本文選題：花崗巖 + 水化學(xué)侵蝕�。� 參考：《礦業(yè)研究與開發(fā)》2016年07期

【摘要】：以三山島金礦深部賦存的花崗巖為研究對象,通過不同pH值的酸性NaCl溶液與蒸餾水作用后花崗巖的單軸壓縮試驗(yàn),探討了水化學(xué)侵蝕效應(yīng)對花崗巖的變形和破壞特性的影響。試驗(yàn)結(jié)果表明:水化學(xué)溶液侵蝕后,花崗巖試樣峰值強(qiáng)度降低,變形有脆性向延性轉(zhuǎn)變的趨勢;由于水化學(xué)溶液對巖石的軟化影響,花崗巖試樣的彈性模量降低,泊松比相應(yīng)有所增加;在酸性溶液與花崗巖的物理化學(xué)作用中,溶液pH值越小、流速越大,花崗巖各項(xiàng)力學(xué)參數(shù)指標(biāo)的劣化越大。
[Abstract]:Based on the uniaxial compression test of granite with different pH values of acidic NaCl solution and distilled water, the effects of hydrochemical erosion on the deformation and failure characteristics of granite were studied. The experimental results show that the peak strength of granite samples decreases and the deformation tends to be brittle to ductility after erosion by hydrochemical solution, and the elastic modulus of granite samples decreases due to the effect of hydrochemical solution on the softening of rock. The Poisson's ratio increases correspondingly, and in the physicochemical interaction between acid solution and granite, the smaller the pH value of the solution, the greater the velocity of flow, and the greater the deterioration of the mechanical parameters of the granite.
【作者單位】： 北京科技大學(xué)土木與環(huán)境工程學(xué)院;北京科技大學(xué)金屬礦山高效開采與安全教育部重點(diǎn)實(shí)驗(yàn)室;青島市勘察測繪研究院;
【基金】：中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(FRF-TP-15-037A2) 國家自然科學(xué)基金項(xiàng)目(51574014)
【分類號】：TD313.1
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本文編號：2004697