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Research on damage failure mechanism and dynamic mechanical behavior of layered shale with different angles under confining pressure
含特征层理页岩围压下的秘密：损伤机理与动态力学行为解密
Ning Luo, Haohao Zhang, Yabo Chai, Penglong Li, Cheng Zhai, Jianan
发布时间：2024-01-29
关键词：Research on damage failure mechanism and dynamic mechanical behavior of layered shale with different angles under confining pressure
摘要：岩石工程的深入发展使得高地应力下岩石的动态力学性质及破坏特性成为研究的焦点。在高低应力下的变形稳定性和关键控制因素的识别是岩石力学和工程未来研究中的难题。高地应力、温度、渗透压和采矿干扰的复杂环境导致了围压不稳定性和岩爆的不可避免性。本研究建立了围压作用下考虑层理效应的页岩有限元模型。研究结果可作为深部资源开采的关键技术参数。
阅读全文 PDF 引用The role of temperature-enhanced fault closure in promoting postinjection pressure diffusion and seismicity in enhanced geothermal systems
Yinlin Ji, Yuedu Chen, Hannes Hofmann, Yuan Zhang, Arno Zang, Günter Zimmermann
发布时间：2023-11-23
关键词：The role of temperatureenhanced fault closure in promoting postinjection pressure diffusion and seismicity enhanced geothermal systems
摘要：AbstractPost shut-in seismic events in enhanced geothermal systems (EGSs) occur predominantly at the outer rim of the co-injection seismic cloud. The concept of postinjection fracture and fault closure near the injection well has been proposed and validated as a mechanism for enhancing post shut-in pressure diffusion that promotes seismic hazard. This phenomenon is primarily attributed to the p...
阅读全文 PDF 引用Fan-hinged shear instead of frictional stick–slip as the main and most dangerous mechanism of natural, induced, and volcanic earthquakes in the earth's crust
俄罗斯资深教授发表系列文章-2：风扇机制 - 地震理解的范式转变
Boris G. Tarasov
发布时间：2023-11-07
关键词：Fanhinged shear instead of frictional stickslip as the main and most dangerous mechanism natural induced volcanic earthquakes in earths crust
摘要：1 INTRODUCTIONFrictional stick–slip instability along pre-existing faults has been accepted as the main mechanism of earthquakes for about 60 years, following the publication of laboratory results by Brace and Byerlee (1966). The gist of their work is the conclusion that the stick–slip instability along pre-existing faults in rock specimens reflects all the features inherent in earthquakes, s...
阅读全文 PDF 引用Dominant factors in MiniCone, CPT and pile correlations: A data-based approach
揭秘MiniCone、CPT和桩之间的关键联系：基于数据的深度探索
Seyed Sajad Shirani, Abolfazl Eslami, Amirhossein Ebrahimipour, Moses Karakouzian
发布时间：2023-11-23
关键词：Dominant factors in MiniCone CPT and pile correlations A databased approach
摘要：1 INTRODUCTIONDevices and equipment can be transported to the site for performing in situ tests, aiming to overcome the challenges associated with conventional methods comprising drilling, sampling, transportation, remolding, and testing (Schmertmann, 1978). Research has been conducted to provide the possibility of modeling real conditions in practice from different aspects representing realist...
阅读全文 PDF 引用New understandings on initiation and evolution of disasters in deep underground
Jianguo Wang, Heping Xie, Chunfai Leung, Xiaozhao Li
发布时间：2023-10-24
关键词：New understandings on initiation and evolution of disasters in deep underground
摘要：The editors wish to highlight the articles appearing in this issue. The first article, entitled “New physics of supersonic ruptures” by Boris G. Tarasov, concerns the development of a new theory on the potential occurrence of ruptures after deep underground earthquakes. Two other articles belong to our first special theme of “Disaster evolution in deep underground.” The final two articles i...
