定向水耦合破岩聚能装药结构优化设计及数值模拟

Optimal Design and Numerical Simulation of Structure Optimization of Directional Water Coupled Rock-Breaking Polygonal Charge

本研究针对定向破岩聚能装药,通过对固定装药半径下随着锥顶角和锥顶距变化下,有效装药率的变化趋势进行计算,开展了双向聚能装药结构参数的优化设计。并通过ALE算法对不同耦合填充的PVC聚能装药柱进行研究,分析聚能与非聚能方向的裂纹成型规律以及孔壁所受有效应力峰值,得到结论:在水耦合介质的作用下,非聚能方向的炮孔壁所受有效峰值应力更小,起到了更好的定向断裂控制效果。In this study, the optimized design of bi-directional polyenergy charge structure parameters was carried out for directional rock breaking polyenergy charge by calculating the trend of effective charge rate under the change of cone top angle and cone top distance with fixed charge radius. And through the ALE algorithm to study the PVC polyenergy charge column with different coupling filling, analyze the crack formation law and the effective peak stress on the hole wall in the polyenergy and non-polyenergy directions, and get the conclusion: under the action of water coupling medium, the effective peak stress on the gun hole wall in the non-polyenergy direction is smaller, which plays a better effect of directional fracture control.