Analysis of debris flow control effect and hazard assessment in Xinqiao Gully,Wenchuan Ms 8.0 earthquake area based on numerical simulation

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外文摘要：Xinqiao Gully is located in the area of the 2008 Wenchuan Ms 8.0 earthquake in Sichuan province,China.Based on the investigation of the 2023"6-26"Xinqiao Gully debris flow event,this study assessed the effectiveness of the debris flow control project and evaluated the debris flow hazards.Through field investigation and numerical simulation methods,the indicators of flow intensity reduction rate and storage capacity fullness were proposed to quantify the effectiveness of the engineering measures in the debris flow event.The simulation results show that the debris flow control project reduced the flow intensity by 41.05％to 64.61％.The storage capacity of the dam decreases gradually from upstream to the mouth of the gully,thus effectively intercepting and controlling the debris flow.By evaluating the debris flow of different recurrence intervals,further measures are recommended for managing debris flow events.

外文关键词：

LandslideDebris flowHazard assessmentNumerical simulationOpenLISEMPrevention and control projectWenchuan Ms 8.0 earthquakeXinqiao GullySichuan provinceGeological hazards survey engineering

作者：

Chang Yang、Yong-bo Tie、Xian-zheng Zhang、Yan-feng Zhang、Zhi-jie Ning、Zong-liang Li

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作者单位：

Chinese Academy of Geological Sciences,Beijing 100037,China

Chengdu Center of China Geological Survey,China Geological Survey,Chengdu 610081,China

Technology innovation center for risk prevention and mitigation of geohazard,Ministry of Natural Resources,Chengdu 611734,China

Observation and Research Station of Chengdu Geological Hazards,Ministry of Natural Resources,Chengdu 610000,China

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基金：

project of the China Geological SurveyNational Natural Science Foundation of China

项目编号：

No.DD20221746Grant Nos.41101086

出版年：

2024

DOI：

10.31035/cg2023144

中国地质(英文)

中国地质调查局,中国地质科学院

中国地质(英文)

CSTPCD

ISSN：2096-5192

年,卷(期)：2024.7(2)

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