Abstract: The main equipment in openpit mine excavator,rotary drills with the mining location changes,the power supply cable to use mine mobile flexible cable.The cable will be dragged along with the device during use.In order to reduce the damage to the inner core and Outer Sheath of the cable due to its length,weight and friction with the ground and stones during the cable movement,from the technical,management of the two aspects of cable use for maintenance and norms.After standard cable maintenance use,cable joints with vulcanization treatment and other measures cable damage is greatly reduced ,cable service life is improved,and Good reliability of power supply is obtained.

Key words: Open pit mine,Mine mobile cable,Cable maintenance use,Cable vulcanization