预裂爆破是一种控制爆破法,这种爆破法是沿预裂面(即设计轮廓线)钻一排较为密集的炮孔,在这些炮孔或部分炮孔内进行少量装药,并均匀分配药量,在主爆破未爆前先行起爆,便沿预裂面产生一条相当于炮孔深度的裂缝,而后再进行中心部分的主爆破。预裂爆破的原理是:当两个炮孔同时起爆时,应力波在炮孔之间相互作用,使炮孔间的岩石承受拉应力而造成破裂,于是在炮孔间形成断裂区。如果炮孔间距和装药量合 Presplit blasting is a controlled blasting method that drills a series of denser blast holes along the pre-split face (ie, the design contour line), and charges a small amount of charges in these blast holes or part of the blast holes, and evenly. The dose is dispensed and the detonation is carried out before the main blasting has occurred. A crack corresponding to the depth of the blasthole is then created along the pre-split surface before the main blasting of the center section takes place. The principle of presplit blasting is that when two blastholes detonate at the same time, the stress wave interacts between the blastholes so that the rock between the blastholes is subjected to tensile stress and causes rupture, thus forming a fracture zone between the blastholes. If the hole spacing and charge amount