Earth pressure balance type pipe jacking machine simulation method and structural device for model testing
An earth pressure balance and model test technology, which is applied in earth-moving drilling, mining equipment, tunnels, etc., can solve the problems of not considering the impact of the excavation construction process, few indoor or model test studies, etc., to achieve simple structure, easy operation, Ease of installation
Pending Publication Date: 2019-09-03
SHIJIAZHUANG TIEDAO UNIV +2
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Problems solved by technology
[0004] At present, considering the excavation construction process of the front-end pipe jacking machine, there are few related indoor or model tests on pipe jacking construction, and the influence of the excavation construction process has not been considered in a few tests
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[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0035] The present application discloses a structural device of an earth pressure balance type pipe jacking machine for model testing, including a shell, a cutting head, a soil mixing bin, and a screw excavator.
[0036] The cutting head is arranged at the front end of the structural device of the earth pressure balance type pipe jacking machine for the model test, and the cutting head is used to cut the soil; The excavation blade foot 2 is ring-shaped, and it...
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The invention relates to the technical field of large-scale physical model testing in the pipe jacking tunneling construction process, and discloses an earth pressure balance type pipe jacking machinestructural device for model testing. The device is used for geomechanics model testing in the geotechnical engineering. The device comprises a shell, a cutting knife bit and a spiral earth discharging device. The cutting knife bit is arranged at the forefront end of the pipe jacking machine structural device and comprises an excavation blade foot, the excavation blade foot is annular, and the front end of the excavation blade foot is an inclined face. The shell is connected with the cutting knife bit arranged at the front end. The spiral earth discharging device is located in the rear half part of the shell and comprises an earth discharging device shell, a spiral blade and a transmission shaft. The transmission shaft is connected with the spiral blade and drives the spiral blade t rotate. The device is simple in structure and convenient to use, and foundations are laid for relevant model testing study of heterotaxis, earth pressure changes, duct piece stress conditions and the like in the pipe jacking tunnel construction process.
Description
technical field [0001] The invention relates to the technical field of large-scale physical model tests in the construction process of pipe jacking, which is used for geomechanical model tests in geotechnical engineering, and relates to an earth pressure balance type pipe jacking machine simulation method and structural device for model tests. Background technique [0002] With the development of society and the rapid growth of population density, people are also accelerating the pace of urban underground space development. As the main forms of urban underground space development and utilization, rail transit, urban pipe corridors, and underground power pipe networks often need to pass through Build (construct) densely built areas. Since the traditional open-cut construction method is severely restricted in these areas, it is a trend and inevitable to adopt the underground excavation construction method that has relatively little impact on the ground and the surrounding envi...
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IPC IPC(8): E21D9/10E21D9/12E21D9/00
CPCE21D9/1006E21D9/124E21D9/00
Inventor 李文江刘保安王康卜新宝刘浩陈涛李令扬池丽钧李乾赵远韩现民
Owner SHIJIAZHUANG TIEDAO UNIV