It shows that the network , affected by stream of water , superposes each other leading to the jet of detonator energy cavity and metal fragments which can break the nonel - tube without transmitting detonation yet , so as to make the detonation transmission in some local network break off and bring about misfire 结果表明，受紊乱水流影响，导爆管网络相互叠加，比较凌乱，致使传爆雷管产生的聚能射流和碎片容易将尚未传爆的导爆管切断或打破，而使局部网路爆轰传递中断，造成拒爆现象的发生。
Based on this milti - hierarchical model , application method for information organization of part is presented . chapter 3 proposes a new rule of arbitrary maximum angles of chord for triangulation and locale optimum , which avoides calculating angles of conventional methods in mesh simplification . moreover , with the introduction of arithmetical average windage concept , optimum method for the boundary mesh retriangulations is presented 第三章针对曲面网格简化操作过程中出现的空洞剖分问题，讨论层次模型的网格优化方法，提出了基于弦内角最大准则的局部网格简化方法；针对网格曲面上存在的曲折边界缺陷，提出以边界轮廓算术平均偏差作为边界曲折程度评定参数的边界平滑优化剖分方法。
