Article
Metallurgy & Metallurgical Engineering
Yi-yi Chen, Pei-wei Xiao, Peng Li, Xiang Zhou, Zheng-zhao Liang, Nu-wen Xu
Summary: This study analyzes the impact of faults on the formation of rockbursts in deep tunnels using numerical simulations and stress analysis. It reveals the existence of stress anomaly areas caused by faults and the propagation of rock mass failure. The findings are consistent with microseismic monitoring and field observations, providing insights into the mechanical behavior of tunnel excavation affected by faults.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Geochemistry & Geophysics
Yongsong Li, Chao Zhou
Summary: The study demonstrates that the microseismic monitoring system effectively captures blasting and microseismic signals during construction, and successfully identifies potential rockburst risk areas, providing technical support for later excavation and support of underground powerhouse caverns at the Huanggou Hydropower Station.
Article
Chemistry, Multidisciplinary
Ruixiong Xue, Yinghui Kong, Na Wu
Summary: The Shuangjiangkou hydropower station in China has complex geological conditions and frequent rockbursts during tunnel excavation. The use of microseismic monitoring technology and Hilbert-Huang transform (HHT) instantaneous frequency analysis can predict rockbursts by analyzing the frequency and energy characteristics of microseismic signals.
APPLIED SCIENCES-BASEL
(2023)
Article
Geosciences, Multidisciplinary
Tian-hui Ma, Chun-an Tang, Fei Liu, Shi-chao Zhang, Zhi-qiang Feng
Summary: Rockburst hazard is a significant issue in deep rock mechanics, and can be effectively monitored and controlled through methods such as microseismic monitoring and numerical simulation. This approach has been successfully applied in deep underground engineering projects to reduce the incidence of rockburst events.
GEOMATICS NATURAL HAZARDS & RISK
(2021)
Article
Energy & Fuels
Ke Ma, Haiyong Wang, Zhiyi Liao, Yilin Peng, Kaikai Wang
Summary: Rockburst, a frequent dynamic disaster in deep coal mines, poses a serious threat to the safe production of mines. This study utilized microseismic monitoring and numerical simulation to analyze the stress and energy evolution of surrounding rock and reveal the precursory characteristics of rockburst in the working face adjacent to the goaf. The results showed that the presence of the goaf led to an increased distribution of high-energy events in the overlying rocks, which was closely related to periodic weighting. The risk of rockburst could be effectively evaluated using the energy index and cumulative apparent volume. The simulation results aligned with the microseismic energy density measured via monitoring.
GEOMECHANICS AND GEOPHYSICS FOR GEO-ENERGY AND GEO-RESOURCES
(2022)
Article
Engineering, Multidisciplinary
Shili Li, Yong Ni, Yu Wang, Jinhui Shi, Shichao Zhang, Qiang Ge, Gang Zhang, Dong Guang, Xuqiang Wu, Chunan Tang, Benli Yu
Summary: This paper studies and fabricates microseismic (MS) sensors based on fiber optic interferometric scheme, and develops a highly sensitive fiber optic MS system to monitor rock mass structure. Field test results demonstrate that the system is superior to commercialized electrical monitoring equipment, providing continuous, high-accuracy, and reliable monitoring.
Article
Construction & Building Technology
Shibin Tang, Jiaming Li, Liexian Tang, Leitao Zhang
Summary: The occurrence of rockbursts in water-rich and water-poor areas is influenced by the classification of surrounding rock and excavation methods, and water can accelerate rockbursts under high stress conditions. Stress release is an effective method to control rockbursts.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Tianhui Ma, Daoyuan Lin, Liexian Tang, Limin Li, Chun'an Tang, Kedar Prasad Yadav, Wendong Jin
Summary: This study conducted in-depth records and analysis of the geological and rockburst data of the Qinling Water Tunnel. It proposed a rockburst tendency criterion, utilized microseismic monitoring technology for rockburst monitoring and early warning, and compared the results with statistical data to find a high accuracy in rockburst prediction.
