Risk assessment of water inrush of No.11 coal seam floor in Hancheng mining area on the basis of vulnerability index method

DAI Gelian; XUE Xiaoyuan; XU Ke; NIU Chao; YANG Tao

doi:10.3969/j.issn.1001-1986.2017.04.020

Volume 45 Issue 4

Aug. 2017

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COAL GEOLOGY & EXPLORATION > 2017 > 45(4): 112-117,125. > DOI: 10.3969/j.issn.1001-1986.2017.04.020

DAI Gelian, XUE Xiaoyuan, XU Ke, NIU Chao, YANG Tao. Risk assessment of water inrush of No.11 coal seam floor in Hancheng mining area on the basis of vulnerability index method[J]. COAL GEOLOGY & EXPLORATION, 2017, 45(4): 112-117,125. DOI: 10.3969/j.issn.1001-1986.2017.04.020

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Risk assessment of water inrush of No.11 coal seam floor in Hancheng mining area on the basis of vulnerability index method

1. College of Geology and Environment, Xi'an University of Science and Technology, Xi'an 710054, China;
2. Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources, Xi'an 710054, China

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National Natural Science Foundation of China(41472234)

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Received Date: January 14, 2017
Published Date: August 24, 2017

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Abstract

Based on the comprehensive analysis of the geological and hydrogeological conditions of the study area (Hancheng mining area), this paper puts forward the index system of water inrush from Ordovician limestone aquifer in the coal seam floor by using the relevant factor analysis method. Taking several typical coal mines as examples, the factors influencing water inrush from the No.11 coal seam floor the most threatened by the Ordovician limestone aquifer, are analyzed emphatically. Four evaluation indexes, which are the effective thickness of the confining bed, the scale of fold, the water content of the aquifer, and the scale of the fault, are constructed. The water inrush risk zoning map of the No.11 coal seam floor is obtained based on the vulnerability index method.
- water hazard in seam floor,
- Ordovician water inrush,
- index system,
- risk assessment

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Risk assessment of water inrush of No.11 coal seam floor in Hancheng mining area on the basis of vulnerability index method

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