面向国家“深地”战略和“双碳”目标，聚焦“双碳”战略背景下的当代深地工程（如深地能源开采、二氧化碳地质封存、地下能源存储以及深部废弃矿井再利用等典型工程背景，图1）中的关键科学问题，重点研究岩体界面（裂隙与断层）的摩擦–渗流耦合机制，系统阐明其动态演化规律，并研发可对岩体界面的摩擦与渗流特性进行联合监测与调控的关键技术。

图1、面向“双碳”战略的当代深地工程

具体利用高频高精度光纤监测、声发射监测和分布式应变监测、以及多物理场跨尺度建模和参数反演等前沿技术手段，结合小尺度室内岩石力学试验、大尺度现场数据分析和多尺度数值与解析模拟+机器学习建模（图2），开展深部能源储层岩石物理力学相关的基础与应用研究，包括：

• 深地工程中裂隙和断层的摩擦-渗流耦合机制及其调控技术

• 气液注采工业活动诱发地震机理及风险评估与调控技术

• 二氧化碳和氢气地下存储的密封性与安全性演化机制

• 深部地热储层改造与热–流–固–化多场耦合机制

• 多场耦合下岩石物理力学实验技术研发与应用

图2、深地工程中岩体界面摩擦-渗流耦合的多尺度、多方法研究思路

本硕博一体化课程：岩石物理学，2026年春季学期

江苏特聘教授计划，2025-2028，在研，主持

南京大学高层次人才科研启动项目，深地岩体界面与流体，2025-2028，在研，主持

国家自然科学基金青年项目，原位法向约束下干热岩裂隙水力剪切的摩擦-渗流耦合机理与调控方法，2026-2028，在研，主持

深地工程智能建造与健康运维全国重点实验室开放基金重点项目，基于实时微震数据的深地热储层改造诱震风险-增渗效果联合评估与预测，2025-2027，在研，主持

德国亥姆霍兹国家研究中心联合会青年科学家创新团队项目，Advanced reservoir engineering concepts for the controlled utilization of deep geothermal energy in urban areas，2020-2026，在研，主持实验室尺度研究

煤炭资源与安全开采国家重点实验室开放基金，循环注水条件下低渗花岗岩裂隙剪切摩擦特性研究，2021-2022，已结题，主持

中文特邀综述：

冀胤霖，张苏鹏，朱鸿鹄，张振宇，宋先知，王勤．深地工程中岩体界面的摩擦-渗流耦合机理与调控技术：综述与展望[J/OL]．采矿与岩层控制工程学报. https://doi.org/10.13532/j.jmsce.cn10-1638/td.2025-1186

Published Journal Papers (# student or postdoc; * corresponding author)

(51 in total; 20 as first-author; 12 as corresponding-author)

2026

[1] Ji, Y.*, & Weijermars, R. (2026). Multi-physics interactions in induced seismicity associated with hydraulic stimulation of unconventional geoenergy reservoirs. Renewable and Sustainable Energy Reviews, 225. https://doi.org/10.1016/j.rser.2025.116179

[2] Ji, Y.*(2026)The century-long development of rock mechanics research: revisited for contemporary subsurface applications. GeoEnergy Communications. 2(1). https://doi.org/10.1007/s44421-026-00015-8 (Invited Paper)

[3] Meng, D.^#, Ji, Y.*, Zhu, HH., Zhang, S., Zhang, Z.*, Hofmann, H., & Zang, A. (2026). Thermo-hydro-mechanical-chemical controls on fracture and fault responses to fluid injection in Enhanced Geothermal Systems: Current understanding and future directions. Renewable and Sustainable Energy Reviews, 229. https://doi.org/10.1016/j.rser.2025.116665

[4] Meng, D.^#, Ji, Y.*, Zhu, HH.*, Zhang S., Duan, K., Hofmann, H., Zang, A. (2026).Advancing from Roller-Chain to Ball-Chain to Measure Rock Circumferential Deformation. Rock Mechanics and Rock Engineering. https://doi.org/10.1007/s00603-026-05450-x

