CSpace中国科学院武汉岩土力学研究所http://119.78.100.198/:802024-03-19T10:45:03Z2024-03-19T10:45:03ZGleaning insights from German energy transition and large-scale underground energy storage for China's carbon neutralityXie, YachenWu, XuningHou, ZhengmengLi, ZaoyuanLuo, JiashunLueddeke, Christian TruittHuang, LiangchaoWu, LinLiao, Jianxinghttp://119.78.100.198/:80/handle/2S6PX9GI/355692023-08-03T01:09:05Z2023-08-02T08:14:19Z题名: Gleaning insights from German energy transition and large-scale underground energy storage for China's carbon neutrality
作者: Xie, Yachen; Wu, Xuning; Hou, Zhengmeng; Li, Zaoyuan; Luo, Jiashun; Lueddeke, Christian Truitt; Huang, Liangchao; Wu, Lin; Liao, Jianxing
摘要: The global energy transition is a widespread phenomenon that requires international exchange of experiences and mutual learning. Germany's success in its first phase of energy transition can be attributed to its adoption of smart energy technology and implementation of electricity futures and spot marketization, which enabled the achievement of multiple energy spatial-temporal complementarities and overall grid balance through energy conversion and reconversion technologies. While China can draw from Germany's experience to inform its own energy transition efforts, its 11-fold higher annual electricity consumption requires a distinct approach. We recommend a clean energy system based on smart sector coupling (ENSYSCO) as a suitable pathway for achieving sustainable energy in China, given that renewable energy is expected to guarantee 85% of China's energy production by 2060, requiring significant future electricity storage capacity. Nonetheless, renewable energy storage remains a significant challenge. We propose four large-scale underground energy storage methods based on ENSYSCO to address this challenge, while considering China's national conditions. These proposals have culminated in pilot projects for large-scale underground energy storage in China, which we believe is a necessary choice for achieving carbon neutrality in China and enabling efficient and safe grid integration of renewable energy within the framework of ENSYSCO.(c) 2023 Published by Elsevier B.V. on behalf of China University of Mining & Technology. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).2023-08-02T08:14:19ZExperimental Study on Poisson's Ratio of Silty-Fine Sand with SaturationYan, KaiWang, YongLai, XianghuaWang, YanliYang, Zhiyonghttp://119.78.100.198/:80/handle/2S6PX9GI/355682023-08-03T01:21:41Z2023-08-02T08:13:54Z题名: Experimental Study on Poisson's Ratio of Silty-Fine Sand with Saturation
作者: Yan, Kai; Wang, Yong; Lai, Xianghua; Wang, Yanli; Yang, Zhiyong
摘要: The influence of saturation on the Poisson's ratio v of reservoir sediments has an engineering significance in the field of oil and nature gas exploration. Based on a self-developed combined (BE-EE-RC) test system, under the dehydration path, the Poisson's ratio variation of reservoir silty-fine sand in Hangzhou Bay, China, was investigated. Results show that the P- and S-wave velocities vary non-monotonically with decreasing saturation at different net stresses, and reach a maximum at the optimum saturation S-r((opt)); Biot's theory with respect to variation in V-p with S-r matches well with the measured e data. With a small amount of gas intrusion, Poisson's ratio of saturated sand shows a sudden drop and gradually stabilizes; then, it attenuates slowly and reaches the minimum value at S-r((opt)). Once the saturation degree decreases to the level lower than S-r((opt),) it rapidly increases. Based on the soil-water characteristic curve (SWCC) and mesoscopic evolution of internal pore water morphology, the variation in Poisson's ratio v can be divided into four segments of saturation: the boundary effect stage, the primary transition stage, the secondary transition stage, and the unsaturated residual stage. Ultimately, a prediction model for Poisson ratio's v of the silty-fine sand was proposed to consider the saturation variation.2023-08-02T08:13:54ZDevelopment of a Real-Time Monitoring and Calculation Method for TBM Disc-Cutter's Cutting Force in Complex GroundHuang, XingWang, ShaohuaLiu, QuanshengWang, XinyuLiu, BinZhang, Xiaobohttp://119.78.100.198/:80/handle/2S6PX9GI/355672023-08-02T08:13:36Z2023-08-02T08:13:36Z题名: Development of a Real-Time Monitoring and Calculation Method for TBM Disc-Cutter's Cutting Force in Complex Ground
作者: Huang, Xing; Wang, Shaohua; Liu, Quansheng; Wang, Xinyu; Liu, Bin; Zhang, Xiaobo
