Dissertation > Excellent graduate degree dissertation topics show

Study on the Floor Water Invasion Regularity Mining on the Top of Water-pressured

Author: DaiChangQing
Tutor: HeTingJun
School: Anhui University of Technology
Course: Mining engineering
Keywords: floor water invasion similar material numerical simulation ANSYS software damage depth the utmost pressure stress distribution water invasion mechanism
CLC: TD742
Type: Master's thesis
Year: 2005
Downloads: 562
Quote: 17
Read: Download Dissertation

Abstract


Mining on the top of water-pressured, the water inrush in Coal floor is a complex nonequilibrium and nonlinear evolution process which is affected by many factors. the mechanism of it is a process that the high water-pressured in the floor water-resisting layer burst into the caving void in the working face in the form of outburst and delaying or sluggish, the water break through the obstruct of the water-resisting layers in the floor along the channels inside the water-resisting layers under the working floor. Theoretically, it is very difficult to exactly describe the basic water inrush process characteristics due to the heterogeneity of rock materials, the complexity of geology and the uncertainty of mining.Combined with the example of the 3629 working face in Zhu zhuang Coal mine, this paper applies the methods of theory analysis, similar material simulation and numerical simulation of Ansys to study the water invasion regularity in the floor mining on the top of water-pressured. This has an important theoretic and realistic significance of achieving the safety production in Coal mine and preventing the water-inrush from the Coal floor.The following work is completed in this paper.①Analyzing the types and affecting factors of the floor water invasion, this paper makes certain of the reason of the water invasion in the floor.②This paper applies the fracture mechanics theory, the elastic-plasticity theory and the finite element method to resolve the damage depth, the transferring character of the stress and the utmost pressure of water invasion in the floor of the water-resisting layer in the coal seam with the complex effect of the mining pressure and the water pressure in the floor water-resisting layers. In addition, the resolution is put into the extract project of the 3629 working face in Zhu zhuang Coal mine forecasting the water invasion in the floor which plays an important guiding role in mining this working face safely.③Making use of the similar material model and the large FEM software of ANSYS to simulate the terrane stress distribution regularity and the floor movement damage character in the coal seam, this paper analyses the mechanism and the damage regularity of the floor water invasion in the coal seam.

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. Numerical Simulation of Film Cooling in Turbine Cascade with Non-Axisymmetric Endwall Method,V231.3
  6. High Speed Aerodynamic Convection and Coupled Heat Transfer of Complicated Bodies,V215.4
  7. The Analysis on Characteris of Vibration Source about Vertical Vibration of Surrounding Environment Induced by Rail Transit,U211.3
  8. Study on the Heat Transfer Characteristics of Particle Cluster in Circulating Fluidized Bed,TK124
  9. Numerical Simulation of SNCR Process of a 600MW Utility Boiler,TK222
  10. Numerical Simulation of Biomass Direct Reburning,TK16
  11. Numerical Simulation on Pulverized Coal Combustion Process in a 670T/H Tangential Firing Furnace,TK224.11
  12. Numerical Simulation on the Combustion Process in the Furnace of a 1000MW Lignite-Fired USC Boiler,TK224.11
  13. Study on Gas-Solid Two-Phase Flow in Spouted Beds,TK173
  14. Experimental Study and Numerical Simulation on Aerodynamic Field of Tangential Bias Swirl Burner,TK223.23
  15. Characteristic Study of Combustion in Central Reverse Flame Chamber,TK223.21
  16. Numerical Simulation and Contrastive Analysis of Labyrinth Seals and Leaf Seals,TK263.2
  17. Numerical Study on Phosphorus Distribution in Water Environment of the Three Gorges Reservoir,X832
  18. The Design and Performance Simulation of External Valve Small Displacement Pump,TE933.3
  19. Analysis of the Impact of Tailings Dam Stability under Seepage Role,TV649
  20. Study on Hydraulic Fracturing of Low Permeability Reservoir,P618.13
  21. Numerical Simulation and Experimental Study of Air-Assisted Sprayer of Orchard,S491

CLC: > Industrial Technology > Mining Engineering > Mine safety and labor protection > Mine drainage and water shutoff > Mine Water
© 2012 www.DissertationTopic.Net  Mobile