歪头山选厂共有38条胶带运输机,最长的有400米,最宽的有1.4米。1979年以前经常发生划皮带事故,特别是碎矿部份,由于产品粒度大(350～0毫米),皮带划破的次数较多。1975年仅一年就划破13次,最长200多米,使用寿命最短为20天。我们从1979年开始,进行了攻关活动,主要采用了以下几种方法,经过多年实践,取得了成效,胶带使用寿命有了显著地提高。 There are a total of 38 tape transporters in Waitou Hill Plant, the longest being 400 meters and the widest being 1.4 meters. Belt accidents occurred frequently before 1979, especially in the crushing part. Due to the large size of the products (350 to 0 mm), the belt was frequently scratched. Only scratched 13 times in 1975 alone, the longest 200 meters, the shortest service life of 20 days. We started in 1979, carried out research activities, the main methods used in the following, after many years of practice, and achieved success, tape life has been significantly improved.