GEOMATICS NATURAL HAZARDS & RISK
(2022)
Article
Geosciences, Multidisciplinary
Qun Yu, Danchen Zhao, Yingjie Xia, Shengji Jin, Jian Zheng, Qingkun Meng, Chaoqian Mu, Jingchi Zhao
Summary: This article focuses on the monitoring and prediction of rockburst disasters in the deep diversion tunnel of the Jinping Hydropower Station. Using microseismic monitoring technology and seismology principles, the precursor characteristics of rockburst disasters are analyzed and the relationship between microseismic activity and rockburst micro-fractures is studied. A multivariate early warning method based on comprehensive analysis of source parameters is proposed, providing an accuracy of 80.6% for rockburst prediction and warning in similar tunnel engineering projects.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Engineering, Geological
Yaxun Xiao, Shujie Chen, Liu Liu, Guangliang Feng, Junbo Zhou, Dongbo Hou, Shaojun Li, Jianing Guo
Summary: This paper proposes a novel method based on instantaneous phase difference intensity (IPDI) for accurately determining the S-wave arrival time of microseismic signals in tunnels. The IPDI method can correctly determine the arrival time of S-waves even when they are overlapped by P-waves. The method was successfully applied to microseismic monitoring in a deeply buried tunnel, improving the accuracy of locating rockburst and microseismic events.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Construction & Building Technology
Chao Zhang, Gaohan Jin, Chao Liu, Shugang Li, Renhui Cheng, Xinglong Wang, Xiangzhen Zeng
Summary: This study investigates the application of microseismic monitoring technology in coal mine safety monitoring, revealing the failure mechanism and energy conversion in coal-rock mass, and verifies the relationship between a new rockburst prediction parameter and microseismic energy through physical experiments. The results show that the new model can effectively assess the stability of coal-rock mass to a certain extent.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2021)
Article
Engineering, Environmental
Xige Liu, Wancheng Zhu, Yuehuan Han, Kai Guan, Ruibo Qin
Summary: Rockburst prevention is an urgent task in deep-rock engineering. Cutting slots in surrounding rock can reduce circumferential stress of a tunnel, but may also damage rock integrity. This study analyzes the influencing factors and effectiveness of slotting in rockburst prevention through experiments and numerical simulations.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Article
Chemistry, Multidisciplinary
Xuelong Li, Deyou Chen, Jianhua Fu, Shumin Liu, Xuesheng Geng
Summary: This study proposes a method of studying the risk of rockburst in mine workings through the double high-risk evaluation of microseismic events. The evaluation index system for microseismic events is based on the qualitative analysis results of an accident tree, and the fuzzy hierarchical comprehensive evaluation model is used to assess the risk in the Yanbei Coal Mine.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Environmental
Shengquan He, Dazhao Song, Xueqiu He, Zhenlei Li, Tuo Chen, Feng Shen, Jianqiang Chen, Hani Mitri
Summary: A study was conducted on rockbursts in steeply dipping coal seams (SDCSs), revealing the factors responsible for these events. Parametric studies and numerical modeling techniques were used to investigate the effects of mining depth, backfill material properties, lateral stress coefficient, and coal seam dip angle. The results were validated through analysis of microseismic events, roadway damage, and surface fractures.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2023)
Review
Chemistry, Multidisciplinary
Shichao Zhang, Chunan Tang, Yucheng Wang, Jiaming Li, Tianhui Ma, Kaikai Wang
Summary: This article reviews the characteristics, precursor features, and early warning methods of rockbursts in deep-buried tunnels. By summarizing the microseismic monitoring and localization methods, different approaches for predicting rockburst formation process and risk are discussed, providing development directions for future early warning of rockbursts.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Multidisciplinary
Xiang Li, Haoyu Mao, Biao Li, Nuwen Xu
Summary: A dynamic early warning model of rockburst using microseismic multi-parameters based on Bayesian network is proposed in this paper. By pre-processing historical data of rockburst, 114 sets of parameters required for Bayesian network structure learning are obtained, and belief update is performed by the Junction Tree algorithm. The model shows good precision and can effectively realize early warning of rockbursts.
ENGINEERING SCIENCE AND TECHNOLOGY-AN INTERNATIONAL JOURNAL-JESTECH
(2021)
Article
Engineering, Geological
Ke Ma, Guoyang Liu, Nuwen Xu, Zhenghu Zhang, Bo Feng
Summary: Through field experiments and three-dimensional discontinuous deformation analysis (3D DDA) method, this study investigated the motion characteristics of rockfalls under different conditions, revealing the laws of rockfall movements and quantitatively obtaining the evolution of motion characteristics under different conditions.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2021)
Correction
Metallurgy & Metallurgical Engineering
Biao Li, Quan-fu Ding, Nu-wen Xu, Yi-fan Lei, Yuan Xu, Zhong-ping Zhu, Jing-fei Liu
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2021)
Article
Environmental Sciences
Li Qian, Jianhai Zhang, Xianliang Wang, Yonghong Li, Ru Zhang, Nuwen Xu, Zhiguo Li
Summary: In this study, the creep behavior of granite in Shuangjiangkou underground powerhouse was investigated, and a new parameter DPR, the ratio of deviatoric stress to peak strength, was proposed. Based on the test results, an improved generalized Kelvin creep model was introduced to accurately describe the primary and secondary creep behavior of granite under given deviatoric stresses and confining pressures.
