Research of CO Transfinite Reason and Concentration Distribution in BlastingT unnel
LI Zhi-qiang
HU Yang
Abstract：In roadway excavation process , the small aperture drilling blasting method as a cost -effective con-struction methods , has been very widely used .But in the roadway excavation blasting , explosives produced gas contains large amounts of toxic and harmful ingredients .Due to the relatively small roadway work space , poor ventilation conditions likely to cause excessive concentration of toxic gases , to produce health and safety of con-struction workers pose a serious threat .This paper , selects real blasting tunnel for the study , experimental re-search methods for natural ventilation , the roadway changes of CO concentration was analyzed quantitatively study results presented at different locations within the roadway CO concentrations up to standard time provide a reliable basis for the construction workers time to face re -entering the job .
Keywords：concentration distributionCO transfiniteexperimental investigations
Publication Date：2014-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：6( 31-36 )