The energy and stress evolution law of surrounding rock in gob side entry driving of adjacent mining faces

Aiming at the phenomenon of excessive distribution and control of anchor ropes and cables in the perimeter rock control of the roadway of 13313 Yingmaiyingyingdong Roadway of Sunjiagou Coal Mine, numerical simulation and on-site measurement and other research methods are used to study the main influencing factors of the instability of the back-mining roadway and to obtain the characteristics of the distribution of energy-stress of the roadway perimeter rock and put forward the roadway perimeter rock zoning control system to optimize the reasonable arrangement of the anchor ropes and cables in the mine. The results of the study show that: 1) The main controlling factors for the deformation and instability of the 13313 return airway are the dynamic pressure excavation of the neighbouring working face and the influence of the concentrated stress on the coal pillar of the No.11 coal seam section above the working face. 2) The main controlling factors for the deformation and instability of the 13313 return airway are the dynamic pressure excavation of the neighbouring working face and the influence of the concentrated stress on the coal pillar of the No.11 coal seam section above the working face. 3) Based on the full-cycle evolution law of the energy-plasticity zone of the tunnel perimeter rock, combined with the numerical simulation results and on-site support conditions, the tunnel perimeter rock zoning control system is proposed to strengthen the support for the concentrated area of the mining influence, so as to avoid excessive wastage of a large number of manpower, material and financial resources.