1.School of Environment and Chemical Engineering,Heilongjiang University of Science and Technology,Harbin ,China;2.School of Mining Engineering,Heilongjiang University of Science and Technology,Harbin ,China

为了提高泡沫隔爆装置的抑爆性能,提出了向泡沫金属板中填充干粉抑爆剂来增强泡沫金属板的隔爆效果。试验以自行研制的"瓦斯-煤尘爆炸系统"为试验基础,采用15 ppi、0.3 g/cm~3、铁∶镍=9∶1泡沫铁镍金属板为填充骨架,以ABC和BC超细干粉为填充材料。通过正交试验,寻求向泡沫金属板中填充的最佳抑爆材料和填充比例。试验结果表明:泡沫金属板中填充干粉抑爆剂具有良好的抑爆效果,15 ppi、0.3 g/cm~3、铁∶镍=9∶1泡沫铁镍金属板最佳填充比例为35%,抑爆效果最佳的填充体是ABC∶BC=1∶1的混合干粉抑爆剂,能使爆炸产生的压强由0.342 MPa降低至0.098 MPa,衰减率为71.3%,火焰速度由522 m/s降低至114 m/s,降低率达到78.1%,爆炸产生的强度明显减小。

In order to improve the explosion suppression performance of foam blocks blasting device,the foam metal plates are filled with the powder suppressant to enhance foam sheet metal block blasting effect.The experiment is based on the gas-coal dust explosion system which is self-developed,and the best filling rate of 15 ppi,0.3 g/cm3,iron/nickel is 9∶1 foam iron nickel metal plate is the filling skeleton,and there are four suppressant powder as filling material which are ABC and BC powder.The optimal suppression and filling ratio of the foam metal plate is sought through the orthogonal experiment.The experiment results show that the foam metal plate filled with the suppressant has good suppression effect.The best filling rate of 15 ppi,0.3 g/cm3,iron∶nickel is 9∶1 foam metal plate is 35%.the filling body of the best explosion suppression effect is ABC∶BC=1∶1 mixture superfine powder,which can reduce the blast pressure from 0.342 MPa to 0.098 MPa,the rate of reduction is 71.3% and the flame speed reduce from 522 m/s to 114 m/s,the rate of reduction is 78.1%.The intensity of the explosion is significantly reduced.

国家自然科学基金资助项目(51504086；51604101)；黑龙江科技学院青年才俊培养计划资助项目(Q20120201)；