iRALL-International Research Association on Large Landslides

Chengdu Part of iRALL 2017 ends successfully

Editor:admin Time:2017-10-20 View:   【Font Size:Big Middle Small

        Started on October 15th, iRALL 2017 ended its preceding course in CDUT. The rest course will be carried out at the Beichuan field base, combining theory with practice. In Chengdu, some international experts gave wonderful lectures, referring to geotechnical engineering, engineering geology, disaster prevention and mitigation, etc..


        On October 16th, Prof.Mauri McSaveney, from New Zealand Geological Survey, gave a lecture titled “An introduction to large landslides: The joy of landslides”, elaborated the significance and importance of geomorphology in engineering geological project, and also introduced the definition and characteristics of landslides as well as large landslides. Besides, Mauri showed some interesting landslide cases and landscapes encountered in his researches, which attracted students’ interest and attention. In the end, he analyzed the current situation of landslide research.


        Then, D.V.Griffith from Colorado University of Mining introduced the analysis method of landslide stability from following five aspects: Analytical Methods, Charts, Methods of Slices, Finite Element Method, and slope64 program.


        On the afternoon of October 16th, Theo Van Asch from Utrecht University in the Netherlands, introduced landslide numerical simulation. Taking Yigong, Tibet as an example, he explained the movement simulation of landslide, load variation, entrainment effect and consolidation process. Theo also introduced a landslide analysis software developed by himself. Finally, Theo checked students’ studies carefully, and also gave some suggestions and encouragement to different students. The whole class was lively and interesting.


        On the morning of October 17th, Prof. Mauri gave a lecture titled “Fragmenting Granular Flow”, which explained the relationship between granular flow and landslide. He elaborated the concepts of dense granular flow, stress chain, brittle and elastic grains, instantaneous granular strain, Culomb failure criterion and Griffith failure criterion. Students’horizons were broaden.


        Then, Prof. Xu and Prof. Hu led these students to do field investigation at Kualiangzi Research Base, Deyang, Sichuan, accompanied by Mauri McSaveney and Hans-Balder Havenith.


        Xu elaborated the genetic mechanism and formation process of this translational landslide. All teachers and students climbed to the landslide top and observed its deformation signs.During this field trip, some students downed to the 8-meter exploration well and 2-meter trench to closely observe the sliding zone and its formation process. During the whole trip, Xu frequently communicated with students and put forward many questions to encourage them to think and find answers. All in all, it was a vivid and lively trip.


        This field trip provided a great opportunity for students to investigate landslide closely. It not only combined theories with practice, but also improved students’ field investigation ability. Through this trip, a strong relationship between teachers and students was built up, too!


        In the next ten days, these teachers and students will go to Beichuan research base for further study and field investigation. They will gain more knowledge and more experience there.