SEASONAL CHANGE OF SIZE AND DIRECTION OF NATURAL DRAFT IN RIKOTI ROAD TUNNEL

СЕЗОННОЕ ИЗМЕНЕНИЕ ВЕЛИЧИНЫ И НАПРАВЛЕНИЯ ЕСТЕСТВЕННОЙ ТЯГИ В РИКОТСКОМ АВТОМОБИЛЬНОМ ТОННЕЛЕ

With the purpose of an establishment of character of parameters change of natural draft in Rikoti road tunnel are carried out experimental supervisions The depression of natural draft caused by the climatic factors is reduced to a difference of pressure at portals. The statistical parameters of natural draft and intensity of movement the automobiles are given. There is judged possible expediency of application of the longitudinal circuit of airing in the given tunnel.