[5] Zhang, S.^#, Xia, X.^#, Ji, Y.*, Zhu, HH.,Zimmermann, G., & Zhang, Z. Seismogenic index improves deep learning performance for seismicity rate forecasting in Utah FORGE and EGS Collab projects. Geophysical Journal International. https://doi.org/10.1093/gji/ggag190

[6] Zhang S.^#, Ji, Y.*, Zhu, HH., Wang, Q., He Z.*, Hofmann, H., & Jing, X. Stress dependence of rock fracture permeability: A comprehensive review of laboratory data and implications for hydraulic stimulation. International Journal of Coal Science and Technology. https://doi.org/10.1007/s40789-026-00899-1

[7] Meng, D.^#, Ji, Y.*, Zhu, HH.*, Zhang S., Hofmann, H., Zang, A. (2026). On the critical importance of shear-parallel displacement measurements in shear tests of rock fractures. Journal of Geomechanics and Measurements. (Invited Article)

[8] Lindner, N.^#, Hofmann, H., Blöcher, G., Cacace, M., Hutka, G., Ji, Y., Stefanou, I. (2026). Influencing slip and permeability of granitic fractures using feedback-controlled fluid injection: a laboratory-scale numerical modelling study. Geophysical Journal International,245(2). https://doi.org/10.1093/gji/ggag094

2025

[1]Ji, Y.*†, Zhang, S.†, Hofmann, H., Yeo, I.-W., Ge, S., Zimmermann, G., & Li, S. (2025). Alleviating post-injection seismic hazard in enhanced geothermal systems: Insights from a multi-scale study. Earth and Planetary Science Letters, 669, 119579. https://doi.org/10.1016/j.epsl.2025.119579 (†contributed equally to this work)

[2] Ji, Y., Zhang, S., Zhu, HH., Zhang, Z., Song, X., Wang, Q. (2025). Mechanisms and control techniques of friction-permeability coupling in rock mass discontinuities in deep underground engineering: State of the art and future perspectives. Journal of Mining and Strata Control Engineering. https://doi.org/10.13532/j.jmsce.cn10-1638/td.2025-1186 (Invited Review in Chinese)

冀胤霖, 张苏鹏, 朱鸿鹄, 张振宇, 宋先知, & 王勤. (2025). 深地工程岩体界面摩擦−渗流耦合机理与调控技术: 综述与展望. 采矿与岩层控制工程学报, 7(6), 063541-063541-063541-063549. https://doi.org/10.13532/j.jmsce.cn10-1638/td.2025-1186 (特邀综述)

[3] Miao, S.*, Zang, A., Pan, P., Ji, Y.*, Rybacki, E., Hofmann, H., Blöcher, G., & Lipus, M. (2025). Quantifying Localized and Delocalized Rock Deformation in Multi‐Stage Relaxation Experiments Using Distributed Optical Fiber Sensing. Journal of Geophysical Research: Solid Earth, 130(4). https://doi.org/10.1029/2024jb029881

[4] Kalantar, A.^#, Hofmann, H., Ji, Y., Blöcher, G., Muhl, L., Zang, A., & Deon, F. (2025). Limits of Self‐Propping in Enhanced Geothermal Systems: New Experimental Insights From Shear, Tensile and Saw‐Cut Fractures in Odenwald Granodiorite. Journal of Geophysical Research: Solid Earth, 130(10). https://doi.org/10.1029/2025jb031938

[5] Miao, S.*, Zang, A., Blöcher, G., Ji, Y.^*, Hofmann, H., & Pan, P. (2025). Strain localization and time-dependent deformation in granodiorite characterized by distributed optical fiber sensing. Journal of Rock Mechanics and Geotechnical Engineering. https://doi.org/10.1016/j.jrmge.2025.04.002

[6] Zang, A., Hofmann, H., Ji, Y., Zhuang, L., Lu, G., & Bunger, A. (2025). How rock hydraulic fatigue methods from mining and petroleum industry assist in unlocking deep heat for a clean energy future. Renewable and Sustainable Energy Reviews, 217. https://doi.org/10.1016/j.rser.2025.115683

