第三次調査団現地調査報告会［5/30］（2025年6月4日更新）

令和6年能登半島地震 第三次調査団現地調査報告会がメディアの森ホールで行われました。オンラインを含め約100名超が参加されておりました。 メディアも第一回、第二回に比べて多くが駆け付けたと感じており、被災後の復旧・復興について高知県内外から関心が高いことがよく分かりました。
被災直後に速報ベースで包括的な調査報告は良く耳にしますが、今回のような継続調査の報告は少なく、教訓を活かすためにも重要な取り組みだと認識しました。 特に、市民生活に必要な公共インフラは一年経った今も限定的な復旧に留まっており、街の復興が見通せず人口流出が続いていることは、足下でも人口減少が進んでいる地域にとって深刻な課題と感じました。
今回のような官学連携により、「事前復興」に向けて高度かつ実務的に反映がされる重要な取り組みだと思います。高知の防災力向上に向けてご尽力された原先生、高知県庁皆様に敬意を表するとともに、 被災地の皆様が早期に日常生活を取り戻せることをお祈りいたします。（D2　山崎）

Attending the Noto Earthquake Report Meeting on 30 May 2025 was an enlightening experience for me. The presentations provided a comprehensive overview of the damage patterns, seismic behavior, and recovery challenges of the Noto Earthquake 2024. Particularly during this meeting, Prof. Hara and the team presented the field investigation results, which provide insights into the mechanisms of failures, liquefaction, and infrastructure collapse in the affected region. I am impressed by the multidisciplinary approach taken by the reporting and surveying teams. Engineers, seismologists, urban planners, and local government representatives collaborated closely, demonstrating the importance of integrated disaster response and research. As a researcher, I renewed sense of purpose and several new ideas for collaborative studies, particularly resilient infrastructure design for rural areas. I was particularly impressed by the clarity of the data presented, including seismic wave analyses, field survey results, and community response strategies. Professor Hara did an excellent job of bridging technical findings with broader societal implications, which helped attendees from both academic and non-academic backgrounds engage meaningfully with the Earthquake disaster. I look forward to attending future sessions and hope to learn more about interdisciplinary cooperation for disaster response and community resilience in disaster-prone areas. （D1　Mukesh Pathak）

On May 30th, Kochi University hosted an impressive and insightful workshop at the Media Hall, focusing on the onsite investigation of the Noto Peninsula Earthquake, 2024. This marked the third dissemination of findings from the site investigations. The workshop was led by Professor Hara, the team leader of the investigation group, who presented a comprehensive and technically detailed report on the damage to infrastructure and the occurrence of landslides caused by the earthquake.
I had the opportunity to attend this session, as well as the first and second investigation workshops. Each has been an invaluable learning experience for me. The event drew significant attention, with approximately 100 participants attending in person and many more joining online. Among the attendees were senior officials from Kochi Prefecture, members of the media, academics, experts, and members of the general public.
I understand that the workshop was also featured in a breaking news segment on the national broadcaster NHK, highlighting the importance and public interest surrounding the event. The level of media coverage and public engagement reflects the significance of the investigation findings and the idea of Prof Hara.
I feel fortunate to have been able to attend this workshop and to gain firsthand insight into the technical aspects of the investigation and the broader impacts of the earthquake. I would like to express my sincere appreciation to Professor Hara for his hard work and for delivering such a thorough and impactful presentation. （D3　Suresh, M2　Rachana）

第2回研究室ゼミ［5/27］（2025年5月29日更新）

I had a great and memorable day attending the seminar on 27 May 2025 at Kochi University Geotechnical Engineering Lab, where our lab members presented and highlighted progress and unique perspectives in their ongoing research in the presence of Pro. Hara. It was a great opportunity to exchange ideas, ask questions, and receive valuable feedback from the professor and lab friends. Everyone was genuinely interested in each other's research, offering suggestions and encouragement. Sensei is allowing us to speak freely with his guidance and feedback. I appreciated the collaborative atmosphere among the lab family and the encouragement from Sensei. We concluded this seminar by discussing upcoming research and potential opportunities for conference presentations and journal publications.
After the seminar, we continued the evening with a dinner party at the famous Kochi Izakaya Dining Restaurant, which was relaxing and fun. Sharing Japanese food and drinks was really enjoyable and set a bond more personally with each other. It was a great such a pleasure meeting with Kitazawa San, Sugihara San, and Ishihara San and sharing great conversations with delicious food. It was heartwarming to see everyone enjoying the moments. The professor was very approachable, and it was a rare chance to get to know him beyond the classroom and lab.
Overall, the seminar and dinner party were perfect reminders to me. I feel more motivated and connected to the lab members, and I’m looking forward to the next event like this. (D1 Mukesh Pathak)

