Kyoto University · 공학
이 교수의 연구실은 깊은 광산 환경에서 발생하는 지진 및 암반폭발 위험을 정량적으로 평가하고 제어하기 위한 고도화된 수치모델링과 물리적 메커니즘 분석에 중점을 두고 있습니다. 주요 연구 방향은 광산 유도 응력, 단층의 공진진 변위, 파손 동역학 및 응력 집중 현상에 기반한 섬유질 에너지 분포와 위험 평가입니다. 특히, 근접 단층 환경에서의 동적 응답 및 파동 반사 효과를 고려한 3차원 동적 모델링 기법을 핵심으로 삼고 있습니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Abstract Shear strain energy is a pivotal physical quantity in the occurrence of earthquakes and rockbursts during deep mining operations. This research is focused on understanding the changes in shear strain energy in the context of retreating longwall mining, which is essential for the optimized design and mitigation of rockbursts and seismic events. Through the application of innovative analytical models, this study expands its analytical range to include the variations in shear strain energy
Assessing the risk of fault-slip rockburst is crucial for ensuring the safety of mining operations and effectively mitigating potential disasters. In this study, we propose an integrated 3-D numerical modeling framework combining the virtual fault (VF), 3-D Mohr–Coulomb criterion model (MC), and slip weakening model (SW) to investigate the dynamics of fault failure and coseismic slip induced by mining activities near faults. Our research focuses on the fault stress ratio (k) and how it responds
This study presents a comprehensive numerical analysis of dynamic rupture and fault-induced seismic risks in deep roadway excavation environments, focusing on near-fault conditions. A quantitative assessment was conducted for faults within 5 m of the roadway, a critical range for evaluating heightened seismic risks. Our results demonstrate that within this proximity, fault slip and seismic moment increase significantly, with peak fault slip reaching 17.1 mm and seismic moment exceeding 3.9 × 10<
Shear strain energy, a critical factor in the occurrence of earthquakes and rockbursts, plays a vital role in deep mining operations. This study investigates the spatial distribution of shear strain energy (E<sub>s</sub>) in mining-induced fault coseismic slip and its implications for rockburst risk assessment, offering a novel perspective. We thoroughly explore the dynamics of E<sub>s</sub>, which are critical to seismic activity and rockburst phenomena in deep mining operations. By integrating
Seismic hazards induced by deep roadway excavation pose serious threats to underground stability, especially in ultra-close fault environments. To address this, we propose a fully coupled three-dimensional (3D) dynamic modeling framework that resolves excavation-induced stress changes, fault rupture, and seismic wave propagation at near-source resolution. The model quantitatively captures excavation-induced dynamic instability via coseismic slip and seismic moment. Parametric analyses show that
With the progressive depletion of coal resources, the recovery of shaft pillars has become an important means of improving resource utilization and reducing waste. Taking the main shaft pillar recovery of the Longxiang Coal Mine at the stage of mine closure as the engineering background, this study systematically investigates ground subsidence prediction and shaft stability control under strip mining with symmetrical extraction. An improved subsidence prediction model was established by integrat
