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1982年7月23日×水厂工人马××进入已停用报废18个月的深井泵房,因接触废井气体而昏倒,为抢救中毒者,23人相继进入泵房,造成4人死亡,20人中毒的严重事故。 现场情况: 水井位于城市北郊,周围无工业污染源。泵房系地面上3m、地面下6m、直径4m平顶圆形建筑,由旋梯通至房底。有门窗但长期封闭。房底部水泥平台上有4k6离心泵一台、直径30cm圆形泵管孔两个。平台下为深8.4m、直径4m圆形水井,井底由管径不等的87.4m井管相接。事故18个月前因水位下降而停用报废。事故发生时水位低于井底,故没能取得水样。事故4小时后取距泵房底2.5m水井内气体(抢救时泵房曾充氧100m~3)定性试验结果:硫化氢、二氧化碳、
July 23, 1982 × The waterworks worker Ma ×× entered the decommissioned deep-well pump house for 18 months and collapsed due to contact with the gas from the waste well. In order to rescue the poisoned persons, 23 people successively entered the pump room, resulting in 4 deaths , 20 serious poisoning accident. Site conditions: wells located in the northern suburbs of the city, no industrial pollution sources around. Pumping room on the ground 3m, 6m under the ground, a diameter of 4m flat top circular building, connected by the ladder to the ground floor. There are doors and windows but long-term closed. There is a 4k6 centrifugal pump on the cement platform at the bottom of the room and two circular pump pipe holes with a diameter of 30cm. Under the platform is a deep water hole of 8.4m in diameter and 4m in diameter. The bottom of the well is connected by 87.4m well pipes of different diameters. 18 months ago due to the decline in water level and scrapped. When the accident occurred, the water level was lower than the bottom of the well, so it failed to obtain the water sample. 4 hours after the accident from the pump house 2.5m well gas (rescue pump room had oxygen 100m ~ 3) qualitative test results: hydrogen sulfide, carbon dioxide,