深部开采煤岩瓦斯动力灾害统一发生机制及监测技术

为研究深部开采冲击地压、煤与瓦斯突出及其复合动力灾害的发生机制,并对其进行有效监测预警,运用事故调研、理论分析、工程实践等方法,分析了我国煤岩瓦斯动力灾害的影响因素,研究了其发生的统一机制和监测技术。结果表明:煤岩瓦斯动力灾害是冲击、突出共性因素和个性因素共同影响下的结果;根据灾害发生过程中能量释放的主体和形式,将煤岩瓦斯动力灾害分为冲击地压、煤与瓦斯突出、冲击-突出型复合动力灾害、突出-冲击型复合动力灾害4种类型;采用多层次统一监测模式,可对深井煤岩瓦斯动力灾害进行全方位连续的统一监测。最后将研究成果应用于煤矿现场实例,效果良好。

Consequential mechanism and the monitoring technique for the gassy coal-rock dynamics disaster in the deep mining

The present paper intends to introduce our study on the occurrence mechanism and effective monitoring technique of rockbursts,outbursts and their composite dynamic disasters in the case of deep coal-mining.To achieve the purpose,we have carefully investigated and made a general revision of the influential or involved factors of such dynamic disasters in different coal mines in the domestic sphere.And,then,we have made intensive analysis of the influential factors of some main gassy coal-rock dynamic disasters on the above said basis in the country.It is also for the said purpose that we have done a comprehensive examination and inspection of the underlying mechanism that may account for the occurrence of such disasters.What is more,in order to investigate the united monitoring technique for such coal-rock dynamic disasters in coal mining,we have managed to develop a unified monitoring system.And,finally,we have applied the unified monitoring tactics to two actual coal mines,which has enabled us to apply the above said monitoring methods to the coal mining accident research,to the theoretical analysis and engineering practice and so on.The results of our work demonstrate that,it is most probable for such dynamic disasters to take place in coal mining due to the joint or intermingled influential factors and some other individual factors of the rockburst and outburst.And,then,according to the subject and form of energy release in the evolving or progressively accumulated processes of disastrous factors,it would be possible to classify such gassy coal-rock dynamic disasters in coal mining into four categories,that is,the rockburst,the outburst,rockburst-outburst composite dynamic disasters and outburst-rockburst mixed dynamic disasters.And,thirdly,it can be concluded that such gassy coal-rock dynamic disasters in deep mining can be monitored in an integrated and continuous way by using the model for monitoring the disasaters of the multi-level and all-in-one nature.On the other hand,it would be possible to obtain the favorable benefits on the condition when the results of our study in this paper can be applied to the coal mines.Therefore,the comprehensive integrated monitoring technique proves to be reasonable and effective.