To avoid secondary disaster caused by subsequent
vehicles when a sudden emergency occurs in tunnel, a vehicle safety barrierfree
blocking technology based on the Tyndall effect is proposed. By analyzing the
mechanism of the Tyndall effect, the control parameters of the smoke generator
and laser that form a stable barrier free effect for vehicles with the Tyndall
effect on road sections are studied. The results show the following: (1) The
pressure required for the nozzle of the smoke system increases with increasing
resistance wind speed, and the larger the nozzle deflection angle, the larger
is the required injection pressure. (2) According to the human eye persistence
effect, there is a proportional relationship between the laser scanning speed
that forms the Tyndall effect and the tangent value of the scanning angle. (3)
The thinner the smoke, the more obvious the Tyndall effect and the light screen
blocking information presented, and the farther is the recognition distance.
Based on the tendentious research, it is shown that the light smoke vehicle
blocking technology proposed based on the Tyndall effect has the advantages of
obvious and easy identification of blocking information and acceptance by the
public.
LI Ping
. Safety BarrierFree Blocking Technology of
Vehicles at Tunnel Entrance Based on Tyndall Effect[J]. Tunnel Construction, 2023
, 43(S1)
: 131
-138
.
DOI: 10.3973/j.issn.2096-4498.2023.S1.015
