<p>This paper based on continuous monitoring underground coal mines parameter such as carbon monoxide, temperature, water level and use wireless Zigbee technology for communication. A microcontroller based system is used for collecting and storing data using ...

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 ...

We present a custom acoustic emission (AE) monitoring system designed to perform long-term measurements on high-alpine rock walls. AE monitoring is a common technique for characterizing damage evolution in solid materials. The system is based on a two-channel ...

<p>In coal mines, whenever explosions occur, the rescue work is done by rescue workers without any prior knowledge of the environmental condition inside coal mine because the mine monitoring systems may be destroyed or damaged. This makes the life of rescue ...

<p>Tunnel accident is apt to become a serious disaster when it occurs. But tunnel construction is being increased rapidly in Korea because tunnel has advantages and usefulness. According to Korean Ministry of Land, Transport and Maritime Affairs, total length ...

This paper describes the potential of wireless sensing networks to improve geotechnical field monitoring and the use of wireless sensors in two on-going geotechnical research projects. Both studies are Network for Earthquake Engineering Simulation Research ...

<p>Early warning systems are becoming one of the main pillars of disaster prevention in natural hazards especially where mitigation strategies are not realizable. Therefore, the call for multi-hazard early warning systems and improvement of monitoring of natural ...

Centrifuge testing requires transmitting data collected in a moving, increased-acceleration environment to a data acquisition system. Typical transmission methods include analog and digital data transmission through slip rings. However, these methods have ...

This paper employs a case history to describe deployment of new TDR cable and communication technologies to monitor stability. It involves remotely monitoring possible sinkhole-induced deformation near a “land bridge” installed over a recent subsidence event. ...