Showing 41 - 60 results of 238 for search 'Backfist~', query time: 6.16s Refine Results
  1. 41

    Surface Subsidence Control during Deep Backfill Coal Mining: A Case Study by Baiyi Li, Nan Zhou, Wenyue Qi, Ailing Li, Zhizhong Cui

    Published 2020-01-01
    “…Furthermore, control strategies for deep backfill mining are proposed in which the backfill density can be enhanced by optimizing the tamping machine, material composition, and tamping process. …”
    Get full text
    Article
  2. 42

    An Investigation on the Influences of Construction Schemes on Backfilling the River-Crossing Section of a Utility Tunnel by Jin-Kun Huang, Zhao-Xiang Lu, Wan-Yun Yin, Ren-Cai Jin, Yuan-Di Qian, Si-Dong Shen, Lei Wang

    Published 2022-01-01
    “…The backfill construction of a utility tunnel is as important as its main structure construction. …”
    Get full text
    Article
  3. 43

    The Effect of Backfill Gas Pressure on the Thermal Response of a Dry Cask for Spent Nuclear Fuel by Michela Angelucci, Salvatore A. Cancemi, Rosa Lo Frano, Sandro Paci

    Published 2025-01-01
    “…On this basis, the present paper addresses the variation in the system heat removal capacity when considering different backfill gas pressures. In particular, the analysis, carried out with the MELCOR code, investigates the thermal response of the ventilated, concrete-based HI-STORM 100S cask, currently employed for spent fuel elements of Light Water Reactors (LWRs), when imposing different initial pressures for the helium backfill gas. …”
    Get full text
    Article
  4. 44

    Performance Comparison between Neutralization Tailings and Flotation Tailings Used for Backfill Mix and Mechanism Analysis by Bin Han, Wei Sun, Shaofeng Yu, Chao Liu, Song Yao, Jianxun Wu

    Published 2016-01-01
    “…A comparison test of different tailings used for underground backfill was conducted, using neutralized tailings from BIOX and flotation tailings of Jinfeng Mine. …”
    Get full text
    Article
  5. 45

    A Solution to the Time-Dependent Stress Distribution in Suborbicular Backfilled Stope Interaction with Creeping Rock by Baoxu Yan, Xingping Lai, Hanwen Jia, Erol Yilmaz, Chen Hou

    Published 2021-01-01
    “…The delayed backfilling weakens the backfill’s ground support effect on the nearby rock material. …”
    Get full text
    Article
  6. 46
  7. 47
  8. 48

    Investigating the Effect of Solid Components on Yield Stress for Cemented Paste Backfill via Uniform Design by Yong Wang, Aixiang Wu, Lianfu Zhang, Fei Jin, Xiaohui Liu

    Published 2018-01-01
    “…Cemented paste backfill (CPB) technology has been applied quite popular around the world. …”
    Get full text
    Article
  9. 49

    Dynamic Shear Properties of Recycled Waste Steel Slag Used as a Geo-Backfill Material by Liyan Wang, Jiatao Yan, Qi Wang, Binghui Wang, Wenxue Gong

    Published 2019-01-01
    “…Waste steel slag is a recycled industrial solid waste and is sometimes used as backfills, but the dynamic shear properties of waste steel slag have not been researched at present. …”
    Get full text
    Article
  10. 50

    Study on Dynamic Mechanical Properties of Full Tailings Cemented Backfilling Impacted by Cement-Sand Ratio by Shan Yang, Zhiyong Zhou, Yifei Zhao, Wei Yang

    Published 2018-01-01
    “…In order to study the effect of cement-sand ratio on the dynamic mechanical properties of the full tailings cemented backfilling, three sets of full tailings cemented backfilling specimens with different cement-sand ratios were prefabricated. …”
    Get full text
    Article
  11. 51

    Effect of Tailings Fine Content on the Properties of Cemented Paste Backfill from the Perspective Packing Density by Haijun Wang, Xiaogang Sun, Jianwen Wang, Yun Duan, Changsuo Zhang, Jingping Qiu, Zhenbang Guo

    Published 2021-01-01
    “…In order to quantitatively study the influence of tailings fine content on the properties of cemented paste backfill (CPB) and further understand the mechanism of tailings fine content acting, the concept of packing density was introduced in this study. …”
    Get full text
    Article
  12. 52
  13. 53

