Due to the high attenuation of radio frequency (RF) signals in underground mines and the statutory power restriction of communication gadgets especially for coal mines, the wireless communication systems have restricted applications in the underground mines. The paper discusses different radio frequency communication techniques being employed for Indian underground mines. Experiments were condu...

Geological suitability evaluation of urban traffic underground space utilisation is an important basic work in planning, especially for soft soil areas. In this study, firstly, on the basis analyzing influencing factors transportation areas, and considering such as topography, geotechnical properties, hydrogeology, existing constructions, index system was constructed. The weights are comprehens...