DEVICE FOR REAL-TIME MONITORING MOVEMENT TRAJECTORY OF MINE ROOF STRATA AND METHOD THEREOF

Coal and gas outburst monitoring device

CONVERGENCE MONITOR

Method for real-time strength estimation, grading, and early warning of rock mass in tunnel boring machine (TBM) tunneling

A FIBER BRAGG GRATING MONITORING DEVICE FOR DYNAMIC DISASTERS IN COAL MINES

Rock bolt assembly comprising a sensor assembly

Safety early warning method and device for full-section tunneling of tunnel featuring dynamic water and weak surrounding rock

System and method for monitoring bearing compression rate of filler in coal mine gob area

Reaming and self-rotating anchor rod and using method thereof

Monitoring and forewarning method for coal-rock dynamic disasters based on electromagnetic radiation and earth sound

Method for rock burst prevention by active support reinforcement and active pressure relief

Full-roadway full-process full-cross-section surface deformation monitoring device and method

Roof support monitoring for longwall system

Rock wall closure detection apparatus

Systems and methods for monitoring longwall mine roof stability

Rock wall closure detection device

Roof support monitoring for longwall system

Locating underground markers

Stress and strain sensing device

Method and apparatus for monitoring gateroad structural change

Structure monitor system

Instrumented rock bolt, data logger and user interface system

Device for real-time monitoring movement trajectory of mine roof strata and method thereof

System for monitoring overlying roof rock and coal pillar of gob-side entry and method thereof

Method for monitoring resilience of shield tunnel based on multi-source heterogeneous data

Integrated manufacturing system and method for small-deformation self-diagnosis shield segment

Determining method for bursting-preventing parameter of roadway support for rock burst in coal mine, and system thereof