    Experimental investigation on the anti-detonation performance of composite structure containing foam geopolymer backfill material by Hang Zhou, Hujun Li, Zhen Wang, Dongming Yan, Wenxin Wang, Guokai Zhang, Zirui Cheng, Song Sun, Mingyang Wang

    Published 2025-01-01
    “…Additionally, the foam geopolymer backfill reduced structural vibration and liner deformation, with the FGCS structure showing 35% less displacement and 70% less acceleration compared to the CLS. …”
    Get full text
    Article
  14. 54

    Study on the Strength Development of Cemented Backfill Body from Lead-Zinc Mine Tailings with Sulphide by Juanrong Zheng, Lijie Guo, Xiaoxiao Sun, Wenchen Li, Qi Jia

    Published 2018-01-01
    “…The unconfined compressive strength (UCS) development of cemented backfill materials for lead-zinc mine tailings with sulphide was studied. …”
    Get full text
    Article
  15. 55

    Experimental Study on Mechanical Properties of Cemented Paste Backfill under Temperature-Chemical Coupling Conditions by Yin Liu, Hao Li, Haifeng Wu

    Published 2019-01-01
    “…To investigate the effect of temperature-chemical coupling on the mechanical properties of cemented paste backfill, three temperatures (20°C, 35°C, and 50°C) and sodium sulfate solution mass concentrations (3%, 5%, and 7%) are applied to simulate the complex environment in a mine. …”
    Get full text
    Article
  16. 56

    A key technology for synergistic backfilling of coal-based solid waste and high-salinity wastewater by Shuning DONG, Shujiang YU, Xingling DONG, Buqin ZHANG, Xiaoming GUO, Xiaodong WANG, Kai WANG, Shibin ZHU, Boqiang WU, Lei LIU

    Published 2025-01-01
    “…Methods This study developed a technology for the synergistic treatment of coal-based solid waste and high-salinity wastewater (also referred to as solid-liquid synergistic waste backfilling). Specifically, high-salinity water, rather than ordinary water and additives such as early strength agent, and solid waste cementitious materials—used to replacing part of cement, were mixed while stirring to produce filling paste, which was then pumped to the underground goaves of coal mines. …”
    Get full text
    Article
  17. 57

    Stability Analysis and Confidence Level Evaluation of Backfill Mining under High and Steep Rock Slopes by Bo-yi Hu, Xin-min Wang, Shuai Li, Jian-wen Zhao, Nyandwe Musonda Eugénie

    Published 2018-01-01
    “…A series of laboratory tests were conducted to obtain the engineering parameters of the rock mass, and the mechanism of action of the backfill mining method was analyzed. After the stability analysis, the average safety factors of HSRS for normal operation are 1.575 (backfill method) and 1.509 (open-stope method), and for seismic conditions, they are 1.470 (backfill method) and 1.380 (open-stope method). …”
    Get full text
    Article
  18. 58

    Rheological Parameters and Transport Characteristics of Fresh Cement Tailings Backfill Slurry in an Underground Iron Mine by Chi Zhang, Yu-Ye Tan, Kai Zhang, Chun-Yue Zhang, Wei-Dong Song

    Published 2021-01-01
    “…In this study, fresh cement tailing backfill (CTB) slurry made by unclassified tailings from the Daye iron mine is taken as the research object, and its rheological parameters and transport characteristics are studied via laboratory test and FLUENT software. …”
    Get full text
    Article
  19. 59

    Effect of Desliming of Tailings on the Fresh and Hardened Properties of Paste Backfill Made from Alkali-Activated Slag by Ferdi Cihangir, Yunus Akyol

    Published 2020-01-01
    “…Cemented paste backfill (CPB) allows environmental friendly management of potentially hazardous tailings generated from milling of nonferrous metal sulphide ores by placing such tailings into the underground mined-out openings. …”
    Get full text
    Article
  20. 60

    Permeability of Sand-Based Cemented Backfill under Different Stress Conditions: Effects of Confining and Axial Pressures by Cunli Zhu, Jixiong Zhang, Nan Zhou, Meng Li, Yaben Guo

    Published 2021-01-01
    “…Sand-based cemented backfill (SBCB) mining technology is instrumental in utilizing coal resources buried under the water bodies. …”
    Get full text
    Article