A New Self-Sensing Fiber Optic Anchor to Monitor Bolt
This article proposes a new self-sensing optical fiber anchor, made by improving the stirrer, to monitor the axial force on the bolt and the loose zone of surrounding rock.
Experimental study of anchor bolt stress evaluation with hybrid optical
A specialized dynamometer with temperature compensation is employed to collect axial force data under step loading conditions. We compare the sensing characteristics of various methods
Utilizing a novel fiber optic technology to capture the axial responses
In this manner, the stresses experienced by the rock mass are transferred to the rock bolt most commonly as an axial load. The proper in situ application of rock bolts is crucial, as improper
A New Self-Sensing Fiber Optic Anchor to Monitor Bolt Axial Force
This paper presents a new self-sensing anchor with embedded optical fibers (made using an improved stirrer) and proposes an intelligent tunnel rock monitoring system.
Sensors | Free Full-Text | A New Self-Sensing Fiber Optic Anchor to
A New Self-Sensing Fiber Optic Anchor to Monitor Bolt Axial Force and Identify Loose Zones in the Surrounding Rock of Open TBM Tunnels. Sensors 2024, 24, 6709.
Experimental study of anchor bolt stress evaluation with hybrid optical
After temperature compensation of the fiber optic sensor for measuring bolt axial force, the loading curve was calibrated. The loading procedure was identical to the temperature calibration,
Bolt axial force monitoring based on fiber grating technology
A novel fiber Bragg grating (FBG) sensor technology is proposed for use in mines, specifically designed to enhance the monitoring of anchor rods.
Experimental study of anchor bolt stress evaluation with hybrid optical
We introduced a novel method for monitoring the axial force of bolts using fiber optic sensing techniques based on FBG and BOTDA. These methods enable the accurate monitoring of
A New Self-Sensing Fiber Optic Anchor to Monitor Bolt Axial Force
Figure 3. Fiber optic encapsulation. - "A New Self-Sensing Fiber Optic Anchor to Monitor Bolt Axial Force and Identify Loose Zones in the Surrounding Rock of Open TBM Tunnels"
(PDF) Strain-Sensing Mechanism and Axial Stress
This study provides an important basis for improving the understanding of a bolt anchoring mechanism and the stability control of a roadway''s
Fiber Bragg Grating Monitoring of Full-bolt Axial Force of
With the increase of mining depth and strength, the evolution of bolt axial force is increasingly becoming important for ensuring the reliability and
Understanding Bolt Fiber Optic Technology: Innovations in
A self-sensing fiber optic anchor is a monitoring device that integrates optical fibers within a bolt to measure axial forces and identify loose zones in surrounding rock in real time.
Bolt axial force monitoring based on fiber grating technology
Abstract Optical fiber sensors are widely used in long-term monitoring in complex environments due to their advantages of anti-electromagnetic interference, high temperature resistance and corrosion
A New Self-Sensing Fiber Optic Anchor to Monitor Bolt
2. Designing the New Self-Sensing Optical Fiber Anchor 2.1. Principle of Self-Sensing Optical Fiber Anchor For stratified rock, the bolt will act as a composite
A New Self-Sensing Fiber Optic Anchor to Monitor Bolt Axial Force
Installing self-sensing anchors in the deep sections of the rock surrounding a tunnel provides three-dimensional, round-the-clock real-time monitoring of the axial forces acting on the anchors, using
A load measuring anchor plate for rock bolt using fiber optic sensor
In this short communication, we propose a smart anchor plate, a simple but effective device that uses fiber Bragg gratings (FBG) type optic sensor, to monitor the load level of the rock bolt.
A New Self-Sensing Fiber Optic Anchor to Monitor Bolt Axial Force
This new self-sensing fiber optic anchor was first applied to an open TBM tunneling project in an inclined shaft in the Kekegai coal mine, and monitoring data indicate that self-sensing
Monitoring bolt load using an fiber optic sensor
The literature reveals diverse applications of fiber optic sensor in bolt tension monitoring, incorporating different fixation methods and demonstrating
A load measuring anchor plate for rock bolt using fiber optic sensor
Therefore, it is very important to monitor the load level of the rock bolts. In this short communication, we propose a smart anchor plate, a simple but effective device that uses fiber Bragg
A New Self-Sensing Fiber Optic Anchor to Monitor Bolt
A tunnel monitoring approach based on distributed fibre optic sensing (DFOS) is presented, which delivers hundreds of strain and temperature sensing points