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断续节理岩体随机模型三维离散元数值模拟
STOCHASTIC MODEL AND NUMERICAL SIMULATION FOR DISCONTINUOUS JOINTED ROCK MASS USING 3D DEM
查看参考文献9篇
文摘
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针对断续节理岩体提出了一种随机计算模型.在该模型中,假设结构面的形状为正方形,通过岩体结构面的统计分布函数模拟结构面的空间随机分布.给出了随机节理模型的实现方法,对该随机模型的算法可靠性进行了验证.通过单向加载模拟试验研究了节理岩体破坏强度与节理倾角及节理连通率等因素的关系,并与极限平衡条件推导的理论结果进行了比较,分析了数值模拟结果与极限平衡理论结果的异同性,进而验证了节理随机计算模型的可靠性.同时,研究了节理连通率与岩体等效弹性模量之间的影响关系,给出了二者的影响关系式. |
其他语种文摘
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A stochastic model for discontinuous jointed rock mass is presented. In the model, according to the statistical distribution function of structural surface, the spatial stochastic distribution of structural surface is simulated on the assumption that the shape of structural surface is square. The implementation approach and algorithmic reliability of the stochastic model are revealed. Through uniaxial compression simulation, the relation between strength of jointed rock mass and its influence factors such as joint obliquity and connection rate is studied under one set of diagonal joints. The computational results are compared with the theoretical value which is deduced through limit equilibrium condition to validate the stochastic joint model, and the similarities and differences between them are analyzed. Also the relationship between equivalent elastic modulus of discontinuous rock mass and connection rate of joint is studied with their influencing relation presented. |
来源
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岩石力学与工程学报
,2004,23(21):3652-3658 【核心库】
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关键词
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岩石力学
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随机模型
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结构面
;
离散元
;
断续节理岩体
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地址
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中国科学院力学研究所, 北京, 100080
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语种
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中文 |
文献类型
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研究性论文 |
ISSN
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1000-6915 |
学科
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数学;建筑科学 |
基金
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国家973计划
;
中国科学院知识创新工程项目
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文献收藏号
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CSCD:1680977
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参考文献 共
9
共1页
|
1.
孙广忠. 岩体结构力学[M].
岩体结构力学,1988
|
被引
299
次
|
|
|
|
2.
Hoek B. The Hoek-Brown failure criteria-a 1998 update[A].
Proceedings of Canadian Rock Mechanics Symposium,1998
|
被引
1
次
|
|
|
|
3.
伍法权. 统计岩体力学原理[M].
统计岩体力学原理,1993
|
被引
50
次
|
|
|
|
4.
陈卫忠. 船闸边坡断续节理岩体强度特性分析.
岩石力学与工程学报,1998,17(5):479-486
|
被引
4
次
|
|
|
|
5.
刘东燕. 含断续节理岩体强度的各向异研究.
岩石力学与工程学报,1998,17(4):366-371
|
被引
18
次
|
|
|
|
6.
李世海. 含节理岩块单轴受压试验三维离散元数值模拟.
岩土力学,2003,24(4):648-652
|
被引
9
次
|
|
|
|
7.
陈伟. 允许变形及断裂的三维离散元计算方法.
岩石力学与工程学报,2004,23(4):545-549
|
被引
3
次
|
|
|
|
8.
王泳嘉. 离散单元法及其在岩土力学中的应用[M].
离散单元法及其在岩土力学中的应用,1991
|
被引
160
次
|
|
|
|
9.
Dowding C H. Distinct element modeling and analysis of mining induced subsidence[J].
Rock Mech. Rock Engng.,1992,25(1):1-24
|
被引
2
次
|
|
|
|
|
|