深井阳极地床干扰范围影响因素分析

Analysis on Factors Affecting Deep Well Anode Ground Bed Interference Range

为减少深井阳极地床对周围地下钢结构的干扰影响,有必要弄清影响深井阳极地床对附近设施干扰的各个因素,以及各因素的影响程度。采用图表方式分别对土壤电阻率、地床深度、地床长度以及施加到阳极地床的电流四种因素进行分析。结果表明,深井阳极地床受土壤电阻率和施加到阳极地床的电流的影响较大。所以,为减少深井阳极地床对周围设施的干扰,应尽可能减小施加到阳极地床的电流;在无法减小电流的情况下,应将深井阳极地床设置在土壤电阻率低的位置。

In order to reduce effect of deep well anode ground bed on the surrounding underground steel structures,it is necessary to make clear interference degree of deep well anode ground bed on such structures.With the method of the chart,analyzed are soil resistivity and depth,bed length and electric current applied in the anode ground bed.Generally speaking,deep well anode ground bed may be largely affected by electric current and soil resistivity applied in the anode ground bed.So,in order to reduce the interference of deep well anode ground bed,cathodic protection current shall be reduced as far as possible.If cathodic protection current can not be reduced,deep well anode ground bed shall be installed in the position with low soil resistivity.