Research output per year
Research output per year
Abstract
Quito, Ecuador, is a rapidly expanding multi-hazard environment at increased risk of rainfall-triggered landslides. In such cities, information on the impact of urbanisation on slopes and rainfall intensity-duration thresholds for triggering landslides can be valuable for resilient urban planning. However, rainfall thresholds are usually generated from empirical landslide data, which is often unavailable. This paper presents an overview of recent stochastic landslide modelling work, enabling regional sensitivity analysis and the development of rainfall thresholds based on tens-of-thousands of physics-based slope stability simulations. Typical landslide-prone communities in north Quito are characterised in terms of degree of urbanisation, slope geometry, soil properties and rainfall scenarios. Soil data came from
the new Quito soil geotechnical database and drone mapping successfully resolved slope geometries and more detailed information such as construction materials and slope features. An overview of the modelling methodology is presented. The key findings of the simulation study are that slope cutting, followed by removal of vegetation are the key drivers of slope instability. These findings are discussed in the context of recommendations for land use policy in the studied areas.
the new Quito soil geotechnical database and drone mapping successfully resolved slope geometries and more detailed information such as construction materials and slope features. An overview of the modelling methodology is presented. The key findings of the simulation study are that slope cutting, followed by removal of vegetation are the key drivers of slope instability. These findings are discussed in the context of recommendations for land use policy in the studied areas.
| Original language | English |
|---|---|
| Title of host publication | Geotechnical Engineering Challenges to Meet Current and Emerging Needs of Society |
| Subtitle of host publication | Proceedings of the XVIII European Conference on Soil Mechanics and Geotechnical Engineering, 26–30 August 2024, Lisbon, Portugal |
| Editors | Nuno Guerra, Manuel Matos Fernandes, Cristiana Ferreira, António Gomes Correia, Alexandre Pinto, Pedro Sêco e Pinto |
| Place of Publication | Abingdon, Oxon |
| Publisher | CRC Press/Balkema, Taylor & Francis Group |
| Pages | 1146-1149 |
| Number of pages | 4 |
| Edition | 1st |
| ISBN (Electronic) | 978-1-003-43174-9 |
| ISBN (Print) | 978-1-032-54816-6 |
| DOIs | |
| Publication status | Published - 17 Sept 2024 |
| Event | XVIII European Conference on Soil Mechanics and Geotechnical Engineering - Lisbon, Portugal Duration: 26 Aug 2024 → 30 Aug 2024 https://www.ecsmge-2024.com/ |
Conference
| Conference | XVIII European Conference on Soil Mechanics and Geotechnical Engineering |
|---|---|
| Abbreviated title | ECSMGE 24 |
| Country/Territory | Portugal |
| City | Lisbon |
| Period | 26/08/24 → 30/08/24 |
| Internet address |
Keywords
- slope stability
- CHASM
- stochastic modelling
- urbanisation
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Developing geodatabases in data-scarce regions: A case study of the Kathmandu Valley, Nepal
Vardanega, P. J., Gilder, C., De Risi, R., De Luca, F., Werner, M. & Pokhrel, R., 4 Aug 2023, Smart Geotechnics for Smart Societies: Proceedings of the 17th Asian Regional Conference on Soil Mechanics and Geotechnical Engineering (17ARC), Astana, Kazakhstan, 14-18 August 2023. Zhussupbekov, A., Sarsembayeva, A. & Kaliakin, V. N. (eds.). London: CRC Press/Balkema, Taylor & Francis Group, p. 1265-1270 6 p.Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)
Open AccessFile1 Citation (Scopus)28 Downloads (Pure) -
Geotechnical variability of the soils of Quito, Ecuador: a geodatabase study
Othman, M. M. A., Hen-Jones, R. M., Zapata, C., Jiménez, E., De Luca, F., Holcombe, E. A. & Vardanega, P. J., 1 Nov 2023, In: Bulletin of Engineering Geology and the Environment. 82, 11, 20 p., 433.Research output: Contribution to journal › Article (Academic Journal) › peer-review
Open AccessFile1 Citation (Scopus)60 Downloads (Pure) -
Modelling the effect of hydraulic conductivity variability on slope stability calculations for a site in South-East Quito, Ecuador
Zapata, C., Holcombe, E. A., Vardanega, P. J. & Jiménez, E., 7 Jun 2023, European Geotechnical Engineering - Unity and Diversity: Proceedings of the 17th Danube–European Conference on Geotechnical Engineering, 7-9 June 2023, Bucharest, Romania. Lungu, I., Teodoru, I.-B. & Batali, L. (eds.). Işai, România: Politehnium Publishing House, Vol. 2. p. 773-780 8 p.Research output: Chapter in Book/Report/Conference proceeding › Conference Contribution (Conference Proceeding)
Open AccessFile
Projects
- 1 Finished
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Tomorrow's Cities Phase 3 Funding
Holcombe, E. A. (Principal Investigator)
1/04/23 → 31/03/24
Project: Research
Datasets
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Quito Geotechnical Database v1.1
Othman, M. (Creator), Hen-Jones, R. (Creator), Zapata, C. (Creator), Jimenez, E. (Creator), De Luca, F. (Creator), Holcombe, E. A. (Creator) & Vardanega, P. J. (Creator), University of Bristol, 23 Oct 2023
DOI: 10.5523/bris.ys9nfsd66knb21h3twx2rfin6, http://data.bris.ac.uk/data/dataset/ys9nfsd66knb21h3twx2rfin6
Dataset