阅读全文 PDF 引用New physics of supersonic ruptures
Boris G. Tarasov
发布时间：2023-10-12
关键词：New physics of supersonic ruptures
摘要：AbstractUntil recently, it is believed that the rupture speed above the pressure wave is impossible since spontaneously propagating ruptures are driven by the energy released due to the rupture motion, which is transferred through the medium to the rupture tip region at the maximum speed equal to the pressure wave speed. However, the apparent violation of classic theories has been revealed by n...
阅读全文 PDF 引用Coupling effects of temperature, confining pressure, and pore pressure on permeability and average pore size of Longmaxi shale
Xiaoyan Zhang, Hongsen Li, Xue Tan, Guoliang Li, Hua Jiang
发布时间：2023-08-17
关键词：absolute permeability, apparent permeability, gas slippage factors, pore width, shale
摘要：AbstractThe evolution due to temperature and pressure of shale reservoir permeability affects the productivity evaluation and development decision of shale gas reservoirs, which is very important for the exploration and development of unconventional gas reservoirs. This study analyzed the coupling effects of temperature (25, 50, and 75°C), effective stress (15 and 30 MPa), and pore pressure (0...
阅读全文 PDF 引用Shaking table test and cumulative deformation evaluation analysis of a tunnel across the hauling sliding surface
山区隧道工程：滑坡隐患的解决之道
Lifang Pai, Honggang Wu, Xu Wang
发布时间：2023-11-18
关键词：Shaking table test and cumulative deformation evaluation analysis of a tunnel across the hauling sliding surface
摘要：滑坡是山区隧道施工中最复杂的灾害之一。由于山区地形等条件的限制，隧道必须靠近或直接穿过易滑坡区，或者隧道穿过的边坡区以前经历过滑坡。在地震和隧道施工的干扰下，先前稳定或变形不明显的边坡会发生较大的变形，甚至发展成滑坡。隧道-滑坡相互作用问题日益突出，已成为地下工程研究的热点问题。本文从大量具有共同关系的工程案例中概化模型，并进行振动台试验，以获得研究的通用规则，这也使试验结果更具可扩展性。研究成果可为西部山区高烈度地震区交通隧道工程的建设提供重要的理论技术支撑。
阅读全文 PDF 引用Excavation compensation theory and supplementary technology system for large deformation disasters
大变形灾害开挖补偿理论及其配套技术体系
Manchao He, Qiru Sui, Zhigang Tao
发布时间：2023-06-27
关键词：nergy engineering, excavation compensation, large deformation, NPR anchor cable, slopeengineering, traffic tunnel engineering
摘要：鉴于能源工程、交通隧道工程、边坡工程中大变形灾害治理的挑战，提出了大变形灾害的开挖补偿理论，并研发了其配套技术体系。基于 "隧（巷）道工程中的破坏都源于工程开挖 "的理念，本文从 “道”、“器”、“术”，以及大变形力学设计方法和工程应用五个方面总结介绍了开挖补偿理论的发展。首先，发展了补偿力的计算方法，完善了大变形灾害控制理论体系。其次，介绍了自主研发的具有高恒阻力、大变形、超吸能特性的负泊松比（NPR）锚杆/索，及其大变形灾害控制应用效果；智能隧道监测预警云平台系统和滑坡地质灾害牛顿力远程监测预警系统。再者，介绍了针对不同工程背景提出的双梯度超前注浆技术、二维爆破技术、牛顿力监测-预警-控制一体化技术。最后，介绍了该理论在能源工程、交通隧道工程、边坡工程等领域成功应用的典型案例。开挖补偿理论在大变形灾害控制中的效果得到了成功验证。
阅读全文 PDF 引用Visualizing experimental investigation on gas–liquid replacements in a microcleat model using the reconstruction method
Shaojie Chen, Jicheng Zhang, Dawei Yin, Faxin Li, Jialin Lu, Peiyang Zhu
发布时间：2023-05-31
关键词：dynamic contact angle,flow visualization, instantaneous velocity, microcleat, residual liquid
摘要：Highlights Geometric characterization and reconstruction of a three-dimensional transparent cleat model were performed. Gas–liquid repulsion characteristics were determined in a visualized microcleat model. Transient flow velocity hysteresis is evident in tortuous channels. Dynamic variation of the contact angle shows diversity. Pressure changes the groove liquid content and liquid film thickness.
