389 / 2018-09-12 09:54:17

Analysis of unsafe acts in the development of derailing accidents of inclined shaft trip lifting in coal mine

behavioral safety, accident causation “2-4” model, coal mine, derailing accidents of inclined shaft trip lifting, unsafety acts

矿山安全科学理论与应急救援 > 教育培训与安全行为

In order to reduce unsafe acts in derailing accidents of inclined shaft trip lifting in coal mine, by applying the accident causation “2-4”, the unsafe acts of 55 derailing accidents were studied by statistical analysis and classification. The results showed that derailing accidents resulting in casualties required to satisfy three conditions: vehicles from the mechanical control; failure of the protective facilities; persons in the danger zone. The most critical unsafe acts causing the vehicle to spin out of control including: not stopped lifting work when the rope was found badly worn; Use of non-locking device connecting pin; not the tub plug is inserted in the end; failing to deal with risks of broken wires in wire ropes overrun. The main unsafe acts causing the failure of the protective facilities including: untreated car guards potential failure; upgrade hang without safety lines; not installed protective devices. Accidents caused by casualties’ unsafe acts accounted for 74.55% of the total number of accidents. It includes two types of unsafe acts: take vehicles illegally; wait, walk or work in hazardous locations.