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我公司各矿山在以往凿井过程中,因凿井信号和井盖门、翻矸台控制保护系统不完善,往往出现井下信号部分触电、井盖门伤人、矸石落井等事故。在马庄铁矿主井延深和管子井掘进时,由于凿井信号及井盖门控制系统部分实现了相互闭锁,井盖门自动启闭,从1980年5月施工一年来,主井延深100米,管子井掘进250
In the past, all mines in our company were involved in accidents such as electric shock of underground signal, wounding of manhole cover and falling waste of gangue, etc. due to imperfect control and protection system of shaft sinking signal and well cover door and gangue pile in the former sinking process. When the main shaft of the Zhuanzhuang iron mine was deepened and the tube well was being driven, the shaft was automatically closed and closed due to the partially closed signals of the shaft sinking signal and the cover door control system. Since the construction of the well in May 1980, the main shaft has been extended by 100 meters. Pipe well 250