VENTILATION SYSTEM WITH NOISE SILENCER OF UNDERGROUND STRUCTURE

摘要

FIELD: mining. ^ SUBSTANCE: system includes pit shaft with air-sound channels, ventilation and noise silencer chambers and ventilation stall. Stall is attached to pit shaft by means of the pipeline piece built in the building located above the underground structure. Between ventilation and noise silencer chambers there installed is elastic diaphragm with an opening. ^ EFFECT: reducing noise level by means of multi-staged silencing. ^ 1 dwg