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在炸药爆破作用下不易塑性变形的脆硬岩石中应用棱柱形掏槽效率最高。在国外许多采矿企业中进行了确定棱柱形掏槽合理参数的实验和理论研究。在白云石化的石灰岩层中进行了各种结构的棱柱形掏槽的研究。破碎岩石所消耗的能量按破碎岩石体积和爆破后形成的掏槽孔大小或掏槽眼和崩落眼间的破碎带大小来确定。确定，崩落眼直径对爆破结果的影响
Prismatic undercutting is the most efficient method in brittle and hard rock that is not easily plastic deformation under explosive blasting. Experiments and theoretical studies have been carried out in many foreign mining enterprises to determine the reasonable parameters of prismatic cutting. In the dolomitized limestone layer of various structures of the prism undercut research. The energy consumed by broken rocks is determined by the size of the broken rock and the size of the cut hole formed after the blasting or the size of the broken zone between the cut eye and the caving eye. Determine the impact of the diameter of the caving eye on the blasting result