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Ground movement mechanism in tectonic stress metal mines with steep structure planes

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An Erratum to this article was published on 01 November 2017

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Abstract

When mining metal mines with steep structure planes by the caving method, there is a mechanical model in which the horizontal stress on the rock mass is simplified as a column before surface subsidence. The model is used to deduce critical support load and limiting column length for a given horizontal stress and support pressure. Considering the impact of the column effect, a method is proposed to determine the movement of the ground and caving area in a mine. After surface subsidence, the horizontal stress on a surrounding rock mass can be simplified to a cantilever beam mechanical model. Expressions for its bending fracture length are deduced, and a method is given to determine its stability. On this basis, an explanation for the large ground movement and subsidence scope was given. A case study shows that the damage effect of column and cantilever beam is significant for ground movement in metal-ore mine, and an appropriate correction value should be applied when designing for its angle of ground movements.

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  • 16 December 2017

    The original version of this article unfortunately contained a mistake. The corrected author list is given below:

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Authors and Affiliations

  1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan, 430071, China

    Kai-zong Xia  (夏开宗), Cong-xin Chen  (陈从新), Xiu-min Liu  (刘秀敏), Yuan Zheng  (郑元) & Hua Fu  (付华)

Authors
  1. Kai-zong Xia  (夏开宗)
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  2. Cong-xin Chen  (陈从新)
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  3. Xiu-min Liu  (刘秀敏)
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  4. Yuan Zheng  (郑元)
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  5. Hua Fu  (付华)
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Corresponding author

Correspondence to Kai-zong Xia  (夏开宗).

Additional information

Foundation item: Project(51274188) supported by the National Natural Science Foundation of China

An erratum to this article is available at https://doi.org/10.1007/s11771-017-3687-2.

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Xia, Kz., Chen, Cx., Liu, Xm. et al. Ground movement mechanism in tectonic stress metal mines with steep structure planes. J. Cent. South Univ. 24, 2092–2104 (2017). https://doi.org/10.1007/s11771-017-3618-2

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  • DOI: https://doi.org/10.1007/s11771-017-3618-2

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