CAJ | 학술논문

从理论上对煤体孔隙壁面扩展位移进行了分析，在此基础上，提出了外力扰动条件下的瓦斯吸附分子转变为游离态的判断依据；开展了外力扰动条件下的煤样瓦斯解吸实验方案设计与实施，并对实验数据进行了处理；对扰动诱导煤与瓦斯突出等动力灾害的机理提出了新的解释。研究结果显示，在外力扰动条件下，煤体对瓦斯的吸附平衡被打破，游离瓦斯所占的比例有所增大，瓦斯压力上升，煤与瓦斯突出等动力灾害发生的动力增加。
종이론상대매체공극벽면확전위이진행료분석，재차기출상，제출료외력우동조건하적와사흡부분자전변위유리태적판단의거；개전료외력우동조건하적매양와사해흡실험방안설계여실시，병대실험수거진행료처리；대우동유도매여와사돌출등동력재해적궤리제출료신적해석。연구결과현시，재외력우동조건하，매체대와사적흡부평형피타파，유리와사소점적비례유소증대，와사압력상승，매여와사돌출등동력재해발생적동력증가。
The expanding displacement of porous coal wall was theoretically analyzed,and then the j udgement that the adsorbed methane molecules converted to free state under the exterG nal disturbing force was proposed.The methane desorption experiments of coal samples were carG ried out under the external disturbing force and the obtained data were organized.Moreover,the new explanation was put forward for the mechanism of dynamic disasters such as the coal and gas outburst induced by external disturbance.The results showed that the adsorption equilibrium of methane on coal body was broken due to the external disturbance.The proportion of free methane increased,resulting in the increase of methane pressure.So the driving force of coal and gas outG burst also increased.