摘要: Cutting force is an essential parameter of the operating state of tunneling boring machines. In this study, a real-time cutting force monitoring method is proposed for widely used disc-cutters. A microcylindrical strain gauge is embedded in predrilled small boreholes in the bottom and side surface of the two C-shaped cushion blocks on the cutter saddle. The strain gauges are protected by a glue seal, and the sensor leads are protected using a groove and covered by wear-resistant steel. The strain is measured using a wireless strain node and transmitted from the strain node to the wireless gateway connected to a computer. Then, the strain-force relationship of the cushion block is fitted using a laboratory static calibration test. The load on the cushion block is calculated based on the measured cushion block strain. Subsequently, considering the cutter system's vibration, a multi-degree-of-freedom coupling vibration differential equation of the cutter system is established. The mass matrix, stiffness matrix, and damping matrix of the cutter system are also determined. Finally, a Wilson -0 inverse analysis method is put forward to calculate the cutter's external load. The developed real-time cutting force monitoring method will not affect cutter replacement, and the cushion block equipped with sensors can be reused. The cutting force identification method, which considers the cutter system vibration, is rigorous in theory, and a useful numerical inverse analysis calculation method is provided.2023-08-02T08:13:36ZDynamic Mechanical Behaviors of Rock's Joints Quantified by Repeated Impact Loading Experiments with Digital ImageryZou, JunpengHu, XiaoyueJiao, Yu-YongChen, WeizhongWang, JinchaoShen, Luyi WesleyTang, ZhichengGong, Siyuanhttp://119.78.100.198/:80/handle/2S6PX9GI/355652023-08-21T06:09:49Z2023-08-02T08:12:04Z题名: Dynamic Mechanical Behaviors of Rock's Joints Quantified by Repeated Impact Loading Experiments with Digital Imagery
作者: Zou, Junpeng; Hu, Xiaoyue; Jiao, Yu-Yong; Chen, Weizhong; Wang, Jinchao; Shen, Luyi Wesley; Tang, Zhicheng; Gong, Siyuan
摘要: Joints widely exist in engineering rock masses and significantly affect their dynamic response to different loadings. Here, utilizing the state-of-the-art 3D laser scanning technology, which allows the digitalization of the joint surface's topography, and the Digital Image Correlation scanning technology that records the time series of the strain and mass point vibration, we build our unique experimental apparatus on the basis of a conventional split Hopkinson pressure bar with which we perform a series of repeated experiments on samples that are intact, with rough and smooth joint surfaces. This series of experiments provide us opportunities to look into the joint's dynamic mechanical behavior and energy evolution through multiple repeated impact loadings. We observe that the transmitted coefficient decreases with a larger joint roughness coefficient and the number of impacts. The stress wave and energy attenuation of rock masses with rough joints are much greater than those with smooth joints. Further, we observe the rough joints are more damaged than the smooth joints. The quantitative analysis carried through this experiment allows us to describe the process of a stress wave propagating through a joint in the rock mass with three consecutive stages: (1) joint closure; (2) joint compaction; and (3) coordinating deformation. The stress wave and energy attenuation of rock masses caused by the joint occur mainly at the stages 1 and 2.2023-08-02T08:12:04ZRemote Sensing for Surface Coal Mining and Reclamation Monitoring in the Central Salt Range, Punjab, PakistanAli, NafeesFu, XiaodongAshraf, UmarChen, JianHung Vo ThanhAnees, AqsaRiaz, Muhammad ShahidFida, MisbahHussain, Muhammad AfaqHussain, SadamHussain, WakeelAhmed, Awaishttp://119.78.100.198/:80/handle/2S6PX9GI/355632023-08-21T06:19:31Z2023-08-02T08:11:14Z题名: Remote Sensing for Surface Coal Mining and Reclamation Monitoring in the Central Salt Range, Punjab, Pakistan
作者: Ali, Nafees; Fu, Xiaodong; Ashraf, Umar; Chen, Jian; Hung Vo Thanh; Anees, Aqsa; Riaz, Muhammad Shahid; Fida, Misbah; Hussain, Muhammad Afaq; Hussain, Sadam; Hussain, Wakeel; Ahmed, Awais
