The Seepage Risk Analysis of Surface Runoff Caused by the Shallow Thick Coal Seam Mining

Abstract:

As for shallow thick coal seam, the overlying strata can not form steady structure and will break down until reach the surface ground, which will induced large ground deformation and fractures in the overlying strata during the mining. Under the condition of strong rainfall, surface runoff will influx to the collapse pit or supply to other aquifers, and inrush into the roadway through water flowing fractured zone. This paper takes the 4201、4301、4302、4303 and 4401 coal faces of JingDong mine area in PingShuo for example, predicts the range of ground subsidence、settlement and the height of water flowing fractured zone dynamically after coal face mining, with the Flac3D numerical modeling software. On the base of result above and combined with geomorphic characteristics and hydrologic geology of the mine area, the author analyses risk of surface runoff seepage and put forward a dynamic water drainage design to prevent mine water bursting, which offers scientific foundation and data for safety production of the mine .

• Periodical: Applied Mechanics and Materials (Volumes 170-173)
• Pages: 1353-1358
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.170-173.1353
• Online since: May 2012
• Authors: Shun Feng Zhang, Rui Lin Hu, Xiong Wu
• Keywords: Drainage Design, Shallow Thick Coal Seam, Surface Runoff Seepage, Water Flowing Fractured Zone

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