Related Experiment Video
Updated: May 13, 2026

In Situ Soil Moisture Sensors in Undisturbed Soils
Published on: November 18, 2022
Design and application of a field sensing system for ground anchors in slopes
Se Woon Choi1, Jihoon Lee, Jong Moon Kim
1Department of Architectural Engineering, Yonsei University, Seoul 120-749, Korea. watercloud@yonsei.ac.kr
Abstract:
In a ground anchor system, cables or tendons connected to a bearing plate are used for stabilization of slopes. Then, the stability of a slope is dependent on maintaining the tension levels in the cables. So far, no research on a strain-based field sensing system for ground anchors has been reported. Therefore, in this study, a practical monitoring system for long-term sensing of tension levels in tendons for anchor-reinforced slopes is proposed. The system for anchor-reinforced slopes is composed of: (1) load cells based on vibrating wire strain gauges (VWSGs), (2) wireless sensor nodes which receive and process the signals from load cells and then transmit the result to a master node through local area communication, (3) master nodes which transmit the data sent from sensor nodes to the server through mobile communication, and (4) a server located at the base station. The system was applied to field sensing of ground anchors in the 62 m-long and 26 m-high slope at the side of the highway. Based on the long-term monitoring, the safety of the anchor-reinforced slope can be secured by the timely applications of re-tensioning processes in tendons.
Related Concept Videos
Design Example: Maintaining Level of an Embankment
Field Procedure for Staking Out Curves
Design Example: Identifying the Locations of Monuments in the Field Using Global Positioning System Device
Field Application of Global Positioning System
Design Example: Marking Boundaries of a Site Using a Compass
Taping Over Different Ground Profiles

