This article concerns model tests of longwall shearer with string feed system. The introduction outlined the problem exploitation thin seams, in particular hard coal and briefly described construction operation technology a single-unit system for their exploitation. modeling machines such was presented, as well author’s physical mathematical unitary shearer. Then, assumed parameters, were carri...

Based on both theoretical and practical experiences, the measures aimed at controlling emergency shutdowns of stopes have been highlighted. These are connected with rigid settlements powered complexes. In terms Western Donbas mines, there certain risks a shutdown stopping operations within zone primary roof caving. Thus, causes support may include following: layers main rocks hanging not timely...

Received signal strength-based positioning and tracking of humans is a reliable solution for harsh indoor environments like the longwall tunnels at underground coal mining sites. The mining personnel with radio tags on their body can be tracked along a line of sensing reference nodes. The wired bus backbone for the transmission of all sensor data to a central processing station is the limiting ...