Showing 721 - 740 results of 2,575 for search '"Rock ', query time: 0.08s Refine Results
  1. 721

    Collaborative control technology and application of support and modification for soft-rock roadway in a kilometer-deep coal mine by En Wang, Shuaifeng Yin, Xuexi Chen, Ze Gao, Aiguo Sun, Yitao Yan

    Published 2025-01-01
    “…Abstract The soft-rock roadways in kilometer-deep coal mines are often damaged by large deformation and have to be periodically expanded and repaired, which seriously restricts the safe and efficient production of coal mines. …”
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    Article
  2. 722

    Failure and development height of overlying rock of a water flowing fracture in goaf under a karst aquifer by Lulin Zheng, Xiong Liu, Qing Qiu, Youwen Tian, Weide Ren, Jin Xu, Xiaokun Wang

    Published 2025-01-01
    “…This study focuses on the Longfeng Coal Mine, northern Guizhou coalfield. Samples of rock from the roof coal seam were obtained by drilling and coring and examined under a scanning electron microscope. …”
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    Article
  3. 723

    The Effect of Blast-Hole Arrangement, Delay Time, and Decoupling Charge on Rock Damage and Vibration Attenuation in Multihole Blasting by H.Z. Yue, C. Yu, H.B. Li, C.B. Zhou, S.H. Chen, Z.S. Shao

    Published 2022-01-01
    “…Rock damage and vibration attenuation are the basis of blasting design, which will affect rock breaking results and the safety of structures (buildings). …”
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    Article
  4. 724

    HANNAH ARENDT E A QUESTÃO NEGRA NA DESSEGREGAÇÃO DA ESCOLA DE LITTLE ROCK, 1957 by Danilo Arnaldo Briskievicz, Amauri Carlos Ferreira

    Published 2019-06-01
    “…O objetivo deste artigo é discutir o caso de dessegregação racial educacional acontecido na capital do Arkansas, Little Rock, nos Estados Unidos da América, em 4 de setembro de 1957. …”
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    Article
  5. 725

    Change Detection and Feature Extraction of Debris-Flow Initiation by Rock-Slope Failure Using Point Cloud Processing by Xiaoying He, Zeqing Yu, John M. Kemeny, Ann Youberg, Yunkun Wang

    Published 2021-01-01
    “…Our understanding of debris-flow initiation by slope failure is restricted by the challenge of acquiring accurate geomorphic features of debris flows and the structural setting of the rock mass in the remote mountainous terrain. Point cloud data of debris flows in Sabino Canyon, Tucson, Arizona, July 2006, with initiation by joint-controlled rock slope were obtained using multitemporal LiDAR scanning. …”
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    Article
  6. 726

    Uniaxial Experimental Study of the Deformation Behavior and Energy Evolution of Conjugate Jointed Rock Based on AE and DIC Methods by Jiliang Pan, Xu Wu, Qifeng Guo, Xun Xi, Meifeng Cai

    Published 2020-01-01
    “…Conjugate joint is one of the most common joint forms in natural rock mass, which is produced by different tectonic movements. …”
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    Article
  7. 727

    Construction of Three-Dimensional Crack Calculation Method for Transparent Rock-Like Materials Based on Stereo Vision Principle by Shu Zhu, Zhihua Luo, Zhu Zhende, Yufeng Gao, Nan Wu

    Published 2019-01-01
    “…Disasters of deep underground caverns often occur during excavation or operation stage, which is closely related to the growth and evolution of surrounding rock cracks. The understanding of spatial distribution of internal cracks in rock mass is the key to reveal its deformation and failure mechanism. …”
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    Article
  8. 728

    A Novel Model Using Virtual State Variables and Bayesian Discriminant Analysis to Classify Surrounding Rock Stability by Jinglai Sun, Darui Ren, Yu Song, Mingyuan Yu, Zhaofei Chu, Baoguo Liu, Shaogang Li, Xinyang Guo

    Published 2021-01-01
    “…To accurately classify the stability of surrounding rock masses, a novel method (VSV-BDA) based on virtual state variables (VSVs) and Bayesian discriminant analysis (BDA) is proposed. …”
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    Article
  9. 729

    Experimental Analysis of Deformation Mechanics and Stability of a Shallow-Buried Large-Span Hard Rock Metro Station by Wei Li, Jiwen Bai, Kexian Li, Shijie Zhang

