LIU Zhimin, LIU Xigao, DO Yibo, ZHANG Jintao, WU Miao. Calculation method and analysis of influence factors of the grounding resistance in electrical measurement[J]. COAL GEOLOGY & EXPLORATION, 2015, 43(2): 96-100.105. DOI: 10.3969/j.issn.1001-1986.2015.02.020
Citation: LIU Zhimin, LIU Xigao, DO Yibo, ZHANG Jintao, WU Miao. Calculation method and analysis of influence factors of the grounding resistance in electrical measurement[J]. COAL GEOLOGY & EXPLORATION, 2015, 43(2): 96-100.105. DOI: 10.3969/j.issn.1001-1986.2015.02.020

Calculation method and analysis of influence factors of the grounding resistance in electrical measurement

More Information
  • Received Date: October 22, 2013
  • Available Online: October 21, 2021
  • The grounding resistance must be reasonably calculated and reduced in order to improve the observation accuracy and quality, enhance the immunity of electromagnetic coupling when using electrical measurement. It can be reckoned according to the current field property and the conductor resistance definition. Through using MATLAB software, this paper simulates and analyzes the grounding resistance changes with the electrode radius, the buried depth and the covered distance by the soil from the rod electrode surface so as to determine its main size. Since the electrode size is generally relatively fixed, the methods of reducing the grounding resistance are mainly through reducing soil resistivity near the electrode and paralleling the grounding electrodes. Through the simulation analysis of the grounding resistance variation with the covered radius of replacement soil and the coefficient of assembling and shielding effect variation with the electrode spacing, we can draw the conclusion that the covered radius of replacement soil is taken within the range of 100~150 cm and the electrode spacing is twice greater than that of the buried depth. Now the grounding effect is the best.
  • Related Articles

    [1]WANG Gang, JIANG Chenghao, CHEN Xuechang. Numerical simulation of pore structure stress characteristics of coal and rock mass[J]. COAL GEOLOGY & EXPLORATION, 2021, 49(1): 57-64,80. DOI: 10.3969/j.issn.1001-1986.2021.01.006
    [2]MIN Feihu, XIANG Biwei, LIU Hui, ZHU Xiaojun. Numerical simulation on mechanism of thrust fault reactivation during mining[J]. COAL GEOLOGY & EXPLORATION, 2019, 47(4): 144-152. DOI: 10.3969/j.issn.1001-1986.2019.04.022
    [3]LIU Zuiliang, FENG Meimei. Numerical simulation study on the development patterns of tectonically deformed coal in Xinjing coal mine in Yangquan[J]. COAL GEOLOGY & EXPLORATION, 2018, 46(4): 35-43. DOI: 10.3969/j.issn.1001-1986.2018.04.006
    [4]ZHI Min. High-order implicit finite difference numerical simulation of acoustic wave equation[J]. COAL GEOLOGY & EXPLORATION, 2016, 44(2): 106-111. DOI: 10.3969/j.issn.1001-1986.2016.02.019
    [5]SHI Yu-ling, MEN Yu-ming, PENG Jian-bing, HUANG Qiang-bing. Numerical simulation of reversed ground-fissure cracking and extending in loess[J]. COAL GEOLOGY & EXPLORATION, 2009, 37(5): 47-50. DOI: 10.3969/j.issn.1001-1986.2009.05.011
    [6]HUANG Sen-lin. Study on stability of overburden stratum structure by numerical simulation for shallow coal seam[J]. COAL GEOLOGY & EXPLORATION, 2007, 35(3): 25-28.
    [7]ZHU Ji-yong, XU Guang-quan, GONG Gu-pei. Numerical simulation with effective reinforced area of dynamic consolidation[J]. COAL GEOLOGY & EXPLORATION, 2001, 29(2): 39-43.
    [8]Li Yulin, Yang Xilu, Chen Zhida, Yang Chenyong. LARGE DEFORMATION NUMERICAL MODELING OF HOMOGENOUS MUTI-LAYERS FOLDS[J]. COAL GEOLOGY & EXPLORATION, 1999, 27(1): 4-6.
    [9]WEI Zhong-tao, LIU Huan-jie, MENG Jian. NUMERICAL SIMULATION ON COALBED METHANE DIFFUSION IN GEOHISTORY[J]. COAL GEOLOGY & EXPLORATION, 1998, 26(5): 19-24.
    [10]Luo Zujiang, Yang Xilu. COALBED METHANE RESERVOIR NUMERICAL SIMULATION[J]. COAL GEOLOGY & EXPLORATION, 1997, 25(2): 28-30.

Catalog

    Article Metrics

    Article views (82) PDF downloads (6) Cited by()
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return