摘要: The expansion and exploitation of mining resources are essential for social and economic growth. Remote sensing provides vital tools for surface-mining monitoring operations as well as for reclamation efforts in the central Salt Range of the Indus River Basin, Pakistan. This research demonstrates the applicability of remote sensing techniques to the coal mining monitoring scheme to allow for effective and efficient monitoring and to offset the adverse consequences of coal mining activities. Landsat 8 OLI images from June 2019 and 2020, and a Landsat 7 ETM+ image from June 2002, were used for this study. A three-phase methodology including Normalized Difference Vegetation Index (NDVI) analysis, land cover mapping, and change detection approaches was adopted. Image classification based on Tasseled Cap Transformation and the brightness temperature At-satellite using the K-means algorithm was implemented in a GIS program to identify seven land cover classes within the study area. The results show some level of surface disturbance to the landscape due to the coal mining reclamation activities that had taken place over the 18-year time period. From 2019 to 2020, about 3.622 km(2) of coal mines or barren land were converted into bare agricultural land. Over the years, it was also observed that reclamation areas exhibited higher values of NDVI than coal mining areas. The mean NDVI for coal mining areas was 0.252 km(2), and for areas of reclamation, it was 0.292 km(2) in 2020, while in 2019, the value for coal mining sites was 0.133 km(2), and 0.163 km(2) for reclamation sites. This trend suggests that coal-mining operations can be monitored using satellite data, and the progress of reclamation efforts can be assessed using satellite NDVI data from the target locations. This study is beneficial to agencies responsible for monitoring land cover changes in a coal mine because it provides a cost-effective, efficient, and robust scientific tool for making mine site allocation decisions and for monitoring the progress of reclamation efforts.2023-08-02T08:11:14ZSand-ratio distribution in an unconventional tight sandstone reservoir of Hangjinqi area, Ordos Basin: Acoustic impedance inversion-based reservoir quality predictionAnees, AqsaZhang, HucaiAshraf, UmarWang, RenThanh, Hung VoRadwan, Ahmed E.Ullah, JarAbbasi, Ghazanfer RazaIqbal, IbrarAli, NafeesZhang, XiaonanTan, ShuchengShi, Wanzhonghttp://119.78.100.198/:80/handle/2S6PX9GI/355612023-08-21T06:25:38Z2023-08-02T08:11:14Z题名: Sand-ratio distribution in an unconventional tight sandstone reservoir of Hangjinqi area, Ordos Basin: Acoustic impedance inversion-based reservoir quality prediction
作者: Anees, Aqsa; Zhang, Hucai; Ashraf, Umar; Wang, Ren; Thanh, Hung Vo; Radwan, Ahmed E.; Ullah, Jar; Abbasi, Ghazanfer Raza; Iqbal, Ibrar; Ali, Nafees; Zhang, Xiaonan; Tan, Shucheng; Shi, Wanzhong
摘要: Future gas field development and prospect assessment depend on accurate reservoir parameter characterization. The understanding of the tight sand distribution of the Shanxi and Taiyuan Formations within the Hangjinqi area is ambiguous due to the presence of coal and mudstone lithofacies, high heterogeneity, and poor resolution of the seismic data. Thus, it is difficult to determine the reservoir's thickness. To cope with this challenge, we have employed the advanced method of constrained sparse spike inversion (CSSI) utilizing 3D seismic and nine wells for the distinction of tight sandstone facies from the coal and mudstone facies. Results of petrophysical analysis of studied well J54 show that the coal and mudstone facies are dominant towards the T9c horizon, whereas tight sandstone facies are present towards the T9d horizon. The obtained findings show that the CSSI accurately identified the spatial distribution of sand-ratio in the zone of interest (ZOI) that lies between the T9c and T9d horizons. The acoustic impedance (AI) of coal shows the lowest AI values, whereas the tight sandstone shows the highest AI values. The tight sandstone facies shows moderate values of AI in the range of 8.5 x 10(6) kg/m(2)s to 1.20 x 10(7) kg/m(2)s. The impedance map of T9c suggested the presence of coal and mud facies, whereas the T9d impedance map suggest the presence of maximum tight sandstone facies. The sand-ratio map of T9d showed maximum reservoir thickness that ranges from 0.65-0-95, whereas the sand-ratio value mostly ranges from 0 to 0.5 on the T9c map. The maximum sand-ratio values on T9d show that the lower Shanxi Formation has good reservoir characteristics. Whereas, due to the presence of coal and mudstone in the Taiyuan Formation, the T9c map shows low values of sand-ratio. The