    Published 2020-01-01
    “…Based on a certain Qingdao metro station, a large-scale three-dimensional model test has been carried out to investigate the stability of the surrounding rock masses (hard rock) and a large-span metro station under different excavation methods and technologies. …”
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    Article
  10. 730
  11. 731

    The Influence of Moisture Content on the Time-Dependent Characteristics of Rock Material and Its Application to the Construction of a Tunnel Portal by Xiaojun Liu, Chao Yang, Jing Yu

    Published 2015-01-01
    “…The results show that the influence of moisture and creep of the surrounding rocks is needed for estimating the deformation of complex tunnel portals.…”
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    Article
  12. 732

    Mechanical Mechanism and Propagation Law of Fissure-Tip Cracks of Large-Size Rock Specimens with Two Precut Fissures by Liming Yin, Ming Li, Wenbin Sun, Juntao Chen, Bin Liu, Ziqi Wang

    Published 2021-01-01
    “…The rock is a kind of geological medium with damages of different degrees including fissures, faults, joints, and other structural defects. …”
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    Article
  13. 733

    Energy Evolution Law of Ore-Bearing Rock during Unloading under High Static Stress and Frequent Disturbance by Chun Wang, Mei-zhi Xie, Zu-qiang Xiong, Cheng Wang, Lu-ping Cheng

    Published 2020-01-01
    “…Based on the complex engineering environment in deep rock engineering, preloaded high axial pressure, unloading of axial pressure, and impact loading were used to simulate high in situ stress, unloading of excavation, and blasting disturbance, respectively; the experimental study on frequent impact disturbances under unloading of high static load was carried out, which aimed at revealing the energy evolution law of rock. …”
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    Article
  14. 734

    Investigating the Effect of the Rock-Socketed Depth of the Hinged Cable-Anchored Pile on the Earthquake Response Characteristics of Supporting Structures by A. Fa-you, Ming-chang Hei, Shi-qua Yan, Peng Zhang

    Published 2022-01-01
    “…The obtained results show that the rock-socketed depth significantly affects the seismic response of the pile-anchor system. …”
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    Article
  15. 735

    Preliminary Study on High-Energy and Low-Energy Microfracture Event Evolution Characteristics in the Development Process of Rock Failure by Guofeng Yu, Guanwen Cheng, Lianchong Li, Chunan Tang, Bo Ren, Yunchun Han

    Published 2020-01-01
    “…The evolution characteristics of high-energy and low-energy microfracture events play an important role in the brittle failure mechanism of rock and reasonable microseismic (MS) monitoring and acoustic emission (AE) monitoring. …”
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    Article
  16. 736

    Recycling phosphate mine waste rocks in asphalt mixtures to fully replace natural aggregate: A preliminary study by Fadi Alhomaidat, Mazen J. Al-Kheetan, Sajedah M. Alosifat

    Published 2025-03-01
    “…Mining activities generate large quantities of waste rocks that pose significant challenges to the environment due to their disposal in landfills, making their incorporation in asphalt mixtures a vigorous solution. …”
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    Article
  17. 737

    Research on Optimal Design of Pressure Relief Blasting Parameters of Middle Rock Pillar in Near Vertical Coal Seam by Yadi Wang, Shiqi Yu, Hai Rong, Liting Pan

    Published 2022-01-01
    “…A presplitting blasting pressure relief technology of drilling a construction chamber in the middle of the rock column is proposed to form a buffer layer in the rock wall and effectively prevent the continuous downward movement of stress. …”
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    Article
  18. 738
  19. 739

    Dying to be famous: retrospective cohort study of rock and pop star mortality and its association with adverse childhood experiences by Mark A Bellis, Karen Hughes, Olivia Sharples, Tom Hennell, Katherine A Hardcastle

    Published 2012-12-01
    “…Objectives Rock and pop fame is associated with risk taking, substance use and premature mortality. …”
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  20. 740

    Particle Flow Analysis of Macroscopic and Mesoscopic Failure Process of Salt Rock under High Temperature and Triaxial Stress by Haoran Li, Ziheng Wang, Dekang Li, Yajun Zhang

    Published 2021-01-01
    “…In order to reveal the mechanism of thermal-induced deformation and fracture development of salt rock under high temperature, the particle flow program PFC2D was used to study the triaxial compression failure process of salt rocks under different temperatures; at the same time, a combination model of Burge and Linearpbond was proposed to simulate plastic deformation and heat conduction of salt rock. …”
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    Article