ENVIRONMENTAL EARTH SCIENCES
(2022)
Article
Multidisciplinary Sciences
Li Qian, Tianzhi Yao, Zuguo Mo, Jianhai Zhang, Yonghong Li, Ru Zhang, Nuwen Xu, Zhiguo Li
Summary: This study proposed a method using generative adversarial network (GAN) to optimize lateral stress coefficients of ancient stress fields, estimating the approximate ancient stress field by simulating valley evolution, and validating its effectiveness through numerical tests.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
Quanfu Ding, Biao Li, Haijian Su, Nuwen Xu, Xuehua Li, Xingyang Deng
Summary: High geo-stresses and complicated geological conditions are typical characteristics in the traffic tunnel of the tailrace surge chamber at the Shuangjiangkou hydropower station. Microseismic monitoring technology helped evaluate rock mass stability and reveal rock fracturing mechanisms. Weak structures and the multi-cavern effect exacerbated rock mass damage during excavation-unloading, with tensile failure being the main fracturing type.
GEOMATICS NATURAL HAZARDS & RISK
(2022)
Article
Engineering, Geological
Xiao Huang, Nuwen Xu, Wei Wu, Peiwei Xiao, Linlu Dong, Biao Li
Summary: This study uses microseismic monitoring and numerical modeling to investigate the stability of intersecting discontinuities in rock masses. The results suggest that the stability is influenced by geological features and mechanical properties, emphasizing the importance of paying attention to key properties favorable for rock instability.
INTERNATIONAL JOURNAL OF ROCK MECHANICS AND MINING SCIENCES
(2022)
Article
Metallurgy & Metallurgical Engineering
Biao Li, Quan-fu Ding, Nu-wen Xu, Feng Dai, Yuan Xu, Hong-lue Qu
Summary: Rock mass large deformation in underground powerhouse caverns is a significant hazard in hydropower engineering in Southwest China. Microseismic monitoring techniques can be used to detect the fractures generated during the development of rock mass large deformation. The study analyzes the MS b-values associated with rock mass large deformation and their temporal variation, and provides valuable information for understanding the fracturing characteristics of MS sources and early warning of rock mass large deformation in underground powerhouse caverns.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2022)
Article
Engineering, Geological
Peiwei Xiao, Haoyu Mao, Bo Qian, Biao Li, Xingguo Yang, Nuwen Xu
Summary: A high-precision microseismic monitoring system was established to monitor surrounding rock micro-fractures in the underground powerhouse of Shuangjiangkou Hydropower Station. Qualitative analysis of the damage mechanism of surrounding rock microfractures was conducted based on the source parameters of microseismic events. Numerical analysis using FLAC3D showed that considering microseismic damage can better reflect the actual situation of the field. The microfractures in the surrounding rock mainly exhibited mixed failure characteristics, with shear failures localized in certain areas and large fractures in the vault section.
JOURNAL OF ROCK MECHANICS AND GEOTECHNICAL ENGINEERING
(2022)
Article
Construction & Building Technology
Zhonghua Hu, Bangbiao Wu, Nuwen Xu, Kai Wang
Summary: This study investigates the failure mechanism of rock masses in the underground powerhouse caverns of the Baihetan hydropower station and finds that discontinuities significantly affect the stability of rock masses. A risk boundary, affected by discontinuities, is proposed to evaluate roof stability. The study provides valuable insights for the design of excavation and support systems in underground engineering projects.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2022)
Article
Construction & Building Technology
Jinyong Zhang, Nuwen Xu, Wei Wu, Peiwei Xiao, Biao Li, Linlu Dong
Summary: This study explores the application of the fast marching method (FMM) to improve the accuracy of microseismic source location in faulted rock masses, showing the potential to enhance location accuracy for P-wave propagation and indicating the need for further improvement.
TUNNELLING AND UNDERGROUND SPACE TECHNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Yuepeng Sun, Biao Li, Linlu Dong, Haoyu Mao, Nuwen Xu, Zhongping Zhu, Jinfei Liu
Summary: The failure processes and mechanism of the surrounding rock mass can be effectively analyzed through MS monitoring with moment tensor analysis. Different regions of the surrounding rock mass showed varying failure types and stress states.
GEOMATICS NATURAL HAZARDS & RISK
(2021)
Article
Multidisciplinary Sciences
Yu Liu, Jun Wang, Hui Li, Nuwen Xu
Summary: The article discusses the development trends, current status, and issues of environmental geoscience, pointing out the shortcomings of Chinese research in this field and exploring the future development priorities and recommendations.
CHINESE SCIENCE BULLETIN-CHINESE
(2021)
Article
Multidisciplinary Sciences
Li Qian, Jianhai Zhang, Xianliang Wang, Yonghong Li, Ru Zhang, Nuwen Xu, Zhiguo Li
Summary: The time-dependent behaviors of rocks, such as creep, are closely related to the long-term applied stress in underground engineering projects. By introducing a new dimensionless parameter DPR, the creep behavior of granite under different stress conditions can be effectively analyzed. A unified method for defining the long-term strength of rocks based on DPR and the secondary creep strain rate is proposed.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2021)