D2溝渕です。5月27日　高知大学にて第2回研究室ゼミに参加いたしました。自分は来月の国際会議での発表を控えていながら準備不足で散々な内容でしたが、原先生をはじめ皆様が深い内容の質問を与えてくださり多くの示唆を頂きました。 原先生のご指導を頂くことと共に同じ研究室の皆様のご活躍や研究に励む様子を拝見できることもとても大きな財産であると痛感しています。そして懇親会では、久々に3次会まで突入。皆様のパワーに引っ張られて、 ごくわずかですが若返って帰京いたしました。

Nepal visit From May 19 to 25　［5/19］（2025年5月29日更新）

From May 19 to 25, 2025, our team—including Prof. Dr. Tadashi Hara and myself—visited Nepal to observe the constructed gabion structures in Khaniyabash Municipality, Dhading, and to assess a new construction site in Shivapuri Municipality, Nuwakot.
During our visit, we conducted horizontal and vertical deformation assessments at the Ankhu Khola riverbank protection site in Khaniyabash Municipality. It was a productive and memorable experience. This typical research site of Mr Mukesh Pathak.
Prof Hara was honored by the warm hospitality extended to us. In particular, Prof. Dr. Durga Prasad Sangraula, Principal of Advanced Engineering College (IoE, Tribhuvan University), Nepal, formally recognized Prof. Dr. Hara for his significant contributions to disaster risk management in Nepal.
On May 22, 2025, Prof. Hara had the privilege of meeting with Hon. Mr. Shankar Bhandari, Member of Parliament and Minister of Forest and Environment, and Hon. Mr. Dil Man Pakhrin, Member of Parliament and former Minister of Law and Administration. They had a fruitful discussion on the long-standing friendship between Nepal and Japan. The ministers expressed appreciation for Japan’s support in Nepal’s development and commended Prof. Hara’s contributions to disaster risk reduction technologies and to supporting Nepalese students in pursuing higher education. The ministers also expressed their commitment to further collaboration and to engaging senior government officials in support of Prof. Hara’s initiatives during future visits.
Additionally, Prof. Hara had meaningful discussions with senior officials of the Department of Water Resources and Irrigation, including the Director General (DG) and Deputy Director General (DDG), to explore opportunities for further collaborative research in disaster risk reduction technologies. Furthermore, Prof Hara had a very good time with JICA officials Mr Onoue and his team.
Prof. Hara also visited the proposed project site in Shivapuri Municipality. The Mayor and senior municipal officials warmly welcomed him and expressed their support for the planned implementation of flood risk management initiatives using gabion technology. They affirmed their commitment to collaborate in executing the project.
Prof. Hara returned to Japan with fond memories and renewed inspiration, carrying new ideas to enhance disaster risk prevention efforts for the benefit of the people of Nepal.(D3 Suresh)

第2回防災工学実験［4/24］（2025年4月28日更新）

本年度から秘書を務める岡林と申します。原先生の担当される実験を拝見しました。最初は学生さんも少し緊張していた様子でしたが、実験後半になると和気あいあいと楽しそうに実験していて、 ほほえましかったです。私は人文学部出身ですので、こういった実験を目の当たりにするのは初めてで、とても新鮮でした。それと同時に、学生の頃を思い出して懐かしかったです。 貴重な実験に参加させて頂いて、ありがとうございました。（岡林）

Working as a Teaching Assistant in the Kochi University Geotechnical Engineering Lab under the guidance of Professor Tadashi Hara has been an enriching and transformative experience. I, Suresh San (D3) and Agra San(M2) were responsible for assisting in the preparation and execution of various soil mechanics experiments, such as particle size distributions (PSD), water content, and density of soil samples. This role helps me to deepen my theoretical understanding of soil mechanics through practical application and to develop strong skills in laboratory safety, data collection, and reporting. We also helped Bachelor's students to interpret experimental results, maintain lab safety protocols.
Working alongside a dedicated Hara Sensei not only enhanced my technical skills but also I gained deeper insights into advanced testing procedures and learned the importance of observation and quality control in geotechnical analysis. I also had the opportunity to mentor undergraduate students, explain fundamental concepts, and guide them through hands-on lab activities, which improved my communication skills.
Overall, this assistantship strengthened my technical foundation and inspired a deeper interest in geotechnical research and professional practice. (D1 Mukesh Pathak)

