煤岩与瓦斯微元体破坏突出机理

1.西安科技大学 能源学院,陕西 西安 710054; 2.陕煤澄合矿业有限公司,陕西 澄城 715200; 3.陕西煤业化工集团有限公司,陕西 西安 710054

煤岩微元体; 突出破坏概率; 能量条件; 突出机理

Mechanism of coal and gas outburst with microelement destruction
XU Man-gui1,DONG Kang-qian1,DONG Yang-cun2,ZHU Zhao-wei1,3,CHEN Min-qing2

(1.College of Energy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,China; 2.Shaanxi Chenghe Mining Co.,Ltd.,Chenghe 715200,China; 3.Shaanxi Coal and Chemical Industry Group Co.,Ltd.,Xi'an 710054,China)

microelement; probability of outburst destruction; energy condition; mechanism of outburst

备注

煤岩与瓦斯突出是地应力、瓦斯压力、煤体结构破坏、孔洞内煤屑与瓦斯压力及时间效应等共同作用的结果。文中从煤与瓦斯突出发生的整个过程出发,结合现有的煤岩与瓦斯突出机理的研究成果,通过建立煤岩微元体破坏模型,计算煤岩微元体区域破坏概率、煤与瓦斯突出所必须的能量条件,分析煤与瓦斯突出区域的形成与发生,最后,提出了煤岩与瓦斯的突出是从煤岩体微元的破坏开始的,其发展、发育过程是众多煤岩体微元连续破坏的结果,得到了突出区域煤岩体破坏概率的平均强度以及发生突出的必须能量条件关系式,为煤与瓦斯突出的研究提出了一个新的模式与思路,对于防治煤岩与瓦斯突出事故、灾害的发生具有一定的实践与理论指导意义。

Coal and gas outburst is the coefficient consequence of crustal stress,gas pressure,coal body structure destruction,coal dust and gas pressure in holes and time effect,etc.The article is based on the whole course that coal and gas outburst happens,integrates research achievements of present coal and gas outburst mechanism,through establishing the damage model of coal and rock microelement,calculates the destruction probability of coal and rock microelement area and the necessary energetic condition of coal and gas outburst,analyses the form and happening of coal and gas outburst area,and finally, comes up with the statement that coal and gas outburst starts from the destruction of microelement,whose development process is the result of numerous microelement which destroys continuously,obtains the mean intensity of probability coal body destroyed in outburst area and the essential comparison expression about energy condition in the course of outburst,which provides a new model and thinking for the study of coal and gas outburst,and has some practice and theoretical guidance significance for coal and gas outburst and the happening of gas outbursts accidents and disasters.