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New Frontiers in Engineering Geology and the EnvironmentExperimental Investigation for Water Flowing Fractured Zone Due to Coal Mining Under Sea Area

New Frontiers in Engineering Geology and the Environment: Experimental Investigation for Water... [This paper presents an experimental investigation of development of water flowing fractured zone due to coal mining under sea area by scaled model test. Two models are designed to simulate coal mining along the strike and the dip. In model 1, the thickness of the overburden varies from 74 to 124 m and coal seam dips at an angle of 8°, and model 2 with a overburden thickness of 90 m and a dip angle of 0°. The results indicate that the height of overburden caving and water flowing fractured zones both increase at first then decrease to a comparatively stable values with the mining distance increasing; the height of overburden water flowing fractured zone increases significantly with the thickness of the overburden increasing and the height of overburden caving zone does not. When the coal mining thickness is 6 m, the maximum height of overburden water flowing fractured zones is 64.16 m (in model 1) and 48.20 m (in model 2), the maximum height of overburden caving zones is 12.76 m (model 1) and 12.00 m (model 2), respectively. The research results provide a helpful basis for upper mining limit decision-making and risk assessment.] http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png

New Frontiers in Engineering Geology and the EnvironmentExperimental Investigation for Water Flowing Fractured Zone Due to Coal Mining Under Sea Area

Part of the Springer Geology Book Series
Editors: Huang, Yu; Wu, Faquan; Shi, Zhenming; Ye, Bin
Wang, W. X.; Hu, W.; Liang, Y. K.
New Frontiers in Engineering Geology and the Environment — Jun 11, 2012
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References (5)

Publisher
Springer Berlin Heidelberg
Copyright
© Springer-Verlag Berlin Heidelberg 2013
ISBN
978-3-642-31670-8
Pages
207 –209
DOI
10.1007/978-3-642-31671-5_37
Publisher site
See Chapter on Publisher Site

Abstract

[This paper presents an experimental investigation of development of water flowing fractured zone due to coal mining under sea area by scaled model test. Two models are designed to simulate coal mining along the strike and the dip. In model 1, the thickness of the overburden varies from 74 to 124 m and coal seam dips at an angle of 8°, and model 2 with a overburden thickness of 90 m and a dip angle of 0°. The results indicate that the height of overburden caving and water flowing fractured zones both increase at first then decrease to a comparatively stable values with the mining distance increasing; the height of overburden water flowing fractured zone increases significantly with the thickness of the overburden increasing and the height of overburden caving zone does not. When the coal mining thickness is 6 m, the maximum height of overburden water flowing fractured zones is 64.16 m (in model 1) and 48.20 m (in model 2), the maximum height of overburden caving zones is 12.76 m (model 1) and 12.00 m (model 2), respectively. The research results provide a helpful basis for upper mining limit decision-making and risk assessment.]

Published: Jun 11, 2012

Keywords: Water flowing fractured zone; Experimental investigation; Mining under sea; Upper mining limit

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