NDLI: The Effects of Caving of a Coal Mine’s Immediate Roof on Floor Strata Failure and Water Inrush

Content Provider	Springer Nature Link
Author	Xu, Dongjing Peng, Suping Xiang, Shiyao Liang, Mingxing Liu, Wenming
Copyright Year	2015
Abstract	Large scale roof strata caving that occurs during coal extraction can irreversibly damage floor strata and result in riskier mining operations. Four research models incorporating floor water pressure were assessed for floor strata failure, using eight methods and two classification systems. A connection between floor strata failure and the coefficient of impact risk was developed. The derived equations represent a potentially effective method for providing a preliminary assessment of the risks associated with floor strata failure due to caving. A classification system of floor failure potential can be constructed to minimize risks during mining.Das Herabbrechen des Hangenden während des Kohleabbaus kann zu einer irreversiblen Zerstörung des Liegenden und zu einer Gefährdung des Bergbaubetriebes führen. Vier Modelle, die den Liegendwasserdruck berücksichtigen, wurden entwickelt, um den Bruch des Liegenden zu unter-suchen. Dabei wurden acht Methoden und zwei Klassifikationssysteme verwendet. Zwischen dem Bruch des Liegenden und dem Risikokoeffizienten wurde eine Beziehung aufgestellt. Die abgeleiteten Gleichungen stellen eine effektive Methode dar, um eine Vorabschätzung des Liegendbruches auf Grund des Abbaus zu erstellen. Für das Risikos eines Liegendbruchs wurde ein Klassifikationssystem erstellt, um die Gefahr während des Abbaus zu minimieren.El cavado a gran escala que ocurre durante la extracción de carbón puede dañar irreversiblemente la estructura del piso y resultar en un mayor riesgo en las operaciones mineras. Para relevar la falla estructural del piso se utilizaron cuatro modelos que incorporan la presión de agua del piso, con 8 métodos y 2 sistemas de clasificación. Se desarrolló una conexión entre la falla de la estructura del piso y el coeficiente de impacto de riesgo. Las ecuaciones derivadas representan un metodo potencialmente efectivo para ofrecer un relevamiento preliminar de los riesgos asociados con la falla de la estructura del piso debido al cavado. Es posible construir un sistema de clasificiación de potenciales fallas del piso para minimizar los riesgos durante la operación minera.煤炭回采期间大范围顶板冒落能够诱发底板不可逆转破坏并加重回采危险。基于八类方法和两种分类评价了4个包含底板含水层水压的底板破坏模型。建立了底板破坏和风险系数的关系,推导出顶板冒落引起底板破坏的风险评估方程。一种底板破坏分类体系可用以降低回采风险。
Starting Page	337
Ending Page	349
Page Count	13
File Format	PDF
ISSN	10259112
Journal	Mine Water and the Environment
Volume Number	35
Issue Number	3
e-ISSN	16161068
Language	Chinese
Publisher	Springer Berlin Heidelberg
Publisher Date	2015-10-14
Publisher Institution	International Mine Water Association (IMWA)
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Impact loading Coefficient of impact resistance Floor water inrush Plate-beam theory Geology Water Quality/Water Pollution Hydrogeology Mineral Resources Ecotoxicology Industrial Pollution Prevention
Content Type	Text
Resource Type	Article
Subject	Water Science and Technology Geotechnical Engineering and Engineering Geology

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