An image-related test model device for mining rock and soil deformation under the action of a vehicle
An image correlation, deformation test technology, applied in the direction of using optical devices, measuring devices, using stable tension/pressure to test the strength of materials, etc. Simple structure, reasonable design, accurate deformation process effect
Active Publication Date: 2021-04-23
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology
Previous studies on similar model tests seldom involve the influence of railway operation on the crack evolution and long-term deformation of mining cracked rock mass.
There is a lack of a model test device for on-board action in similar model test devices
In addition, burying displacement sensors and stress sensors is a conventional monitoring method for traditional similar material model tests, but to obtain monitoring data in multiple areas requires a large number of buried displacement and stress sensors. This method often affects the integrity of model laying and rock and soil structures. sexual influence
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[0021]Such asFigure 1 - Figure 5An image-related vehicle-in-vehicle action is pulled by a geoscum deformation test model, including a model laying frame 15, and a baffle 9 is provided before and after the model laying frame, the front baffle is a transparent baffle, preferably transparent temperate Glass baffle, facilitating image acquisition, model laying frame in the bottom plate 17, laying model material, on the top of the laying model material, top flexible loading chamber 1, top flexible loading chamber, is provided with track 2 and load cars 13, The track is connected to the speed regulator 14 outside the current wire 35 and the top flexible loading chamber 1, by adjusting the current size and direction to control the vehicle speed and the direction of operation; in burying a small amount of stress strain sensor 12 in the model material, i.e., in the process of laying the model material A small amount of stress strain sensor 12 is buried for monitoring stress, displacement cha...
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The invention discloses an image-related model device for a deformation test of mining rock and soil under the action of a vehicle, which is suitable for the study of the settlement and deformation of a mining cracked rock and soil under the action of a vehicle using image correlation technology, and the law of the evolution of the crack space. The device includes a model laying frame, baffles are arranged at the front and back of the model laying frame on the top of the model laying frame, the front baffles are transparent baffles, model materials are laid layer by layer on the bottom plate of the model laying frame, and the top of the laid model materials is set There is a top flexible loading room, and the left and right sides are respectively equipped with a left flexible loading room and a right flexible loading room. The bottom of the top flexible loading room is equipped with segmented loading car tracks and loading cars. The loading car tracks are controlled by current wires and speed. The sensor is connected, the stress and strain sensor is embedded in the model material, and the PIV monitoring system is installed outside the front baffle, and the collected data is transmitted to the StrainMaster processing system through the data acquisition instrument.
Description
Technical field[0001]The present invention belongs to the field of mining and geotechnical similar material simulation test techniques, and in particular, the present invention relates to an image-related vehicle-mounted test model device.Background technique[0002]Coal seam mining under the railway is a type of "three times" mining, the mining of coal seam under the railway leads to the unevenness of the undercarridge under the coal seam, and will constitute a threat to the safety operation of the railway. In addition, with the rapid expansion of domestic railway routes, the construction of railways that cross the vacuum has become an unavoidable technical problem, and the driving role generated by the train operation will disturb the relatively stable fracture rock soil. , The cracking geotechnical body produces again deformed, which in turn affects the stability of the railway street and the safe operation of the railway. The mutual impact of the two is to ensure the theoretical b...
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IPC IPC(8): G01N3/08G01B11/16
CPCG01B11/16G01N3/08
Inventor 王文学
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER