新集二礦2401工作面灰?guī)r含水層水文地球化學(xué)特征研究

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關(guān)鍵詞：淮南煤田；灰?guī)r含水層；水文地球化學(xué)特征

中圖分類(lèi)號(hào)：P641 文獻(xiàn)標(biāo)志碼：A 文章編號(hào)：1003-5168（2025）13-0121-06

DOI：10.19968/j.cnki.hnkj.1003-5168.2025.13.024

Hydrogeochemical Characteristics ofLimestone Aquifer in 2401 Panel of Xinji No. 2 Mine

ZHOU PengjuLI Jibao （China Coal Xinji Energy Co.，Ltd.，Xinji No.2 mine，Huainan 232002，China）

Abstract： [Purposes] In view of the complex hydrogeological conditions of Huainan coalfield，this study systematicallyanalyzes the hydrogeochemical characteristics of groundwater incoal mines to identify the main water sources that pose a threat to coal mining.[Methods] Taking Xinji No.2 mine and 24Ol panel of Huainan City as a case study，Piper three-line analysis and major ion analysis methods were employed to systematically investigate the variation trend of hydrochemical types and ionic concentration gradients with depth acrosslimestone aquifers in the mining area.[Findings] According to the results of hydrochemical analysis，the water quality of Taiyuan Formation limestone is mainly HCO 3 ·Cl-Na type， the Ordovician limestone is Cl-Na type，while the Cambrian limestone is Cl ?? HCO NA type，and the wa3 ter quality of panel 24O1 is classified as SO 4 ·HCO 3 -Na type.With the increase of mining depth，the concentrations of Ca2+ ， Mg2+ ，Na++K+and Cl- decreases，while concentration of SO progressively rises. The concentration of HCO3- remains relatively stable with the increase of mining depth.[Conclusions] The Taiyuan Formation limestone aquifer is a direct water-filling aquifer，while the Ordovician limestone is an indirect water-filling aquifer.Inaddition，the variation patterns of ion concentrations with depth is revealed， which provides a scientific basis for formulating targeted measures to prevent and control mine waterhazards，and thus helping to reduce the risk of water inrush accidents. Keywords：Huainan coal field; limestone aquifer; hydrogeochemical characteristics

0 引言

隨著淺部煤炭資源開(kāi)采的逐步完成，兩淮礦區(qū)的礦井作業(yè)重心逐步深人到更為復(fù)雜且深層的區(qū)域。（剩余6209字）