Study on the hydro-mechanical characterization of the calcareous concretion from Hayama Group

Satoshi Goto; Shinji Takeuchi; Sachiko Nakamura; Hidekazu Yoshida

Presentation information

[J] Oral

H (Human Geosciences ) » H-CG Complex & General

[H-CG24] Nuclear Energy and Geoscience

Mon. May 23, 2022 10:45 AM - 12:15 PM 301A (International Conference Hall, Makuhari Messe)

convener:Shinji Takeuchi(Department of Earth and Environmental Sciences, College of Humanities & Sciences, Nihon University), convener:Takuma HASEGAWA(Central Research Institute of Electric Power Industry), Eiji Sasao(Tono Geoscience Center, Japan Atomic Energy Agency), Chairperson:Eiji Sasao(Tono Geoscience Center, Japan Atomic Energy Agency), Taiki Kubo(Graduate School of Engineering, Kyoto University)

11:00 AM - 11:15 AM

[HCG24-08] Study on the hydro-mechanical characterization of the calcareous concretion from Hayama Group

*Satoshi Goto¹, Shinji Takeuchi², Sachiko Nakamura³, Hidekazu Yoshida³ (1.Graduate School of Integrated Basic Sciences, College of Humanities and Sciences Nihon University, 2.Department of Earth and Environmental Sciences, College of Humanities and Sciences Nihon University, 3.Nagoya Univercity)

Keywords:concretion, sealing function

Concretions are hard rocks made of carbonate and other materials. In this study, we have analyzed the hydrological characteristics such as porosity and hydraulic conductivity, and rock mechanical characteristics on hardness distribution of carbonate concretions in the Neogene Hayama Group Kanagawa Prefecture. As a result, it has been confirmed that the concretions have less porosity, hardness and low hydraulic conductivity than those of the host rock. Furthermore, mechanical characteristics of the inner part of the concretion has been harder and denser than that of the outer part.