| 李国营,郭红东.基于Flow-R的黄土丘陵区小流域泥石流危险性研究
——以白银市靖远县教场沟为例[J].甘肃地质,2024,(3):52-57 |
| 基于Flow-R的黄土丘陵区小流域泥石流危险性研究
——以白银市靖远县教场沟为例 |
| Study on the Hazard of Debris Flow in Small Watershed in Loess Gully Region Based on Flow－R Software： A Case Study of Jiaochang Gully， Jingyuan County, Baiyin City ｏf China |
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| DOI： |
| 中文关键词: 泥石流 危险性 黄土沟壑区 Flow-R 甘肃白银 |
| 英文关键词:debris flow hazard loess gully region evaluation soft program Baiyin |
| 基金项目:兰白都市经济圈典型黄土滑坡诱发因素及其启动机制研究（GSAU-JSFW-2023-164） |
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| 中文摘要: |
| 随着极端气候频发和人类活动的剧增，黄土丘陵区的泥石流灾害发生频率越来越高，给当地城镇造成了严重的经济损失和人员伤亡。因此，拟以白银市靖远县教场沟为研究区，利用野外调查、综合遥感技术、ArcGIS软件和Flow-R软件进行小流域泥石流危险性研究。结果显示沟道内泥石流危险程度明显高于其他区域，且随着条件概率增加而增加。在10年、50年和100年一遇情况下，泥石流危险区分别约占整个研究区的16. 60%、28. 72%和51. 77%，极高—高危险等级面积比例分别占20.15%、19. 97%和19. 27%。该成果可为区域的防灾减灾和土地利用开发提供科学依据。 |
| 英文摘要: |
| With the frequent occurrence of extreme climate and the rapid increase of human activities, the frequency of debris flow disaster is increasing in loess gully region, which has caused serious economic losses and casualties to local towns. Therefore, Jiaochang gull, Jingyuan County of Baiyin City was selected as the research area, comprehensive remote technology, field survey, ArcGIS software and Flow-R software were applied to study the hazard of debris Flow in small watershed. The results showed that the hazard probability of debris flow in the channel was obviously higher than that in other areas, and it was increased with the increasing of conditional probability. In the case of 10, 50 and 100 years, the hazard area of debris flow was accounted for 16. 60%,
28. 72% and 51. 77% of the whole study area, respectively, and the proportion of extremely high and high hazard area was accounted for 20. 15%, 19. 97% and.19. 27%, severally. The results can provide a scientific basis for disaster prevention and reduction and land use and development in the region. |
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