炮掘巷道内CO浓度超限原因及分布规律研究

Research of CO Transfinite Reason and Concentration Distribution in Blasting Tunnel

在井巷的掘进与开挖过程中,小孔径钻眼爆破方法作为一种经济高效的施工手段,已经得到了非常广泛的应用。但是在井巷掘进爆破时,炸药爆炸生成的气体含有大量的有毒有害成份。由于井巷作业空间相对狭小,通风条件较差,容易造成有毒有害气体浓度超标,对施工人员的身体健康和安全生产构成严重威胁。本文选取真实炮掘巷道为研究对象,采用试验的研究方法对自然通风情况下,巷道内CO的浓度变化规律进行分析,研究结果定量的给出了巷道内不同位置处CO达到标准浓度的时间,为施工人员再次进入到工作面作业提供可靠的时间依据。

In roadway excavation process, the small aperture drilling blasting struction methods, has been very widely used. But in the roadway excavation method as a cost -effective con- 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 construction 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.