二矿区610m破碎站左侧碉段应力-结构性破坏研究  

Stress-structural Failure Study of the Left Side Adit Section of the 610m Crushing Station in the Second Mining Area

作　　者：郭赟林 夏胜衍 杨清伟 Guo Yun-lin;Xia Sheng-yan;Yang Qing-wei

机构地区：[1]金川集团镍钴有限公司二矿区

出　　处：《金川科技》2024年第3期8-14,共7页Jinchuan Science and Technology

摘　　要：针对610m破碎站左侧碉段开挖后可能诱发的应力-结构性破坏问题,采用无人机采集掌子面地质条件与岩体产状,并从中提取了岩体的结构面(组)产状和间距等重要几何信息,应用显示离散元数值模拟软件(3DEC)构建610m破碎站左侧碉段三维岩体结构与数值仿真模型。研究结果表明,610m破碎站其应力-结构性破坏的诱因是破碎站开挖卸荷导致JSet#2与JSet#3节理组与开挖面最易形成不利块体。建议从表层、浅层和深层控制三个层次上系统地控制破碎站开挖卸荷后的应力-结构性破坏,研究成果可为金川二矿区深部开采提供理论指导和技术支撑。In response to the stress structural failure problem that may be induced after excavation of the left section of the 610m crushing station,unmanned aerial vehicles were used to collect geological conditions and rock mass attitudes of the face,and important geometric information such as the attitude and spacing of the structural planes(groups)of the rock mass were extracted from them.The 3D discrete element numerical simulation software(3DEC)was used to construct a three-dimensional rock mass structure and numerical simulation model of the left section of the 610m crushing station.The research results indicate that the stress structural failure of the 610m crushing station is caused by the unloading of the crushing station excavation,which leads to the formation of unfavorable blocks in the JSet#2 and JSet#3 joint sets and excavation faces.It is suggested to systematically control the stress structural failure of the crushing station after excavation and unloading at three levels:surface,shallow,and deep.The research results can provide theoretical guidance and technical support for deep mining in Jinchuan Second Mining Area.

关 键 词：深部开采 应力-结构性破坏 三维重构 数值模拟 

分 类 号：TU4[建筑科学—土工工程]