文章摘要
基于数值模拟的地下空洞高密度电法分析
Analysis on the high-density resistivity method of underground cavity by numerical simulation
  
DOI:
中文关键词: 高密度电阻率法  地下空洞  视电阻率断面图  数值模拟
英文关键词: high density resistivity method  underground cavity  apparent resistivity cross section  numerical simulation
基金项目:江西省高校科技落地计划项目(KJLD13036)
作者单位
郑明新,张永伟,陈养强,刘林,黄文君 华东交通大学 道桥与岩土工程研究所江西 南昌 330013 
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中文摘要:
      采用高密度电法探测地下空洞时,由于受到地下空洞类型、地下电流分布等干扰因素的影响,常常会导致探测结果有所偏差.利用ANSYS对典型地下空洞地电模型进行了数值模拟,结果表明探测精度不仅与空洞埋深、电阻率值高低及相邻洞体间距有关,还与所采用的探测装置类型、电极间距等因素有关;还通过对实际煤矿采空区开展高密度电法的数值模拟,计算结果与现场实测结果基本一致,也证明将数值模拟技术与现场实测结果相结合,对于补充解释和准确判断地下空洞的分布具有较好的参考价值.
英文摘要:
      When detecting the underground cavity by the high density resistivity method, a deviation detection results were made due to the interference factor of the type of underground cavity and current distribution. Typical models of underground cavity were simulated and analyzed by means of numerical simulation method of ANSYS. The results show that the accuracy of the detection results not only involve with the depth, the level of resistivity values and the distance of the adjacent hole, but also has something to do with the type of detecting devices and the electrode spacing etc. Through the numerical simulation of high density resistivity method in the actual coal mining area, the calculation results and the field test results are basically consistent. And it also proves that combining the numerical simulation results and the field test results have good reference value for supplementary explaining and accurately determining the distribution of underground cavity.
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