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| Three-Dimensional Visualization Calculation and Research on Dynamic Simulation of Landslide Based on Open GL |
| TAN Dong-sheng1，HONG Zheng2，YUAN Xiao-long3，YAO Wei1，Sun Shu-wei4 |
| 1 .Northwest Survey and Design Co. Ltd，CREC，Lanzhou，Gansu 730000，China；2. Lanzhou University ， Lanzhou Gansu 730000，China；3 .Xinjiang Jinwei Graphic Information Technology Co. Ltd，Urumqi，Xinjiang 830091，China 4. CUMTB，Beijing 100083，China |
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Abstract Research purposes: In the course of landslide research，a lot of the information related to the three dimensional space and position are involved，such as the geological information，location information and landslide shape etc. In general all these information appear in the form of statements and 2D graphics，they can not give a person an intuitive impression. In this way , it is difficult to make full use of these information and grasp these information when it is necessary to integrate the information，and it is impossible to analyze the their applicable effects for the arrangement and construction when making the virtual engineering design with the 3D space. In this paper ,the 3D visualization software for the landslide is successfully developed with the Open GL software for building the landslide model , managing the landslide data，calculating the stability and conducting the 3D dynamic simulation to solve the problems of the landslide prediction and dynamic simulation.
Research conclusions:(1)Using the Open GL to make the secondary development can successfully calculate the landslide stability and realize the dynamic simulation of the sliding process of the landslide according to the calculation results，with the simple，easy practical and scientific process. (2) If the Open GL is used for landslide，it can provide the Brat help for the landslide survey and design，the demonstration and the teaching simulation } and it can greatly improve the working efficiency and working level. (3 ) By using the 3D terrain model of the landslide spatial form and the 3D landslide section model,the functions of the mapping，storing and outputting of the topographic maps，sectional drawing and drilling data and connecting sliding surface etc can be realized，and it provides the rapid means for the stability evaluation and engineering design. (4) The trial calculation of engineering practice show in the same condition， the calculation result is in line with the result of the survey report. (5) This study result is available for the dynamic 3D visualization simulation and stability calculation of landslide.
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Received: 10 November 2012
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2013, Vol. 30 
