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Test method for deep rock explosion process model

An experimental method and process model technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of simulating rockburst process, differences, and inability to explain rockburst phenomena well

Active Publication Date: 2007-10-10
CHINA UNIV OF MINING & TECH (BEIJING)
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Problems solved by technology

The mechanical test of Xu Linsheng et al. limited the occurrence of rockburst phenomenon due to the displacement control; the opening simulation test obtained several characteristics of the failure stress, but the results were quite different from the real rockburst phenomenon.
Therefore, many rockburst mechanical test results have not really simulated the rockburst process, and cannot well explain the rockburst phenomenon in actual engineering. At the same time, the research on the rockburst mechanism lacks an experimental basis, which in turn affects the prediction and disaster control. advances in technology

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  • Test method for deep rock explosion process model
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  • Test method for deep rock explosion process model

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[0028] specific implementation plan

[0029] The actual situation when the rockburst occurs is: the on-site roadway is generally 3-4 meters high, and the depth of the rockburst is about 0.1 meters, which is about 1 / 30-1 / 40 of the depth of the roadway; the width of the rockburst is 1 / 8-1 / 8 of the roadway. 1 / 10, the height of the rockburst surface is approximately equal to the width; according to the above, the specimens designed for rockburst experiments are generally plate-shaped cuboids, called rockburst structures. Rockburst structures in different geology are not exactly the same. In this scheme, the maximum side length is about 150mm. In this example, 150mm×60mm×30mm is selected. In the actual experiment, it can be selected in the range of 150mm (±5mm)×60mm (±6mm)×30mm (±3mm). The error of the unevenness of the end surface of the length of the test piece shall not be greater than 0.05mm, the error of the height shall not be greater than 0.3mm, and the deviation of the per...

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Abstract

A model testing method of deep rock burst includes carrying out true three shafts loading on rock burst simulation unit then applying unload at single surface, carrying out rock burst test on rock body when load is charged and discharged for realizing rock burst model test in laboratory.

Description

technical field [0001] The invention relates to a deep rockburst process model experiment method, which belongs to the field of deep mine engineering rockburst disaster model experiment research field, and in particular relates to the true triaxial unloading rockburst model experiment field. Background technique [0002] Rockburst is a common unloading damage geological disaster phenomenon in underground engineering in high geostress areas. The earliest record of rockburst was found in the South Stamford Coalfield in England in 1738. So far, domestic and foreign scholars and experts have conducted a lot of research on rockburst. Some achievements have been made in two aspects of rockburst mechanism and experimental research. In terms of rockburst experimental research, there have been attempts from uniaxial compression tests, biaxial compression tests, conventional triaxial tests to true triaxial tests, etc. And based on the effect of artificial disturbance, scholars at h...

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Application Information

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IPC IPC(8): G01N3/08G01N33/00
Inventor 何满潮
Owner CHINA UNIV OF MINING & TECH (BEIJING)
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