###### Abstract  
To investigate the influence of hydraulic permeability enhancement on the gas desorption and accumulation characteristics of water-bearing coal bodies and deeply implement hydraulic fracturing measures to prevent and control gas disasters in coal seams, isothermal adsorption/desorption tests, low-pressure CO\({}_{2}\) adsorption tests, and X-ray diffraction (XRD) tests were performed on anthrac from Anbao Coal Mine in Guizhou and bituminous coal from Huainan Pan'er Coal Mine. The study results showed that the gas desorption by kinds of water-bearing coal samples (anthracite) and bituminous coal (PE) was evidently promoted by stress. After each stress path, differences were observed between coal samples in gas desorption, which, however, presented similar variation trends. The gas desorption of the AB coal samples was greater than that of PE coal samples, and the increment of the limiting gas desorption by the AB coal samples was greater than that by the PE coal samples. The specific surface area of the AB coal samples was larger than that of the PE coal samples, and they both contained hydrophilic minerals and moisture. It was found through field observation that after hydraulic permeability enhancement acted upon water-bearing coal, the desorbed gas passively migrated under the stress action. When the coal body was free from the hydraulic stress action, gas started flowing back. The study results reveal the influence of hydraulic permeability enhancement on the accumulated gas desorption characteristics of water-bearing coal, and will be of theoretical and practical engineering significance for the prevention and control of gas disasters in coal seams using hydraulic measures. hydraulic permeability enhancement; water-bearing coal body; gas desorption; gas disaster prevention and control 2023131648. 15  
factors as the coal structure, ground stress, gas pressure, and moisture [3; 4]. The factors affecting the gas desorption state of coal bodies under complex conditions have been widely investigated by many Chinese and foreign experts and professors, and abundant results have been achieved [5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16]. At present, the research on the influencing factors of gas desorption and diffusion in underground coal bodies mainly focuses on temperature [17; 18; 19; 20], moisture [21], coal quality [22], gas pressure [23; 24], failure type [25] and so on. However, the influence of underground stress on the desorption characteristics of coal bodies have been investigated less. [PERSON] et al. [26] obtained the relationship between pore pressure and desorption amount through simulation. [PERSON] et al. [27] applied axial pressure to raw coal and figured out the relationship between gas desorption and axial pressure before and after peak intensity. [PERSON] et al. [28] experimentally found that there was a \"V-shaped\" relationship between the amount of gas desorption by loaded raw coal and stress. Considering the difficulties in coal gas desorption, poor permeability, and poor drainage effect faced in gas extraction at present, and in order to improve the stress disequilibrium (stress generates a significant influence on the gas desorption-diffusion process inside the coal body) induced by underground mining activities, the underground hydraulic permeability enhancement process was implemented to effectively enhance the permeability of the coal body. Furthermore, the influencing mechanism of hydraulic permeability enhancement stress on the desorption characteristics of water-bearing coal bodies was expounded. With bituminous coal from Huainan Pan'er Coal Mine and anthracite from Anbao Coal Mine in Guizhou as the study object, the high-pressure hydraulic permeability enhancement stress state borne by the coal body was approximately simulated under different stress action modes, followed by the isothermal desorption tests of coal samples.