超高温延性領域における地熱開発のための誘発微小地震発生メカニズムの解明

超高温韧性区地热开发诱发微地震发生机制的阐明

• 批准号: 13J09170
• 负责人: 椋平 祐輔
• 金额: $ 2.76万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for JSPS Fellows
• 财政年份: 2013
• 资助国家: 日本
• 起止时间: 2013-04-01 至 2016-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-13J09170/
• 关键词: 誘発有感地震; 能動的地熱開発; 超高温延性領域; 次世代地熱開発; 熱応力; 室内岩石実験; 次世代型地熱開発

本研究は，超高温延性領域内における地熱開発時の，誘発微小地震の発生に関して岩石学・地震学の新理論を導出するとともに数値シミュレーション，室内実験等により貯留層内外での地震発生現象の解明を試みる。これにより，超高温延性領域内における能動的地熱開発時の誘発微小地震の発生可能性，発生メカニズム，有感地震発生リスク，微小地震による貯留層モニタリングの可能性を明らかにする事を目的とした。初年度，誘発微小地震発生に関わる岩石力学・地震学的理論の導出より，超高温延性領域における地熱開発時に発生すると考えられる熱応力を理解することが必要であると考えた。２年目には実験的に，超高温延性領域と同等な条件下で高温の岩体に対して注水実験等を行うことで，熱応力を再現しその現象の解明，破壊への寄与の解明に迫ることとした。そこで，モルタルで作成する模擬岩石内にあらかじめ歪ゲージを埋め込むみ，さらに引っ張りき裂を作成し，模擬既存き裂とすることで，既存き裂を含む模擬岩石試験片を用いる。さらに，高温真三軸試験器を用い，高温・封圧下にある試験片に冷却水を注入し，生じる熱歪みを直接測定しようとする実験機構を考案した。ここで計測される熱歪みから，熱応力は計算できると考えた。最終年度には，実験装置に改造を施し，高温の試験片内の歪みをモニター可能にした。引っ張りき裂を有する試験片を用いて予備実験を何度か行い透水試験を行うことに成功した。しかし，実験装置の改造，実験ノウハウの蓄積に反して，度重なる実験装置の制御系の故障・ヒータ等の基幹となる部品の損傷等によって，本期間内に明らかに有意な実験結果を得ることはできなかった。しかし，これまで蓄積してきた実験ノウハウや環境整備，更には予備実験を始めとする基礎データは，非常に価値があり，本実験の成功まであと一歩ということ所まで達成できたと言える。

In this study, in the field of ultra-high temperature ductility, the new theory of petrology and seismology has been developed in the field of ultra-high temperature ductility, and the new theory of petrology and seismology has been developed in the field of ultra-high temperature ductility in the field of ultra-high temperature ductility. The possibility of the occurrence of small earthquakes in the ultra-high temperature ductility field, the possibility of the occurrence of small earthquakes, the possibility of the occurrence of small earthquakes, and the possibility of the occurrence of small earthquakes in the field of ultra-high temperature ductility in the field of ultra-high temperature ductility. At the beginning of the year, the theory of rock mechanics and seismology in the field of ultra-high temperature ductility was developed in the early years of small earthquakes, and the field of ultra-high temperature ductility was tested in the early years. For 2 years, in the field of ultra-high temperature ductility, under the same conditions, such as "high temperature" rock mass, "water injection" and so on, the force is clear again, and the solution is forced to understand. The model is made into a model, which is made into a model, and the model is made of cracks, cracks and cracks. Under the high temperature seal, the cooling water is injected into the machine, and the test case of the machine is determined directly. The calculation of the force, the calculation of the force, the calculation of the force and the calculation of the force. In the most recent year, the equipment has been revamped, and the high temperature has caused a lot of distortion in the film. There is a good chance that the film will be used to make sure that the water is permeable. The equipment has been modified, the equipment has been rebuilt, the equipment has been installed, and the equipment has been designed to prevent the failure of the equipment, such as the failure of the equipment, and so on. In the current issue, it is clear that you are interested in getting the results. In order to improve the quality of the environment, it is very important for the equipment to prepare for the environmental protection, and this is very important for the equipment to meet the needs of the environment.

项目成果

Study for understanding of the physics behind induced seismic events with large magnitude at EGS project in Basel, Switzerland

瑞士巴塞尔 EGS 项目研究了解大规模诱发地震事件背后的物理原理

• 发表时间: 2014
• 作者: Y. Mukuhira;H. Asanuma;D. Wybone;M. Haring;M. Adachi;Y. Mukuhira;Y. Mukuhira;椋平祐輔;Y. Mukuhira;Y. Mukuhira;Y. Mukuhira;Y. Mukuhira
• 通讯作者: Y. Mukuhira

Application of the EtAs seismostatistical Model to Microseismicity From Geothermal Fields

• 发表时间: 2013
• 作者: T. Eto;H. Asanuma;M. Adachi;K. Saeki;Kengo Aoyama;Hitoshi Ozeki;Y. Mukuhira;M. Häring

Study on detailed mechanism of induced seismicity with large magnitude at EGS project in Basel, Switzerland

瑞士巴塞尔EGS项目大震级诱发地震详细机制研究

• 发表时间: 2014
• 期刊: Proc. RE2014
• 作者: Y. Mukuhira;H. Asanuma;M. Haring
• 通讯作者: M. Haring

Seismostatical modeling of earthquakes from geothermal fields

地热场地震的静震模拟

• 发表时间: 2013
• 期刊: Proc. RS2013
• 作者: T. Eto;H. Asanuma;M. Adachi;K. Saeki;K. Aoyama;H. Ozeki;Y. Mukuhira
• 通讯作者: Y. Mukuhira

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