A study on blasting response of rock mass considering in-situ stress and joint inclination

IF 3.5 2区计算机科学 Q2 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS

Simulation Modelling Practice and Theory Pub Date : 2025-05-16 DOI:10.1016/j.simpat.2025.103144

Qianxi Gao , Zhiliang Wang , Yu Ni , Jianguo Wang

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引用次数: 0

Abstract

This paper investigates the influence of in-situ stress on the damage and vibration of jointed rock mass by double-hole blasting. Firstly, the hoop stress distribution around the blasthole under static load was explored. Then, six rock mass models with joint inclinations of 15°, 30°, 45°, 60°, 75°, and 90° were respectively established in the middle of the two blastholes. Finally, the blasting-induced damage and attenuation behavior of peak particle velocity (PPV) under different in-situ stress conditions were numerically simulated. The results indicate that under hydrostatic pressure, the proportion of crushed elements and the length of main cracks are negatively correlated with the magnitude of in-situ stress. The PPV initially increases and subsequently decreases as the in-situ stress rises. Under the action of non-hydrostatic pressure, when the vertical in-situ stress is constant, the proportion of the crushed elements and the length of the main cracks in the vertical direction decrease with the increase of the horizontal in-situ stress. When the horizontal in-situ stress increases and the joint inclination is between 0° and 75°, the PPV in the horizontal direction first increases and then decreases. When the joint inclination is 90°, the PPV in the horizontal direction consistently increases with the increase of the horizontal in-situ stress. These results can provide reference for the estimation of rock fragmentation in blasting operations.

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考虑地应力和节理倾角的岩体爆破响应研究

本文研究了地应力对双孔爆破节理岩体损伤和振动的影响。首先，对静载荷作用下炮眼周围的环向应力分布进行了研究。然后在两个炮眼中部分别建立了节理倾角为15°、30°、45°、60°、75°和90°的6个岩体模型。最后，对不同地应力条件下的爆破损伤及峰值颗粒速度（PPV）衰减规律进行了数值模拟。结果表明：静水压力作用下，破碎单元比例和主裂缝长度与地应力大小呈负相关；随着地应力的增大，PPV先增大后减小。在非静水压力作用下，竖向地应力一定时，随着水平地应力的增大，竖向破碎单元占比和主裂缝长度减小。水平地应力增大，节理倾角在0°~ 75°范围内，水平方向PPV先增大后减小；当节理倾角为90°时，水平方向的PPV随水平地应力的增大而持续增大。这些结果可为爆破作业中岩石破碎度的估计提供参考。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Simulation Modelling Practice and Theory 工程技术-计算机：跨学科应用

CiteScore

9.80

自引率

4.80%

发文量

142

审稿时长

21 days

期刊介绍： The journal Simulation Modelling Practice and Theory provides a forum for original, high-quality papers dealing with any aspect of systems simulation and modelling. The journal aims at being a reference and a powerful tool to all those professionally active and/or interested in the methods and applications of simulation. Submitted papers will be peer reviewed and must significantly contribute to modelling and simulation in general or use modelling and simulation in application areas. Paper submission is solicited on: • theoretical aspects of modelling and simulation including formal modelling, model-checking, random number generators, sensitivity analysis, variance reduction techniques, experimental design, meta-modelling, methods and algorithms for validation and verification, selection and comparison procedures etc.; • methodology and application of modelling and simulation in any area, including computer systems, networks, real-time and embedded systems, mobile and intelligent agents, manufacturing and transportation systems, management, engineering, biomedical engineering, economics, ecology and environment, education, transaction handling, etc.; • simulation languages and environments including those, specific to distributed computing, grid computing, high performance computers or computer networks, etc.; • distributed and real-time simulation, simulation interoperability; • tools for high performance computing simulation, including dedicated architectures and parallel computing.