Showing 761 - 780 results of 2,575 for search '"Rock ', query time: 0.08s Refine Results
  1. 761

    Investigation on Nonlinear Flow Behavior through Rock Rough Fractures Based on Experiments and Proposed 3-Dimensional Numerical Simulation by Xianshan Liu, Man Li, Nandou Zeng, Tao Li

    Published 2020-01-01
    “…Rock fractures as the main flow channels, their morphological features, and spatial characteristics deeply influence the seepage behavior. …”
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    Article
  2. 762

    Macro-Micro Response Characteristics of Surrounding Rock and Overlying Strata towards the Transition from Open-Pit to Underground Mining by Xiaoshuang Li, Shun Yang, Yunmin Wang, Wen Nie, Zhifang Liu

    Published 2021-01-01
    “…The internal distribution of stress in the surrounding rock and adjacent overlying strata of the inclined mined-out area is complicated. …”
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    Article
  3. 763

    Study on the Safety Thickness of Rock Strata for Outburst Prevention in Deep Tunnel Based on Numerical Modeling and Backpropagation Neural Network by Zhensheng Cao, Jiazhu Liu, Shaoqiang Zhang, Bowen Li, Zhenhu Zhang, Zhongjie Wang, ChenChen Jiang

    Published 2023-01-01
    “…The results show that the thickness of the safe rock strata increases with increasing water pressure, lateral pressure coefficient, fault fracture zone width, and tunnel burial depth. …”
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    Article
  4. 764

    Prevalence of Toxoplasma gondii, Neospora caninum, and Sarcocystis Species DNA in the Heart and Breast Muscles of Rock Pigeons (Columbia livia) by Muhammad Mudasser Nazir, Muhammad Mazhar Ayaz, Atif Nisar Ahmed, Azhar Maqbool, Kamran Ashraf, Muhammad Oneeb, Ghulam Yasin, Atta Subhani, Muhammad Asif Ali, Noman Nazir, Muhammad Afzal Sajid

    Published 2018-01-01
    “…Little is known about the prevalence of protozoan parasites in the muscles of rock pigeons (Columbia livia). The muscles from 54 (heart from 45 and breast from 54) rock pigeons were examined for DNA of Toxoplasma gondii, Neospora caninum, and Sarcocystis species using PCR. …”
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    Article
  5. 765

    A New Evaluation Method of Total Organic Carbon for Shale Source Rock Based on the Effective Medium Conductivity Theory by Jian Fu, Xuesong Li, Yonghe Sun, Qiuli Huo, Ting Gao, Li Fu, Yuchen Liu, Suxing Dong, Haijun Fan

    Published 2021-01-01
    “…In the evaluation of source rocks, the total organic carbon (TOC) is an important indicator to evaluate the hydrocarbon generation potential of source rocks. …”
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    Article
  6. 766

    Damage of Rock Mass by Double-Hole Blasting with Slit Charge and Development of Stress Wave under High In Situ Stress by Jianyu Zhang, Zegong Liu, Shigui Fu, Guodong Qiao

    Published 2022-01-01
    “…To study the influence of high ground stress on crack propagation and stress propagation during deep rock blasting, a theoretical model of blasting stress wave propagation and rock damage under in situ stress conditions is developed. …”
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    Article
  7. 767
  8. 768
  9. 769

    A Study on the Dynamic Transmission Law of Spiral Drum Cutting Coal Rock Based on ANSYS/LS-DYNA Simulation by Lijuan Zhao, Hongmei Liu, Wenchao Zhou

    Published 2019-01-01
    “…Based on the dynamic analysis of the coal and rock that were cut by the spiral drum, the stress cloud diagram of the coupled model of the spiral drum and the coal and the plastic domain evolution law of the coal and the rock were obtained from the coal to the rock. …”
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    Article
  10. 770

    Study on the Stability of a Transition Section from Soft to Hard Surrounding Rock Based on the Solid-Fluid Coupling Effect by Qizhi Hu, Yixin Tang, Zhigang Ding

    Published 2020-01-01
    “…The design values of the primary support structure parameters of the transition section from soft to hard surrounding rock of the Laomushan Tunnel basically met the strength requirements. …”
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    Article
  11. 771

    Review and syntheses: Ocean alkalinity enhancement and carbon dioxide removal through marine enhanced rock weathering using olivine by L. J. J. Geerts, A. Hylén, F. J. R. Meysman, F. J. R. Meysman

