目的：探讨大深度饱和潜水不同深度下潜水员作业效率的变化。方法潜水员分别在70、255和493 m 3个深度下完成规定的水下作业内容，通过作业时间和出错次数等指标，衡量作业效率变化。结果与70 m 深度相比，255 m 水下物体绑扎、法兰连接和水下测量所用时间均明显延长，出错次数和水下测量差错次数明显增加（P ＜0．05）；与255 m 深度相比，493 m 水下物体绑扎和法兰连接所用时间延长不明显（P ＞0．05）；水下测量所用时间显著延长（P ＜0．01），法兰连接出错次数和水下测量差错次数明显增加（P ＜0．05）。结论大深度饱和潜水时，潜水员作业能力受到影响，作业效率下降；深度越大，精细作业和与短期记忆相关的作业受到的影响越大。%Objective To explore changes in the capacity and working efficiency of divers performing deep saturation dives at various depths.Methods The divers completed the specified underwater operations at the depths of 70 m,255 m and 493 m,and changes in their working efficiency were assessed by working time and errors occurred during the underwater operations.Results The time consumed for the joining up of flanges,the binding and measurement of underwater objects at the depth of 255 m all significantly prolonged,when compared with the time used at 70 m(P <0.05).The time used for the joining up of flanges,the binding of underwa-ter objects at the depth of 493 m did not prolong significantly,when compared with the time spent at 255 m(P <0.05).However,the time used for underwater measurement prolonged significantly(P <0.01)and the rate of error both in the joining up of flanges and meas-urement of underwater objects increased significantly (P <0.05).Conclusion In deep saturation dives,the capability and working ef-ficiency of divers all considerably reduced.The greater the depths were,the more significantly their operating dexterity and short-term memory were affected.
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