B4の丸山です。工学実験のお手伝いに参加させていただきました。3年生の皆さんがはじめは上手く作業が進まなくて少し不安そうな感じでしたが、だんだん土の選び方やランマーの打ち方がわかっていくと面白くなっていって作業に熱中している姿が見られました。 3年生の皆さんが積極的にそして丁寧に作業されていて素晴らしかったです。この姿勢を自分を見習わないといけないなと思いました。この実験を通して少しでも地盤工学研究室に興味を持ってくれた方がいたら嬉しいです。（B4　丸山）

CLT周辺地盤掘り出し調査［4/22-23］（2025年4月25日更新）

B4の丸山です。4月23日に広島県三次市での地盤調査に参加させていただきました。実際に現場で作業させていただく機会はこれで3回目となりましたが、 自分の現場での行動の仕方にまだまだ考えが足りない部分が多いと感じました。特に今回はコアを採取する範囲が狭かったため、上手くサンプリングの条件を揃えることことを考えながらサンプルを採取することが難しかったです。 また溝渕さんに実際に実物を見ながらCLT試験対体の変化の様子についてもご教授いただき、より理解を深めることができました。この経験をもとに今後も勉強に励みたいと思います。ありがとうございました。

D2の溝渕です。4月22･23日の日程にて、木質材料（CLT）の地盤環境での耐久性を検証するための、地盤サンプリングを行いました。原先生のご指導のもと、学部4年生の丸山さんと3人での調査でした。 宮崎県都城市に位置する「宮崎県木材利用技術センター」、広島県三次市に位置する「広島県立総合技術センター林業技術センター」の2か所で、木材のスペシャリストの皆様に御力を拝借して、 無事に採取が終わりました。両センターは、木質材料の材料試験、構造実験において日本を代表する名門機関です。現在、（一社）日本CLT協会様の主幹にて、両機関でCLTの地中での暴露試験が行われています。 今回のサンプリングにより、各地の地盤の特性を確認し、地盤環境下でのCLTの耐久性をさらに細かく分析することを想定しています。そのために、今後、採取した土の含水比、粒度、液塑性限界、 密度等について、丸山さんがデータを取得してくださいます。原先生が事前にご指導くださった採取計画、採取の手法に従い、何とか無事にサンプリングが終えられましたのは、原先生の適確なご指導、 丸山さんのサンプリングでの素晴らしい働きはもちろん、両センターのスペシャリストの皆様が、お忙しい中、私達のために貴重な時間を割いてご指導くださったおかげです。どのような実験も、研究データの取得も、 すべて温かくご指導を頂き、助けて頂き、多くの方に見守って頂き、はじめて成し得ることを改めて思い知る2日間となりました。関わってくださったすべての皆様に感謝いたします。

Visit to a construction equipment manufacturing company［4/11］（2025年4月14日更新）

On April 11, 2025, Prof. Harai led an inspiring field visit to Marutaka, a renowned Japanese machinery manufacturing company located in Kochi. Under Hara Sensei’s guidance, we engaged in meaningful discussions with the company’s engineers and managers, gaining deeper insights into the practical applications of theoretical knowledge with real-world applications. During this visit, I was exposed to the disaster mitigation machinery product. The experience not only enhanced my understanding of advanced machinery design and technology but also highlighted the importance of precision, discipline, and innovation in manufacturing. Prof. Hara always emphasized the importance of such hands-on experiences in bridging the gap between academic theories and real-world applications. This field visit significantly enriched my academic journey and offered us a glimpse into the practical side of engineering.（D1 Mukesh）

On Monday, April 11, 2025, our lab members—Hara-sensei, Mukesh, Maruyama, and I—visited the Kokubu River, located south of Kochi University School of Medicine in Nankoku City. The visit was organized at the invitation of Mr. Hiroshige Takano from KOCHI MARUTAKA Company to attend a field demonstration of their newly developed excavation machine. This machine is designed for disaster prevention and is capable of operating in diverse and challenging conditions, including snow-covered terrain, soft ground, boulder-filled areas, and submerged environments requiring dredging. The site visit took place from 1:30 PM to 4:30 PM. The demonstration was particularly meaningful for us, as we have been engaged with the project since its early development phase. KOCHI MARUTAKA has also expressed strong interest in launching this machine in Nepal, where it could serve a critical need.
Nepal, with its mountainous terrain and numerous rivers, faces significant challenges during the monsoon season. Annual floods carry large volumes of debris, reducing river capacity and increasing the risk of inundation, especially in major cities such as Kathmandu and Pokhara. The floating, vertically adjustable nature of this machine makes it highly effective for clearing debris from rivers and lakes, providing a promising solution for these issues. During the recent visit of the KOCHI MARUTAKA team to Nepal, there was notable interest from government stakeholders, particularly the Department of Water Resources and Irrigation and Pokhara Metropolitan City. The Mayor of Pokhara has shown a strong willingness to procure the machine, recognizing its potential to greatly enhance urban flood management efforts.
Given its applicability and effectiveness, I strongly recommend that KOCHI MARUTAKA develop a formal mechanism to introduce and launch this excavation machine in Nepal. It represents a valuable tool for sustainable river management and disaster risk reduction in the region. Lastly, I would like to express my sincere gratitude to Hara-sensei for organizing this insightful field trip and connecting us with KOCHI MARUTAKA.（D3 Suresh）

