Design and Management of Environmental Infrastructures

Design and maintenance of the natural ground and geo-structures included in the social infrastructures are studied here. Especially, the water storage facilities as the dams and the headworks are focused on. Related to the objects, the ways of the laboratory and the in-situ tests and the simulation technics are developed.

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	Prof. NISHIMURA Shinichi E-mail: theg1786 [at] cc.okayama-u.ac.jp geotechnical engineering/irrigation and rural engineering   Directory of Researchers

I have studied the geohazards. Particularly, the risk evaluation approach has been studied for the diagnostics and the maintenances of the aged and deteriorated earth-fill dams against the breaching caused by the earthquakes and heavy rains. Related to the approaches, ground survey and the simulation techniques are developed here. (Shin-ichi Nishimura)

	Assoc. Prof. SHIBATA Toshifumi E-mail: tshibata [at] cc.okayama-u.ac.jp) geotechnical engineering/numerical analysis   Directory of Researchers

The maintenance of damaged irrigation tunnels has become a major social concern; and thus, evaluating the damage conditions of current tunnels is of crucial importance. Voids behind the tunnel lining may be created during or after construction by the conventional method, and these voids are the main factors in its failure. Hence, it is imperative to comprehend the behaviors of the ground, the tunnel lining and the voids. This study presents model tests of the interacting behaviors between the ground and a tunnel lining with voids under loading conditions.