基于L系统的地震裂隙模拟研究  

RESEARCH ON SIMULATING EARTHQUAKE CRANNY BASED ON L SYSTEM

作　　者：张彦敏[1] 董承玮[2] 芮小平[2] 刘真余[2] 

机构地区：[1]交通运输部科学研究院 [2]中国科学院研究生院资源与环境科学学院

出　　处：《防灾减灾学报》2011年第4期8-13,共6页Journal of Disaster Prevention And Reduction

基　　金：深部探测技术与实验研究专项(201011075-5);国家自然科学基金(40901191)资助

摘　　要：分形技术根据物体的局部自相似特征,突破了以往只能生成较规则图形的局限性,能够利用较少的描述性语句构造出复杂的非规则图形,如树木,河流和地震裂隙等。地震断层的破裂结构具有复杂性与随机性,然而在破裂过程中,总体形态蕴涵着分形的性质,该文研究基于L系统的三维结构建模方法,用以模拟地震断层的破裂。本文通过对地震数据的采集,从整体几何结构出发,并考虑地震断层破裂的规律和岩石的各向异性,提出基于几何可观察性的三维地震断层破裂的L系统构造模型,最后基于OpenGL图形库,实现裂隙的三维可视化仿真。Fractal technology is based on local self-similarity of objects, which can generate complex irregular figures like trees, rivers and cranny, only using a few description sentences, and it breaks through the limitations of traditional methods that can only create regular figures. The construction of earthquake cranny is complex and random, but meanwhile, it also contains the fractal feature in general. This paper is focused on three dimensional construction modeling method for simulating earthquake cranny. Considering the rules of earthquake fault and the anisotropy of rock layers, authors put forward a three dimensional model for describing cranny expansion using L system, and realize the visual simulation of cranny based on OpenGL interfaces.

关 键 词：地震裂隙 L系统 分形 各向异性 

分 类 号：P315.8[天文地球—地震学]