地震学报
地震學報
지진학보
ACTA SEISMOLOGICA SINICA
2010年
1期
33-40
,共8页
深埋电极%装置系数%电位%视电阻率
深埋電極%裝置繫數%電位%視電阻率
심매전겁%장치계수%전위%시전조솔
buried electrodes%coefficient of electrode arrangement%electrical potential%apparent resistivity
首先研究了四极观测系统装置系数与电极埋深的关系; 然后给出了点电流源在3层地壳模型的地表和第二层时,电源所在层的电位的解析表达式; 最后将天津宝坻地区的电性结构简化成一个3层模型,计算给出了当地表层和基岩中的电阻率出现变化时,在地表和基岩上层开展四极地电阻率观测结果与供电极距和深度的关系.
首先研究瞭四極觀測繫統裝置繫數與電極埋深的關繫; 然後給齣瞭點電流源在3層地殼模型的地錶和第二層時,電源所在層的電位的解析錶達式; 最後將天津寶坻地區的電性結構簡化成一箇3層模型,計算給齣瞭噹地錶層和基巖中的電阻率齣現變化時,在地錶和基巖上層開展四極地電阻率觀測結果與供電極距和深度的關繫.
수선연구료사겁관측계통장치계수여전겁매심적관계; 연후급출료점전류원재3층지각모형적지표화제이층시,전원소재층적전위적해석표체식; 최후장천진보지지구적전성결구간화성일개3층모형,계산급출료당지표층화기암중적전조솔출현변화시,재지표화기암상층개전사겁지전조솔관측결과여공전겁거화심도적관계.
At first, the relation between the coefficient of electrode arrangement and the depth of buried electrodes for a four-electrode resistivity monitoring system is given in this paper. Then, the electrical potentials of the layers, in which the source electrode is buried in a three-layer earth model, are presented. Based on the resistivity profile at Baodi station in Tianjin, we have calculated the variation of apparent resistivity with different intervals between two source electrodes and depths of buried electrodes, when the resistivity of the surface layer or the rock layer has changed.