maximum sand-ratio regions within the targeted T9c-T9d layers should be exploited for future gas explorations.2023-08-02T08:11:14ZTriple-objective optimization and electrochemical/technical/environmental study of biomass gasification process for a novel high-temperature fuel cell/electrolyzer/desalination schemeZhang, YaoSalem, MohamedElmasry, YasserHoang, Anh TuanGalal, Ahmed M.Nguyen, Dang Khoa PhamWae-hayee, Makatarhttp://119.78.100.198/:80/handle/2S6PX9GI/355642023-08-21T06:34:20Z2023-08-02T08:11:14Z题名: Triple-objective optimization and electrochemical/technical/environmental study of biomass gasification process for a novel high-temperature fuel cell/electrolyzer/desalination scheme
作者: Zhang, Yao; Salem, Mohamed; Elmasry, Yasser; Hoang, Anh Tuan; Galal, Ahmed M.; Nguyen, Dang Khoa Pham; Wae-hayee, Makatar
摘要: To meet demands in agricultural sectors, the way of waste-to-useful products is an alternative to conventional processes capable of generating on-site products. This is an innovative method leading to designing a novel combined system in the current work. By means of a precise chemical and electrochemical simulation, the rice husk (an agricultural biomass fuel) is processed through a gasifier with a steam agent and is utilized in a molten carbonate fuel cell. The fuel cell's waste heat is delivered to thermal-based desalination utilizing humification and dehumidification processes. In addition, a solid oxide electrolyzer cell creates hydrogen by consuming power supplied by the fuel cell. Consequently, the system is able to meet some demands like electricity, irrigation, and chemical fertilizers. Accordingly, the system's applicability is measured by comprehensive electrochemical, technical, and environmental sensitivity analyses along with an advanced triple-objective optimization using the method of artificial neural network (ANN) + multi-objective grey wolf optimization. Regarding the objective functions, i.e., exergetic efficiency (ExEtot), exergoenvironmental impact index (EIItot), and carbon dioxide emission (CDEtot), the optimum state brings ExEtot = 29.98%, EIItot = 2.28, and CDEtot = 391.1 kg/MWh. Also, the variability of studied variables is further affected by the fuel cell's current density; its mean sensitivity index equals 0.48.2023-08-02T08:11:14ZA perspective on applied geochemistry in porous media: Reactive transport modeling of geochemical dynamics and the interplay with flow phenomena and physical alterationDeng, HangGharasoo, MehdiZhang, LiweiDai, ZhenxueHajizadeh, AlirezaPeters, Catherine A.Soulaine, CyprienThullner, MartinVan Cappellen, Philippehttp://119.78.100.198/:80/handle/2S6PX9GI/355622023-08-21T06:38:01Z2023-08-02T08:11:14Z题名: A perspective on applied geochemistry in porous media: Reactive transport modeling of geochemical dynamics and the interplay with flow phenomena and physical alteration
作者: Deng, Hang; Gharasoo, Mehdi; Zhang, Liwei; Dai, Zhenxue; Hajizadeh, Alireza; Peters, Catherine A.; Soulaine, Cyprien; Thullner, Martin; Van Cappellen, Philippe
摘要: In many practical geochemical systems that are at the center of providing indispensable energy, resources and service to our society, (bio)geochemical reactions are coupled with other physical processes, such as multiphase flow, fracturing and deformation. Predictive understanding of these processes in hosting and evolving porous media is the key to design reliable and sustainable practices. In this article, we provide a brief review of recent developments and applications of reactive transport modeling to study geochemically driven processes and alteration in porous media. We also provide a perspective on opportunities and challenges for continuously developing and expanding the role of this valuable methodology to advance fundamental understanding and transferable knowledge of various dynamic geochemical systems.2023-08-02T08:11:14ZInternational experience of carbon neutrality and prospects of key technologies: Lessons for ChinaHou, Zheng-MengXiong, YingLuo, Jia-ShunFang, Yan-LiHaris, MuhammadChen, Qian-JunYue, YeWu, LinWang, Qi-ChenHuang, Liang-ChaoGuo, Yi-LinXie, Ya-Chenhttp://119.78.100.198/:80/handle/2S6PX9GI/355572023-08-21T06:43:07Z2023-08-02T08:11:13Z题名: International experience of carbon neutrality and prospects of key technologies: Lessons for China
作者: Hou, Zheng-Meng; Xiong, Ying; Luo, Jia-Shun; Fang, Yan-Li; Haris, Muhammad; Chen, Qian-Jun; Yue, Ye; Wu, Lin; Wang, Qi-Chen; Huang, Liang-Chao; Guo, Yi-Lin; Xie, Ya-Chen
