节点文献
基于块体理论的岩体隧道三维程序研制及其应用
3D Rock Tunnel Software Development and Its Application Based on Key Block Theory
【作者】 张亚兵;
【作者基本信息】 东北大学 , 岩土工程, 2008, 硕士
【摘要】 作为基础设施建设重要组成部分的岩体隧道工程,近年来在我国无论数量还是质量上都有了长足的进展。其中有相当数量的隧道工程建设在山区,隧道岩体作为非均匀介质,其力学性质与土体等其它介质明显不同。隧道围岩中结构面的存在对围岩的力学性质具有非常大的影响,研究工程岩体的力学行为,必须首先清楚围岩中结构面的分布情况、力学性质。实践表明:坚硬岩体隧道的变形和破坏规律主要取决于岩体结构面的性质,隧道工程的稳定性状态受到围岩自身结构的控制。围岩中的结构面相互切割形成各种形状的块体,由于实际项目施工过程中的各种扰动行为,在隧道工程临空面上很容易形成“关键块体”,对施工工人和隧道稳定性构成一定的威胁。为保证施工过程安全性和隧道工程结构稳定性,采取一定的方法和手段研究和控制岩体结构面的变形和破坏,加强对隧道围岩结构面的研究,预测并控制“关键块体”的稳定性,就显示出相当的重要性。本论文在现场调研和大量文献的基础上,阐述了各种结构面理论以及在此基础之上的块体理论等相关原理和研究方法;基于块体理论以及现有面向对象的编程技术,开发出了岩体稳定性分析的功能模块,重点介绍了关键块体搜索模块前台数据输入和后台数据处理实现方法;以及Visual C++和openGL混合编程实现隧道工程的三维显示和旋转等实现方法;最后,采用GeoSMA1.0对沈大高速公路韩家岭隧道关键块体进行了模拟。
【Abstract】 The tunnel structure technique, as part of basic facilities, has developed greatly both in quantity and quality in China recently. Among these tunnel structures, numerous of which are built up in the mountain area and the fact brings many problems that as a kind of non-continuous media, the mechanical property of rock mass is quite different from the soil mass.The existence of the structural planes in the rock mass affects the mechanical property dramatically so the distribution and mechanical property of the structural planes should be investigated if we want to study intensive parameters for the tunnel structures. The fact shows that transformation and failure of rock mass depend on the structural plane’s property and so the tunnel structure’s stability depends on the rock mass’ structural planes. The blocks, which are shaped by the structural planes cutting through the rock mass, are easily becomes the "key blocks" around the tunnel structures by means of the disturbance in the construction process. These "key blocks" may cause severe consequences for the safety of workers and the tunnel structure itself.In this study, on the basis of many papers, all kinds of structural planes theory and the block theory are discussed in the first. Then taking the safety of tunnel structures as the research object and using Monte Carlo and the object-oriented method, the Geotechnical Structure and Model Analysis 1.0(GeoSMA 1.0) is developed. In this part, this paper introduces the treating process for inputting data and algorithm and also the mixed procedure of Visual C++ and openGL for picturing and rotating the tunnel structures in three dimension spaces. Finally, we analysis the stability of HanJiaLing tunnel structure by using GeoSMA 1.0.
【Key words】 rock tunnel structure; structural planes; key block theory; Monte Carlo method; GeoSMA1.0;