Showing 201 - 220 results of 2,575 for search '"rock ', query time: 0.05s Refine Results
  1. 201

    Loading-Rate Dependence of Rocks in Postfailure Region under Triaxial Compression by Yang Tang, Seisuke Okubo, Jiang Xu, Hailong Zhang, Shoujian Peng

    Published 2018-01-01
    “…It is feasible to use nc to evaluate the loading-rate dependence of rocks in the postfailure region. (2) The loading-rate dependence of the rock strength increases with the increase in the confining pressure. …”
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    Article
  2. 202

    Research on Surrounding Rock Control Technology of Dongbaowei Deep Mining Roadway by Chengjia Wu, Tao Qin, Lei Wang, Zhi Liu

    Published 2021-01-01
    “…In order to explore the stability control of surrounding rock in the process of deep mining, comparative analysis of stress, deformation, and fracture characteristics of surrounding rock of deep and shallow mining roadway in dongbaotou coal mine, laboratory experiments, field measurement, numerical simulation, and field industrial experiments were adopted to put forward the control plan of the surrounding rock in deep roadway, which were verified by field industrial experiments. …”
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  3. 203

    Study on Influence of Joint Distribution on Surrounding Rock Failure of an Underground Tunnel by Wanrong Liu, Chao Peng, Baoliang Zhang

    Published 2021-01-01
    “…Due to geological structure and artificial disturbance, a large number of joints and fissures are formed in the surrounding rock of an underground tunnel. In order to study the influence of joints on the failure characteristics of tunnels, three test schemes with different joint lengths, joint spacing, and joint positions are designed. …”
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    Article
  4. 204

    Experimental Study on Compaction Characteristics and Mechanical Behavior of Crushed Rock Masses by Xiaolou Chi, Qiang Fu, Ke Yang

    Published 2022-01-01
    “…The results indicated that the compaction and consolidation of the crushed rock masses involved a constant adjustment of the contact and stress states of the rock masses. …”
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    Article
  5. 205

    The Comparative Study on the Damage Zones of Cylindrical and Spherical Charges in Rock and Soil by Qian Xu, Zhong-Qi Wang

    Published 2021-01-01
    “…To compare the damage zones of spherical and cylindrical charges in rock and soil, a quasistatic spherical model was established to predict the characteristic dimension of the cavity. …”
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    Article
  6. 206

    State Judgement Model of the Coal and Rock Medium and Its Engineering Application by Chuanqi Zhu, Lei Wang, Xiangang Han

    Published 2020-01-01
    “…To evaluate the damaging failure extent of the coal and rock mass and distinguish the state of the coal and rock mass medium, first, the medium state index was defined based on the acoustic wave propagation model. …”
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  7. 207

    Experimental and Numerical Study of Rock Stratum Movement Characteristics in Longwall Mining by Wan-rong Liu

    Published 2019-01-01
    “…To analyze the law of movement and caving of the roof rock stratum, the roof subsidence displacement, rock stratum stress, and the rock stratum movement law were analyzed by using the methods of the particle discrete element and similar material simulation test. …”
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  8. 208

    Numerical Built-In Method for the Nonlinear JRC/JCS Model in Rock Joint by Qunyi Liu, Wanli Xing, Ying Li

    Published 2014-01-01
    “…The joint surface is widely distributed in the rock, thus leading to the nonlinear characteristics of rock mass strength and limiting the effectiveness of the linear model in reflecting characteristics. …”
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    Article
  9. 209

    Numerical Study of Damage to Rock Surrounding an Underground Coal Roadway Excavation by Jiangbo Wei, Shuangming Wang, Zhou Zhao, Delu Li, Lipeng Guo

    Published 2020-01-01
    “…This study simulates deformation and damage in the rock surrounding a shallow coal seam roadway using particle flow code. …”
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    Article
  10. 210

    Bedding Plane Effects on Mechanical Behavior of Surrounding Rock in Mountain Tunneling by Shuang You, Jincui Sun, Hongtao Wang

    Published 2021-01-01
    “…The layered rock showed the characteristics in Mountain tunnel, Yunnan. …”
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    Article
  11. 211

    Study of Shear Capacity of Jointed Rock Mass with Prestressed Anchor Bolt by Yufei Zhao, Hongtao Zhang, Yong Nie

    Published 2019-01-01
    “…Rock mass failure caused by jointed plane is the common disaster in geotechnical engineering. …”
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  12. 212
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  15. 215

    Representative Sample Sampling Method for Size Effect Experiment of Jointed Rock Mass by Man Huang, Dan Liu, Chenjie Hong, Shigui Du, Zhanyou Luo, Changhong Li, Yongliang Huang

    Published 2020-01-01
    “…The influence of size effect on the hydromechanical behavior of rock mass has long been recognized. As a result, analysis of the rock mass size effect has been developed. …”
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  16. 216

    Analysis on Characteristics of Surrounding Rocks of Roadway and Bearing Structure Based on Stress Regulation by Ruofei Zhang, Guangming Zhao, Xiangrui Meng, Jian Sun, Wensong Xu, Yingming Li, Zenghui Liu, Siming Kao

    Published 2021-01-01
    “…Stability forms of the bearing structure of roadway surrounding rocks were analyzed by using the axis-changing theory from the perspectives of surrounding rock, mechanical properties of roadways, surrounding rock stress distribution, and mechanical mechanism of the bearing structure. …”
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  17. 217

    Uniaxial Compression Mechanical Properties of Rock Samples in Soft and Hard Composite Strata by Bo Wu, Wei Huang

    Published 2020-01-01
    “…In the upper soft and lower hard composite strata, it is very difficult to sample the rock and test the mechanical properties of the samples. …”
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  18. 218

    Study of Damage Constitutive Model of Brittle Rocks considering Stress Dropping Characteristics by Fei Li, Shuang You, Hongguang Ji, Hao Wang

    Published 2020-01-01
    “…Deep brittle rock exhibits characteristics of rapid stress dropping rate and large stress dropping degree after peak failure. …”
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  19. 219

    Experiment and Failure Analysis of Rock-Like Material Affected by Different Excavation Depths by Yuan Tian, Zhende Zhu, Xinyu Liu, Yanxin He

    Published 2021-01-01
    “…In order to increase the understanding of the strength and failure mechanism of rock mass during tunnel excavation, a series of uniaxial compression tests were conducted on mortar specimen with cracks and holes by using a rock mechanics servo-controlled testing system. …”
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  20. 220

    A Damaged Constitutive Model for Rock under Dynamic and High Stress State by Yan-Long Li, Zong-Yuan Ma

    Published 2017-01-01
    “…The main research work of this paper focuses on the theoretical prediction of the constitutive relationship for rock, concrete, and other quasi-brittle materials under dynamic and complex stress state and the influence of dynamic mechanical behavior of rock on practical engineering problems was studied. …”
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