CAJ | 학술논문

以处于固定应力环境中的含不同压力瓦斯的煤样瓦斯放散过程为研究对象，以瓦斯逐渐放散过程中煤样的轴向应变、横向应变为研究参数，系统地研究了瓦斯逐渐放散过程中煤样的变形特性与规律。结果表明：在一定外力环境下，煤样逐渐放散瓦斯后其轴向应变、横向应变变化均表现为一个明显的非线性过程；轴向应变变化规律呈三段式，存在一个瓦斯放散速度点使煤样轴向应变开始以较大速率增加，瓦斯放散速度与产生的轴向应变可用改进的乘幂关系表征；横向应变变化规律呈明显的非线性；试验结束时，随着瓦斯压力的增加煤样产生的总横向应变也呈明显的非线性；瓦斯压力大小对于瓦斯放散过程中煤样产生的轴向应变、横向应变均有明显影响，主要表现为开始出现应变处对瓦斯放散速度的敏感性、产生变形总量和产生变形过程与瓦斯放散速度的关联性等方面。
이처우고정응력배경중적함불동압력와사적매양와사방산과정위연구대상，이와사축점방산과정중매양적축향응변、횡향응변위연구삼수，계통지연구료와사축점방산과정중매양적변형특성여규률。결과표명：재일정외력배경하，매양축점방산와사후기축향응변、횡향응변변화균표현위일개명현적비선성과정；축향응변변화규률정삼단식，존재일개와사방산속도점사매양축향응변개시이교대속솔증가，와사방산속도여산생적축향응변가용개진적승멱관계표정；횡향응변변화규률정명현적비선성；시험결속시，수착와사압력적증가매양산생적총횡향응변야정명현적비선성；와사압력대소대우와사방산과정중매양산생적축향응변、횡향응변균유명현영향，주요표현위개시출현응변처대와사방산속도적민감성、산생변형총량화산생변형과정여와사방산속도적관련성등방면。
In this paper, taking gas emission process of coal containing different pressure gas in fixed-stress environment as the research object, and taking the axial and transverse strains in gas emis-sion process as study parameters, the coal sample deformation law in gas emission process was studied systematically. The results show that in a certain external stress environment, the evolution law of both the axial strain and transverse strain in gas emission process present obvious nonlinear characteristics. The axial strain of coal sample law presents three-step style, and there exits one point of gas emission speed make the axial strain start to increase in a larger rate, while the relationship between gas emission speed and axial strain can be expressed by improved power function The total transverse strain also shows obvious nonlinear characteristics at the end of experiment. The size of gas pressure has obvious effect on axial strain and transverse strain in process of gas emission,which mainly is manifested in the sensitivity between strain appear point and gas emission speed, and the correlation between total strain, strain formation process, and gas emission speed, etc.