基于网格划分的全空间块体识别方法及其工程应用

张敏思; 黄润秋; 王述红; 杨勇

doi:10.11779/CJGE201603011

基于网格划分的全空间块体识别方法及其工程应用 English Version

张敏思^{1, 3},
黄润秋²,
王述红^4,,
杨勇^{1, 3}

1. 东华理工大学放射性地质与勘探技术国防重点学科实验室,江西南昌 330013;
2. 成都理工大学地质灾害防治与地质环境保护国家重点实验室,四川成都 610059;
3. 东华理工大学建筑工程学院,江西南昌 330013;
4. 东北大学资源与土木工程学院,辽宁沈阳 110819

基金项目: 国家自然科学基金项目(51474050,51179031); 地质灾害防治与地质环境保护国家重点实验室项目(SKLGP2014K011); 国家高端外国专家项目(GDT20142100008,GDW20142100050); 东华理工大学放射性地质与勘探技术国防重点学科实验室基金项目(RGET1517); 江西省科技支撑计划项目(20151BBG70004)

详细信息

作者简介:
张敏思(1985- ),女,讲师,主要从事岩石力学方面的研究.E-mail: minsizhang@126.com.

通讯作者:
王述红

中图分类号: TU45
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出版历程
- 收稿日期: 2014-12-18
- 发布日期: 2016-03-24

Spatial block identification method based on meshing and its engineering application

1. Fundamental Science on Radioactive Geology and Exploration Technology Laboratory, East China Institute of Technology, Nanchang, 330013, China;
2. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China;
3. Faculty of Civil and Architectural Engineering, East China Institute of Technology, Nanchang 330013, China;
4. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China

摘要

摘要: 为了解决复杂几何边界条件下有限结构面的全空间块体识别问题,提出有向面单元的几何建模概念,并将网格划分思想引入块体理论中.首先利用空间正交网格将岩体离散为若干个小单元块体,然后依次添加结构面,对单元进行接触性判断及切割,最后去除网格合并单元,形成独立的空间块体.针对块体的切割,给出了平面对任意形态块体的切割方法.针对单元块体的合并,提出了以有向边合并为基础的块体合并方法,将同向面,异向面合并方法统一.研究表明该方法具有可动态添加有限结构面,建立复杂几何模型,识别块体的形态数量不受限制,编程简单等优点.结合辽宁某隧道工程实例,利用本研究成果识别出全空间内所有独立块体,并进一步提供围岩周围关键块体的基本信息,证明了其应用于复杂岩石块体识别的有效性和优越性,为确保岩体工程的安全生产提供技术支持.
- 网格划分 /
- 块体识别 /
- 单元 /
- 块体合并 /
- 结构面
Abstract: In order to solve the issue of spatial block identification of finite structural planes under complex geometrical boundaries, the geometric modeling concept of sagittal planes is proposed and the meshing method is introduced to the block theory. Firstly, the rock mass is meshed into small independent elements. Then the structural planes are added orderly and the elements are cut after the contact judgment. Finally, the independent spatial blocks are formed when the mesh is removed and the elements are united. The cutting method of blocks with arbitrary configurations is given by planes. Based on the merger of directional edge, the merging method of the same direction and opposite surface is united aiming at block merging. The results show that it has good advantages for the dynamical appending of structural planes and the building of complex geometry model. Moreover, there is no limit to the form and number of block identification, and the programming progress is simple. The prosposed method is further illustrated with its application to tunnel engineering in Liaoning Province. All of the independent spatial blocks are identified, and then the information of the key blocks is obtained. Its effectiveness and superiority in complex block identification is demonstrated through the engineering practice. It may provide technical support for the safety production of rock mass engineering.
- meshing /
- block identification /
- element /
- block merging /
- structural plane

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参考文献(15)

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