帮助 关于我们

返回检索结果

水电能源开发中的关键工程地质体力学问题
Key problem of engineering geomechanics in hydroelectric energy exploitation

查看参考文献59篇

文摘 本文首先讨论了能源开发建设所面临的工程问题和科学问题,简述了工程地质体力学的内涵和应解决的核心问题.特别介绍了笔者研究团队最近几年的研究成果,提出了相关科学问题的研究方向.主要内容包括:传统固体力学中关于点破坏的概念,研究地质体有很大的局限性,论述了用破坏程度描述地质体破坏状态的合理性,以及基于监测与数值模拟相结合的破坏状态概念—破裂度;基于破裂演化原理,讨论了工程地质灾害的两个防灾理念,强调了状态判断的合理性及数值模拟方法的重要性;讨论了地质体稳定性分析方法的评价标准,并对目前常见的几种评价方法做了简要的评述;提出了数值模拟地质体的非连续、非均匀性的两尺度力学模型和计算框架;论述了代表性体积单元尺度上的应变强度分布函数,该函数比本构关系表征材料的破坏特性更为合适;综述了地质体孔隙裂隙渗流及与破裂场耦合模型的计算模型;结合汶川地震次生地质灾害的现象,指出了拟静力计算方法的不合理性,介绍了关于地震作用下地质体边坡稳定性的数值模拟新方法.
其他语种文摘 Engineering and scientific problems confronted in hydroelectric energy exploitation and construction are discussed, and the concept and key problems in engineering geomechanics are introduced. The research work by the team of the authors in recent years is reviewed and research interests in relevant scientific fields are proposed, which includes: (1) The theory of “failure on a point” in traditional solid mechanics is inadequate to describe geological body, and the concept of “fracture degree” is proposed, rationality as well as the operation method with field monitoring and numerical simulation are discussed. (2) Two disaster prevention concepts in geologic hazards based on fracture evolution are introduced, rationality of state evaluation and importance of numerical simulation are emphasized. (3) Evaluation criteria of stability analysis for geological body are discussed and comments are made for some of the common methods. (4) Two scale mechanical model and computational frame for numerical simulation of discontinuum and heterogeneity in geological body are presented. (5) Distributive function of strain strength in representative volume element are expounded, which is more appropriate to describe fracture of material than traditional constitutive relationship and parameters. (6) Seepage model for fractured porous media and fracture coupled model are reviewed. (7) According to secondary geological disaster in Wenchuan, irrationality of pseudo-static method is pointed out, and a new method with numerical simulation for stability analysis of geological body subjected to seismic loads is introduced.
来源 中国科学. 物理学 , 力学, 天文学,2013,43(12):1602-1616 【核心库】
DOI 10.1360/132013-243
关键词 地质体力学 ; 破裂度 ; 应变强度分布 ; 孔隙裂隙渗流 ; 动力时程分析
地址

中国科学院力学研究所, 北京, 100190

语种 中文
文献类型 综述型
ISSN 1674-7275
学科 水利工程
基金 国家973计划
文献收藏号 CSCD:5020986

参考文献 共 59 共3页

1.  李世海. 工程地质力学及其应用中的若干问题. 岩石力学与工程学报,2006,25(6):1125-1140 被引 12    
2.  Duncan J M. State of the art: Limit equilibrium and finite-element analysis of slopes. J Geotech Eng,1996,22(7):577-596 被引 244    
3.  陈祖煜. 边坡稳定三维分析的极限平衡方法. 岩土工程学报,2001,23(5):525-529 被引 84    
4.  张均锋. 边坡稳定性分析的三维极限平衡法及应用. 岩石力学与工程学报,2005,24(3):365-370 被引 33    
5.  孙广忠. 岩体结构力学,1988 被引 299    
6.  孙广忠. 论岩体结构控制论. 工程地质学报,1993,1:14-18 被引 41    
7.  李世海. 论滑坡稳定性分析方法. 岩石力学与工程学报,2009,28:3309-3324 被引 38    
8.  Swenson D V. Modeling mixed-mode dynamic crack propagation using finite elements: Theory and applications. Comput Mech,1988,3:381-397 被引 8    
9.  Goodman R E. A model for the mechanics of jointed rock. J Soil Mech Foundations Division, ASCE,1968,94(3):637-659 被引 225    
10.  侯艳丽. 用3D离散元实现I/II型拉剪混合断裂的模拟. 工程力学,2007,24(3):1-7 被引 12    
11.  常晓林. 模拟岩体失效全过程的连续-非连续变形体离散元方法及应用. 岩石力学与工程学报,2011,30(10):2004-2011 被引 26    
12.  Ke T C. Simulated Testing of Two Dimensional Heterogeneous and Discontinuous Rock Masses Using Discontinuous Deformation Analysis. Dissertation for Doctoral Degree,1993 被引 1    
13.  Owen D R J. The modeling of multi-fracturing solids and particulate media. Int J Numer Methods Eng,2004,60(1):317-339 被引 18    
14.  Munjiza A. The Combined Finite-Discrete Element Method,2004:277-290 被引 5    
15.  Li S H. A spring system equivalent to continuum model. The Fifth International Conference on Discrete Element Methods,2010:75-85 被引 2    
16.  冯春. 基于连续介质力学的块体单元离散弹簧法研究. 岩石力学与工程学报,2010,29(增1):2690-2704 被引 12    
17.  Belytschko T. Elastic crack growth in finite elements with minimal remeshing. Int J Numer Methods Eng,1999,45(5):601-620 被引 359    
18.  Belytschko T. Arbitrary discontinuities in finite element. Int J Numer Methods Eng,2001,50(4):993-1013 被引 53    
19.  Li X K. A micro-macro homogenization approach for discrete particle assembly-Cosserat continuum modeling of granular materials. Int J Solids Struct,2010,47:291-303 被引 5    
20.  Li X K. A bridging scale method for granular materials with discrete particle assembly-Cosserat continuum modeling. Comput Geotech,2011,38:1052-1068 被引 3    
引证文献 5

1 王理想 一种中心型有限体积孔隙-裂隙渗流求解方法及其OpenMP并行化 岩石力学与工程学报,2015,34(5):865-875
被引 5

2 鞠杨 低渗透非均质砂砾岩的三维重构与水压致裂模拟 科学通报,2016,61(1):82-93
被引 15

显示所有5篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护:中国科学院文献情报中心
地址:北京中关村北四环西路33号 邮政编码:100190 联系电话:(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号