Evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate
Abstract Assessments of highway feasibility frequently lack the detailed data and geological information necessary to conduct hazard evaluations of debris flows. This study discusses the processes of debris flow development when regional rainfall meets the critical level required for debris flow ini...
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Nature Portfolio
2024-06-01
|
| Series: | Scientific Reports |
| Subjects: | |
| Online Access: | https://doi.org/10.1038/s41598-024-64279-y |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832571686137888768 |
|---|---|
| author | Na He Ruze Han Guisheng Hu Zhiquan Yang Linjuan Xu Filip Gurkalo |
| author_facet | Na He Ruze Han Guisheng Hu Zhiquan Yang Linjuan Xu Filip Gurkalo |
| author_sort | Na He |
| collection | DOAJ |
| description | Abstract Assessments of highway feasibility frequently lack the detailed data and geological information necessary to conduct hazard evaluations of debris flows. This study discusses the processes of debris flow development when regional rainfall meets the critical level required for debris flow initiation. It utilizes geomorphic evolution theory and establishes a regional risk assessment matrix for debris flow by combining information about gullies and source sensitivity. Considering the location relationship between the highway and debris flow gullies, a rapid evaluation method for debris flow risk assessment along the G318 highway in Sichuan Province is proposed by modifying the judgment matrix. The four debris flow gullies constructed during the upgrading project in Yajiang County, stretching from the west of the city to the Shearer Bay section, were analyzed via examples. The results show that, among the four selected debris flow gullies, two had medium hazard levels, and two had high hazard levels. The validation results are consistent with the actual results, implying that the evaluation method used in this study is accurate and feasible. This method is suitable for the rapid evaluation of debris flow disaster hazards in the feasibility assessment stage of a highway because it relies on readily available data sources, and the evaluation results are fast and convenient. The highway passes through four debris flow gullies, which directly impact the alignment of this particular section of the geological route and the engineering layout. Based on current specifications, the maximum impact range of a one-time debris flow under the given frequency conditions was calculated using the "rainfall method." The results showed that the maximum impact ranges of a debris flow, occurring once in 100 years, for four gullies would be 9.08 m, 9.09 m, 10.86 m, and 10.08 m. The safe clearance heights of bridges over the four gullies should be 14.58 m, 14.59 m, 16.36 m, and 16.3 m. Additionally, the safety clearance width for all gullies should be 5.0 m. |
| format | Article |
| id | doaj-art-d4a0ee09cac947af82deb5b8878b6b2b |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2024-06-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Scientific Reports |
| spelling | doaj-art-d4a0ee09cac947af82deb5b8878b6b2b2025-02-02T12:25:34ZengNature PortfolioScientific Reports2045-23222024-06-0114111810.1038/s41598-024-64279-yEvaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rateNa He0Ruze Han1Guisheng Hu2Zhiquan Yang3Linjuan Xu4Filip Gurkalo5School of Civil Engineering, Henan Polytechnic UniversitySchool of Civil Engineering, Henan Polytechnic UniversityInstitute of Mountain Hazards and Environment, Chinese Academy of Sciences and Ministry of Water ResourcesFaculty of Public Safety and Emergency Management, Kunming University of Science and TechnologyKey Laboratory of Lower Yellow River Channel and Estuary Regulation, MWR, Yellow River Institute of Hydraulic Research, YRCCSchool of Civil Engineering, Henan Polytechnic UniversityAbstract Assessments of highway feasibility frequently lack the detailed data and geological information necessary to conduct hazard evaluations of debris flows. This study discusses the processes of debris flow development when regional rainfall meets the critical level required for debris flow initiation. It utilizes geomorphic evolution theory and establishes a regional risk assessment matrix for debris flow by combining information about gullies and source sensitivity. Considering the location relationship between the highway and debris flow gullies, a rapid evaluation method for debris flow risk assessment along the G318 highway in Sichuan Province is proposed by modifying the judgment matrix. The four debris flow gullies constructed during the upgrading project in Yajiang County, stretching from the west of the city to the Shearer Bay section, were analyzed via examples. The results show that, among the four selected debris flow gullies, two had medium hazard levels, and two had high hazard levels. The validation results are consistent with the actual results, implying that the evaluation method used in this study is accurate and feasible. This method is suitable for the rapid evaluation of debris flow disaster hazards in the feasibility assessment stage of a highway because it relies on readily available data sources, and the evaluation results are fast and convenient. The highway passes through four debris flow gullies, which directly impact the alignment of this particular section of the geological route and the engineering layout. Based on current specifications, the maximum impact range of a one-time debris flow under the given frequency conditions was calculated using the "rainfall method." The results showed that the maximum impact ranges of a debris flow, occurring once in 100 years, for four gullies would be 9.08 m, 9.09 m, 10.86 m, and 10.08 m. The safe clearance heights of bridges over the four gullies should be 14.58 m, 14.59 m, 16.36 m, and 16.3 m. Additionally, the safety clearance width for all gullies should be 5.0 m.https://doi.org/10.1038/s41598-024-64279-yHighway debris flowGully information entropyPhysical source sensitivityWatershed unit material response rateHazard evaluation |
| spellingShingle | Na He Ruze Han Guisheng Hu Zhiquan Yang Linjuan Xu Filip Gurkalo Evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate Scientific Reports Highway debris flow Gully information entropy Physical source sensitivity Watershed unit material response rate Hazard evaluation |
| title | Evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate |
| title_full | Evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate |
| title_fullStr | Evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate |
| title_full_unstemmed | Evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate |
| title_short | Evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate |
| title_sort | evaluation of highway debris flow hazard based on geomorphic evolution theory coupled with material response rate |
| topic | Highway debris flow Gully information entropy Physical source sensitivity Watershed unit material response rate Hazard evaluation |
| url | https://doi.org/10.1038/s41598-024-64279-y |
| work_keys_str_mv | AT nahe evaluationofhighwaydebrisflowhazardbasedongeomorphicevolutiontheorycoupledwithmaterialresponserate AT ruzehan evaluationofhighwaydebrisflowhazardbasedongeomorphicevolutiontheorycoupledwithmaterialresponserate AT guishenghu evaluationofhighwaydebrisflowhazardbasedongeomorphicevolutiontheorycoupledwithmaterialresponserate AT zhiquanyang evaluationofhighwaydebrisflowhazardbasedongeomorphicevolutiontheorycoupledwithmaterialresponserate AT linjuanxu evaluationofhighwaydebrisflowhazardbasedongeomorphicevolutiontheorycoupledwithmaterialresponserate AT filipgurkalo evaluationofhighwaydebrisflowhazardbasedongeomorphicevolutiontheorycoupledwithmaterialresponserate |