The 2nd International Conference on Smart Informatics and Multi-hazard Reduction (SIMR 2025) will be held in Chengdu, China, from 11 to 16 September 2025. Centering on the theme "Empowering Resilience: Transferring Technologies into Solutions for Effective Disaster Risk Reduction", the conference will address disaster risks intensified by climate change through in-depth discussions on multi-hazard interaction mechanisms, applications of digital technologies like AI and big data, and interdisciplinary collaboration pathways. It aims to catalyze the translation of emerging technologies into practical disaster reduction solutions while strengthening capabilities in risk assessment and response. The conference also serves as a global platform for researchers and professionals to share cutting-edge research, foster international cooperation, and advance theoretical and practical innovations in multi-hazard governance to enhance global disaster resilience.

Field Trip Route 1

1.Dujiangyan

Dujiangyan, situated west of Dujiangyan City in Chengdu, Sichuan Province, is a monumental hydraulic system comprising the headwork structure (Fish Mouth Levee; Flying Sand Weir; Bottle-Neck Channel), multi-tiered irrigation canals, diverse engineering constructions, and reservoirs/ponds of varying scales. As the world’s oldest and only surviving large-scale dam-free diversion irrigation project, Dujiangyan has operated flawlessly for 2,250 years since the 3rd century BCE. Today, it still irrigates over 754,000 hectares (1.13 million mu) of farmland across the Sichuan Basin, with its benefits continually expanding.

Dujiangyan lrrigation System(Ancient Irrigation System)

2.Zipingpu Dam

Located on the upper Min River northwest of Chengdu, Sichuan Province, the Zipingpu Water Control Project serves as a multi-purpose hydraulic complex primarily designed for irrigation and water supply, with additional benefits in power generation, flood control, environmental protection, and tourism. Functioning as the regulatory water source hub for the Dujiangyan Irrigation System, the project's dam stood just 17.17 km from the epicenter of the 2008 Wenchuan Earthquake. Enduring seismic intensities of IX-X on the Modified Mercalli scale during the Mw 7.9 quake, Zipingpu Dam achieved a monumental feat in global geotechnical engineering—becoming the world’s first large-scale concrete-faced rockfill dam (CFRD) to withstand near-fault M8+ ground motions, thus etching a milestone in the seismic resilience history of rockfill dams.

Zipingpu Dam (Earthquake-resistant engineering)

3.Yingxiu Town

Yingxiu Town, situated in the southeast of Wenchuan County, endured some of the most catastrophic damage during the 2008 Wenchuan Earthquake. The seismic event triggered massive rock avalanches and landslides, depositing approximately 9 billion cubic meters of unstable debris within mountainous valleys. These unconsolidated accumulations remain highly susceptible to mobilizing into catastrophic debris flows during intense rainfall.

The year 2010 witnessed the most severe secondary debris flow disasters in the affected region. On 14 August, Yingxiu—near the quake's epicenter—was struck by successive debris flows and flooding. This field route examines two emblematic post-quake geological hazards and their engineered countermeasures:

Xuankou Middle School Seismic Memorial Site (Yingxiu)

4.Large-scale Debris Flow Channels (Hazard mitigation case studies)

Niujuan Gully
Niujuan Gully marks the hypocenter of the 2008 Wenchuan Earthquake (Mw 7.9), with the epicenter “Lianhuaxin” located at its headwaters. Pre-earthquake geohazards were minimal in this valley. The seismic release ejected millions of cubic meters of subsurface rock, generating a rare seismic rock avalanche that cascaded downslope and collided with valley walls, forming a unique hypocenter landscape. Post-quake, frequent collapses and landslides accumulated approximately 6.95 million m³ of unstable debris, providing ample material for recurrent large-scale debris flows.

Hongchun Gully
Located on the left bank of the Min River near the 2008 epicenter, Hongchun Gully drains a 5.35 km² catchment with elevations ranging 880–1700 m. After the earthquake, its unconsolidated deposits surged to 3.5 million m³. At 03:00 on 14 August 2010, intense rainfall triggered a catastrophic debris flow that entrained loose materials through severe bed and bank erosion. The flow rushed into the Min River, forming a 470 m long × 350 m wide deposit fan that blocked the main channel. This diversion forced the river toward Yingxiu Town, causing devastating flooding and casualties.