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Study on Relationship Between Filling Rate and Ground Settlement in Strip Mining

  • Ming Li
  • Zhao-jiang ZhangEmail author
  • Yu-lin Li
Conference paper
Part of the Communications in Computer and Information Science book series (CCIS, volume 980)

Abstract

The study of filling rate is of great significance to liberate the “three lower” coal pressure and improve the mine productivity in filling strip mining. Taking the 7/8/9 working face of Tao-yi Coal Mine as the research object in Handan, this paper studies the determination of the most suitable filling rate under the existing geological and mining conditions by means of numerical simulation and field measurement. The results show that,when the mining width is 1:1, the basic roof force and the basic roof subsidence decrease gradually with the increase of filling rate; the influence range of surface subsidence decreases gradually; after considering the cost and the effect of controlling surface subsidence, 90% was selected as the most suitable filling rate of the working face; the result of simulation is as the same as surface subsidence. Therefore, the surface subsidence of strip filling mining decreases with the increase of filling rate, and the filling rate of 90% should be selected as the reference value of strip filling mining under similar geological conditions.

Keywords

Filling mining Filling rate Numerical simulation Subsidence value Sustainable development 

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Copyright information

© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.College of Mining and GeomaticsHebei University of EngineeringHandanChina
  2. 2.Collaborative Innovation Center of the Comprehensive Development and Utilization of Coal ResourcesHandanChina

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