摘要: Carbon neutrality (or climate neutrality) has been a global consensus, and international experience exchange is essential. Given the differences in the degree of social development, resource endowment and technological level, each country should build a carbon-neutral plan based on its national conditions. Compared with other major developed countries (e.g., Germany, the United States and Japan), China's carbon neutrality has much bigger challenges, including a heavy and time-pressured carbon reduction task and the current energy structure that is over-dependent on fossil fuels. Here we provide a comprehensive review of the status and prospects of the key technologies for low-carbon, near-zero carbon, and negative carbon emissions. Technological innovations associated with coal, oil-gas and hydrogen industries and their future potential in reducing carbon emissions are particularly explained and assessed. Based on integrated analysis of international experience from the world's major developed countries, in-depth knowledge of the current and future technologies, and China's energy and ecological resources potential, five lessons for the implementation of China's carbon neutrality are proposed: (1) transformation of energy production pattern from a coal-dominated pattern to a diversified renewable energy pattern; (2) renewable power-to-X and large-scale underground energy storage; (3) integration of green hydrogen production, storage, transport and utilization; (4) construction of clean energy sys-tems based on smart sector coupling (ENSYSCO); (5) improvement of ecosystem carbon sinks both in nationwide forest land and potential desert in Northwest China. This paper provides an international perspective for a better understanding of the challenges and opportunities of carbon neutrality in China, and can serve as a theoretical foundation for medium-long term carbon neutral policy formulation.(c) 2023 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/ 4.0/).2023-08-02T08:11:13ZA benchmark study of different numerical methods for predicting rock failureLi, Yi-MingZhao, Gao-FengJiao, YuyongYan, ChengzengWang, XunShen, LumingYang, LeiLiang, ZhengzhaoLi, WanrunZhou, XiaoxiongLi, XiaofengLiu, FengZhang, KaiyuLi, XingPan, ChengLe, Tianchenghttp://119.78.100.198/:80/handle/2S6PX9GI/355602023-08-21T06:52:22Z2023-08-02T08:11:13Z题名: A benchmark study of different numerical methods for predicting rock failure
作者: Li, Yi-Ming; Zhao, Gao-Feng; Jiao, Yuyong; Yan, Chengzeng; Wang, Xun; Shen, Luming; Yang, Lei; Liang, Zhengzhao; Li, Wanrun; Zhou, Xiaoxiong; Li, Xiaofeng; Liu, Feng; Zhang, Kaiyu; Li, Xing; Pan, Cheng; Le, Tiancheng
摘要: Nowadays, with many available numerical methods developed in rock mechanics, researchers have always focused on the parameter calibration of the numerical model but ignored the predictive capability of these methods. A comparative study of nine commonly used numerical methods was performed for predicting rock failure through international cooperation organized by the Discontinuous Deformation Analysis (DDA) commission of the International Society for Rock Mechanics (ISRM). Two steps of numerical modelling were conducted including a calibration procedure from given experimental results and a numerical prediction for benchmark tests with these calibrated parameters for three types of rocks. Through the comparison between different numerical and experimental results, the inherent weaknesses and strengths of different numerical methods in terms of predicting rock failure were identified and analysed. The influence of human intervention in terms of parameter selection is even more significant than the choice of different numerical methods. Some potential factors (i.e., different boundary conditions, heterogeneity of rock material, strength parameters, particle packing, and failure criteria) that may occur in numerical and physical tests were further discussed. Through the comparison of different failure criteria, we found the selection of rock failure criterion might be the major factor that affected the predictive capability of numerical methods, and the nonlinear failure model (the Hoek-Brown criterion) showed the superiority in the prediction of rock fracturing subjected to complex stress conditions. This comparative work also enlightens the significance of a high-quality calibration process and the future advancement of rock failure criteria.2023-08-02T08:11:13Z