Salt-prevention and tensile power cable suitable for saline and alkali place and manufacturing method of salt-prevention and tensile power cable

The invention relates to a salt-prevention and tensile power cable suitable for a saline and alkali place. The cable sequentially comprises insulation wire cores, a filling layer, a cabling wrapping layer, a longitudinal wrapping layer, an internal waterproof layer, an armoring layer, a wrapping tape and an external protection layer from inside to outside. A manufacturing method of the cable comprises the steps of 1) wrapping a water blocking tape among layers of each conductor, and arranging cross-linked polyethylene insulators, used as insulation layers, outside the water blocking layers inan extruded manner so as to form the insulation wire cores; 2) filling a water blocking material in a gap among the insulation wire cores, and wrapping the waterproof blocking material with a waterproof wrapping tape; 3) arranging an aluminum belt and polyethylene plastic, which are pasted as a composite water blocking layer, outside the cabling water blocking wrapping tape in an extruded manner,and arranging galvanized s