B4の丸山です。水陸水上作業車の見学に参加させていただきました。参加の案内をいただいたときに水陸氷上作業車とは果たしてどんな作業車なんだろうと興味をもち参加させていただきました。 この作業車は軟弱土や氷上など様々な条件の場所で作業が行えるとのことで災害現場や雪処理など一台で様々な場所での活用ができる点に魅力を感じました。参加させていただき、ありがとうございました。（B4　丸山）

シンガポールでの再会［3/27］（2025年4月14日更新）

　先月、研究室OBで大学院を修了した基礎地盤コンサルタンツ（株）シンガポール事務所に勤務する畑山諒人君とお会いする機会があり、職場を拝見しました。ご本人から丁寧なコメントを頂戴しました。（原）

　この度、弊社のシンガポール事務所にお越しいただき、誠にありがとうございました。学生時代から多大なるご指導を賜り、その教えを今も大切にしている私にとって、 再度お会いできたことは非常に嬉しく、また貴重な時間となりました。
　シンガポール試験室の視察においても、原先生からいただいたアドバイスは、常に私の業務に新たな視点をもたらしてくれました。特に、シンガポールの土試料に対する特殊試験について、 具体的な試験方法を改めて深く考える貴重な機会となりました。学生時代に教授から学んだことを、現在の業務にもしっかりと活かし、現地のスタッフにもその知見を共有していきたいと強く感じています。 この貴重な機会を通じて、シンガポール試験室のさらなる成長に貢献できるよう努めていきます。
　今後も、教授から頂いた教えを現地スタッフに伝え、さらに多くのことを学び続けていきたいと考えています。改めて、教授に感謝申し上げるとともに、今後ともよろしくお願い申し上げます。
　また、久しく高知のカツオを頂いておりませんので、次回の機会にはぜひ高知にも足を運びたいと考えております。その際は、どうぞよろしくお願い致します。（OB　畑山）

久しぶりの研究室訪問［4/4］（2025年4月9日更新）

　原研究室OBの西村です。4/4に弊社（株式会社エイト日本技術開発）の会社説明会を開催していただきました。 当初は30分程度の説明会を予定していましたが、説明会途中に多くの質問をいただき、最終的には1時間以上となりました。積極的に質問する学生さんの姿勢が素晴らしく、 私も見習わなければいけないなと気が引き締まるような説明会でした。今回の説明会が、少しでも弊社に興味を持っていただける機会となれていれば幸いです。
　また、夜は懇親会に参加させていただきました。原先生と2人きりでお酒をいただく機会が初めてで少し緊張していましたが、研究室の思い出話をしているうちに、 時間があっという間に過ぎていました。社会人としてのご助言もいただくことができ、大変有意義な時間を過ごすことができました。
　この度は貴重な機会をいただきありがとうございました。今後ともよろしくお願いいたします。（OB　西村）

花見パーティ at 高知城［4/1］（2025年4月4日更新）

On April 1, 2025, the Hara Lab family gathered at Kochi Castle to celebrate the arrival of spring with a joyful Hanami Party. The cherry blossoms were in full bloom, creating a breathtaking backdrop for an afternoon filled with laughter, good food, and warm company.
As a member of the Hara Lab family, I was truly delighted to be part of this special moment. We shared a variety of delicious dishes such as yakitori, karaage, sushi, onigiri, and many more. But what made the day truly special was not just the food. It was the stories, the laughter, and the connection we shared under the blooming sakura trees.
This gathering was not just a seasonal tradition. It was a beautiful reminder of the bond we share as colleagues and friends. We enjoyed lighthearted chats, exchanged fun stories, and even had some deep conversations that made time pass quickly. It was a moment that captured the warmth and togetherness we all cherish in Hara Lab.
A heartfelt thank you to Professor Tadashi Hara for organizing such a memorable event and for always creating a warm and inclusive atmosphere. I am looking forward to more wonderful memories with this amazing lab family. (D1 ファウザン)

