Abstract
To ensure safe mining of the no. 2 coal seam in the Pingdingshan No. 10 coal mine, three methods (analogue, big well, and numerical simulation) were used to forecast mine water inflow and their performance. The big well method predicted the largest water inflow: 233.8 m3/h in the −230 m level and 281.1 m3/h in the −300 m level. The numerical simulation predicted the least inflow, 205.7 and 228.6 m3/h respectively for the 230 and −300 m levels; this was closest to the measured values. Based on this work, it appears that combining numerical simulations with other methods are a good way to accurately forecast mine water inflow.
Zusammenfassung
Um den sicheren Abbau des Flözes Nr. 2 im Kohlebergwerk Pingdingshan Nr. 10 zu ermöglichen, wurden drei Methoden (Analogieschluss, Big-Well-Methode und numerische Simulation) für die Vorhersage des Zustroms an Grubenwasser benutzt und hinsichtlich ihrer Leistung verglichen. Die Big-Well-Methode sagte die größten Zuflussmengen vorher: 233.8 m3/h auf dem −230 m Niveau und 281.1 m3/h auf dem −300 m Niveau. Die numerische Simulation prognostizierte die geringsten Zuflussmengen, 205.7 m3/h auf dem −230 m Niveau und 228.6 m3/h auf dem −300 m Niveau. Diese Werte kamen den gemessenen am nächsten. Basierend auf den durchgeführten Arbeiten erscheint das Kombinieren numerischer Simulationen mit anderen Methoden eine gute Möglichkeit, den Grubenwasserzustrom zutreffend vorherzusagen.
Resumen
Para volver segura la minería en la veta de carbón no. 2 en la mina de carbón Pingdingshan, tres métodos (análogo, big well y simulación numérica) fueron usados para predecir la afluencia de agua de mina y sus comportamientos. El método big well predijo la mayor afluencia de agua: 233.8 m3/h en el nivel −230 m y 281.1 m3/h en el nivel −300 m. La simulación numérica predijo la menor afluencia, 205.7 m3/h y 228.6 m3/h respectivamente para los niveles de −230 y −300 m; esto último es muy cercano a los valores medidos. Este trabajo indica que las simulaciones numéricas combinadas con otros métodos son un buen camino pra predecir en forma precisa las afluencias de agua de mina.
多种方法预测平顶山十矿涌水量(中国)
为保证平顶山十矿2号煤层安全开采,使用三种方法(类比法、大井法和数值模拟)预测矿井涌水量。大井法预测 −230 m水平和 −300 m水平最大涌水量分别为 233.8 m3/h 与 281.1 m3/h。数值模拟预测最小涌水量与实测涌水量接近,−230 m 水平与 −300 m 水平预测涌水量分别为 205.7 m3/h 与 228.6 m3/h。数值模拟与其他方法相结合能够更可靠地预测矿井涌水量。
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Acknowledgments
This study was financially supported by the Fundamental Research Funds for the Central Universities (2009QD03), which we gratefully acknowledge.
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Zhang, K., Cao, B., Lin, G. et al. Using Multiple Methods to Predict Mine Water Inflow in the Pingdingshan No. 10 Coal Mine, China. Mine Water Environ 36, 154–160 (2017). https://doi.org/10.1007/s10230-015-0381-1
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DOI: https://doi.org/10.1007/s10230-015-0381-1