WU Zhang, HE Kun, WANG Zengqi, TIAN Huaguang. Passive anchoring mechanism of micropile system[J]. COAL GEOLOGY & EXPLORATION, 2012, 40(6): 53-57. DOI: 10.3969/j.issn.1001-1986.2012.06.012
Citation: WU Zhang, HE Kun, WANG Zengqi, TIAN Huaguang. Passive anchoring mechanism of micropile system[J]. COAL GEOLOGY & EXPLORATION, 2012, 40(6): 53-57. DOI: 10.3969/j.issn.1001-1986.2012.06.012

Passive anchoring mechanism of micropile system

More Information
  • Received Date: May 29, 2012
  • Available Online: October 26, 2021
  • Based on the achievement of the predecessors' research on micropiles, supporting system of the micropile horizontal resistance function is studied through the laboratory test. It is pointed out that the horizontal resistance force can be ignored and the rigid joint or hinged joint concrete beam are fixed on pile top in order to improve the slippery body of anchorage force and reduce sliding body deformation. Through the analysis of the model, the passive anchorage mechanism about landslide reinforcement of micropiles was discussed, and the calculation formula of the anchoring force under the control of the strength of steel was deduced. And the micropile anchor is compared to the anchor rod (cable), it is put forward that the length of anchoring section should be more than 6 m in rock formation and 8 m in the soil layer. The anchorage force depends on the smaller one between "C" which is determined by material strength and "Tu" which depends on the stratus condition. In the end, the feasibility of micropile control of the landslide and the reliability of the calculation method through an engineering example have been proved.
  • Related Articles

    [1]FAN Xin, CHENG Jianyuan, LI Sheng, DUAN Jianhua, FAN Tao, LI Bofan, WANG Yanbo. Application of microseismic monitoring system for coal mines to the prevention and control of water disasters on working face roofs[J]. COAL GEOLOGY & EXPLORATION, 2024, 52(6): 115-127. DOI: 10.12363/issn.1001-1986.24.03.0230
    [2]LI Zhi, ZHENG Shitian, SHI Zhiyuan, WANG Yuhang. Prevention and control technology of goaf water hazard in unauthorized mining areas of extremely soft and medium-thick coal seams[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(6): 167-174. DOI: 10.3969/j.issn.1001-1986.2021.06.020
    [3]ZHANG Wenquan, WANG Zaiyong, WU Xintao, SHAO Jianli, LEI Yu, WU Xunan. Investigation and simutation on the model and prevention technology of water inrush from roof bed separation[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(1): 217-224,231. DOI: 10.3969/j.issn.1001-1986.2021.01.023
    [4]WANG Hao, DONG Shuning, QIAO Wei, JI Yadong, ZHU Kaipeng, ZHOU Zhenfang, NING Dianyan, SHANG Hongbo. Construction and application of remote service cloud platform for mine water hazard prevention and control[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(1): 208-216. DOI: 10.3969/j.issn.1001-1986.2021.01.022
    [5]HUANG Xuanming, ZHANG Yan, LI Wensong, TIAN Zenglin. Summary of water disaster characteristics and water prevention and control technology in open-pit coal mines in China[J]. COAL GEOLOGY & EXPLORATION, 2020, 48(4): 53-60. DOI: 10.3969/j.issn.1001-1986.2020.04.008
    [6]REN Dengjun, SUN Yayue, LI Jianyang. Hydrochemical characteristics and control of water hazard from coal seam roof in Gaojiabao coal mine[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(S1): 26-31. DOI: 10.3969/j.issn.1001-1986.2019.S1.005
    [7]LI Wei, WU Jiwen, ZHAI Xiaorong. Evaluation of goaf water hazard and its prevention and control technology of abandoned coal mines in Zhahe mining area of Huaibei[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(S1): 16-22. DOI: 10.3969/j.issn.1001-1986.2018.S1.004
    [8]FANG Gang, JIN Dewu. Research on the roof stratifugic water inrush mechanism and control in Tongchuan Yuhua coal mine[J]. COAL GEOLOGY & EXPLORATION, 2016, 44(3): 57-64. DOI: 10.3969/j.issn.1001-1986.2016.03.011
    [9]MA Lei, QIAN Jiazhong, ZHAO Weidong, ZHOU Xiaoping. GIS-based decision-making support system for prevention and control of water hazards in coal mines[J]. COAL GEOLOGY & EXPLORATION, 2014, 42(5): 44-49. DOI: 10.3969/j.issn.1001-1986.2014.05.009
    [10]MIAO Wentao, MIAO Hekun, NIU Zhongping. The water gushing features of non-native water-filled aquifer and methods for water prevention and control[J]. COAL GEOLOGY & EXPLORATION, 2013, 41(2): 46-50. DOI: 10.3969/j.issn.1001-1986.2013.02.011
  • Cited by

    Periodical cited type(3)

    1. 白杰. 基于PFC~(3D)的裂隙红砂岩冻融破坏特征研究. 煤炭工程. 2025(02): 171-179 .
    2. 张玉军,李友伟,肖杰,张志巍,李嘉伟. 坚硬覆岩预裂弱化改性效应及导水裂缝带控制机理. 煤炭科学技术. 2024(04): 105-118 .
    3. 范相如,李宪国,许峰,高树磊,党亚堃. 基于VIC-3D监测的相似材料模拟导水裂隙带发育规律研究. 能源与环保. 2024(08): 229-234+241 .

    Other cited types(0)

Catalog

    Article Metrics

    Article views PDF downloads Cited by(3)
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return