[7] Zhang, X.^#, Si, G., Ji, Y., Cao, A., & Wang, C. (2025). Grain size effects on hydro-seismo-mechanical responses of granite during laboratory hydraulic fracturing. International Journal of Rock Mechanics and Mining Sciences, 194, 106241. https://doi.org/10.1016/j.ijrmms.2025.106241

[8] Xiang, Z.^#, Kang, W.-H., Ji, Y., Si, G., Canbulat, I., Lin, H., & Oh, J. (2025). Estimation of in-situ horizontal stresses based on multiscale borehole breakout data via machine learning: model development, validation and application. Geophysical Journal International, 242(1). https://doi.org/10.1093/gji/ggaf144

[9] Gao, Z.^#, Zhang, C., Ji, Y., Wang, Z., Zhan, J., He, M., Li, S., Zhang, Y., Gou, Y., Chen, Y., & Yao, L. (2025). Experimental Study on Tensile Strength Anisotropy of Granite: Insights from Horizontal Stress-Related Microcracks. Rock Mechanics and Rock Engineering. https://doi.org/10.1007/s00603-025-04570-0

[10] Deng, Q., Shangguan, J., Ji, Y., Cacace, M., Blöcher, G., & Schmittbuhl, J. (2025). Relating normal stiffness to permeability of a deformed self-affine rough fracture using its geometric properties. Journal of Rock Mechanics and Geotechnical Engineering, 17(5), 2829-2842. https://doi.org/10.1016/j.jrmge.2024.05.008

[11] Ma, X.^#, Hu, D., Ma, D., Ji, Y., Zang, A., Wang, H., Ma, Y., & Zhou, H. (2025). A shear-based breakdown model for the hydraulic fracturing of hot dry rock. Engineering Fracture Mechanics, 320. https://doi.org/10.1016/j.engfracmech.2025.111070

[12] Jiang, R.^#, Duan, K., Wang, L., Ji, Y., Zhang, Q., & Li, X. (2025). Characterization of shear-flow behaviors of rock fractures using a newly-developed shear-flow apparatus. Measurement Science and Technology, 36(11). https://doi.org/10.1088/1361-6501/ae18ee

2024

[1] Zhang, S.^#, Ji, Y.*, Hofmann, H., Cappa, F., & Li, S. (2024). Assessing Potential Seismic Hazard in Enhanced Geothermal Systems: Insights from Comparing Gonghe and Pohang Reservoirs. Seismological Research Letters. https://doi.org/10.1785/0220240245.

[2] Zhang, S.^#, Ji, Y.*, Hofmann, H., Yin, Q., Li, S., & Zhang, Y. (2024). Temporal evolution of shear-induced dilatancy of rock fractures: Controls from surface roughness and normal stress. Geophysical Journal International, 238(1): 199-213. https://doi.org/10.1093/gji/ggae156

[3] Zhang, S.^#, Ji, Y.*, Hofmann, H., Li, S., Rybacki, E., Zimmermann, G., & Zang, A. (2024). A laboratory study on fluid injection into a fault versus adjacent to a fault: Implications for injection-induced seismicity in EGS. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 382(2275). https://doi.org/10.1098/rsta.2023.0186(Invited paper)

[4] Fu, B.^#, Li, Y.*, Tang, C. a., Ji, Y.*, & Zang, A. (2024). A micromechanical analysis of marble pulverization under quasi-static progressive cyclic loading. International Journal of Rock Mechanics and Mining Sciences, 179. https://doi.org/10.1016/j.ijrmms.2024.105786

[5] Zhang, Y.^#, Ji, Y., Zhao, Y., Deng, Q., & Wang, C. (2024). Mechanical anisotropy associated with beddings in shale under Brazilian test conditions: Insights from acoustic emission statistics. Journal of Rock Mechanics and Geotechnical Engineering, 16(11), 4462-4479. https://doi.org/10.1016/j.jrmge.2024.01.006

