›› 2010, Vol. 31 ›› Issue (5): 1517-1521.

• Geotechnical Engineering • Previous Articles     Next Articles

Effect of iron ore mining on safety of Boziliang auxiliary dam

WU Xiong1, ZHANG Shun-feng1, TIAN Hong2, DUAN Qing-wei3, LIU Chang-jun3, HE Bing-shun3, SUN Dong-ya3   

  1. 1. Beijing Key Laboratory of Water Resources and Environment Engineering, China University of Geosciences, Beijing 100083, China; 2. School of Engineering and Technology, China University of Geosciences, Beijing100083, China; 3. China Institute of Water Resources and Hydropower Research, Beijing 100044, China
  • Received:2008-10-17 Online:2010-05-10 Published:2010-05-24

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Abstract:

Madaozi Iron Ore Mine lies on the east of Boziliang auxiliary dam of Panjiakou Reservoir. The distance between the mine and the auxiliary dam is only about 160 m. So it is a very important question for discussion whether mining will affect the safety of the auxiliary dam. A large-scale mapping in the study area was done by 3D laser scanner; and a 3D geological model was established. The strength of rocks was tested with a schmidt hammer and a dot-loading apparatus; and statistics of joints and fractures were carried out under the well. Based on these, rock mass classification was made with RMR-system; and the strength parameters of surrounding rock were determined. The regular pattern of the surface movement causing by iron ore mining was forecast with the FLAC-3D software. Finally, the seepage field of Boziliang auxiliary dam was simulated and analyzed using the Visual Modflow software. The study result indicates it will not affect the safety of Boziliang auxiliary dam as long as the exploitation in Madaozi Iron Ore Mine conforms to design.

Key words: iron ore mining, numerical calculation, safe running, surface movement, seepage field

CLC Number: 

  • TD 804
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