摘要
合理准确的土壤电阻率分层模型对直流接地极极址选取至关重要.为了得到较为精确的土壤电阻率模型,工程上一般采取注流试验的方法来验证所测土壤电阻率模型的准确性.然而,在注流试验过程当中,注流试验参数的选取不当会对极址电位分布产生较大的影响.为此,本文从注流试验过程当中参数选取出发,根据湖南易安冲极址实测数据及软件仿真来进行研究,比较分析测量电极的入地深度、注流极的埋深与半径、最大电位点、测量极与回流极距离等参数的选择对地表电位分布的影响,最后发现测量极与回流极之间的间距对电位测量数值的影响较大,据此研究结论,来提高注流试验结果的精度.
Reasonably accurate soil resistivity hierarchical model of DC grounding electrode site choice is es- sential. In order to obtain more accurate soil resistivity model engineering in general, injection flow test meth- od is adopted to verify the soil resistivity model measured accuracy. However, during the injection flow test process, iniection flow test parameters selection, can affect extremely addressing potential distribution. This paper from the injection flow test process parameters choice departure, according to Hunan Yi＇anchong pole address measured data and software simulations to study comparative analytical measurement into the depth of the electrode, the injection flow electrode depth and radius, the influence of choice of maximum potential point, measuring pole and the return pole distance parameters on surface potential distribution are analyzed. Finally, it is found that the distance between the measurement pitch electrode and the return electrode has a greater impact on potential measurement value, whereby research findings to improve the accuracy of injection flow test results.
出处
《三峡大学学报（自然科学版）》
CAS
2017年第1期79-83,共5页
Journal of China Three Gorges University：Natural Sciences
基金
国家自然科学基金(51507092)
关键词
土壤电阻率
注流试验
地表电位分布
试验参数
soil resistivity
injection flow test
surface potential distribution
test parameters
