Showing 81 - 100 results of 2,575 for search '"rock ', query time: 0.05s Refine Results
  1. 81
  2. 82
  3. 83

    Research on the Resonance Characteristics of Rock under Harmonic Excitation by Siqi Li, Shenglei Tian, Wei Li, Tie Yan, Fuqing Bi

    Published 2019-01-01
    “…In order to study the resonance characteristics of rock under harmonic excitation, two vibration models have been presented to estimate the natural frequency of rock encountered during the drilling. …”
    Get full text
    Article
  4. 84

    Researches on Damage Evolution and Acoustic Emission Characteristics of Rocks by Yong Chen, Yugui Yang, Feng Gao, Xiangxiang Zhang

    Published 2018-01-01
    “…Mechanical parameters of the rock are important for the design of geotechnical, mining engineering, and petroleum reservoir projects. …”
    Get full text
    Article
  5. 85

    Quantitative Analysis of the Topological Structure of Rock Pore Network by Dayu Ye, Guannan Liu, Ning Luo, Feng Gao, Xinmin Zhu, Fengtian Yue

    Published 2021-01-01
    “…As the most significant nonlinear reservoir, the rocks have complex structural characteristic. The pore structure of the rock is varied in shape and complex in connectivity. …”
    Get full text
    Article
  6. 86

    The Frequency Dependence of Poisson’s Ratio in Fluid-Saturated Rocks by Liming Zhao, Tongjun Chen, Xin Zhang, Tao Xing

    Published 2022-01-01
    “…We investigated the frequency dependence of Poisson’s ratio ν in partially/fully fluid-saturated rocks. Based on one dominant fluid flow mechanism at each condition, we theoretically summarized that (1) when a rock is partially saturated or transits from drained state to undrained state at full saturation, ν increases monotonously with frequency, and the associated attenuation 1/Qν is positive with one peak. (2) When the rock transits from undrained state to unrelaxed state at full saturation, there are three cases: 1) ν increases monotonously with frequency and has positive 1/Qν with one peak, 2) ν keeps constant with frequency and has no attenuation, 3) and ν decreases monotonously with frequency and has negative 1/Qν with one peak. …”
    Get full text
    Article
  7. 87
  8. 88

    Stability Analysis of Rock Slope with Multilayer Weak Interlayer by Jinglong Li, Bo Zhang, Bin Sui

    Published 2021-01-01
    “…The existence of the weak interlayer of the rock slope changes its mechanical characteristics. …”
    Get full text
    Article
  9. 89

    A Coupled Elastoplastic Damage Dynamic Model for Rock by Xuelong Hu, Ming Zhang, Xiangyang Zhang, Min Tu, Zhiqiang Yin, Haifeng Ma, Minke Duan

    Published 2021-01-01
    “…Rock dynamic constitutive model plays an important role in understanding dynamic response and addressing rock dynamic problems. …”
    Get full text
    Article
  10. 90

    Quantitative Characterization of Tight Rock Microstructure of Digital Core by Yuwei Liu, Shuping Wang, Rongchen Zheng, Haosen Li

    Published 2022-01-01
    “…This paper is helpful for quantitative evaluation of reservoir microscopic parameters and provides technical support for visualization and quantitative characterization of rock microstructure.…”
    Get full text
    Article
  11. 91

    Fractal Statistical Study on the Strength of Jointed Rock Mass by Fangtao Li, Zhiping Hu, Xiang Ren, Jiakuan Ma, Xuexu An, Yunxin Zheng, Yonghui Zhang

    Published 2022-01-01
    “…The failure probability and strength of jointed and fractured rock mass under water pressure action place important constraints on the safety and stability of rock mass engineering. …”
    Get full text
    Article
  12. 92

    Fractal Characteristic of Rock Cutting Load Time Series by Hongxiang Jiang, Changlong Du, Songyong Liu, Kuidong Gao

    Published 2014-01-01
    “…A test-bed was developed to perform the rock cutting experiments under different cutting conditions. …”
    Get full text
    Article
  13. 93

    Failure Process Simulation of Interlayered Rocks under Compression by Chi Yao, Sizhi Zeng, Jianhua Yang

    Published 2018-01-01
    “…Anisotropy in strength and deformation of rock mass induced by bedding planes and interlayered structures is a vital problem in rock mechanics and rock engineering. …”
    Get full text
    Article
  14. 94

    Influence of Microscopic Parameters on the Stress-Strain Relation in Rocks by Yanhui Cheng, Weijun Yang

    Published 2018-01-01
    “…This paper studies the influence of microscopical characteristic parameters, such as particle contact stiffness ratio, parallel bond stiffness ratio, particle contact modulus, and parallel bond elastic modulus, on the stress-strain relation in rocks, which shows that (1) The range of particle contact stiffness ratio kn/ks largely varies, but the stress-strain relation curve is relatively small. …”
    Get full text
    Article
  15. 95

    Characterization of Scoria Rock from Kisoro As an Aggregate in Concrete. by Ayebale, Sam

    Published 2023
    “…This research study highlights the characteristics of scoria rock from Kisoro as aggregates. The tests on both fine and coarse aggregates from scoria rock are presented in this report. …”
    Get full text
    Thesis
  16. 96

    Study on Zonal Cooperative Control Technology of Surrounding Rock of Super Large Section Soft Rock Chamber Group Connected by Deep Vertical Shaft by Shengrong Xie, Zaisheng Jiang, Dongdong Chen, En Wang

    Published 2022-01-01
    “…Aiming at solving the problem of asymmetric deformation, failure, and stability control of surrounding rock caused by the excavation of deep super large section soft rock chamber group passing through multilayer strata, taking super large section soft rock chamber group connected by deep vertical shaft in Wuyang Coal Mine as the engineering background, the deformation development mode of surrounding rock, the expansion situation of loosening range, and the plastic failure response characteristics in chamber group under the disturbance influence are monitored and numerically analyzed. …”
    Get full text
    Article
  17. 97
  18. 98
  19. 99

    Geochronology of the felsic rocks in Orijärvi, southern Finland – implications for stratigraphy by Elisa Toivanen, Teemu Vehkamäki, Markku Väisänen, Jaakko Kara, Hugh O’Brien

    Published 2025-01-01
    “…Previously, felsic volcanic rocks from the Orijärvi, Kisko and Toija formations have been dated at 1895 ± 3, 1878 ± 4 and 1878 ± 4 Ma, respectively. …”
    Get full text
    Article
  20. 100

    Interrelationships between Acoustic Emission and Cutting Force in Rock Cutting by Sifei Liu, Peng Shi, Zhijun Wan, Shuaifeng Lu, Jiakun Lv, Fanfei Meng

    Published 2021-01-01
    “…In this paper, full scale rock cutting tests are used to carry out single pick cutting experiments on three kinds of coal, and the acoustic emission (AE) signals of coal and rock cutting are monitored in the whole process. …”
    Get full text
    Article