Research on the Control and Remote Monitoring Technology of Pressure Relief Through Cutting Joints in the Roof of Goaf Retaining Roadway Supported by Gangue
In order to solve the problem of controlling the surrounding rock along gob-side entry retaining in deep high stress roadway coal mines,FLAC3D numerical simulation software was used to simulate 3 coal in a mine by applying roof slit con-trol technology of gob-side entry retaining by bearing gangue.The results show that when the control effect of the roof rock layer is better,the slit height is 1400 mm,and the difficulty of cutting is not high.The optimal width for bagged gangue walls is 2000 mm,and this width material and working time are reasonable.Moreover,it is proposed that combining modern sensor technology,data transmission technology,data analysis and processing technology and automatic control technology,the remote monitoring technology of the deformation of surrounding rock along gob-side entry retaining in deep high stress roadway can be realized,real-time monitor the deformation of surrounding rock of roadway,accurate grasp of its stability,early warn of critical safety status,and provide a strong guarantee for the stability of surrounding rock of roadway.