[6] Fan, D.^#, Zhang, C., Ji, Y., Zhao, X., Zhao, Z., & He, M. (2024). Permeability Evolution of Rough Fractures in Gonghe Granite Subjected to Cyclic Normal Stress at Elevated Temperatures: Experimental Measurements and Analytical Modeling. Rock Mechanics and Rock Engineering. https://doi.org/10.1007/s00603-024-04141-9

[7] Jiang, R.^#, Duan, K., Ji, Y., Zhang, Q., Wang, L., & Zheng, Y. (2024). Impact of injection rate on smooth and rough fracture activation in granite: Laboratory-scale acoustic emission analysis. Journal of Rock Mechanics and Geotechnical Engineering. https://doi.org/10.1016/j.jrmge.2024.08.011

[8] Miao, S.*, Pan, P.-Z., Zang, A., Zhang, C., Hofmann, H., & Ji, Y.* (2024). Laboratory Shear Behavior of Tensile- and Shear-Induced Fractures in Sandstone: Insights from Acoustic Emission. Rock Mechanics and Rock Engineering. https://doi.org/10.1007/s00603-024-03780-2

2023

[1] Ji, Y.*, Zhang, W., Hofmann, H., Cappa, F., & Zhang, S. (2023). Fracture Permeability Enhancement During Fluid Injection Modulated by Pressurization Rate and Surface Asperities. Geophysical Research Letters, 50(18). https://doi.org/10.1029/2023gl104662

[2] Ji, Y.*, Zhang, W.*, Hofmann, H., Chen, Y., Kluge, C., Zang, A., & Zimmermann, G. (2023). Modelling of fluid pressure migration in a pressure sensitive fault zone subject to cyclic injection and implications for injection-induced seismicity. Geophysical Journal International, 232(3), 1655-1667. https://doi.org/10.1093/gji/ggac416

[3] Ji, Y.*, Chen, Y.*, Hofmann, H., Zhang, Y., Zang, A., & Zimmermann, G. (2023). The role of temperature‐enhanced fault closure in promoting postinjection pressure diffusion and seismicity in enhanced geothermal systems. Deep Underground Science and Engineering, 1-12. https://doi.org/10.1002/dug2.12053 (Invited Paper)

[4] Hutka, G. A.^#, Cacace, M., Hofmann, H., Zang, A., Wang, L., & Ji, Y. (2023). Numerical investigation of the effect of fluid pressurization rate on laboratory-scale injection-induced fault slip. Scientific Reports, 13(1), 4437. https://doi.org/10.1038/s41598-023-30866-8

2022

[1] Ji, Y.*, Hofmann, H., Duan, K., & Zang, A. (2022). Laboratory experiments on fault behavior towards better understanding of injection-induced seismicity in geoenergy systems. Earth-Science Reviews, 226. https://doi.org/10.1016/j.earscirev.2021.103916

[2] Ji, Y.*, Wang, L., Hofmann, H., Kwiatek, G., & Dresen, G. (2022). High‐Rate Fluid Injection Reduces the Nucleation Length of Laboratory Earthquakes on Critically Stressed Faults in Granite. Geophysical Research Letters, 49(23). https://doi.org/10.1029/2022gl100418 (Top Downloaded Article in GRL in 2022)

[3] Ji, Y.*, Hofmann, H., Rutter, E. H., & Zang, A. (2022). Transition From Slow to Fast Injection‐Induced Slip of an Experimental Fault in Granite Promoted by Elevated Temperature. Geophysical Research Letters, 49(23). https://doi.org/10.1029/2022gl101212

[4] Ji, Y.*, Hofmann, H., Rutter, E. H., Xiao, F.^#, & Yang, L. (2022). Revisiting the Evaluation of Hydraulic Transmissivity of Elliptical Rock Fractures in Triaxial Shear-Flow Experiments. Rock Mechanics and Rock Engineering, 55, 3781–3789. https://doi.org/10.1007/s00603-022-02797-9

[5] Ji, Y.*, Kluge, C., Hofmann, H., & Blöcher, G. (2022). Effects of external temperature and dead volume on laboratory measurements of pore pressure and injected volume in a rock fracture. Journal of Rock Mechanics and Geotechnical Engineering, 14(5), 1461-1469. https://doi.org/10.1016/j.jrmge.2021.12.007

