借助于激波管测定了几种碳氢燃料和空气混合物的爆轰极限、临界起爆能。根据这些实验数据，分析了所研究的碳氢燃料的爆炸危险性。同时根据烷烃和烯烃键的不同饱和度，分析了它们爆炸危险性差别的原因。 The detonation limit of several hydrocarbon fuels and air mixtures was determined by means of shock tube and the critical detonation energy was determined. Based on these experimental data, the explosion risks of the hydrocarbon fuels studied were analyzed. At the same time, according to different saturation degree of alkane and olefin bond, the reason of the difference of explosion risk was analyzed.