SUNWARD SWDM40 - Environment Protection;Waste Disposal; Overview and Material Storage

SWDM40 OPERATION & MAINTENANCE MANUAL
220
One side of crawlers
not moving/ moving
slowly
Pilot valve failure
Repair
Changing valve and brake valve failure
Contact with supplier
Oil seal for center joint damaged
Replace oil seal
Hydraulic motor failure
Contact with supplier
Travel reduction gearbox failure
Hydraulic oil
temperature too high
or advances too fast
Impurity in radiator surface
Clean
Hyd. Components worn out, low efficiency
Contact with supplier
Overflow valve on/off over frequent
Drill too fast in heavy load, reduces
drill speed
Abnormal sound,
vibration or smell
Daily check and treat it
9.2 ACCIDENTS AND SOLUTIONS DURING DRILLING
Accident
Cause
Treatment
Hole
collapse
Drilling tools collide with sleeves and
protective walls.
Careful management and construction.
Wrong hole boring method.
Choose an appropriate hole boring method.
Sleeves are not embedded into compact
soil.
Compact the soil around the sleeves
Slurry is not suit for soil condition.
Adjust the slurry properties according to
stratum condition.
Hole-deviati
on
The drilling rig is not leveled and Kelly
is not vertical.
Adjust level and vertical
Serious abrasion of driving sleeve.
Repair
Tilting rock surface.
Gentle press and slow drill
Drill bit
being buried
Drilling tools lifting and falling speed is
too fast and produce sucking pressure
and activation pressure.
On one hand, the geographical condition should
be known all –round to avoid accidents. On the
other hand, after the accident happens,
applicable measures shall be taken.
The deposit is very thick, the speed is
too fast so that the tools are stunk.
Slurry is not suitable.