On September 28th, official website of Henan Coal Mine Safety Supervision Bureau reported the "9.27" accident in Songzao Coal Mine of Chongqing Nengtou Chongqing New Energy Co., Ltd., saying that we should learn from the accident and effectively prevent coal mine accidents.
The Paper noted that the aforementioned circular disclosed the specific cause of the fire accident in Songzao Coal Mine, Chongqing: due to the serious wear of the No.2 underground belt carrying coal with large inclination, after the belt temperature rose, the belt conveyor failed to provide a temperature protection device and a smoke detector, and the belt stopped running without warning, which led to the fire of the belt, and the coal on the belt burned, resulting in toxic and harmful gases flowing back to the working face, resulting in personnel poisoning. In the process of escape, workers found that some compressed oxygen self-rescuers had zero air pressure, which seriously failed.
According to The Paper’s previous report, at 0: 00 on the 27th, 17 people were trapped in Songzao Coal Mine, Chongqing Energy Investment Group, Qijiang District, Chongqing, because the belt burning caused carbon monoxide to exceed the limit. As of the 27th, the search and rescue was completed, among which 16 people had no vital signs, and one person had been sent to hospital for full rescue.
On the 27th, a staff member of Chongqing Qijiang District Emergency Management Bureau told The Paper that the accident was caused by a belt fire on transportation equipment. The staff of the Propaganda Department of the Qijiang District Committee said that the cause of the burning of the belt has yet to be investigated.
According to the aforementioned report of Henan Coal Supervision Bureau, the fire accident in Songzao Coal Mine in Chongqing caused 16 deaths and 38 injuries. The bureau requires that all coal mining enterprises should learn from accidents, strengthen the investigation and management of hidden dangers of belt transportation systems, and thoroughly investigate whether the flame retardant performance of underground belts meets relevant regulations and whether the protective devices installed by belt conveyors are sensitive and reliable. Where there are hidden dangers such as non-compliance of flame retardant performance and incomplete and effective protection devices, the belt conveyor shall be stopped immediately.