A new method for visualizing stresses in rock support measures by using a light emitting sensor

摘要

Light Emitting Deformation Sensor is applied for ground anchors and rock bolts. By adding additional elements to original ground anchors and rock bolts, the new types are capable of showing current axial force in them by color of LED that changes according to magnitude of the force. Real time measurement of these forces and simultaneous presentation on site, leads to safer working environment since any symptom for larger deformation can be grasped with no time delay. In addition, simple axial force presentation by changing color of LED might help upgrade the management efficiency of those rock support measures and grasp axial force distribution in underground structures as a whole.