阅读全文 PDF 引用Nonlinear anisotropic finite element analysis of liquefiable tunnel–sand–pile interaction under seismic excitation
Md. Foisal Haque
发布时间：2023-11-23
关键词：Nonlinear anisotropic finite element analysis of liquefiable tunnelsandpile interaction under seismic excitation
摘要：AbstractNonlinear time-history analysis can be used to determine the liquefiable behaviors of the tunnel–sand–pile interaction (TSPI) model with the consideration of sand anisotropy. This study presents the nonlinear response of the TSPI model with the existence of liquefaction under seismic excitation. The analysis reveals that tunnel and pile behave as isotropic elements, while sand shows i...
阅读全文 PDF 引用A research on excavation compensation theory for large deformation disaster control and a review on the multiphysical–multiscale responses of salt rock for underground gas storage
Jianguo Wang, Heping Xie, Chunfai Leung, Xiaozhao Li
发布时间：2023-05-31
关键词：A research on excavation compensation theory for large deformation disaster control and a review the multiphysicalmultiscale responses of salt rock underground gas storage
摘要：We highlight two articles in this issue: A research article titled “Excavation compensation theory and supplementary technology system for large deformation disasters” by Manchao He et al. and a review article titled “Mineralogy, microstructures and geomechanics of rock salt for underground gas storage” by Veerle Vandeginste et al.
阅读全文 PDF 引用Safety analysis of Sormeh underground mine to improve sublevel stoping stability
Mostafa Hosseini, Amin Azhari, Rahman Lotfi, Alireza Baghbanan
发布时间：2023-05-31
关键词：Safety analysis of Sormeh underground mine to improve sublevel stoping stability
摘要：Highlights The Taguchi method has been applied to study the influence of geometric parameters and stress on stope stability. The results show a full factorial analysis is more reliable as stope stability is a complex process. The squat pillar and Mathews method overestimates the impact of overburdened stress and stope height on rib pillar stability. In a high stope that is divided with several sill pillars, the Mathews method cannot accurately predict the sill pillar's impact on stope stability. For roof stability, sill pillar and stope span should be considered the most influential parameters, whereas W/H ratios should be assessed for hanging wall stability.
阅读全文 PDF 引用Mineralogy, microstructures and geomechanics of rock salt for underground gas storage
Veerle Vandeginste, Yukun Ji, Frank Buysschaert, George Anoyatis
发布时间：2023-05-31
关键词：creep, hydrogen, impurities, rock salt, salt solution mining, underground gas storage
摘要：Highlights Hydrogen may become indispensable in the transition to renewable energy Rock salt caverns may provide leak-proof containers for hydrogen storage Mineralogical composition links with depositional environment and diagenesis Microstructure links to cataclastic deformation, diffussive mass transfer and intracrystalline plastic deformation Geomechanical behavior of rock salt is influenced by its composition and impurities
阅读全文 PDF 引用A multiphysical-geochemical coupling model for caprock sealing efficiency in CO2 geosequestration
中国、澳大利亚和新加坡共同探秘多物理地球化学耦合模型下的二氧化碳地质封存
王建国, 王惠民,王小林, 杨圣奇, Hongtao Wu, Chunfai Leung, Jiali Tian
发布时间：2023-05-31
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Damage evolution of surrounding sandstone rock under charging–discharging cyclic loading in the natural gas storage of abandoned mines based on the discrete element method
Zhanguo Ma, Junyu Sun, Peng Gong, Erwin Oh, Jun Hu, Ruichong Zhang
发布时间：2024-05-30
关键词：damage evolution model of surrounding rock, discrete element method, force chains, gascharging–discharging cycle, gas storage in abandoned mine
摘要：AbstractGas storage in abandoned mines is one way to reuse waste space resources. The surrounding rock of gas storage reservoirs in underground roadways undergoes damage and deformation under the cyclic loading of gas charging and discharging, which can pose a risk to the safety of the reservoirs. This study establishes a true triaxial numerical model of rock mass with the discrete element meth...
