Surrounding rock progressive failure tunnel model test device
A technology of tunnel model and test device, which is applied to measurement devices, preparation of test samples, force/torque/work measuring instruments, etc., can solve the problems of poor compaction uniformity, low degree of automation, and difficult control of load size, etc. achieve high uniformity
Pending Publication Date: 2019-07-09
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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Problems solved by technology
However, there are still some problems in the current tunnel model test device.
[0003] (1) The existing indoor model installations generally adopt the heap load method, the load size is not easy to control, and the load accuracy is not high, and because the space of the model box is relatively narrow, it is difficult for the packing to achieve the designed compaction degree and the uniformity of the compaction Relatively poor
[0004] (2) The existing model test device has poor operability, extremely inconvenient operation, and a low degree of automation of the overall mechanism, resulting in relatively low test efficiency
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[0025] As an optimization scheme of the embodiment of the present invention, please refer to 1-3, the flattening mechanism includes a scraper 7, a first slide rail for the scraper 7 to slide, and a first driving member for driving the scraper 7 to move, The first slide rail is erected above the opening of the test box, and the first slide rail extends along a direction from one side of the test box to the opposite side thereof. In the present embodiment, flattening is realized by scraper 7, and the minimum height of scraper 7 is consistent with the height of the opening of the test box, or slightly higher than the height of the opening of the test box (preferably this scheme, so can Ensure that the compaction mechanism can be pressed to the test soil), the scraper 7 slides on the first slide rail erected above the opening, and when sliding from one side to its opposite side, the top of the soil body can be made to go back and forth like this. The driving parts used can be driv...
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The invention relates to the technical field of a surrounding rock test, and provides a surrounding rock progressive failure tunnel model test device. The surrounding rock progressive failure tunnel model test device comprises a test box for containing a soil body; an opening for placing test soil is formed at the top of the test box; the surrounding rock progressive failure tunnel model test device further comprises a flattening mechanism for striking off the top of the soil body in the test box and a compacting mechanism for compacting the soil body in the test box; and the flattening and compacting mechanisms are mounted above the opening of the test box. According to the surrounding rock progressive failure tunnel model test device disclosed by the invention, by the flattening mechanism, the soil body at the top of the test box can be flattened, and then compaction is carried out by the compacting mechanism, so that compactness which accords with a compactness requirement can be obtained; and moreover, the soil body is flattened, compacting uniformity is also very high.
Description
technical field [0001] The invention relates to the technical field of surrounding rock tests, in particular to a tunnel model test device for progressive failure of surrounding rocks. Background technique [0002] Due to the complexity and uncertainty of tunnel engineering, simple theoretical calculation and numerical analysis often differ from the real situation. The force, deformation, strain, and force of the supporting structure of the tunnel surrounding rock are not only of great significance to the study of tunnel theory, but also can guide the design and construction of tunnel engineering more reasonably. The model test can more accurately reflect the progressive failure process of the surrounding rock and the interaction mechanism between the support structure and the surrounding rock, and further explore the support mechanism and properties of the tunnel. However, there are still some problems in the current tunnel model test device. [0003] (1) The existing ind...
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IPC IPC(8): G01N1/28G01N1/36G01L5/00
CPCG01N1/286G01N1/36G01L5/0028G01N2001/366
Inventor 陈智慧刘振李天降梁波任兆丹赵宁雨张双茁张扬帆屈建荣
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP