熊峻巍;卢文波;唐杰伟;郑祥;陈明;

• 1:武汉大学水资源与水电工程科学国家重点实验室
• 2:武汉大学水工岩石力学教育部重点实验室
• 3:中国水利水电第七工程局有限公司第一分局

摘要(Abstract)：

基于叶巴滩水电站高边坡爆破开挖的工程背景，利用动力有限元分析软件ANSYS/LS-DYNA，建立了爆破滚石-地面碰撞破碎模型，研究了滚石碰撞破碎形态及对后续运动的影响，比较了滚石入射速度、滚石形状和碰撞部位、坡面类型对碰撞破碎的影响，分析了滚石初始裂隙宽度和裂隙产状对碰撞破碎难易程度的影响。数值模拟结果表明：滚石的碰撞破碎使得个别块石具有更大的横向飞散距离，其破碎程度和运动影响范围主要与法向撞击速度、撞击部位和坡面类型有关；滚石初始裂隙的存在使滚石与地面碰撞后更易发生破碎，且一般沿初始裂隙发生剪切破坏。

关键词(KeyWords)： 爆破滚石;碰撞;破碎;裂隙;横向飞散距离;数值模拟

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目（编号：51979205;51779193）

作者(Authors): 熊峻巍;卢文波;唐杰伟;郑祥;陈明;

DOI: 10.14188/j.1671-8844.2023-02-002

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