阅读全文 PDF 引用Deep sea mineral resources and underground space as well as infrastructure for sustainable and liveable cities
Jianguo Wang, Heping Xie, Chunfai Leung, Xiaozhao Li
发布时间：2024-05-27
关键词：Deep sea mineral resources and underground space as well infrastructure for sustainable liveable cities
摘要：This issue covers the papers on two special themes: (1) Mineral resources from deep sea—Science and Engineering and (2) Planning and development of underground space and infrastructure for sustainable and liveable cities.The special theme of “Mineral resources from deep sea—Science and Engineering” is on the exploration and transport of mineral resources from deep sea. The mineral resources...
阅读全文 PDF 引用Application of machine learning and deep learning in geothermal resource development: Trends and perspectives
Abdulrahman Al-Fakih, Abdulazeez Abdulraheem, Sanlinn Kaka
发布时间：2024-05-23
关键词：artificial intelligence, deep learning, geothermal energy development, machine learning
摘要：AbstractThis study delves into the latest advancements in machine learning and deep learning applications in geothermal resource development, extending the analysis up to 2024. It focuses on artificial intelligence's transformative role in the geothermal industry, analyzing recent literature from Scopus and Google Scholar to identify emerging trends, challenges, and future opportunities. The re...
阅读全文 PDF 引用Performance analysis of deep borehole heat exchangers for decarbonization of heating systems
Andreas E. D. Lund
发布时间：2024-05-16
关键词：clean energy, deep borehole exchangers, energy transition, geothermal heat, ground‐coupledheat pump
摘要：AbstractMeeting the climate change mitigation targets will require a substantial shift from fossil to clean fuels in the heating sector. Heat pumps with deep borehole exchangers are a promising solution to reduce emissions. Here the thermal behavior of deep borehole exchangers (DBHEs) ranging from 1 to 2 km was analyzed for various heat flow profiles. A strong correlation between thermal energ...
阅读全文 PDF 引用Study on the variation of the permeability coefficient of soil–rock mixtures in fault zones under different stress states
Wenhui Tan, Shuang Liang, Xuewen Ma, Pengfei Wang
发布时间：2024-05-14
关键词：permeability coefficient, rock block percentage, sensitivity analysis, soil–rock mixture, stress state
摘要：AbstractAs the first gold mine discovered at the sea in China and the only coastal gold mine currently mined there, Sanshandao Gold Mine faces unique challenges. The mine's safety is under continual threat from its faulted structure coupled with the overlying water. As the mining proceeds deeper, the risk of water inrush increases. The mine's maximum water yield reaches 15 000 m3/day, which is...
阅读全文 PDF 引用Experimental study on the damage characteristics of cyclic disturbance and acoustic emission characteristics of different types of sandstones under high stress in deep mines
Yujing Jiang, Bin Liang, Dong Wang, Ling Dong, Hengjie Luan, Changsheng Wang, Jiankang Liu
发布时间：2024-05-10
关键词：acoustic emission, cyclic perturbation, high stress, sandstone, sine wave
摘要：AbstractThree sandstone specimens common in rock engineering were selected to study the differences in the mechanical properties of rocks with different lithologies. The development and expansion of the internal cracks in the specimens were observed by combining the simulation system with the acoustic emission system. Through the combination of dynamic and static stresses, the deformation and d...
