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为阐明电化学作用下黏土类煤系泥岩体的物性变化规律,以新生代煤系泥岩的重塑样为研究对象,研究外加直流电场作用下黏土类煤系泥岩体的电流变化与电流降低率,不同区域的电阻率及单轴抗压强度变化,并研究了不同电极材料对这种变化的影响规律。结果表明:在外加直流电场作用下,重塑样的电流均呈现先陡降,然后缓降,最终趋于稳定的过程,但电极材料不同,其电流降低趋势和降低率存在明显差异;3种电极材料不同的重塑样的电阻率与单轴抗压强度均呈现从阴极到阳极递增的趋势,且电极材料为铜时,这一趋势最为明显,其次为铁电极,铝电极的影响最弱。
In order to clarify the changing law of physical properties of clay-like mudstone under electrochemical action, taking the remodeling sample of the Cenozoic coal-measure mudstone as the research object, the current change and current reduction rate of clay-like mudstone under the action of DC electric field were studied. , Resistivity and uniaxial compressive strength of different regions, and studied the influence of different electrode materials on this change. The results show that under the applied DC electric field, the current of the remodeled sample firstly descends and then descends slowly and finally tends to be stable. However, the current decrease trend and the reduction rate of the remodeled samples are obviously different. The resistivity and uniaxial compressive strength of the remodeled samples with different electrode materials showed a trend of increasing from cathode to anode, and the trend was most obvious when the electrode material was copper, followed by the iron electrode and the aluminum electrode had the weakest effect .