Laboratory of Erosion Control

Staff       Professor: Mizuyama, Takahisa, Dr. Agric. Sci.

       Associate Professor: Satofuka, Yoshifumi, Dr. Eng.

       Instructor: Kosugi, Ken'ichirou, Dr. Agric. Sci.

Students and research fellows

       Doctor's program: (3)        

       Master's program: (9)

       Undergraduate: (3)

A. Research Activities(2004.4-2005.3)

A-1. Main subjects

a) Mechanism of sediment movement

Basic research has been carried out on debris flow, flash flood, and shallow landslide. The relationship between shallow landslide and underground pipe flow and the flow in bedrock are studied particularly.

b) Countermeasures to prevent or reduce sediment disasters and the Sabo-planning being compatible with environmental concerns. More effective permeable dams are experimentally investigated in order to store the excessive sediment and, at the same time, not to damage the eco-system established in the streams. A function of a series of slit sabo dams was studied by flume experiments and computer simulation.

c) Forest influence on the hydrologic cycle

Elements controlling hydrologic cycle in forest are studied. Effects of forest soil hydraulic properties on water discharge from forested watersheds are analyzed by laboratory experiments, field measurements, and numerical simulation methods. Evapo-transpiration is one of the major factors. Models to interpret the phenomena are built.

d) Sediment movement and integrated sediment management in river system

Sediment production process and sediment movement process in mountain region are investigated using a video camera system and turbidity meters. A numerical model for calculating sediment routing is also developed. Using these results, the sediment management for mitigating sediment-related disaster and providing better natural environment from mountains to seashore is studied.

e) Sediment related disasters

Debris flow disasters were surveyed in Venezuela where debris flows and landslides occurred in December, 1999. Following debris flows from landslides, landslide dams and other damages by September 21 Taiwan Earthquake were surveyed in the field. Mudflow was studied in Miyake Island after eruptions.

f) Buffer green belt against sediment hazards                           

The effects of trees against debris flow and landslide are studied to design buffer green belts. Infiltration and water storage characteristics are studied in different tree kinds.

A-2. Publications and presentations

a) Publications

Books

Mizuyama,T., T.Uchida and A.Kimoto：Effect of hillside works on granite slopes: Terracing and planting　Ground and water bioengineering for erosion control and slope stabilization,　edited by D.Barker et al., Science Publishers, Inc. 2004, p.151-160, 2004

Kosugi, K.: Function of forest as dam (Ed. by Kurachi, K. and Hoyano, H.), Tsukijishokan, Tokyo, 2004.

Kosugi, K.: Evaluation of unsaturated soil, (Ed. by Japanese Geotechnical Society), Japanese Geotechnical Society, Tokyo, 2004.

Kosugi, K.: Sabo Technical Dictionary, (Ed. by Japan Society of Erosion Control Engineering), Sankaido, Tokyo, 2004.

Original papers

Okuda, S., T. Mizuyama, S. Tabata, K. Seno, T. Yanagimachi; Current development status of hydrometric systems, sediment monitoring systems and information transmission technique for the purpose of preventing sediment disasters, INTERPRAEVENT 2004, I/87-96, 2004

Mizuyama,T., S. Tabata, T. Mori, F. Watanabe, K.Inoue; Outbursts of landslide dams and prevention, INTERPRAEVENT 2004, IV/221-229, 2004

Hasagawa, Y., A. Oda, T. Mizuyama, I.Izumi, H.Abe; Evaluation of the function of slit sabo dams through hydraulic model experiments, INTERPRAEVENT 2004 VII/107-118, 2004

Ono, G., T.Mizuyama, K.Matsumura; Current practices in the design and evaluation of steel sabo facilities in Japan, INTERPRAEVENT 2004, VII/253-264, 2004

Takanashi, K., S.Tabata, T.Mizuyama, N.Tsuzuki; Developing and applying the system to set areas automatically, where need to take warning against sediment-related disasters, INTERPRAEVENT 2004, VII/325-336, 2004

Takemoto,H.,S.Sugihara,T.Sato,Y.Araki,T.Nkayama,T.Mizuyama,K.Furukawa; Astudy on setup of the risk of debris dlow on rough set theory, JJSECE（Journal of the Japan Society Erosion Control Engineering） 57-2,p.4-15, 2004

Kosugi, K., D. Tsutsumi, T. Mizuyama and S. Hasegawa; Combined penetrometer-moisture probe for measuring water content distribution in hillslope, JJSECE 57-3,p.3-13,2004

Kosugi, K.; Modeling of rainwater infiltration and discharge at forested hillslope, J. Japan Soc. Erosion Control Engineering, 57-3, 71-79, 2004

Mizuyama,T.;Sabo dams with shutters and shutter operating information system, JJSECE 57-4,p.66-67,2004

Uchida, T., Y. Asano, T.Mizuyama and J.J. McDonnell; Role of upslope soil pore pressure on lateral subsurface storm flow dynamics, Water Resources Research, vol.40-W12401, 2004

Muhammad Mukhlisin, K. Kosugi and T. Mizuyama; Temporal and spatial variations in the probability of debris flow initiation in volcanic watersheds, JJSECE　7-5, 3-14,2005

Usuki,N., Y. Tanaka and T.Mizuyama; Investigation on the distribution of long traveling landslides, Journal of JSECE 57-5,p.47-52, 2005

Nishiguchi, Y., T.Uchida, T.Mizuyama and K.Kosugi; An observation of spatial pore water pattern in a mountain hollow, J.JSECE 57-5,53-58, 2005

Fujita, M. and T. Mizuyama: A diffusion equation of suspended load with a source term and its application,　J.JSECE 57-6,3-12, 2005

Satofuka, Y. and T. Mizuyama: Numerical simulation on debris flow control by a grid dam, J.JSECE 57-6,21-27,2005

