①. 工作人員(yuan)經常進(jin)入的通(tong)行管溝(gou)應有照(zhao)明設備和(he)良好的通(tong)風。人員(yuan)在管溝(gou)內工作時，空(kong)氣溫度不得超過40℃。

  ②. 通(tong)(tong)(tong)行管(guan)溝應設事(shi)故(gu)人(ren)孔(kong)。設有(you)蒸汽管(guan)道(dao)的通(tong)(tong)(tong)行管(guan)溝，事(shi)故(gu)人(ren)孔(kong)間(jian)(jian)距應不大于(yu)(yu)100m；熱水管(guan)道(dao)的通(tong)(tong)(tong)行管(guan)溝，事(shi)故(gu)人(ren)孔(kong)間(jian)(jian)距應不大于(yu)(yu)400m。

  ③. 整體混凝土結構(gou)的(de)(de)通(tong)行管(guan)溝(gou)，每隔(ge)200m宜設(she)(she)一(yi)個(ge)安(an)(an)裝孔(kong)。安(an)(an)裝孔(kong)寬度應不小于(yu)0.6m且大于(yu)管(guan)溝(gou)內最大一(yi)根管(guan)道的(de)(de)外徑加0.1m，其長度至(zhi)少(shao)應保證6m長的(de)(de)管(guan)子進(jin)入(ru)管(guan)溝(gou)。當(dang)需要考(kao)慮設(she)(she)備進(jin)出時(shi)，安(an)(an)裝孔(kong)寬度還應滿足設(she)(she)備進(jin)出的(de)(de)需要。