阅读全文 PDF 引用Fracturing behaviors of flawed granite induced by dynamic loadings: A study based on DIP and PFC
Xiao Wang, Wenbin Sun, Changdi He, Wei Yuan, Vahab Sarfarazi, Haozheng Wang
发布时间：2024-05-07
关键词：Fracturing behaviors of flawed granite induced by dynamic loadings A study based on DIP and PFC
摘要：AbstractThis study explored the dynamic behaviors and fracturing mechanisms of flawed granite under split-Hopkinson pressure bar testing, focusing on factors like grain size and flaw dimensions. By means of digital image processing and the discrete element method, Particle Flow Code 2D (PFC2D) models were constructed based on real granite samples, effectively overcoming the limitations of prior...
阅读全文 PDF 引用A comprehensive review of experimental studies on shear behavior of bolted rock joints with varying rock joint and bolt parameters and normal stress
Chang Zhou, Zhenwei Lang, Shun Huang, Qinghong Dong, Yanzhi Wang, Wenbo Zheng
发布时间：2024-05-06
关键词：bending angle, rock bolt, rock fracture, roughness, shear resistance
摘要：AbstractThe shear characteristics of bolted rock joints are crucial for the stability of tunneling and mining, particularly in deep underground engineering, where rock bolt materials are exposed to high stress, water pressure, and engineering disturbance. However, due to the complex interaction between bolted rock joints and various geological contexts, many challenges and unsolved problems ari...
阅读全文 PDF 引用A case study on the stability of a big underground powerhouse cavern cut by an interlayer shear zone in the China Baihetan hydropower plant
Lifang Zou, Guotao Meng, Jiayao Wu, Wei Fu, Weijiang Chu, Weiya Xu
发布时间：2024-04-30
关键词：A case study on the stability of a big underground powerhouse cavern cut by an interlayer shear zone in China Baihetan hydropower plant
摘要：AbstractThe big underground powerhouse cavern of the China Baihetan hydropower plant is 438 m long, 34 m wide, and 88.7 m high. It is cut by a weak interlayer shear zone and its high sidewall poses a huge stability problem. This paper reports our successful solution of this problem through numerical simulations and a replacement-tunnel scheme in the detailed design stage and close site monit...
阅读全文 PDF 引用Energy characteristics of saturated Jurassic sandstone in western China under different stress paths
Yi Yang, Jian Lin, Yun Wu, Shilong Peng, Wanhang Shao, Lining Yang
发布时间：2024-04-27
关键词：Energy characteristics of saturated Jurassic sandstone in western China under different stress paths
摘要：AbstractTo study the energy evolution and failure characteristics of saturated sandstone under unloading conditions, rock unloading tests under different stress paths were conducted. The energy evolution mechanism of the unloading failure of saturated sandstone was systematically explored from the perspectives of the stress path, the initial confining pressure, and the energy conversion rate. T...
阅读全文 PDF 引用A thermal stress loading technique for large-sized hot dry rock mechanical tests
Huiling Ci, Bing Bai, Hongwu Lei, Yan Zou, Jianfeng Liu
发布时间：2024-04-26
关键词：Deep rock engineering, high‐temperature and high‐stress conditions, hot dry rock, large‐sized modeltest, thermal stress loading
摘要：AbstractTesting of large-sized specimens is becoming increasingly important in deep underground rock mechanics and engineering. In traditional mechanical loading, stresses on large-sized specimens are achieved by large host frames and hydraulic pumps, which could lead to great investment. Low-cost testing machines clearly always have great appeal. In this study, a new approach is proposed using...
阅读全文 PDF 引用Deformation monitoring at shield tunnel joints: Laboratory test and discrete element simulation
Maoyi Mao, Xiaowei Yang, Chun Liu, Tao Zhao, Hui Liu
发布时间：2024-04-26
关键词：Deformation monitoring at shield tunnel joints Laboratory test and discrete element simulation
摘要：AbstractShield tunnel, composed of several segments, is widely used in urban underground engineering. When the tunnel is under load, relative displacement occurs between adjacent segments. In the past, distributed optical fiber sensing technology was used to perform strain monitoring, but there is an urgent need to determine how to transform strain into displacement. In this study, optical freq...
