颗粒迁移下岩体单裂隙冲蚀损伤主控因素分析  

Analysis of main controlling factors of single fracture erosion damage of rock mass under particle migration

作　　者：郑茂慧 王东林 和志永 王辉 曹浩浩 张正萌 李思宏 聂鹏飞 ZHENG Maohui;WANG Donglin;HE Zhiyong;WANG Hui;CAO Haohao;ZHANG Zhengmeng;LI Sihong;NIE Pengfei(Inner Mongolia Huangtaolugai Coal Co.,Ltd.,Ordos 017300,China)

机构地区：[1]内蒙古黄陶勒盖煤炭有限责任公司,内蒙古鄂尔多斯017300

出　　处：《有色设备》2024年第6期36-42,共7页Nonferrous Metallurgical Equipment

摘　　要：微裂隙渗流损伤是断层突水优势路径形成过程中的重要影响因素。本文通过构建三维单裂隙渗流模型,探究了不同颗粒粒径、入射速度对单裂隙壁面冲蚀损伤影响规律。结果表明:颗粒入射速度和颗粒粒径与平均冲蚀速率之间均呈现幂函数关系,高速颗粒、大粒径颗粒作用下单裂隙的冲蚀速率增大,且影响大小关系为:颗粒入射速度>颗粒粒径;水力作用和颗粒磨蚀作用下,裂隙损伤较严重时期主要集中在裂隙刚发育阶段。Micro-fracture seepage damage is an important influencing factor in the formation of the dominant path of fault water inrush.In this paper,by constructing a three-dimensional single fracture seepage model,the influence of different particle size and incident velocity on the erosion damage of single fracture wall is explored.The results show that there is a power function relationship between particle incident velocity,particle size and average erosion rate.The erosion rate of single fracture increases under the action of high-speed particles and large-size particles,and the influence size is:particle incident velocity>particle size.Under the action of hydraulic action and particle abrasion,the more serious period of fracture damage is mainly concentrated in the stage of fracture development.

关 键 词：CT三维重建 颗粒迁移 数值模拟 冲蚀损伤 主控因素 

分 类 号：TD12[矿业工程—矿山地质测量]