Socio and Eco Environmental Risk Management, Department of Urban Management, Kyoto University


Workshop Information


SBT 2nd International Workshop on Sediment Bypass Tunnels

Thank you very much for attending this workshop. The workshop was finished with great success   Closing remarks   Short report
Dates: 9th (Tuesday) to 12th (Friday) of May, 2017
Venue: Kihada Hall, Uji Campus, Kyoto University 
Workshop: 9th to 10th morning    program
Welcome Reception: Evening of 9th, at the restaurant of a Japanese sake factory
Study Tour: 10th afternoon to 12th
Organizer: Disaster Prevention Research Institute (DPRI), Kyoto University
Co-organizer: Laboratory of Hydraulics, Hydrology and Glaciology (VAW), ETH Zurich
                     National Taiwan University
Supported by: Ministry of Land, Infrastructure, Transport and Tourism (MLIT)
                       Nagano Prefecture
                       Kansai Electric Power Co., Inc.

Sediment bypass tunnels (SBT) are hydraulic structures that gain worldwide importance as a measure to counter reservoir sedimentation. Sediments are bypassed around a dam to the tailwater reach reducing sediment aggradation in the reservoir on the one hand and allowing for re-establishing sediment continuity on the other. The latter is more and more aimed at from an ecological point of view since river bed erosion downstream of the dam is decelerated along with an increase of morphological and ecological variability.
The 1st IWSBT in April 2015 hosted by the Laboratory of Hydraulics, Hydrology and Glaciology at ETH Zurich, Switzerland, was a great success with 89 participants from 12 countries gathering to exchange and discuss latest research findings and experiences.
We joyously invite you to participate at the 2nd IWSBT taking place in Kyoto, Japan, to further discuss newest SBT-related topics. A 1.5 day workshop will be held at Kyoto University, Uji Campus, accompanied by a 2 day field trip to Nagano Prefecture to visit the Miwa, Koshibu and Matsukawa sediment bypass tunnels.


Upstream Aspects (Hydrology, Sediment Erosion & Inflow)
Tunnel (Hydraulics & Sediment Transport, Planning/Design, Tunnel & Inlet Works,
                     Invert Abrasion, Maintenance)
Downstream Aspects (Morphological Changes, Ecological Effects)
Operation (Monitoring & Instrumentation, Real-time Operation)


Dr. George Annandale 

Principal, George W. Annandale, Inc.

Dr. Annandale is a civil engineer with 42 years of experience specializing in water resources engineering. He is an expert in reservoir sedimentation management and is known for his expertise in scour of rock.

Title of keynote: Raising a Child and the Zen of Sediment Management


Dr. Chien-Hsin Lai 

Director-General, Water Resources Agency, Director of Water Resources Agency, Ministry of Economic  Affair , Taiwan (R.O.C.)

Dr. Chien-Hsin Lai was appointed as the Director-General of Water Resources Agency (WRA), Ministry of Economic Affairs since November 2016. Prior to that, he was the Deputy Director-General and the Chief Secretary of WRA, and the Director of Southern Region Water Resources Office. He was in charge of many important projects, including the emergency response plan for Cao Ling landslide dammed lake during Chi-Chi Earthquake, the trans-watershed diversion project of and sediment sluicing tunnel project of Tseng Wen Reservoir. To recognize his hard work, WRA awarded him the Outstanding Senior Award in 2006, and the Executive Yuan awarded him the Model Civil Servant Award in 2007.

Title of keynote: Hydraulic Desilting of Reservoir in Taiwan



  9th (Tue) May 2017  detail program
   Keynote by Dr. George Annandale "Raising a Child and the Zen of Sediment Management"
   Keynote by Dr. Chien-Hsin Lai "Hydraulic Desilting of Reservoir in Taiwan"
   Session 1: Sediment bypass projects in the world
   Session 2: Predicting and controlling sediment in upstream river and reservoirs
   Session 3: Tunnel (hydraulics, invert abrasion, maintenance)
   Poster Session
   Welcome Reception
  10th (Wed)  detail program
   Session 4: Bedload monitoring
   Session 5: Downstream aspects (morphological and ecological effects)
   Session 6: Operation and environment impact assessment
   Poster Session
   Move to Hirugami Hot Springs (Onsen), Nagano for Study Tour
  11th (Thu) 
   Visit Matsukawa and Koshibu SBTs
   Stay in Ina, Nagano
  12th (Fri)
   Visit sediment control works (Sabo dams), Miwa SBT, dam downstream
   Return to Kyoto or go Tokyo (from Ina to Tokyo, 3500JPY and 4hours by highway bus)


Workshop participation:    10.000 JPY (incl. Proceeding, Lunch, Welcome Reception)

Study tour:                      45.000 JPY (incl. Bus, Hotel, Meal)


Socio & Eco Environment Risk Management (Sumi Lab.),
Water Resource Research Center, Disaster Prevention Research Institute, Kyoto University

Other information

Accomodation in Kyoto   look