Shanxi Coking Coal Shanxi Coal International Baozigou Coal Industry Co.

為研究不同干濕循環次數對破碎砂巖水化學特征的影響,以豹子溝礦10203工作面為例,開展頂板破碎砂巖水巖作用實驗。研究結果表明,隨著干濕循環次數的增大,礦井水陰、陽離子置換作用增強,Na++K+、HCO3-、CO32-呈正相關的趨勢,Ca2+反之,長石礦物溶蝕-沉淀效應增強,礦井水化學類型由SO4-Ca逐漸轉化為HCO3-Na類型。研究結果可為廢棄礦井建設抽水蓄能電站采空區水化學評估提供借鑒。

To study the effect of different wet dry cycles on the hydrochemical characteristics of fractured sandstone, a water rock interaction experiment was conducted on the 10203 working face of Baozigou Mine as an example. The research results indicate that as the number of wet and dry cycles increases, the displacement of anions and cations in mine water is enhanced. Na++K+, HCO3-, and CO32-show a positive correlation trend, while Ca2+is the opposite. The dissolution precipitation effect of feldspar minerals is enhanced, and the chemical type of mine water gradually transforms from SO4-Ca to HCO3-Na type. The research results can provide reference for the hydrochemical evaluation of goaf in abandoned mine construction of pumped storage power stations.