Two-way inclined ground in-out type shield launching model test device capable of being accurately controlled
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A model test device and two-way tilting technology, applied in the field of shield tunneling tests, to avoid system errors, ensure accuracy and reliability, and simplify operations
Pending Publication Date: 2021-06-18
ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY
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[0004] In order to overcome the fact that the existing shield starting model test device is not suitable for the ground access type shield starting model test, the lack of accurate electronic control means, the error of manual operation is relatively large, and the propulsion axis of the shield machine is easy to move during the shield model test. Disadvantages and deficiencies of deviation, to realize the adjustable inclined plane and inclination angle, and the accurate and reliable adjustment process of the model test initiated by the ground access shield, to provide quantitative data support and guidance for the existing ground access shield project , the present invention provides a two-way inclined ground entry and exit type shield tunneling model test device that can be accurately controlled, which can effectively overcome the shortcomings of the above-mentioned shield tunneling model test device, and can be applied to ground entry and exit at any angle and inclined surface The model test of the type shield machine is initiated, and the angle adjustment operation is highly automated, concise and clear
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[0038] (a) According to the actual situation and site conditions of the ground access shield tunneling project, the scale ratio is determined to be 1:20, the soil layer parameters are determined as shown in Table 2, the test plan is determined as shown in Table 3, and the selected diameter is Model shield machine 26 of 320mm and length of 1200mm. In order to eliminate the influence of boundary effects, a shield model box 1 with length a=6000mm, width b=3000mm, and height h=3000mm is selected, and the horizontal guide rail 3 is 200mm away from the top of the model box 1.
[0039] (b) Lay the soil mass. According to the soil layer information required by the test plan, the soil body 2 is laid. The height of the soil body 2 is 1800mm. The soil layer settings are shown in Table 2. The soil samples are all taken from the construction site. As shown in the figure, while the soil is being laid, earth pressure cells are set on both sides of the expected propulsion axis, and displacem...
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Abstract
The invention discloses a two-way inclined ground in-out type shield launching model test device capable of being accurately controlled. The device comprises a model box, a soil body, a horizontal guide rail, four travelling cranes, four vertical lead screw lifters, four vertical lead screws, a free rotating shaft, four horizontal lead screws, four horizontal lead screw lifters, a shield tunneling machine rail, a model shield tunneling machine, a shield tunneling counter-force system, a counter-force system guide rail, bolt hole sites, a shield tunneling counter-force plate, counter-force plate fixing bolts, a shield tunneling angle stabilizing system, fixing bolts, an arc-shaped frame, a handle, a limiting baffle, an angle stabilizing baffle, a spring, a cutter head, a shield body, a shield tail, a hydraulic jack, threads and an electric gear. The device can be applied to a ground in-out type shield launching model test with any angle and any inclined plane, and the angle adjustment operation is high in automation degree and simple and clear.
Description
technical field [0001] The invention belongs to the technical field of shield tunneling, and relates to a precisely controllable two-way inclined ground access type shield starting model test device, which is suitable for the ground access type shield model test. Background technique [0002] In traditional tunnel construction, in order to realize the connection between the ground section and the underground section of the tunnel, it is generally necessary to set up working wells at the starting and receiving ends of the shield. The construction method of excavation connects the ground section and the underground section. The disadvantages of the traditional construction method are: during the construction process, it is necessary to take measures such as precipitation and reinforcement of the hole, and the project risk of the shield tunnel starting and receiving is relatively high; more manpower and material resources are required to complete the construction of the connect...
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Application Information
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Patent Type & Authority Applications(China)
IPC IPC(8): G01M99/00G01N33/24
CPCG01M99/00G01N33/24
Inventor 罗战友姜茗耀邹宝平黄曼朱剑锋夏建中田敬尚李超莫林飞张佳文
Owner ZHEJIANG UNIVERSITY OF SCIENCE AND TECHNOLOGY