The coal mass around deep roadways are often disturbed by mining activities from far to near

while bearing high ground stress loads. As a result

the internal crack damage continues to develop in a stress path similar to the gradual loading and unloading of high stress. If they are still under the influence of water and rock interaction

their bearing capacity will further deteriorate. The water absorption characteristics

wave velocity comparisons

mechanical experimental analyses

and acoustic emission monitoring of deep coal samples from a mine indicate that the deep coal samples containing water exhibit characteristics including rapid water absorption

easy saturation

and overall integrity enhancement after water saturation

and they are mainly characterized by the tensile failure of the open main control crack

which causes the overall failure of the specimen. According to the above characteristics

a loading beam main control crack model is optimized and established herein by combining some factors such as the water content

crack parameters

and system size. The mechanism of the instability characteristics mentioned above deep water-bearing coal samples was elaborated

and the sensitivity analysis and strength verification were conducted. The obtained results were in good agreement with the experimental data

which can serve as a reference for similar experimental research

theoretical modeling

and mining design of fractured coal-rock mass located in deep high stress disturbed water-rich roadways.