Mining rock soil deformation test model device under image correlated vehicle-mounted effect
An image correlation and deformation test technology, which is applied in the direction of using optical devices, measuring devices, and applying stable tension/pressure to test the strength of materials, etc. Simple structure, reasonable design, accurate deformation process effect
Active Publication Date: 2018-12-14
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 as Figure 1-Figure 5 An image-related model device for the deformation test of mining rock and soil under the action of a vehicle includes a model laying frame 15, and baffles 9 are arranged at the front and back of the model laying frame, and the front baffles are transparent baffles, preferably transparent tempered The glass baffle is convenient for image acquisition. The model material is laid layer by layer on the inner bottom plate 17 of the model laying frame. A top flexible loading chamber 1 is arranged on the top of the laid model material, and a track 2 and a loading car 13 are arranged at the bottom of the top flexible loading chamber. The track is connected to the speed regulator 14 outside the top flexible loading chamber 1 through the current wire 35, and the vehicle speed and running direction are controlled by adjusting the magnitude and direction of the current; a small amount of stress and strain sensors 12 are embedded in the model material, that ...
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The invention discloses a mining rock soil deformation test model device under an image correlated vehicle-mounted effect, and is applicable for mining fractured rock soil sedimentation and deformation and the research of a fracture space evolution law under the vehicle-mounted effect simulated by adopting an image correlation technology. The device comprises a model paving frame, wherein bafflesare arranged in front of and at the back of a top model paving frame of the model paving frame; the front baffle is a transparent baffle, a model material is paved on a base plate inside the model paving frame layer by layer; a top flexible loading room is arranged at the top of the paved model material; a left flexible loading room and a right flexible loading room are arranged on the left side and the right side of the paved model material; loading vehicle tracks and loading vehicles which are sectionally connected are arranged at the bottom inside the top flexible loading room; the loadingvehicle tracks are connected with a speed controller through current leads; a stress strain sensor is buried in the model material; a PIV monitoring system is arranged outside the front baffle; and collected data is transmitted to a Strain Master processing system through a data collection instrument.
Description
technical field [0001] The invention belongs to the technical field of simulation tests of similar materials in mining and geotechnical engineering, and in particular relates to an image-related goaf deformation test model device under the action of a vehicle. Background technique [0002] The coal seam mining under the railway is one of the "three down" mining types. The mining of the coal seam under the railway will lead to uneven subsidence and deformation of the rock and soil above the coal seam and under the railway, which will pose a threat to the safe operation of the railway. In addition, with the rapid expansion and construction of domestic railway routes, it has become an unavoidable technical problem to build railways across the goaf. The dynamic load generated by the train operation will disturb the relatively stable fractured rock and soil in the goaf again. , The cracked rock and soil will deform again, which will affect the stability of the railway subgrade an...
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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