[6] Li, Y.*, Du, X., & Ji, Y. * (2022). Prediction of the transitional normal stress of rock joints under shear. International Journal of Rock Mechanics and Mining Sciences, 159. https://doi.org/10.1016/j.ijrmms.2022.105203

[7] Rutter, E. H., Li, Y., Shang, J., & Ji, Y. (2022). Recent advances in mechanics and physics of rock fractures across scales, Frontiers in Earth Science, 1527. https://doi.org/10.3389/feart.2022.977496 (Editorial)

2021

[1] Ji, Y., Zhuang, L., Wu, W., Hofmann, H., Zang, A., & Zimmermann, G. (2021). Cyclic water injection potentially mitigates seismic risks by promoting slow and stable slip of a natural fracture in granite. Rock Mechanics and Rock Engineering, 54, 5389-5405. https://doi.org/10.1007/s00603-021-02438-7

[2] Ji, Y., Yoon, J. S., Zang, A., & Wu, W. (2021). Mitigation of injection-induced seismicity on undrained faults in granite using cyclic fluid injection: A laboratory study. International Journal of Rock Mechanics and Mining Sciences, 146. https://doi.org/10.1016/j.ijrmms.2021.104881

[3] Ji, Y., Fang, Z., & Wu, W. (2021). Fluid overpressurization of rock fractures: Experimental investigation and analytical modeling. Rock Mechanics and Rock Engineering, 54(6), 3039-3050. https://doi.org/10.1007/s00603-021-02453-8

[4] Wei, M., Dai, F., Ji, Y., & Wu, W. (2021). Effect of fluid pressure gradient on the factor of safety in rock stability analysis. Engineering Geology. https://doi.org/10.1016/j.enggeo.2021.106346

2020

[1] Ji, Y., & Wu, W. (2020). Injection-driven fracture instability in granite: Mechanism and implications. Tectonophysics, 791, 228572. https://doi.org/10.1016/j.tecto.2020.228572

[2] Ji, Y., Wanniarachchi, W. A. M., & Wu, W. (2020). Effect of fluid pressure heterogeneity on injection-induced fracture activation. Computers and Geotechnics, 123, 103589. https://doi.org/10.1016/j.compgeo.2020.103589

[3] Ji, Y., Wang, L., Zheng, Y., & Wu, W. (2020). Temperature-dependent abrasivity of Bukit Timah granite and implications for drill bit wear in thermo-mechanical drilling. Acta Geotechnica, 16, 885-893. https://doi.org/10.1007/s11440-020-01056-x

[4] Rathnaweera, T. D., Wu, W., Ji, Y., & Gamage, R. P. (2020). Understanding injection-induced seismicity in enhanced geothermal systems: From the coupled thermo-hydro-mechanical-chemical process to anthropogenic earthquake prediction. Earth-Science Reviews, 103182. https://doi.org/10.1016/j.earscirev.2020.103182

[5] Zou, J., Jiao, Y.-Y., Tang, Z., Ji, Y., Yan, C., & Wang, J. (2020). Effect of mechanical heterogeneity on hydraulic fracture propagation in unconventional gas reservoirs. Computers and Geotechnics, 125. https://doi.org/10.1016/j.compgeo.2020.103652

2019

[1] Ji, Y., Wu, W., & Zhao, Z. (2019). Unloading-induced rock fracture activation and maximum seismic moment prediction. Engineering Geology, 262, 105352. https://doi.org/10.1016/j.enggeo.2019.105352

[2] Duan, K., Ji, Y., Xu, N., Wan, Z., & Wu, W. (2019). Excavation-induced fault instability: Possible causes and implications for seismicity. Tunnelling and Underground Space Technology, 92, 103041. https://doi.org/10.1016/j.tust.2019.103041

[3] Duan, K., Ji, Y., Wu, W., & Kwok, C. Y. (2019). Unloading-induced failure of brittle rock and implications for excavation-induced strain burst. Tunnelling and Underground Space Technology, 84, 495-506. https://doi.org/10.1016/j.tust.2018.11.012

