介绍了水压预裂爆破的实验研究和爆炸应变场的近区测试结果。采用应变砖作为传感器，用动态分析仪作为分析处理设备。实验对比分析了空气不偶合装药、普通水不偶合装药及预加不同静水压力的水不偶合装药爆破效果。结果表明，水作为不偶合介质能提高爆生气体压缩作用产生的准静态应力场的作用时间，预加一定的静水压力对孔壁初始裂纹的产生起导向作用，从而只在炮孔连线方向产生初始裂纹。炮孔水压预裂爆破能量利用率高，爆破效果好，因此可获得更好的成缝质量和裂面质量。文章还初步分析了水压预裂爆破的成缝机理 The experimental research of water pre-cracking blasting and the near-zone test results of explosion strain field are introduced. Using strain brick as a sensor, with a dynamic analyzer as analysis and processing equipment. Experiments were carried out to analyze the effects of air non-coupled charge, normal water non-coupled charge and pre-applied hydrostatic non-coupled charge. The results show that water as a non-coupling medium can increase the action time of the quasi-static stress field caused by the gas compression of the unburied gas. Pre-adding a certain hydrostatic pressure plays a guiding role in the initiation of the initial crack in the wall, Produce initial crack. Blasting pre-splitting water blasting high energy efficiency, blasting effect is good, so you can get a better quality into cracks and crack quality. The article also preliminary analysis of hydraulic presplitting blasting into the sewing mechanism