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Three-dimensional similar simulation device and three-dimensional test monitoring method for overlying strata motion

A similar simulation and three-dimensional technology, applied in measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc., can solve sensor monitoring data without continuity and difficult internal forces inside the model Changes in real-time monitoring and other issues, to achieve the effect of small disturbance, convenient layout, and ensure the safety of the test

Pending Publication Date: 2022-03-01
SHENHUA SHENDONG COAL GRP +2
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  • Claims
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AI Technical Summary

Problems solved by technology

However, the sensor monitoring data is not continuous, and it is difficult to monitor the internal force changes inside the model in real time, which has certain limitations. Therefore, it is necessary to propose a method that can monitor the internal structure changes of similar material models in detail.

Method used

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  • Three-dimensional similar simulation device and three-dimensional test monitoring method for overlying strata motion
  • Three-dimensional similar simulation device and three-dimensional test monitoring method for overlying strata motion
  • Three-dimensional similar simulation device and three-dimensional test monitoring method for overlying strata motion

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Embodiment 1

[0081] According to the comprehensive hydrogeological histogram of a mine and the results of indoor rock mechanics parameters, aggregates and cementing materials are selected for proportioning test. The model selection is carried out on a similar simulation test bench, and the height of the similar material model is: length × width × height = 1400mm × 1400mm × 1400mm.

[0082] a. Set the steel plate beam at the top of the testing machine, that is, the top beam;

[0083] b. Preliminary laying of similar materials to a height of 40cm from the bottom plate of the testing machine;

[0084] c. Fix the delamination instrument indicator on the set steel plate beam, pull out the measuring steel wire, and arrange the deep base point anchor at the base point of the similar material surface, such as figure 2 . Continue to bury similar materials, embed the anchor pads in the material model and fix them;

[0085] d. Bury similar materials to a height of 50cm, arrange the lower shock wa...

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Abstract

The invention relates to a three-dimensional similar simulation device and three-dimensional test monitoring of overlying strata motion. The three-dimensional similar simulation device comprises a similar simulation test bed, one or more bed separation instruments and a shock wave monitoring device, wherein the shock wave monitoring device comprises one or more shock wave excitation devices and one or more shock wave receiving and analyzing devices. According to the method, the wave velocity distribution condition in the material model is monitored through a shock wave monitoring device such as an earthquake CT, the stress distribution condition is deduced according to the wave velocity, the model surface subsidence condition is detected through a bed separation instrument, and the overall change condition of the overlying strata structure of the similar material model is monitored by combining the two conditions.

Description

technical field [0001] The invention relates to the technical field of mining engineering, in particular to a three-dimensional similar simulation device and a three-dimensional test monitoring method for overlying rock movement. Background technique [0002] Overburden movement law refers to a series of change laws of overlying strata caused by mining, which is an important part of mine engineering research. The three-dimensional similar material simulation experiment can use the artificial proportioning materials similar to the physical and mechanical properties of natural rocks according to the field data and the physical properties of coal rocks to shrink the model according to a certain proportion, and then excavate the roadway or simulate the stope in the model It is an important method to study the law of overlying rock movement in order to speculate what happened in the original site. [0003] In the three-dimensional similar material simulation test, pressure senso...

Claims

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Application Information

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IPC IPC(8): G01N29/04G01N29/07
CPCG01N29/045G01N29/07G01N2291/011G01N2291/0232G01N2291/02827
Inventor 赵勇强张凯李全生郭俊廷杨英明刘新杰张国军邢朕国
Owner SHENHUA SHENDONG COAL GRP
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