An area of major concern in considering increased coal production and utilization is the health and safety of increased numbers of workers who mine, process, or utilize coal. Hazards related to mining activities in the past have been especially serious, resulting in many mine related accidental deaths, disabling injuries, and disability and death from chronic lung disease. Underground coal mine...

ZigBee technology is a kind of self organization of short distance, strong anti-interference, low cost, emerging wireless sensor network application that has attracted wide attention. Therefore, this paper studies and designs a real-time positioning system of underground personnel based on ZigBee system, the positioning of the sensor carrying miners through the wireless sensor network. This wil...

Flooded mine workings have good potential as low-enthalpy geothermal resources, which could be used for heating and cooling purposes, thus making use of the mines long after mining activity itself ceases. It would be useful to estimate the scale of the geothermal potential represented by abandoned and flooded underground mines in Europe. From a few practical considerations, a procedure has been...

This paper presents a review of Ultra Wide Band (UWB) communication system and its application for the indoor environment, in general, and in underground mine environment. It shows that, to improve the UWB system performance many researcher proposed the modification in transmitting and receiving schemes of UWB system. Literature survey given in this paper, gives brief idea on the techniques whi...

RF channel measurements in underground mines have important applications in the field of mobile communications for improving operational efficiency and worker safety. This paper presents an experimental study of the ultra wideband (UWB) radio channel, based on extensive sounding campaigns covering the underground mine environment. Measurements were carried out in the frequency band of 2–5 GHz. ...

Studies show that soldiers’ mine detection capabilities with the PSS-12 hand-held metal detector are substandard and that their probabilities of detecting (PD) low-metal mines are dangerously low. Highly experienced PSS-12 operators, however, achieve PDs over 0.90 on highand low-metal anti-tank (AT) and anti-personnel (AP) mines. Significantly, experts’ detection techniques differ from conventi...

Based on wireless multimedia sensor networks (WMSNs) deployed in an underground coal mine, a miner's lamp video collaborative localization algorithm was proposed to locate miners in the scene of insufficient illumination and bifurcated structures of underground tunnels. In bifurcation area, several camera nodes are deployed along the longitudinal direction of tunnels, forming a collaborative cl...

With the fast development and utilization of underground space resource in cities, the spatial distribution of urban underground pipelines becomes more and more complex. How to efficiently utilize the latest technology, realize underground space resources' management, visualization, layout optimization and mine applications, are challenging issues in current digital city development. Taking int...

Federal regulations require that refuge alternatives (RAs) be located within 305 m (1,000 ft) of the working face and spaced at one-hour travel distances in the outby area in underground coal mines, in the event that miners cannot escape during a disaster. The Mine Safety and Health Administration mandates that RAs provide safe shelter and livable conditions for a minimum of 96 hours while main...