Effects of Coal Mining Subsidence on Wind Erosion Characteristics in Aeolian Desert Region of Shenfu Coal Mining
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    Abstract:

    [Objective] The influences of Shenfu coal mining subsidence on the movement of aeolian sand were studies to provide scientific basis and guidance for the controlling of wind erosion and recovery of vegetation. [Methods] Based on local field observation in a typical sand dune, this paper studied the impacts of sand dune position and the surface damage ratio on the thickness of aeolian deposit. [Results] The results showed that the thinkness of aeolian deposits on the ground that had undergone one year of subsidence and two year of subsidence were -28.2 cm and -45.6 cm, respectively; while the reference sand dune was -2.8 cm. The overall probabilities of wind erosion of the above three dunes were >60%, >90%, and<10%, respectively. Surface accumulation occurred more intensely on the surface with a higher damage ratio. The movement of wind-blown sand gradually shifted from accumulation or filling to wind erosion as the surface damage ratio decreased. The relation between the thickness of aeolian deposit(Q) and the surface damage ratio(V) can be described by a polynomial function. [Conclusion] It was concluded that the coal mining-induced subsidence significantly promoted the movement of aeolian sand and changed the thickness of aeolian deposit locally, and it may reactivate fixed or semi-fixed dunes.

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赵国平,毕银丽,李军保,高荣,郜超.神府煤田风沙区采煤塌陷对风蚀的影响[J].水土保持通报英文版,2016,36(4):129-132

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History
  • Received:December 02,2015
  • Revised:January 05,2016
  • Adopted:
  • Online: September 21,2016
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