PERFILAGEM ELÉTRICA DE DESAGUAMENTO DE AREIA INDUZIDO POR VIBRAÇÃO
DOI:
https://doi.org/10.15628/holos.2020.8952Palavras-chave:
desaguamento, eletrorresistividade, arranjo Wenner alfa, análise de sensibilidade, dewatering, electroresistivity, moisture, Wenner alpha array, sensitivity analysis.Resumo
Resumo: A perfilagem eletrorresistiva da umidade no leito de areia quartzosa sobre tela vibratória em escala piloto foi tratado aqui. No que tange à configuração do eletrodos para medição de eletrorresistividade, o arranjo Wenner alfa clássico foi usado, exigindo espaçamento igual entre os eletrodos e mesma profundidade de penetração e alinhamento corretos. Aqui, a influência de pequenas variações na profundidade de penetração e falta de colinearidade dos eletrodos nas leituras de umidade, usando um eletrorresistivímetro digital e eletrodos de cobre, foi avaliada. As profundidades de penetração estudadas foram de 50 mm e 55 mm. Por sua vez, o desalinhamento testado dos eletrodos foi de 10 mm. O único fator que causou efeito estatisticamente significativo nas medições foi a profundidade de penetração de eletrodo, ao menos na faixa aqui estudada.
Title: ELECTRICAL PROFILING OF VIBRATION-INDUCED DEWATERING OF SAND
Abstract: Electrorresistive profiling of moisture inside a quartz sand bed on a pilot-scale vibrating screen was treated here. As electrode or probe configuration for resistivity measurement is concerned, the classical Wenner ? array was used, requiring equal electrode spacing, and correct penetration depth and alignment. Here, the influence of small variations in penetration depth and lack of probe collinearity on the moisture readings, using a digital earth resistance tester and copper wires as probes, was evaluated. The penetration depths studied were 50 mm and 55 mm. In turn, the electrode misalignment tested was 10 mm. The only factor that has caused a statistically significant effect in measurements was probe penetration depth, at least under the range tested here.
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