矿用软电缆的外护套层一般系采用氯丁橡胶、氯磺化聚乙烯、丁腈/聚氯乙烯、氯化聚乙烯等弹性材料制成。矿用软电缆,尤其是移动电缆和采煤机电缆,在井下因剐、冲击、挤压、炮崩,及经常不断的往复弯曲,电缆的外护套层很易受到损坏。当前常用的修补方法系硫化热补。矿用软电缆的硫化热补需要升井作业。一根中大型电缆的拆卸和更换需用大量工时,影响工作面停产时间较长;修补用的生胶带的有效贮存期又比较短,因此亟需发展电缆井下冷补的新工艺。
We will conti nue t o improve t he compa ny's inter nal control system, and steady improveme nt in a bility to manage and control, optim ize busine ss proce sse s, to e nsur e smooth pr oce sses, responsibilities i n pla ce; to further stre ngthe n inter nal control s, play a control post i nde pe nde nt oversig ht rol e of evaluation complyi ng with t hird-party responsi bility; to a ctively mak