反复高气压作业残余氮当量时间计算

Calculation of Equivalent Time of Residual Nitrogen for Repetitive Compressed Air Work

本文根据Haldane理论和Fick定律,对确定隧道反复高气压作业减压方案,所需的残余氮当量时间△t参数计算方法及其数学关系式推导等进行了研究。△t值理论计算后,通过实验室人体模拟实验及上海市延安东路越江隧道反复高气压作业减压的应用验证,结果均无减压病(DCS)、减压性骨坏死(DON)及肺囊肿(LC)发生。

In this paper the authors studied the method of calculating parameters of equivalent time △t of residual nitrogen required for establishing decompression schedules in repetitive compressed air work in tunnel and the derivation of mathematic equations based on Haldane's theory and Fick's law. The calculated values were verified both in simulated experiments on human bodies and in decompression practice in repetitive compressed air work during the construction of Yan An Dong Lu subaqueous tunnel across Huang Pu River in Shanghai and no decompression sickness (DCS), dysbaric osteonecrosis (DON), or lung cyst (LC) was found.