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FRAMEWORK AND EXPECTATION OF THREE DIMENSIONAL NETWORK STRUCTURAL ROCK MECHANICS
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摘要: 三维网络结构岩体力学是岩体力学的一个分支。根据笔者20余年对裂隙岩体研究的心得，阐述了三维网络结构岩体力学的主要特点、研究对象，基本架构、主要研究内容与未来的展望。将岩体结构控制论归结为材料强度控制、结构类型控制、渗流通道控制和几何边界控制4个方面。技术层面的主要内容包括三维RQD估算、岩体表征单元估算技术、结构块体搜索技术、定向投影岩体结构面三维连通率估算技术以及岩体三维渗径搜索技术等。理论层面主要由球面投影理论、概率统计理论、随机动力学、几何拓扑理论、块体理论、非线性系统理论和裂隙岩体多尺度等效结构模型等构成。强调足量的随机不连续面地质信息的原位统计取样是三维网络结构岩体力学的基础，岩体随机不连续面三维网络数值模拟技术是三维网络结构岩体力学的核心技术。
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关键词:
- 三维网络结构岩体力学 /
- 网络模拟技术 /
- 随机不连续面 /
- 概率统计 /
- 非线性现代算法
Abstract: A framework of three-dimensional network structural rock mechanics has been proposed by author recently. It is a new branch of rock mechanics. Main characteristics of research object,basic framework,main research content and future prospection are explained according to author's research experience on fractured rock mass for more than 20 years. It is concluded that rock mass structure control theory consists of four aspects: material strength control,structure type control,seepage path control and geometric boundary control. The main technical contents include three-dimensional RQD estimation,rock mass representative elements estimation technology,structure block search technology,directional projection rock mass discontinuity three-dimensional connectivity estimation technology and rock mass three-dimensional seepage path search technology. The theory is mainly composed of spherical projection theory,probability and statistics theory,stochastics dynamics,geometric topology theory,block theory,nonlinear system theory and multiscale equivalent structure model of fractured rock mass. A large amount of geological data of discontinuities in the sampling window of rock mass investigation is statistically emphasized as a foundation. Rock mass random discontinuities based three dimensional network numerical modelling technique is the kernel of the three-dimensional network structural rock mechanics.1) * 第五届谷德振讲座特邀报告 -
图 1 岩体结构类型
a. 完整结构体; b. 块状结构体; c. 碎裂块状结构体; d. 碎裂-嵌镶结构体; e. 层状碎裂-散体结构体
Figure 1. Type of rock mass structure
图 3 吉林蛟河核电站备选场址角闪黑云花岗岩体
Figure 3. Rockmass of hornblende biotite granite at the alternative site of Jiaohe nuclear power plant, Jilin Province
图 4 无重介质条件下考虑结构面与否的应力场规律对比
Figure 4. Comparison stress field patterns with or without structural plane under no-gravitational condition
图 9 岩体随机不连续面三维网络模型
Figure 9. Three dimensional network model of random discontinuity in rock mass
图 10 三维网络结构岩体力学基本架构示意图
Figure 10. Schematic diagram of basic framework of three dimensional metwork structural rock mechanics
图 11 受多组结构面控制的堵江滑坡残余滑面特征
Figure 11. Characteristics of residual slip surface of landslide dam controlled by multiple structural planes
图 13 川藏铁路怒江特大桥超高陡复杂斜坡
Figure 13. Super high steep complex slope of Nujiang bridge on Sichuan Tibet Railway
图 14 从完整至强裂隙化岩体的过度(引自Heok et al.(1980))
Figure 14. Transition from intact to strongly fractured rockmass (cite from Heok et al.(1980))
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