soil box device, a scaled double-circle shield machine excavation system simulation test device...

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Abstract

The invention discloses a bicircle shield soil chamber residue soil flow characteristic visual observational experiment system which comprises a model soil box, a reduced scale bicircle shield tunneling machine excavation system simulation test device, a uniformly distributed load loading device and a PIV digital image processing system, wherein the model soil box is filled with transparent soil and is connected with the uniformly distributed load loading device after the upper cover is dismantled; the end, provided with a partition board, of the model soil box is connected with the reduced scale bicircle shield tunneling machine excavation system simulation test device; lasers are arranged above and on the side face of the model soil box respectively; a CCD camera is adopted to acquire an image, controls image acquisition through connection with a computer, and analyzes image data. The invention further discloses a method for carrying out an observational experiment by adopting the bicircle shield soil chamber residue soil flow characteristic visual observational experiment system. With adoption of the bicircle shield soil chamber residue soil flow characteristic visual observational experiment system, a residue soil flow field of the soil chamber and a soil body displacement field in front of an excavation face can be effectively observed to provide an excellent test platform for the soil body improvement effect and setting and control of soil chamber pressure; in addition, the system is safe, convenient and rapid to dismantle, high in testing accuracy and recyclable.

Description

technical field [0001] The invention belongs to the field of tunnels and underground engineering, and relates to an observation and test system for the flow characteristics of muck in soil bins during the excavation process of a double-circle shield. Background technique [0002] With the rapid development of cities in our country, the problem of ground traffic congestion is prominent. In order to improve ground traffic conditions and rational urban layout, urban underground space is being developed and utilized. Major cities across the country are planning or implementing their own underground public transport facilities. The shield construction has the advantages of high efficiency, high degree of mechanization, strong adaptability to the ground, effective control of ground deformation and small footprint, and is widely used in the field of underground tunnel construction. [0003] As the shield tunneling method is more and more widely used in the field of underground tunn...

Claims

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Application Information

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IPC IPC(8): G01N11/00
Inventor 肖军华周顺华陈芃睿王柳善刘琤玉
Owner TONGJI UNIV
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