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Mechanical Model on Water Inrush Assessment Related to Deep Mining Above Multiple Aquifers

Mechanistisches Model für die Bewertung von Wassereinbrüchen bei tiefem Bergbau mit mehreren Aquiferen im Liegenden

Modelo mecánico para la evaluación de la irrupción de agua relacionada con la minería profunda sobre múltiples acuíferos

深部开采条件下多含水层突水评价力学模型

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Abstract

To deal with a water inrush issue that occurs in deep mines in China with more than one aquifer below the floor, the “down three zone” analysis method was modified to establish a conceptual model to evaluate the risk and mechanism of a water inrush. The model comprehensively considers the mechanical action, hydraulic connection, head loss of multiple aquifers, and an analysis of the complexity of water inrush in a multi-aquifer system to define water inrush conditions and criteria of different water inrush modes. There are four types of water inrush modes in a deep multi-aquifer system: single aquifer water inrush, multi-aquifer linkage water inrush, single aquifer lagging water inrush, and linked multi-aquifer lagging water inrush. Preventive and control measures for each of these are provided, based on: preventing linkage, eliminating hysteresis, preventing an inrush from a single aquifer, and preventing inrushes step by step.

Zusammenfassung

Um das Risiko und die Mechanismen von Wassereinbrüchen in tiefen chinesischen Bergwerken mit mehr als einem Aquifer im Liegenden zu bewerten, wurde der übliche „down three zone“-Ansatz durch die Entwicklung eines konzeptionellen Modells modifiziert. Das Modell berücksichtigt umfassend die mechanischen Vorgänge, die hydraulische Verbindung, die Druckverluste der Aquifere und eine Analyse der Komplexität des Wassereinbruchs in einem Multi-Aquifer-System, um die Bedingungen eines Wassereinbruchs und die Kriterien für unterschiedliche Wassereinbruchtypen zu bestimmen. In tiefen Multi-Aqufer-Systemen gibt es vier Wassereinbruchtypen: Einzel-Aquifer-Wassereinbrüche, verknüpfte Multi-Aquifer-Wassereinbrüche, verzögerte Einzel-Aquifer-Wassereinbrüche und verknüpfte verzögerte Multi-Aquifer-Wassereinbrüche. Für alle Typen werden präventive und Kontrollierende Maßnahmen vorgeschlagen. Sie basieren auf der Verhinderung von Verknüpfung, der Beseitigung von Hysterese, der Verhinderung des Wassereinbruchs aus einem einzelnen Aquifer und der Verhinderung eines Wassereinbruchs Schritt für Schritt.

Resumen

Para lidiar con un problema de irrupción de agua que ocurre en minas profundas en China con más de un acuífero debajo del piso, se modificó el método de análisis de “tres zonas abajo” para establecer un modelo conceptual para evaluar el riesgo y el mecanismo de irrupción de agua. El modelo considera de manera integral la acción mecánica, la conexión hidráulica, la pérdida de carga de múltiples acuíferos y un análisis de la complejidad de la irrupción de agua en un sistema de múltiples acuíferos para definir las condiciones y los criterios de los diferentes modos de irrupción de agua. Hay cuatro tipos de irrupción de agua en un sistema de múltiples acuíferos: desde un solo acuífero, desde varios acuíferos, retraso en la irrupción de agua desde un solo acuífero y retraso en la irrupción de agua desde varios acuíferos. Se proporcionan medidas preventivas y de control para cada uno de estos casos, basadas en la prevención del enlace, la eliminación de la histéresis, la prevención de la irrupción desde un solo acuífero y la prevención de irrupciones paso a paso.

抽象

为解决大采深矿井煤层底板下伏多含水层突水问题,对“下三带”进行了修正,建立概念模型,以评价突水风险。该模型综合考虑了多含水层的力学作用、水力联系和多含水层水头损失;分析了多含水层系统突水的复杂性,以确定不同突水模式的突水条件和标准。深部多含水层系统的突水模式有四种:单含水层突水、多含水层联合突水、单含水层滞后突水和多含水层滞后突水。基于防止联合突水、消除滞后突水、预防单含水层突水和预防逐步突水,提出了每种突水模式的预防和控制措施。

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Acknowledgements

The authors thank the anonymous reviewers for their constructive comments that helped to improve the quality of the paper. This study was supported by the National Natural Science Foundation of China (51604167), Postdoctoral Science Special Foundation of China (2015T80731), Postdoctoral Science Foundation Funding of China (2016M601171), and the Shandong Key Research and Development Project (2018GSF117018).

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Yin, L., Ma, K., Chen, J. et al. Mechanical Model on Water Inrush Assessment Related to Deep Mining Above Multiple Aquifers. Mine Water Environ 38, 827–836 (2019). https://doi.org/10.1007/s10230-019-00623-3

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  • DOI: https://doi.org/10.1007/s10230-019-00623-3

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