Coal burst
remains one of the gravest safety risks that will be encountered in mining in the
future, because the stress conditions will become more complex as mining depths increase.
Various influencing elements exist, and varied geological and mining circumstances
might result in diverse coal burst phenomena. The impact propensity of coalhas variations as a result
of the distinct physical and mechanical qualities of each. To identify the impact
propensity of coal and then understand the rules of coalburst occurrence, laboratory
tests can be conducted to identify the physical and mechanical parameters affecting
coal samples. The mechanical properties, energy absorption, and energy dissipation
characteristics of coal samples were examined experimentally in this paper using
coal samples that were taken from the mine. On the basis of the evaluation of the
impact inclination parameters for four fundamental coal samples, novel impact inclination
indicators and the relationship between the fractures in the coal sample and the
impact inclination parameters were discussed. The following are the key conclusions:
1) On-site samples of No. 15 coal from the Qi yuan Coal Mine were taken (15s) and processed in accordance
with the guidelines for the coal specimen impact inclination test. The accuracy
of the specimen was sufficient for the test. 2) Analysis is done on the mechanical
relevance and calculation techniques of the four fundamental coal sample impact
tendency characteristics, dynamic failure time (DT), elastic strain energy index
(WET), impact energy index (KE), as well as uniaxial compressive
strength (RC). 3) Regarding the rock burst danger of rock samples, the
potential use of the ratio of pre-peak and post-peak deformation modulus to Kλand the
residual elastic strain energy index CEF as the impact propensity indices
of coal samples are discussed. It is possible to utilize two new impact propensity
indices to evaluate the impact propensity of coal samples, according to test results
that reveal a linear
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