Earthquakes Response Analysis of CO 2 Storage Site Using Hydraulic-Mechanical Coupled Analysis by NMM

12 Pages Posted: 8 Apr 2021

See all articles by Shigeo Horikawa

Shigeo Horikawa

Suncoh Consultants Ltd.

Takeshi Sasaki

Suncoh Consultants Ltd.

Tsutomu Hashimoto

Suncoh Consultants Ltd.

Kinichiro Kusunose

National Institute of Advanced Industrial Science and Technology (AIST) - Geological Survey of Japan (GSJ)

Ryota Hashimoto

Hiroshima University

Date Written: April 6, 2021

Abstract

We perform a hydraulic-mechanical coupling analysis using the Numeric Manifold Method (NMM) to study the seismic response of fluid saturated layers at depth. Effect of strong seismic wave on stability of a CO2 storage site is one of the most important natural phenomena in a seismic active region like Japan. The safety factor response was evaluated using the effective stress determined by hydraulic-mechanical coupling analysis by the NMM. In this paper, we explain the fundamental formulation of the hydraulic-mechanical coupling analysis and examine a simple three-layer model with 4Hz sinusoidal seismic acceleration (maximum 200gal). The safety factor response obtained by effective stress decreases that by total stress. The results are reasonable and the analysis obtained can be very effectively applied.

Keywords: Hydraulic-Mechanical Coupling, NMM, Discontinuous planes, Earthquakes response analysis

JEL Classification: C53

Suggested Citation

Horikawa, Shigeo and Sasaki, Takeshi and Hashimoto, Tsutomu and Kusunose, Kinichiro and Hashimoto, Ryota, Earthquakes Response Analysis of CO 2 Storage Site Using Hydraulic-Mechanical Coupled Analysis by NMM (April 6, 2021). Proceedings of the 15th Greenhouse Gas Control Technologies Conference 15-18 March 2021, Available at SSRN: https://ssrn.com/abstract=3820856 or http://dx.doi.org/10.2139/ssrn.3820856

Shigeo Horikawa (Contact Author)

Suncoh Consultants Ltd. ( email )

189 Kameido Koto-ku
Japan, 136-0071
Japan

Takeshi Sasaki

Suncoh Consultants Ltd. ( email )

189 Kameido Koto-ku
Japan, 136-0071
Japan

Tsutomu Hashimoto

Suncoh Consultants Ltd.

189 Kameido Koto-ku
Japan, 136-0071
Japan

Kinichiro Kusunose

National Institute of Advanced Industrial Science and Technology (AIST) - Geological Survey of Japan (GSJ)

1-1-1 Higashi
Tsukuba, Ibaraki
Japan

Ryota Hashimoto

Hiroshima University

739-0046
Japan

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