斜井双钩提升系统,往往由于把钩工思想麻痹扳错了道岔,造成下放和提升的矿车(或人车)走向同一股道,引起撞车,这种事故称力重钩事故。我局杨柳坝煤矿+470m 水平下山30°斜井,斜长340m,1.6m 双筒绞车双钩提升,从1974年投产后,曾发生重钩事故20多起。为防止重钩事故的发生,该 Inclined well double hook lifting system, often due to hook workers thought paralysis pull the wrong turnout, resulting in decentralization and upgrading of the car (or people and vehicles) to the same corridor, causing a crash, this accident was heavy lifting accident. Yangliuba Coal Mine of our bureau + 470m horizontal down 30 ° inclined shaft, inclined length 340m, 1.6m double-cylinder winch double hook lift, put into operation since 1974, there have been over 20 heavy accidents. To prevent the occurrence of heavy accidents, the