Dissertation > Excellent graduate degree dissertation topics show

Study on the Optimization of Deep Stope Support Parameters and Mining Sequence of Xingcheng Gold Mine

Author: XuKaiMin
Tutor: FuHouLi
School: Shandong University of Science and Technology
Course: Geotechnical Engineering
Keywords: deep stope mortar anchor support numerical simulation parameter optimization mining sequence
CLC: TD35
Type: Master's thesis
Year: 2011
Downloads: 87
Quote: 0
Read: Download Dissertation

Abstract


With the increasing demand for mineral resources and the development of mechanized mining technology, mining intensity in Xincheng Gold Deposit is gaining, the scale becomes much larger and the mineral deposit in shallow has been removed in succession while mining is gradually transfering to the deep. Compared with mining in shallow, geo-stress becomes higher and geological conditions are more complex because geo-stress characteristics and rock mechanical properties have been fundamental changed in deep, which easily leading to stope roof falling and slabbing. All that has brought great difficulties to stope maintaining and seriously affects the safe and efficient production.An effective measure to reduce the roof falling, rib spalling and other safety incidents is to introduce a scientific and reasonable support pattern. However, supporting parameters used in Xincheng Gold Deposit are determined by engineering experience, lacking of interrelated theoretical foundation. Combining the comprehensive understanding of the geological and mining technical conditions of the Xincheng Gold Deposit with the cave-in mechanism of stope roof in deep, the influencing factors of roof collapsing in deep stope are fully analysed, so summarized the principles and methods of supporting. To integrate with the engineering experience of Xincheng Gold Deposit, the mechanical characteristics and the mechanism Action of Mortar Bolt are analysed at the same time. On the basis, three supporting parameters design theories of the anchor cable are introduced to design new supporting parameters of the stope so as to give the theoretical foundation of follow-up support parameter selections.Another important study of this paper is the optimization of mining sequence in deep stope. A traditional mining sequence that a layer of ore has been removed and then separated by a layer near the layer of ore mining is dynamically simulated by the FLAC3D, a kind of geotechnical engineering software. Choosing three mining periods, the stress and displacement of the surrounding rock and backfill in each mining period are analysed to determine the variation of its intrinsic. Based on fully understanding of the stress and displacement variation of surrounding rock and backfill, three mining schemes are proposed and two mining periods are selected, then, the stress and displacement in the same mining period of each scheme were comparatively analysed to determine the optimal mining scheme. Through the study, the parameters of anchor support and the optimal mining scheme are determined, providing an important theoretical basis for mining operations in Xincheng Gold Deposit-630m middle segment and deeper segment, which also has high reference value for similar mines.

Related Dissertations

  1. The Setting Bases of Working Pressure in LNG Systems and Orthogonal Experiment Design of Heat Exchangers,TQ051.5
  2. Study on Springback of High-Strength Steel Stamping,TG386
  3. Numerical Simulation and Experiment on Hydroforming of Cups with Controllable Radial Pressure,TG386
  4. Research on Technology and Mechanism of Joining Cemented Carbide to Carbon Steel,TG454
  5. Global Stability of Telescopic Boom with Impact of Lap between Booms and Friction,TH211.6
  6. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  7. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  8. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  9. Research on Automatic Detection Algorithm for Substructure Distress of Highway Pavement Based on SVM,U418.6
  10. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  11. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  12. Numerical Simulation of Biomass Direct Reburning,TK16
  13. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  14. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  15. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  16. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  17. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  18. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  19. Research on Autamatic Music Structrue Analysis,TN912.3
  20. Research on the Classification Based on the Reconstruction of Solder Joint,TP391.41
  21. Research on Transductive Support Vector Machine and Its Application in Image Retrieval,TP391.41

CLC: > Industrial Technology > Mining Engineering > Mine the pressure and support > Mine support equipment
© 2012 www.DissertationTopic.Net  Mobile