井下爆破过程CO气体生成规律研究

Study on CO Generation Laws in Underground Blasting Process

新疆地区急倾斜煤层特殊的赋存特点决定了井下工作面回采前需要采用爆破方式对煤体进行超前预裂与松动。但煤矿许用炸药爆炸过程中会产生大量的有毒有害气体,如CO、NO和NO2等,这些气体不仅会伤害井下作业人员的身体健康,还严重干扰了矿井煤自然发火早期预测预报的准确度。为此,在典型急倾斜综放工作面采用气体浓度分析法研究超前预裂爆破后回风流中有害气体的生成规律,得到了单位质量三级煤矿许用乳化炸药完全爆炸后CO生成绝对量。

The special occurrence characteristics of steeply coal seam in Xinjiang region determine that underground mining face needs to adopt blasting to carry out pre-crack and loose before working face mining.But permissible explosive process of coal mine will produce large amounts of toxic gases,such as CO,NO and NO2,these gases will not only harm the health of mine workers,but also seriously disturbed the early prediction accuracy degree of coal mine spontaneous combustion.To this end,in a typical steeply inclined fully mechanized caving face,using a gas concentration analysis,we study the harmful gas generating law in return current after advanced blasting and pre-splitting,and get the generated absolute amount of CO of unit mass three-level mine-used permitted emulsion explosives after the complete explosion.