◆A research group led by Professor Tadashi Hara of the Department of Science and Engineering has compiled its research findings and published the "Manual for the Design and Construction of Steel-Reinforced Reservoir Embankments."
Release Date:
Manual Explaining Design Procedures and Construction Methods for Reinforcing Reservoir Embankments with Steel Released
On November 14, 2025, the National Agriculture and Food Research Organization (NARO) published the "Design and Construction Manual for Steel-Reinforced Reservoir Embankments" on its website as the result of a joint research project with Professor Tadashi Hara of the Department of Science and Engineering at Kochi University, Nippon Steel Corporation, and Eight Japan Technology Development Co., Ltd.
With the enforcement of the Act on Special Measures for Promoting Disaster Prevention Works Related to Priority Agricultural Reservoirs (Note 1), reservoir renovation projects are being carried out in a systematic and concentrated manner nationwide. This manual systematically organizes and generalizes the design procedures and construction methods for reinforcement techniques that improve water-tightness and seismic resistance by driving steel sheet piles or steel pipes into the reservoir embankment.
This enables the efficient and reliable design and construction of the "double-sheet pile method," thereby contributing to improved safety in reservoirs.
・You can view this manual (PDF) at the URL below.
■Design and Construction Manual for Reinforcing Reservoir Embankments with Steel Materials
(Note 1) Agricultural reservoirs designated as disaster prevention priority sites
Reservoirs where the presence of houses, public facilities, or other structures within the potential flood zone in the event of a breach poses a risk of human casualties or other harm. As of the end of March 2025, 52,380 such reservoirs have been re-designated (Source: Ministry of Agriculture, Forestry and Fisheries website ).