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开阳磷矿矿务局一期工程所开凿的四条溜井均跑矿,其中跑矿最严重的是青菜冲矿的1号溜井。该溜井直径为3米,深200米,底部安装的1050×700毫米的溜矿槽为敞开式的气动扇形闸门,双溜口一次装两个2米~3的矿车。据不完全统计(停产三天内的未计),投产十多年来,较大的跑矿事故有十多次,其中重大设备事故8次,人身伤亡事故4次,停产110天。鉴于上述沉痛的教训,1978年后,
Kaiyang Phosphate Mine Bureau of the first phase of the construction of the four chutes were running mine, of which the most serious run-off mine is the No. 1 Chongkou Green Mine. The runway diameter of 3 meters, 200 meters deep, the bottom of the installation of 1050 × 700 mm slides for the open pneumatic fan gate, double-slip mouth once installed two 2 m ~ 3 car. According to incomplete statistics (discontinued within three days of not counting), put into operation more than 10 years, a large mine accident has more than 10 times, of which 8 major equipment accidents, personal injury and death 4 times, 110 days of discontinued. In view of the painful lesson mentioned above, after 1978,