文献类型：期刊文献

中文题名：不同聚能爆破模式应力波传播及裂纹扩展规律研究

英文题名：A study on crack propagation and stress wave propagation in different blasting modes of shaped energy blasting

作者：梁洪达[1];郭鹏飞[1,2];孙鼎杰[1];叶铿铿[1];邹宝平[3];袁亚迪[1]

机构：[1]绍兴文理学院土木工程学院,浙江绍兴312000;[2]中国矿业大学深部岩土力学与地下工程国家重点实验室,北京100083;[3]浙江科技学院土木与建筑工程学院,杭州310023

年份：2020

卷号：39

期号：4

起止页码：157

中文期刊名：振动与冲击

外文期刊名：Journal of Vibration and Shock

收录：CSTPCD、、EI(收录号：20201308363487)、北大核心2017、Scopus、CSCD2019_2020、北大核心、CSCD

基金：国家自然科学基金青年科学基金(41602308);深部岩土力学与地下工程国家重点实验室开放基金(SKLGDUEK1821)

语种：中文

中文关键词：聚能拉伸爆破;连孔爆破;间隔爆破;裂纹扩展

外文关键词：concentrated energy stretching blasting;continuous hole blasting;deep hole blasting;crack propagation

中文摘要：为研究双向聚能拉伸爆破应力波传播及裂纹演化规律,采用理论分析、数值模拟等方法,研究单孔爆破、连孔爆破、间隔爆破爆炸应力波的传播形式和裂纹扩展规律。结果表明,连孔聚能爆破和间隔聚能爆破的裂纹扩展长度都在水平径向上达到了900 mm,而单孔聚能爆破仅600 mm,说明连孔聚能爆破时应力波的叠加使切向拉应力增大,聚能方向形成了与孔心连线相平行的裂纹,裂纹开裂延伸,直至贯通。间隔爆破时随着应力波的传播,裂纹尖端张拉应力区也不断向前推移,促使裂纹继续发展,直至贯通。该项研究在岩石成型爆破中提供了有效真实的参考依据,具有广阔的应用前景。

外文摘要：In order to study the propagation of stress wave and crack evolution in biaxial energy accumulation blasting,the propagation form and crack propagation law of stress wave in single hole blasting,continuous hole blasting,and deep hole blasting were studied by theoretical analysis and numerical simulation.The results show that the crack propagation length of continuous hole energy accumulation blasting and deep hole energy accumulation blasting is 900 mm in horizontal radius,while that of single hole energy accumulation blasting is only 600 mm,which indicates that the superposition of stress wave increases the tangential tensile stress,and the energy accumulation direction forms cracks is parallel to the hole center line,and the crack extends until it runs through.With the propagation of stress wave in deep hole blasting crack,the tip tension stress zone is also moving forward,promoting the crack to continue to develop until it runs through.This study provides an effective and real reference for rock forming blasting and has a broad application prospect.