FIELD: mining of coal, ore and non-metalliferous fields, construction and maintenance of underground structures. SUBSTANCE: secured to support of underground workings are vibration sensors. Support-enclosing system state is continuously monitored and appearance of vibrations is indicative of hazardous phenomena in enclosing rocks. EFFECT: higher efficiency. 2 cl, 2 dwg
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Authors
Dates
1994-09-15—Published
1992-04-22—Filed