2016

[1] Ji, Y., Ren, T., Wynne, P., Wan, Z., Ma, Z., & Wang, Z. (2016). A comparative study of dust control practices in Chinese and Australian longwall coal mines. International Journal of Mining Science and Technology, 26(2), 199-208. https://doi.org/10.1016/j.ijmst.2015.12.004 (Best Paper Award)

Ÿ  2026, Discovery Early Career Researcher Award (DECRA), Australian Research Council, Australia. DECRA is Australia’s most prestigious early-career research fellowship, recognizing outstanding researchers worldwide demonstrating outstanding scientific excellence, independence, and leadership potential to deliver internationally leading, high-impact research.

Ÿ  2026, Chair of Working Group on ISRM Suggested Method for Hydraulic Shearing Experiments, International Society for Rock Mechanics and Rock Engineering (ISRM). Appointed to lead an international expert panel to develop an official ISRM Suggested Method to shape global standards and advance best practices for hydraulic shearing experiments.

Ÿ  2025, Jiangsu Distinguished Professor (Specially-Appointed), Jiangsu Provincial Government, China. This is a highly competitive provincial talent title awarded to outstanding scholars for exceptional academic achievement and leadership potential.

Ÿ  2025, Sole Author of a Government-Adopted Policy Advisory Report, Ministry of Education, China. A sole-authored expert advisory report on challenges and strategic recommendations for deep earth resource development and subsurface space utilization in China was adopted as an internal policy reference, highlighting its national policy relevance and strategic significance.

Ÿ  2024, Most Downloaded Article in Geophysical Research Letters, American Geophysical Union. This distinction recognizes articles ranked among the 10 most downloaded in Geophysical Research Letters during a calendar year.

Ÿ  2024, Excellent Scientific Editor Award, Journal of Rock Mechanics and Geotechnical Engineering. This award (including a certificate and a 3K CNY cash prize) recognizes excellent performance in editorial handling, peer-review service, and review turnaround efficiency.

Ÿ  2024, Outstanding Early Career Editorial Board Member, Deep Underground Science and Engineering. This recognition from DUSE was awarded for exceptional editorial contributions and promising early-career leadership in advancing both the journal and the field.

Ÿ  2022&2023, Outstanding Reviewer Award, Journal of Rock Mechanics and Geotechnical Engineering. This award (including a certificate and a 2K CNY cash prize) recognizes outstanding performance in peer review quality and review turnaround efficiency during a calendar year. I received this recognition in both years.

Ÿ  2020, Best Presentation Award, Society for Rock Mechanics & Engineering Geology, Singapore. This highly competitive annual award, which includes a certificate and a cash prize of 1K SGD, recognizes excellence in research and communication in rock mechanics, rock engineering, and engineering geology among professionals working in Singapore.

Ÿ  2020, CEE Best PhD Thesis Award, School of Civil and Environmental Engineering, Nanyang Technological University, Singapore. This annual award (including a certificate and a 2K SGD cash prize), recognizes the best doctoral thesis in the school.

Ÿ  2019, CEE Best Teaching Assistant Award, School of Civil and Environmental Engineering, Nanyang Technological University, Singapore. This annual award (including a certificate and a 500 SGD cash prize), recognizes outstanding performance in teaching support and student instruction in the school.

Ÿ  2016, NTU Research Scholarship (2016-2020), Nanyang Technological University, Singapore. A competitive university scholarship awarded to outstanding full-time graduate research students worldwide on the basis of academic excellence, supporting doctoral study at NTU, with a total cash-equivalent value of 114 K SGD.

Ÿ  2016, Outstanding Master’s Student Scholarship, China University of Mining and Technology, China. This annual award recognizes the top 1% of outstanding master’s students at the university and includes a certificate and a cash prize of 10 K CNY.

Ÿ  2013, Outstanding Undergraduate International Exchange Scholarship, China Scholarship Council, China. The scholarship supports overseas exchange study for 1,000 outstanding Chinese university students; during the inaugural year of this annual scholarship program, it funded my half-year exchange program at the University of Wollongong, Australia, with a value of ~10K AUD.