关键词: 采动围岩　 能量系统　 协同演化　 韧性调控　 减灾评估 

Abstract: At present,the formation mechanism of rock burst based on the theory of energy conversion is widely accepted by many scholars. By studying the response law of the whole process of energy evolution of different modification control measures,it can provide an effective way for targeted research on the mechanism of regulation and control,and then put forward the adaptive control method. Firstly,the theoretical basis of energy evolution in the whole process of cross-scale correlation between indoor test and field surrounding rock is constructed. Secondly,combined with the commonly used water injection softening and drilling pressure relief prevention methods,following the simplified logic of the project and transitioning to the laboratory level, the regulation linkage response mechanism is revealed. Finally,considering the synergy between the energy evolution law of coal rock and the energy regulation system,the concept of toughness is introduced to establish a new method of energy regulation and reduction,and combined with case analysis. The results show that:① The stress-strain curve and energy evolution curve of the bearing specimen have significant common characteristics,which have experienced five stages:initial compaction,elastic deformation,plastic deformation,yield failure and late failure. Both water injection pressure relief and drilling pressure relief can significantly affect the mechanical parameters of the samples. Compared with the completely dry samples,the average peak strength of the natural and saturated samples decreased by 28. 7% and 34. 4%,respectively. The average peak strain decreased by 21. 5% and 19. 0%,respectively. Compared with the natural intact sample,the average peak strength of the small aperture and large aperture samples decreased by 13. 1% and 24. 8%,respectively,and the average peak strain decreased by 5. 0% and increased by 226. 1%,respectively. ② The energy system of mining surrounding rock can be regarded as a whole system with load (stress) and structure (strain) as synergistic variables,and its evolution in the mining process follows the law of energy conservation. The instability and catastrophe of deep coal and rock mass is essentially the result of the imbalance of system energy evolution. ③ The stage characteristics of the rock burst disaster process are clarified,and an adaptive energy control strategy is proposed for the energy response differences of different control measures. The ′four-factor′ energy regulation evaluation model and toughness regulation system can effectively realize the controllable transformation of surrounding rock energy,and provide theoretical basis and technical support for the prevention and control project of ductile rock burst. 

Key words: mining coal rock,energy system,co-evolution,toughness control,disaster reduction assessment