大型复杂露天矿边坡三维建模方法及加固对策研究

TD353; 针对内蒙古长山壕露天金矿西南采场发生大规模倾倒失稳变形现状,本研究对西南采场工程地质条件、岩体结构类型以及变形破坏特征进行系统调查,详细介绍3DMine-FLAC3D大型复杂地质体高精度耦合建模方法及建模过程.在此基础上提出以恒阻大变形锚索为核心的边坡加固方案,并采用数值模拟方法与原支护方案进行对比研究.研究结果表明,西南采场地质结构复杂,断层节理发育,倾倒区岩体以抗弯强度较低的板岩、片岩为主,且支护结构采用小变形锚索,无法抵抗边坡大变形而导致倾倒失稳的发生;3DMine-FLAC3D耦合建模方法实现了复杂地质体的精确建模;采用恒阻大变形锚索加固方案能有效控制边坡失稳变形,取得较...

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Published in矿业科学学报 Vol. 6; no. 4; pp. 397 - 408
Main Authors 陶志刚, 任树林, 庞仕辉, 徐浩田, 何满潮
Format Journal Article
LanguageChinese
Published 深部岩土力学与地下工程国家重点实验室,北京 100083%中国矿业大学(北京)力学与建筑工程学院,北京 100083 01.08.2021
Subjects
耦合建模
变形机制
恒阻大变形锚索
倾倒变形
边坡工程
Online AccessGet full text
ISSN2096-2193
DOI10.19606/j.cnki.jmst.2021.04.004

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Abstract TD353; 针对内蒙古长山壕露天金矿西南采场发生大规模倾倒失稳变形现状,本研究对西南采场工程地质条件、岩体结构类型以及变形破坏特征进行系统调查,详细介绍3DMine-FLAC3D大型复杂地质体高精度耦合建模方法及建模过程.在此基础上提出以恒阻大变形锚索为核心的边坡加固方案,并采用数值模拟方法与原支护方案进行对比研究.研究结果表明,西南采场地质结构复杂,断层节理发育,倾倒区岩体以抗弯强度较低的板岩、片岩为主,且支护结构采用小变形锚索,无法抵抗边坡大变形而导致倾倒失稳的发生;3DMine-FLAC3D耦合建模方法实现了复杂地质体的精确建模;采用恒阻大变形锚索加固方案能有效控制边坡失稳变形,取得较好的支护效果.
AbstractList TD353; 针对内蒙古长山壕露天金矿西南采场发生大规模倾倒失稳变形现状,本研究对西南采场工程地质条件、岩体结构类型以及变形破坏特征进行系统调查,详细介绍3DMine-FLAC3D大型复杂地质体高精度耦合建模方法及建模过程.在此基础上提出以恒阻大变形锚索为核心的边坡加固方案,并采用数值模拟方法与原支护方案进行对比研究.研究结果表明,西南采场地质结构复杂,断层节理发育,倾倒区岩体以抗弯强度较低的板岩、片岩为主,且支护结构采用小变形锚索,无法抵抗边坡大变形而导致倾倒失稳的发生;3DMine-FLAC3D耦合建模方法实现了复杂地质体的精确建模;采用恒阻大变形锚索加固方案能有效控制边坡失稳变形,取得较好的支护效果.
Author 陶志刚
徐浩田
任树林
何满潮
庞仕辉
AuthorAffiliation 深部岩土力学与地下工程国家重点实验室,北京 100083%中国矿业大学(北京)力学与建筑工程学院,北京 100083
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Author_FL Tao Zhigang
Xu Haotian
He Manchao
Pang Shihui
Ren Shulin
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变形机制
恒阻大变形锚索
倾倒变形
边坡工程
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Title 大型复杂露天矿边坡三维建模方法及加固对策研究
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