详细介绍了传输射孔负压多级起爆 (TCP)技术在地质、工程方面的优势 ,介绍了该项技术的主要特点及应用实例。负压多级压力起爆需要由开孔装置、点火装置、延时装置、减震系统、压力转换装置、P -T卡瓦式可回收封隔器等部分组成 ,负压开孔装置是整个技术的核心部分 ,起到延迟起爆器受压启动之后继续接受环空压力、完成剪断剪切销及活塞上行等工作。剪切销剪切值的选择及延迟起爆管的延时精确性都是该项技术应用成功与否的关键 Described in detail the transmission perforating negative pressure multi-stage detonation (TCP) technology in geological and engineering advantages, introduced the main features of the technology and application examples. Negative pressure multi-stage pressure detonation need to open-hole devices, ignition devices, delay devices, damping systems, pressure conversion devices, P-T Kava retractable packer and other components, vacuum opening device is the entire technology Of the core part, played to delay the detonator pressure start to continue to accept the annulus pressure, complete cutting shear pin and piston up work. The choice of shear pin shear and delay detonation tube delay accuracy are the key to the success of the technology application