    Published 2025-01-01
    “…<p>Marine enhanced rock weathering (mERW) is increasingly receiving attention as a marine-based carbon dioxide removal (CDR) technology. …”
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    Article
  12. 772

    Instability Mode and Control Technology of Surrounding Rock in Composite Roof Coal Roadway under Multiple Dynamic Pressure Disturbances by Peng Wang, Nong Zhang, Jiaguang Kan, Xingliang Xu, Guangzhen Cui

    Published 2022-01-01
    “…The deflection of the roadway roof and the extent of the plastic zone are negatively correlated with the distance from the soft rock layer to the roadway but positively correlated with the thickness of the soft rock layer. …”
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    Article
  13. 773
  14. 774

    Evaluation of Residual Geo-mechanical Characteristics of Rocks from Akure, Ado-Ekiti and Ikare-Akoko Quarries in Southwest Nigeria by T. A. Oluwadero, O. W. Osisanya, F. Z. Ajibade

    Published 2025-02-01
    “… The objective of this paper is to evaluate the Residual Geo-mechanical Characteristics of Rocks from Akure, Ado-Ekiti and Ikare-Akoko Quarries in Southwest Nigeria using appropriate standard techniques.Data obtained show that residual ultimate compressive strength (UCS) values under in-situ circumstances were, in order, 70.56 MPa, 72.9 MPa, and 76.27 MPa. …”
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    Article
  15. 775

    Geochemistry and human health risks of heavy metals in soils from gold mineralized Birimian rocks in Southwestern Burkina Faso by Kadidiatou Coulibaly, Aboubakar Sako

    Published 2025-12-01
    “…This study aims to identify sources and health risks of a series of heavy metals in topsoil from Birimian basement rocks in southwestern Burkina Faso. Concentrations of geochemical data of 66 samples were determined using ICP-MS. …”
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    Article
  16. 776

    Study on Deformation and Stability of Rock-Like Materials Retaining Structure during Collaborative Construction of Super-Adjacent Underground Project by Hongfu Qu, Lihua Wang, Chunlei Feng, Hualao Wang, Xuan Zhang

    Published 2021-01-01
    “…In view of these characteristics, this paper studied the deformation and stability of rock-like material retaining structures in the process of underground engineering collaboration by combining the measured deformation data and the circular slide theory based on the limit equilibrium method. …”
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    Article
  17. 777

    Experimental Study on Sedimentary Rock’s Dynamic Characteristics under Creep State Using a New Type of Testing Equipment by Wanpeng Huang, Wenbin Xing, Shaojie Chen, Yang Liu, Kai Wu

    Published 2017-01-01
    “…Under high stress, rock in the creep state is vulnerable to external impact load, causing the irreversible perturbation deformation of rock or even sudden failure. …”
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    Article
  18. 778

    Study on Reasonable Size of Coal and Rock Pillar in Dynamic Pressure Roadway Segment of Fully Mechanized Face in Deep Shaft by Binyang Sun, Pingsong Zhang, Haifeng Lu

    Published 2020-01-01
    “…The deformation mechanism of the protective coal and rock pillar area outside a stope is an important parameter for setting a reasonable size. …”
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    Article
  19. 779

    Analysis of Cumulative Damage for Shared Rock in a Neighborhood Tunnel under Cyclic Blasting Loading Using the Ultrasonic Test by Feng Cao, Sheng Zhang, Tonghua Ling

    Published 2020-01-01
    “…In blasting excavation of neighborhood tunnels, damage accumulation process in surrounding rock is inevitable. To explore the influence of damage accumulation of rock mass under multiple blasting loads, we analyzed the vibration damage accumulation process of ultrasonic wave velocity of rock mass in shared rock of Liuyuetian neighborhood tunnel through ultrasonic test. …”
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    Article
  20. 780

    Analysis on the Influence Degree of Deformation Control Factors of Deep-Buried Roadway’s Fractured Surrounding Rock Using Orthogonal Design by Ke Li, Weijian Yu, Youlin Xu, Ze Zhou, Mengtang Xu, Wei Liang

    Published 2021-01-01
    “…Through the roadway surrounding rock drilling, it was found that the stress of the surrounding rock was relieved, resulting in the cavity and separation of the stratum layer. …”
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    Article