Li Yatao, Gao Xuehong
Department of Civil and Earth Resources Engineering, Kyoto University, Kyoto, 615-8530, Japan.
School of Resources and Safety Engineering, University of Science and Technology Beijing, Beijing, China.
Sci Rep. 2025 Apr 30;15(1):15168. doi: 10.1038/s41598-025-00077-4.
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) in mining-induced fault coseismic slip and its implications for rockburst risk assessment, offering a novel perspective. We thoroughly explore the dynamics of E, which are critical to seismic activity and rockburst phenomena in deep mining operations. By integrating advanced numerical simulation techniques with observational data from the F16 fault zone, we analyze the interplay among mining distance (D), fault cohesion, and their collective impact on E variations. Our analysis reveals a nuanced understanding of E in mining induced fault slip, particularly highlighting a marked increase in E concentrations at the working face as mining approaches the fault. This observation underscores the critical influence of D on elevating rockburst risks. Additionally, we discover that enhanced fault cohesion contributes to a decrease in E, thereby mitigating rockburst risks. These insights afford a novel perspective on managing rockburst hazards in deep mining operations, offering theoretical and methodological advancements for predicting and curtailing geological hazards.
剪应变能是地震和岩爆发生的关键因素，在深部采矿作业中起着至关重要的作用。本研究调查了采矿诱发断层同震滑动中剪应变能（E）的空间分布及其对岩爆风险评估的影响，提供了一个新的视角。我们深入探讨了E的动力学，这对深部采矿作业中的地震活动和岩爆现象至关重要。通过将先进的数值模拟技术与F16断层带的观测数据相结合，我们分析了采矿距离（D）、断层凝聚力及其对E变化的综合影响之间的相互作用。我们的分析揭示了对采矿诱发断层滑动中E的细微理解，特别强调随着采矿接近断层，工作面上E浓度显著增加。这一观察结果强调了D对提高岩爆风险的关键影响。此外，我们发现增强的断层凝聚力有助于E的降低，从而降低岩爆风险。这些见解为深部采矿作业中的岩爆灾害管理提供了一个新的视角，为预测和减少地质灾害提供了理论和方法上的进步。
