依托渝利铁路长洪岭隧道近距下穿地表城镇（江池镇）减震爆破施工，通过使用电子毫秒电雷管开展减震爆破试验。试验以爆破震动波的干扰降震原理为指导，结合以往工程使用非电毫秒延期导爆管雷管的减震爆破技术，并进行爆破减震动监测，优化爆破参数，形成了在30m左右近距条件下爆破振速低于1.0cm/s的电子毫秒电雷管全断面减震爆破开挖技术，达到了近距下穿地表城镇时降低隧道爆破振速、确保地表建筑物安全的目的。同时，拓展了在近距条件下隧道钻爆法使用范围，减少了临时支护，提高了施工工效。

Changhongling tunnel on ChongqingLichuan railway crosses underneath Jiangchi town. In the construction of the towncrossing section of the tunnel, vibrationminimizing blasting tests are performed by using electronic detonators. The mentioned tests are carried out under the guidance of interference vibrationminimizing theory. The vibrationminimizing blasting is monitored, and the blasting parameters are optimized. Fullface vibrationminimizing blasting technology with electronic detonators, which achieves less than 1.0cm/s blasting vibration velocity under the condition of about 30m distance, is established. In the end, the blasting vibration velocity is reduced, the safety of the surface buildings is guaranteed, the primary support of the tunnel is reduced and the construction efficiency is improved.