A kind of vertical suspension laying cable for ultra-deep mine and its production process

Abstract

The invention discloses a vertical suspension laying cable for ultra-deep mines and a production process thereof, wherein the cable includes a first section and a second section connected to each other, and the first section is placed vertically in a vertical shaft during laying; the first section The section and the second section include a continuous sheath and a cable core of different structures in the sheath; the cable core includes a continuous insulated core and a two-stage filling layer arranged outside the insulated core; the two-stage The filling layer includes the load-bearing unit arranged in the first section and the polypropylene filling arranged in the second section; the sheath includes an inner sheath, an armor layer and an armor layer arranged outside the cable core in sequence from inside to outside. outer sheath. The cable of the present invention is divided into the first section and the second section, which meet the performance requirements of different sections. The cable is continuously cabled without intermediate joints to avoid potential risks; the first section of the present invention is provided with a load-bearing unit to improve the tensile performance of the cable, and The weight of the cable is reduced, and the safety margin for hoisting and long-term operation of the ultra-deep mine vertical cable laying is improved.

Description

technical field [0001] The invention belongs to the technical field of electric cables, and in particular relates to an ultra-deep shaft and mine suspension laying electric cable and a production process thereof. Background technique [0002] After more than 70 years of mining since the founding of New China, the shallow mineral resources in my country have been reduced and exhausted year by year, and the mining of mineral resources is in the stage of comprehensive advancement to the deep. If the exploration depth of solid minerals in our country reaches 2000 meters, the amount of proven resources can be doubled on the existing basis! According to statistics, in the next 10 years, more than one-third of metal mines in my country will be mined at or above 1,000 meters in depth. [0003] As the depth of ultra-deep wells continues to increase, the requirements for mining cables are also getting higher and higher. According to the national standard of the People's Republic of ...

AI Technical Summary

Problems solved by technology

Existing coal mines with a rated voltage of 8.7 / 10kV and below mostly use cross-linked polyethylene insulated power cables to be laid as a whole in ultra-deep wells, and clamps such as clamps or hoops are installed. If the outer sheath is damaged at the clamping position, if the cable is laid in sections and a transfer cabinet is installed as a joint, it will increase a great potential risk

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