基于 Unity3D 的三维虚拟化构造产状测量系统研发

构造结构面产状量测是地质调查研究的重要工作之一,面对高陡边坡、岩性不稳定等不易到达的区域, 传统测量方法存在的安全性差、测量效率低等问题,亟待采用无人机与三维虚拟化等方法进行解决。Unity3D 平台应用广泛,近年来已逐步应用于地质相关工作,但以往研究工作多面向于三维可视化,对于进一步应用其开展三维地质测量等工作的研究较为薄弱。 针对三维虚拟化构造产状测量方法进行了研究,并基于 Unity3D 平台设计开发了三维虚拟化构造产状测量软件系统,系统实现了基于三维实景模型的构造产状三维量测以及地质编录、构造解译图件自动化绘制等实用功能。 实例研究表明:基于 Unity3D 的三维虚拟化构造产状测量系统开发、使用便捷,配合9点位量 测法结合去四分位数后求均值的平差方法测量效果更优,可有效降低测量误差;测量结果与传统实地产状测量结果一致性较好,误差均控制在 5°以内,可满足工程应用的基本要求;相关方法和软件系统可以显著降低野外实测工作难度,在保证量测精度的同时提高量测效率。

Design and Development of 3D Virtualization Tectonic Occurrence Based on Unity3D

The occurrence measurement of structural plane is one of the important work of geological survey and research. In the face of inaccessible areas such as high and steep slope and unstable lithology,there are some problems in traditional measurement methods,such as poor safety and low measurement efficiency,which need to be solved by UAV and threedimensional virtualization. Unity3D platform is widely used during this years. It has been gradually applied to geological related work,but the previous research work focuses on 3D visualization,as well as the research on further applying it to 3D geological survey is relatively weak. According to the above requirements,this paper studies the 3D virtual structural attitude measurement method,and designs and develops the 3D virtual structural attitude measurement software system based on Unity3D platform. The system realizes the practical functions of 3D structural attitude measurement based on 3D real scene model,geological recording and automatic drawing of structural interpretation maps. The case study results show that the 3D virtual structure occurrence measurement system based on Unity3D is easy to develop and use. Combined with the nine point measurement method and the adjustment method of finding the mean after removing the quartile,the measurement effect is better,and the error of measurement can be effectively reduced. The measurement results are in good agreement with the traditional field attitude measurement results,and the errors are controlled within 5°,which can meet the basic requirements of engineering application. The related methods and software systems can significantly reduce the difficulty of field measurement and improve the measurement efficiency while ensuring the measurement accuracy.