Landslide hazard zonation and preliminary results of debris flow simulation for the Hohwaeldibach-Torrent, Fluehli, Central Switzerland | |
| Author | Chaudhary, Krishna Bahadur |
| Call Number | AIT Thesis no.GE-04-18 |
| Subject(s) | Landslides--Switzerland Landslide hazard analysis--Switzerland |
| Note | A thesis submitted in pattial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. GE-04-18 |
| Abstract | This research focuses on the development of a practical applicable hazard zonation for a 4.43 km2 large area in the Canton of Lucerne, Switzerland. The area is known to produce significant debris in the main Hohwaeldibach torrent due to large scale mass movements and a significant number of soil slips. The geology of the area consists of flysch (marl, limestone, and claystone), molasse (predominant Hilferen-sandstone, partially with pudding stone layers) and includes a cover layer of colluvium of considerable thickness. In the southern part of the research area, the Northern Helvetic Nappes (limestone, calcarious marl, and sandstone) are outcropping. Small-scale old, as well as fresh sheet and rotational slides, lateral erosion along the channels are main instability indicators and debris producer. Large-scale mass movements of different depth are covering significant parts of the research area and contributing to the accumulation of mobile materials in the torrents. Intensive field work was carried out and various geotechnical site factors were taken into account to analyze the field situation. The collected field data was transferred using Arc View 3.2a to create a landslide inventory map. Large-scale landslides were classified according to their estimated depth and the estimated long-term mean velocity of the movements. These procedures led to the production of a primary landslide hazard map of the area. Rock fall potential of the areas was marked as per field observation. The final hazard map for the catchment area was then set up. Different reoccurrence periods of extreme events were assumed to estimate hazard and the affected areas were delineated and classified accordingly. With the data collected during field visit, amount of debris, which can be mobilized during heavy-rainfall events, were estimated and one-dimensional |
| Year | 2005 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. GE-04-18 |
| Type | Thesis |
| School | School of Engineering and Technology (SET) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Geotechnical Engineering (GE) |
| Chairperson(s) | Glawe, Ulrich |
| Examination Committee(s) | Noppadol Phien-wej; Park, Kyung-Ho; Honda, Kiyoshi |
| Scholarship Donor(s) | Government of Austria |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 2005 |