阅读全文 PDF 引用Performance evaluation of rock fragmentation prediction based on RF-BOA, AdaBoost-BOA, GBoost-BOA, and ERT-BOA hybrid models
Junjie Zhao, Diyuan Li, Jian Zhou, Danial J. Armaghani, Aohui Zhou
发布时间：2024-04-22
关键词：ayesian optimization, blasting, machine learning, rock fragmentation
摘要：AbstractRock fragmentation is an important indicator for assessing the quality of blasting operations. However, accurate prediction of rock fragmentation after blasting is challenging due to the complicated blasting parameters and rock properties. For this reason, optimized by the Bayesian optimization algorithm (BOA), four hybrid machine learning models, including random forest, adaptive boost...
阅读全文 PDF 引用Assessment for shallow and large tunnel construction in weak ground conditions: Application of tunnel boring machines
Servet Karahan, Candan Gokceoglu
发布时间：2024-04-17
关键词：face pressure, NATM, railway tunnel, TBM, weak ground
摘要：AbstractWith recent technological advancements, tunnel boring machines (TBM) have developed and exhibited high performance in large diameters and weak ground conditions. Tunnels are crucial structures that significantly influence the timelines of highway and railway projects. Therefore, the construction of tunnels with TBMs becomes a preferred option. In this study, a comparative analysis betwe...
阅读全文 PDF 引用Prediction of rock mass classification in tunnel boring machine tunneling using the principal component analysis (PCA)–gated recurrent unit (GRU) neural network
Ke Man, Liwen Wu, Xiaoli Liu, Zhifei Song, Kena Li, Nawnit Kumar
发布时间：2024-04-12
关键词：Prediction of rock mass classification in tunnel boring machine tunneling using the principal component analysis PCAgated recurrent unit GRU neural network
摘要：AbstractDue to the complexity of underground engineering geology, the tunnel boring machine (TBM) usually shows poor adaptability to the surrounding rock mass, leading to machine jamming and geological hazards. For the TBM project of Lanzhou Water Source Construction, this study proposed a neural network called PCA–GRU, which combines principal component analysis (PCA) with gated recurrent uni...
阅读全文 PDF 引用
- 1Frictional Stability of Longmaxi Shale Gouges and Implications for Deep Seismic Potential in the Southeastern Sichuan Basin 2Additive manufacturing technology in mining engineering research 3The theory of compression–shear coupled composite wavepropagation in rock 4High-performance computing of 3D blasting wave propagation in underground rock cavern by using 4D-LSM on TianHe-3 prototype E class supercomputer 5Mineralogy, microstructures and geomechanics of rock salt for underground gas storage 6Influence of cooling speed on the physical and mechanical properties of granite in geothermal-related engineering 7Grouting theories and technologies for the reinforcement of fractured rocks surrounding deep roadways 8Potential triggers for large earthquakes in open-pit mines: A case study from Kuzbass, Siberia 9A multiphysical-geochemical coupling model for caprock sealing efficiency in CO2 geosequestration 10Development of urban underground space in coastal cities in China: A review
- 1Frictional Stability of Longmaxi Shale Gouges and Implications for Deep Seismic Potential in the Southeastern Sichuan Basin 2Influence of cooling speed on the physical and mechanical properties of granite in geothermal-related engineering 3Grouting theories and technologies for the reinforcement of fractured rocks surrounding deep roadways 4Numerical simulation of zonal disintegration of surrounding rock in the deep-buried chamber 5Visualizing experimental investigation on gas–liquid replacements in a microcleat model using the reconstruction method 6A multiphysical-geochemical coupling model for caprock sealing efficiency in CO2 geosequestration 7Advancing deep underground research through integration of engineering and science 8Development of urban underground space in coastal cities in China: A review 9Stress wave propagation and incompatible deformation mechanisms in rock discontinuity interfaces in deep-buried tunnels 10Triaxial creep damage characteristics of sandstone under high crustal stress and its constitutive model for engineering application