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Evaluation of Water Inrush Vulnerability from Aquifers Overlying Coal Seams in the Menkeqing Coal Mine, China

Bewertung der Gefährdung von Kohleflözen durch Wassereinbrüche aus darüber liegenden Grundwasserleitern im Kohlebergwerk Menkequing, China

Evaluación de la vulnerabilidad a la irrupción de agua desde acuíferos sobre vetas de carbón en la mina de carbón Menkeqing, China

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Abstract

The vulnerability of the C2-1 and C3-1 coal seams to water inrush from overlying aquifers was evaluated for a portion of the Menkeqing coal mine. Geological and hydrogeological data were used to develop a conceptual model. Using the ‘three maps-two predictions’ method, an index model of water abundance (yield) of the overlying aquifers was constructed and overlain on a map that indicates potential fractured zone connections to the overlying aquifers. Superposition of the two zoning maps allowed development of a comprehensive inrush vulnerability map. Mine discharges were predicted under both natural and mining conditions using Visual Modflow, and appropriate prevention and control measures are proposed.

Zusammenfassung

Die Gefährdung der Kohleföze C2-1 und C3-1 durch Wassereinbrüche aus darüber liegenden Grundwasserleitern wurde für einen Teil der Kohlebergwerkes Menkequing bewertet. Geologische und hydrologische Daten wurden genutzt, um ein konzeptionelles Modell zu entwickeln. Unter Verwendung der „three maps-two predictions“-Methode wurde ein Indexmodell des Wassergehaltes der über den Flözen liegenden Grundwasserleiter erstellt. Eine Karte der Ergebnisse des Modells wurde mit einer Karte der Verteilung möglicher, durch Klüftung gegebener Verbindungen der Grundwasserleiter mit den Flözen überlagert. Dadurch ergab sich eine umfassende Karte der Gefährdung durch Wassereinbrüche. Unter Nutzung von Visual Modflow wurden Flüsse unter natürlichen und unter bergbaulichen Bedingungen berechnet. Entsprechende Maßnahmen zur Verhinderung von Wassereinbrüchen und zur Kontrolle wurden vorgeschlagen.

Resumen

Se evaluó la vulnerabilidad de las vetas de carbón C2-1 y C3-a la irrupción de agua para una porción de la mina de carbón Menkeqing. Los datos geológicos y hidrogeológicos fueron usados para desarrollar un modelo conceptual. Usando el método de los ‘tres mapas-dos predicciones’, se construyó un modelo de abundancia de agua de los acuíferos ubicados sobre la mina y un mapa que indica las potenciales conexiones de dichos acuíferos con las zonas de fractura. La superposición de ambos mapas permitió el desarrollo de un mapa sobre la vulnerabilidad a la irrupción de agua. Se predijeron las descargas de la mina bajo condiciones naturales y bajo las condiciones impuestas por la minería usando Visual Modflow; se proponen medidas de control y una apropiada prevención.

摘要

文章评价了门克庆煤矿C2-1与C3-1煤层上覆含水层的突水脆弱性。基于地质和水文地质资料建立了概念模型,用“三图-双预测”方法,建立了上覆含水层富水性指数模型,并将其叠加至导水裂隙带发育图上。两个分区图叠加生成综合突水脆弱性评价图。应用Wisual Modflow预测自然与采矿条件下矿井涌水量,提出合理的水害防治与控制措施。

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Correspondence to Yuanzhang Liu.

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Wu, Q., Liu, Y., Zhou, W. et al. Evaluation of Water Inrush Vulnerability from Aquifers Overlying Coal Seams in the Menkeqing Coal Mine, China. Mine Water Environ 34, 258–269 (2015). https://doi.org/10.1007/s10230-014-0313-5

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  • DOI: https://doi.org/10.1007/s10230-014-0313-5

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