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黑色页岩的化学风化过程中所含硫化矿物氧化后形成的酸性环境水,可促使所含造岩矿物的溶蚀以及不良矾类风化产物的生成.以广西省清溪组黑色页岩为研究对象,运用水文地球化学模拟软件PHREEQC对该过程进行平衡模拟,计算研究区黑色页岩各矿物的饱和指数,结合敏感性分析等手段研究了造岩矿物和矾类风化产物在不同酸性水条件下的溶解析出性质.对黑色页岩在酸性水中溶蚀效应的数值解析,为进一步深入研究黑色页岩化学风化规律提供了理论依据.
The acidic environment water formed by oxidation of sulphide minerals contained in the chemical weathering of black shale can promote the dissolution of rock-forming minerals and the formation of bad alum-type weathering products.With the black shale of Qingxi Formation in Guangxi Province as the research object , The hydrogeochemical simulation software PHREEQC was used to balance the process and calculate the saturation index of each mineral of the black shale in the study area. Combining the sensitivity analysis and other means, the weathering products of rock-forming minerals and alum were studied under different acidic water conditions Dissolution and precipitation.The numerical analysis of the dissolution effect of black shale in acidic water provides the theoretical basis for further study on the chemical weathering of black shale.