On the 1st of April, 2025, we had the pleasure of experiencing a truly wonderful Hanami party at the historic and beautiful Kochi Castle. It was a memorable evening filled with joy, laughter, and togetherness. All the Hara Lab members were present, including our respected Hara Sensei, which made the gathering even more special. The party officially began at 17:00 and continued until 20:30, giving us plenty of time to enjoy the breathtaking views, delicious food, and the lively atmosphere.
The entire area surrounding the castle was beautifully illuminated, with colorful lights and decorative arrangements that perfectly complemented the blooming cherry blossoms. The ambiance was magical—soft petals falling with the breeze, laughter echoing around, and a sense of unity in the air. It was heartwarming to see so many people and families gathered under the cherry trees, each group enjoying their little celebration of spring.
For our family, this Hanami was even more meaningful as we were able to attend together, including our daughter, Surabhi. She had a wonderful time running around, playing, and experiencing the warmth of this beautiful Japanese tradition. It was a delight to watch her joy as she marveled at the sakura blossoms and interacted with others. This cultural celebration of nature, beauty, and life is truly one of Japan’s finest, and we felt honored to be a part of it. The Hanami party at Kochi Castle will always remain a cherished memory for us (D3 Suresh).

研究室のお花見に初めて参加しました！高知でのお花見は初でしたが、桜も高知城のライトアップもとても綺麗で、今までなぜ見に行かなかったのかと後悔しました。 新年度にむけてまた気持ちを新たにすることができました。(B4 丸山）

The hanami party was held on 1 April 2025 with Prof. Hara and lab friends. This was a memorable and very delightful experience at the historic Kochi Castle. Cherries in bloom brought all of us under their umbrella of beauty, heralding the arrival of spring. The hanami party is the first and new for me. I was so excited about the gathering. We managed the delicious dishes and drinks for the party.
This blooming background of sakura was perfect to create bonding, sharing the beauty of nature's ephemerality and the collective spirit of a lab family. The hanami party turned into an unforgettable celebration both of nature and of friendship. It was a great experience to appreciate the beauty of the cherry blossoms in such warm and friendly company.
Thanks very much to Sensei for his generous conduct and for giving me the chance for this hanami party. Not only did it help remove the stress but it also greatly furthered the connections between humans to look forward to more challenges. More than just a party for a specific time of year, this hanami party is a heartfelt way to express the unity in our lab family: a day when the boundary between Sensei and student is made invisible, all of us uniting together to make memories that will inspire us in our professional and personal lives. (D1 Mukesh Pathak)

On April 1, 2025, I joined the Hara Lab Hanami Party at Kochi Castle for the second time. The cherry blossoms were stunning, and the atmosphere was even more special this year with new members, including PhD and undergraduate students, as well as a friend from Indonesia who joined us. We enjoyed delicious food, great conversations, and lots of laughter under the sakura trees. I truly felt the warmth and connection of the Hara Lab family. Big thanks to Professor Tadashi Hara for organizing this beautiful gathering. I’m so happy to be part of this lab and look forward to more memories ahead!(M2 Agra)

On April 1, 2025, we held a Hanami party with the Hara Lab students at Kochi Castle. The event was attended by 10 people in total, including 7 from Hara Lab, 1 from Sasahara Sensei's lab and my daughter. The party was a lot of fun, and we stayed at the location from 5 PM to 9 PM. Despite the slightly chilly weather, the warmth of the atmosphere and the positive vibes kept us all feeling cozy and happy. I would like to express my gratitude to our professor for organizing such events regularly, which help us stay connected in many meaningful ways.(M2 Rachana)

4/1、高知城内の広場にて花見パーティーに参加させて頂きました。
「高知城で酒が飲める！？」と胸を躍らせていましたが、数年ぶりに目の当たりにする階段地獄によって一瞬にして 胸の高鳴りは収まり数分後には動悸が激しくなりました。心肺の衰えを感じながらもなんとか登り切ると、城と桜と提灯が画角に収まる素晴らしい光景が広がっていました。 時間は進み各々が持ってきた美味しい食べ物やお酒を楽しんでいると、高知城が綺麗な紫色にライトアップされ始めました。城の中での宴会•ライトアップされた高知城•エビス缶ビールの美味さ、 どれもが初めての体験であり自分を新鮮な気持ちにさせてくれました。
研究室に仮配属されてから約8ヶ月になります。経験を積むにつれ得るものは多くなっていきますが、その一方で良くも悪くも「慣れ」が生じてしまう恐れもあります。 配属当初に感じていた新鮮さを大切にしながら「初心忘るべからず」の心構えで今後も精進していこうと思います！(B4 山口）