Safety Operation Guide for Tunnel Trolley
1. Before moving around, check whether the
template trolley has staff to ensure the safety of the staff.
2. The underwater concrete should be
continuous during concrete grouting, and the underwater concrete branch pipes
should be grouted from top to bottom from the observation ports on both sides.
The concrete is not suitable for long-distance swaying on the surface of the
formwork. The aspect ratio of the concrete on both sides is constant, and the
difference between the aspect ratio of the concrete on both sides should not
exceed 0.6cm to prevent bias.
3. The regulation of grouting time: the
grouting process to the upper end of the side mold should be above 9 hours, and
the time required for all grouting should be about 15 hours on average.
4. During the whole process of the
secondary lining, always check whether all connecting anchor bolts and
supporting extruder screws are loose to prevent mold running.
5. Full-time personnel are required to
check the grouting condition of the vault concrete when it reaches the top, and
immediately stop the irrigation after it is filled to prevent serious
deformation caused by the extrusion of underwater concrete to the formwork.
6. In the actual operation of the
telescopic type, pay attention to the situation of the gantry load-bearing beam
and template at any time and place. If the problem is found, the actual
operation should be terminated immediately, and the actual operation is
prohibited blindly following the trend.
7. When the trolley shuttles, pay attention
to the distance between the trolley formwork and the concrete anytime and
anywhere. If the gap is too small, immediately adjust the horizontal movement
and lift hydraulic cylinders.
8. After installing the oil pump motor and
disassembling the main power plug, pay attention to the conversion of the
gasoline pump. Otherwise, the petrol pump will not be able to pump oil and will
burn the petrol pump in a short time.
9. When the formwork trolley must be
transported, it must be a vehicle with a larger template than the trolley. When
placing the formwork face down, the total number of overlaps cannot exceed five
to avoid deformation. When tying the trolley, the wire must be connected to
each piece. The lifting eyes of the template to prevent dragging.
10. When walking, prevent the ventilation
pipe from being hung with the trolley and damaged. Observers are required to
observe the top and both sides of the trolley to prevent the trolley from being
hooked when it is moving.
11. The Highway Construction Trolley has no brake pedal
equipment. When parking on a slope, a wedge block or stopper should be
installed on the parking position.
12. When the trolley does not need to be
selected for a long time, the bottom title should be on the steel rail, the
side mold ball screw should be well supported, the motor should be protected
from moisture, the switch power supply should be cut off, and the outer surface
of the trolley should be polished and neatly coated with car engine oil. Good
plastic film.
13. The passing space under the gantry
frame of the trolley should be marked with warning signs anytime and anywhere
to prevent all cars from colliding.
14. The switching power supply of lighting
fixtures on the trolley must be 36V switching power supply. Various cables
should be maintained during the whole work process, and the power distribution
cabinet should not be destroyed; if there is damage, it should be handled
properly. During the work, the power supply test button should be used to power
off, and the leakage protection should be replaced immediately if it is found
to be inoperative.
15. When each set of secondary linings are
accurately positioned, all ball screws must be firmly supported in time to
prevent the template from moving or destroying the ball screws when the total
number of ball screws is insufficient.
16. The vault concrete tunnel detector
should be installed as an auxiliary device to cooperate with the manpower to
observe the vault concrete grouting condition.
