岩土工程勘察数据信息是建筑信息模型BIM(Building Information Model)数据信息的重要组成部分。本文重点讨论了岩土工程勘察的BIM建模方法及其专业应用上的特殊性,介绍了基于BIM的岩土工程勘察软件系统的关键技术,对适用于岩土工程可...岩土工程勘察数据信息是建筑信息模型BIM(Building Information Model)数据信息的重要组成部分。本文重点讨论了岩土工程勘察的BIM建模方法及其专业应用上的特殊性,介绍了基于BIM的岩土工程勘察软件系统的关键技术,对适用于岩土工程可视化的插值技术进行研究,研发了基于NURBS和Brep技术的三维岩土体模型架构,总结了岩土工程勘察BIM建模的流程。使用该技术路线开发了基于BIM的岩土工程勘察软件系统,并介绍了该软件系统的工程应用。展开更多
A catastrophic landslide occurred at Xinmo village in Maoxian County, Sichuan Province,China, on June 24, 2017. A 2.87×106 m3 rock mass collapsed and entrained the surface soil layer along the landslide path. Eig...A catastrophic landslide occurred at Xinmo village in Maoxian County, Sichuan Province,China, on June 24, 2017. A 2.87×106 m3 rock mass collapsed and entrained the surface soil layer along the landslide path. Eighty-three people were killed or went missing and more than 103 houses were destroyed. In this paper, the geological conditions of the landslide are analyzed via field investigation and high-resolution imagery. The dynamic process and runout characteristics of the landslide are numerically analyzed using a depth-integrated continuum method and Mac Cormack-TVD finite difference algorithm.Computational results show that the evaluated area of the danger zone matchs well with the results of field investigation. It is worth noting that soil sprayed by the high-speed blast needs to be taken into account for such kind of large high-locality landslide. The maximum velocity is about 55 m/s, which is consistent with most cases. In addition, the potential danger zone of an unstable block is evaluated. The potential risk area evaluated by the efficient depthintegrated continuum method could play a significant role in disaster prevention and secondary hazard avoidance during rescue operations.展开更多
文摘岩土工程勘察数据信息是建筑信息模型BIM(Building Information Model)数据信息的重要组成部分。本文重点讨论了岩土工程勘察的BIM建模方法及其专业应用上的特殊性,介绍了基于BIM的岩土工程勘察软件系统的关键技术,对适用于岩土工程可视化的插值技术进行研究,研发了基于NURBS和Brep技术的三维岩土体模型架构,总结了岩土工程勘察BIM建模的流程。使用该技术路线开发了基于BIM的岩土工程勘察软件系统,并介绍了该软件系统的工程应用。
基金Financial support from National Nature Science Foundation of China (Grant No. 41572303, 41520104002)Chinese Academy of Sciences “Light of West China” Program and Youth Innovation Promotion Association
文摘A catastrophic landslide occurred at Xinmo village in Maoxian County, Sichuan Province,China, on June 24, 2017. A 2.87×106 m3 rock mass collapsed and entrained the surface soil layer along the landslide path. Eighty-three people were killed or went missing and more than 103 houses were destroyed. In this paper, the geological conditions of the landslide are analyzed via field investigation and high-resolution imagery. The dynamic process and runout characteristics of the landslide are numerically analyzed using a depth-integrated continuum method and Mac Cormack-TVD finite difference algorithm.Computational results show that the evaluated area of the danger zone matchs well with the results of field investigation. It is worth noting that soil sprayed by the high-speed blast needs to be taken into account for such kind of large high-locality landslide. The maximum velocity is about 55 m/s, which is consistent with most cases. In addition, the potential danger zone of an unstable block is evaluated. The potential risk area evaluated by the efficient depthintegrated continuum method could play a significant role in disaster prevention and secondary hazard avoidance during rescue operations.