KATO,Y., T. Miyano, T. MIZUYAMA: Outburst of a small landslide dam on the Imokawa River(prompt report) 、J.JSECE　57-6,47-50, 2005

MIZUYAMA,T., M. Watari, O. Watanabe, A. Ikeda and Y. Satofuka: Collection and application of hydrologic information for sabo management、J.JSECE　57-6,56-59,2005

Reviews

Mizuyama,T.; Introduction to Sabo Engineering (8) Steel sabo strucures, Sabo and Chisui 157、37-1、69-71, 2004

Mizuyama,T.; Introduction to Sabo Engineering (9) Debris flow, Sabo and Chisui 158、37-2、66-68, 2004

Mizuyama,T.;　Introduction to Sabo Engineering (10) Sabo hill-side works, Sabo and Chisui 159、37-3、93-94, 2004

Mizuyama,T.; Survival rooms from sediment hazards, J.JSECE, 57-3, 82, 2004

Mizuyama,T.; Introduction to Sabo Engineering (11) Volcanic sabo, Sabo and Chisui 161、37-5、81-83, 2004

Mizuyama,T.; Introduction to Sabo Engineering (12) Sabo soil cement, Sabo and Chisui 162、37-6、81-83, 2004

Mizuyama,T.; Introduction to Sabo Engineering (13) Woody debris control, Sabo and Chisui 163、38-1、????, 2005

Mizuyama,T.; Introduction to Sabo Engineering (14) Landslide dams, Sabo and Chisui 164、38-2、111-114, 2005

Kosugi, K.: Scientific evaluation of forest function as dam, Suirikagaku, 281, 18-31, 2005.

Hayashi, S., S. Tsuchiya, K. Kondo, H. Shibano, S. Numamoto, K. Kosugi, T. Yamakoshi and A. Ikeda, Sediment related disasters caused by typhoon Meari (T 0421) in Miyagawa village, Mie prefecture on September 29, 2004 (prompt report), J. Japan Soc. Erosion Control Engineering, 57-4, 48-55, 2004

b) Conference and seminar papers presented

The 115th annual meeting of Japanese Forestry Society (6 presentations)

2004 annual meeting of Japan Society of Erosion Control Engineering (20 presentations)

2004 annual conference of Japan Society of Civil Engineers (2 presentation)

IUFRO workshop on forest hydrology (2 presentation)

A-3. Off-campus activities

Membership in academic societies(roles)

Mizuyama, T.: Japan Society of Erosion Control Engineering (director, vice president), Japanese Geomorphological Union (member of committee), Japan Society of Revegetation Technology (councilor)

Satofuka, Y.: Japan Society of Erosion Control Engineering (member), Japan Society of Civil Engineering (member), Japan Society for Natural Disaster Science (member)

Kosugi, K.: Japan Society of Erosion Control Engineering (member), Japanese Forestry Society (member), Japan Society of Revegetation Technology (member), Japan Society of Hydrology & Water Resources (member)

Research grant

Monbusho research grant:

General scientific research (A) International; Taiwan 1999 earthquake (Mizuyama), General scientific research (B)(2); Joint Research on control of floods and sediment movement in Semalang, Brantas and Toba Basins (Fujita and Satofuka), General scientific research(C)(2); Sediment Run-off from sabo dams and its impact on river environment (Head: Fujita, Mizuyama), Encouragement (B); Real-time prediction of sediment disasters using high resolution rainfall data (Head: Satofuka) , General scientific research (B)(1); A new hydrology model for small forest watersheds by considering water movement in weathered rocks (Head: Kosugi)

A-4. International cooperations and overseas activities

International Meetings

Mizuyama,T.: Interpraevent (Chairman, Presentation)

Satofuka, Y.: 13th Congress of APD-IAHR, Singapore (Presentation)

Kosugi, K: IUFRO workshop on forest hydrology (Presentation)

Membership in international academic societies

Mizuyama, T.: IAHR, IAHS, IUFRO-J, International INTERPRAREVENT, International Erosion Control Association

Satofuka, Y.: IAHR

Kosugi, K.: SSSA, IAHS, IUFRO-J

International joint researches, overseas research surveys

Mizuyama, T.: Research on erosion in sediment movement after the 1999 eathquake (Taiwan)

Satofuka, Y.: Joint Research on control of floods and sediment movement in Semalang, Brantas and Toba Basins (Indonesia)

Editors of International Journals

Mizuyama, T.: Editor of Journal of Hydrological Sciences

B. Educational Activities (2004.4-2005.3)

B-1. On-campus teaching

a) Courses given

Undergraduate level: Regional Environment Creation (Mizuyama), Theory of Erosion Control 1,2 (Mizuyama), Practice in Erosion Control (Mizuyama, Fujita), Planning of Erosion Control (Mizuyama, Fujita), Foreign Literature in Forestry 3 (Mizuyama, Fujita), Practice of Surveying (Fujita), Special Seminar on Erosion Control 1,2 (Mizuyama, Fujita), Science of Water, soil and vegetation (Fujita)

Graduate level: Theory of sediment induceddisaster control(

Satofuka), Advanced theory of Erosion Control (Mizuyama), Advanced experiment of Erosion Control (Mizuyama, Satofuka), Seminar of Erosion Control (Mizuyama, Satofuka)

B-2. Off-campus teaching, etc.

Part-time lecturer

Mizuyama, T.: Fac. Agriculture, Kyoto Prefectural Univ. (Materials and constructive methods), Japan International Co-operation Agency (Infrastructure)

Extension Lecture

Kosugi, K.: Forest and Culture

B-3. Overseas teaching

Students from abroad: 2 (Indonesia, Taiwan)

Researchers from abroad: 1 (Czech)