DEVICE FOR SIGNALING OF BEGINNING OF SHIFT OF ROCK MASSIF

摘要

Device for signaling on beginning of shift of rock massif includes electric fixation device for displacement arranged as system of one-wire leads placed in well, filled with concrete that forms cement column and connected each to contact plate installed in conductor with external threading placed in mouth of well. On conductor signaling block is installed. Electric fixing device is provided to end clips and is placed in horizontal trench-slot provided in the upper part of shift-dangerous hillside.