爆破2026，Vol.43Issue(2)：267-277,11.DOI:10.3963/j.issn.1001-487X.2026.02.028
高边坡阻拦网抗冲击性能数值模拟及工程应用
Numerical Simulation and Engineering Application of Impact Resistance Performance of Barrier Nets for High Slopes
摘要
Abstract
Understanding the coupled effects of impact velocity,rockfall dimensions,and impact angle on the per-formance of flexible barrier nets is crucial for optimizing the design of rockfall protection systems during high-slope blasting operations.Employing energy method principles,this study establishes a mechanical model for analyzing rock-fall impacts on protective barrier nets along high slopes,deriving theoretical correlations between maximum impact force and key parameters,including rockfall mass,velocity,and impact angle,expressed as Fmax=v0 cos α √mk.Additional-ly,a numerical model simulating rockfall impacts on barrier nets was developed,with comprehensive simulations per-formed to analyze both isolated single-parameter effects and coupled interactions among rock mass,velocity,and im-pact angle,elucidating their individual and combined influences on barrier net deformation patterns.Results demon-strate that the peak impact force follows a square-root dependence on rockfall mass while maintaining direct linear proportionality to velocity.Increasing vertical impact angles induces outward displacement of impact points,conse-quently diminishing net deformation.The deformation magnitude is linear,whereas higher impact velocities induce material yielding and subsequent stiffness enhancement,thereby decelerating deformation progression.Parameter sen-sitivity analysis reveals the following significance ranking for multi-factor interactions:impact velocity(33.96％),rockfall radius(32.11％),and vertical impact angle(30.91％).Based on these findings,a dual-layer interceptor net system was designed and implemented.Field applications confirm the system's effectiveness in dissipating kinetic en-ergy through the primary net and in successfully intercepting rockfalls by the secondary net,demonstrating superior terrain adaptability and protective capabilities.关键词
高边坡/柔性阻拦网/抗冲击/耦合作用/数值模拟Key words
high slope/flexible barrier net/impact resistance/coupling effect/numerical simulation分类
交通工程引用本文复制引用
任李林,叶小兴,曹庆彬,何理,张亮,钟冬望,赵永明,蔡路军..高边坡阻拦网抗冲击性能数值模拟及工程应用[J].爆破,2026,43(2):267-277,11.基金项目
国家自然科学基金(52274136、51904210) （52274136、51904210）
湖北省自然科学基金项目(2024AFB766) National Natural Science Foundation of China(52274136,51904210),Hubei Provincial Natural Science Foundation Project(2024AFB766) （2024AFB766）
