本文選題：泥巖 + 電極材質(zhì)　； 參考：《煤炭學(xué)報(bào)》2017年S1期

【摘要】：為闡明電化學(xué)作用下電極材質(zhì)對(duì)泥巖物性變化的影響規(guī)律,以新生代煤系泥巖為對(duì)象,運(yùn)用物理模擬方法,研究低壓直流電場(chǎng)作用下電極為銅、鐵和鋁時(shí)的電極腐蝕特征與新生礦物表征,電流變化與電流降低率,模型不同區(qū)域巖樣電阻率和強(qiáng)度特征,并探討了電阻率與強(qiáng)度的內(nèi)在聯(lián)系。結(jié)果表明:不同材質(zhì)電極陽(yáng)極均在酸性環(huán)境下發(fā)生金屬氧化反應(yīng),電極被腐蝕生成新礦物,鋁電極陰極在堿性環(huán)境下生成大量三水鋁石,鐵、銅電極陰極則沒(méi)有明顯變化;通電初期不同材質(zhì)電極模型電流均有一個(gè)陡降過(guò)程,然后緩降,降低模式和降低率存在明顯差異;3種電極模型不同區(qū)域巖樣的電阻率和單軸抗壓強(qiáng)度均呈現(xiàn)陽(yáng)極中間陰性的趨勢(shì),且電阻率和單軸抗壓強(qiáng)度正相關(guān)。
[Abstract]:In order to elucidate the influence of electrode material on the physical properties of mudstone under electrochemical action, the copper electrode under the action of low voltage DC electric field was studied with the Cenozoic coal series mudstone as an object, and physical simulation method was used to study the effect of electrode material on the physical properties of mudstone. The characteristics of electrode corrosion and new minerals, the current variation and current reduction rate, the resistivity and strength characteristics of rock samples in different regions of the model are discussed, and the intrinsic relationship between resistivity and strength is also discussed. The results show that the anode of different materials is oxidized in acidic environment, the electrode is corroded to form new minerals, the cathode of aluminum electrode produces a large amount of bauxite in alkaline environment, but the cathode of iron and copper electrode has no obvious change. In the initial stage of power supply, the current of the electrode model with different materials has a steep drop process, and then it drops slowly. The resistivity and uniaxial compressive strength of rock samples in different regions of the three electrode models show a negative trend, and the resistivity is positively correlated with uniaxial compressive strength.
【作者單位】： 太原理工大學(xué)采礦工藝研究所;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51674173) 山西省回國(guó)留學(xué)人員科研資助項(xiàng)目(2016-040) 山西省自然基金面上基金資助項(xiàng)目(201601D102038)
【分類(lèi)號(hào)】：TD311

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本文編號(hào)：1908899