Large true-triaxial simulation test stand for tunnel roof support
A technology for simulating test benches and roadway roofs, applied to teaching models, educational tools, instruments, etc., can solve problems such as the inability to simulate and analyze the three-axis force state of the roadway model, and achieve the effect of accurate theoretical basis
Pending Publication Date: 2017-04-26
TIANDI SCI & TECH CO LTD
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[0005] The invention provides a large-scale true triaxial roadway roof support simulation test bench to solve the problem that the roadway model test bench in the prior art is a plane model test bench, and the roadway model cannot be simulated and analyzed on the triaxial force state
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[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.
[0029] Such as Figure 1 to Figure 7 Shown, a kind of embodiment of the large true triaxial roadway roof support simulation test bench of the present invention. The large true triaxial roadway roof support simulation test bench of this embodiment includes: a base, a bracket, a vertical loading unit and a horizontal loading unit. Among them,...
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The invention relates to the technical field of tunnel support, especially to a large true-triaxial simulation test stand for tunnel roof support. The simulation test stand comprises a pedestal, a support frame, vertical loading unitd, and a horizontal loading unit. The pedestal is used for placing a tunnel model. The support frame is arranged around the outer side of the pedestal. The vertical loading unit arranged on the pedestal is used for applying a downward Z-direction load on the tunnel model. And the horizontal loading unit arranged at the support frame is used for applying an X-direction extrusion load and a Y-direction extrusion load on the tunnel model. Therefore, a simulation analysis of a three-axis stress state can be carried out on the tunnel model; various three-axis stress states can be simulated by changing Z-direction, X-direction, and Y-direction loads; and a simulation analysis of a three-axis stress state of a tunnel model with a largest scale of 1 to 2 can be realized, so that an accurate theoretical basis is provided for a tunnel roof support design and construction.
Description
technical field [0001] The invention relates to the technical field of roadway support, in particular to a large true triaxial roadway roof support simulation test bench. Background technique [0002] At present, most foreign mine model test benches are for model test research on stopes, such as the 10m stope model test bench in Utah, USA, which has done a lot of research on simulating mine pressure in stopes; former West Germany Essen rock mechanics research The center is on the 10m-long stope plane strain simulation test bench, and more than 1,000 tons of external load are applied to obtain the interaction relationship between the bracket and the surrounding rock that is very similar to that of the underground; the Australian Coal Industry Research Institute has a size of 10.2m×1.9m× The 0.4m ACIRL working face model test rig was used to study issues such as the slump properties of the roof stratum, the initial support force and working resistance of the support, the influ...
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IPC IPC(8): G09B25/00
CPCG09B25/00
Inventor 康红普杨景贺吴拥政邵培森李建忠蔡嘉芳
Owner TIANDI SCI & TECH CO LTD