Dissertation > Excellent graduate degree dissertation topics show

Study on the Penetrability Coefficient of the Coal

Author: SunJingLai
Tutor: MaZuoLiang
School: CCRI
Course: Mining engineering
Keywords: Permeability coefficient
CLC: TD712
Type: Master's thesis
Year: 2009
Downloads: 344
Quote: 0
Read: Download Dissertation

Abstract


Permeability of coal mine gas disasters prevention and control ability is one of the important parameters, at present commonly used is the permeability coefficient, measuring the commonly used radial flow method to calculate formula exist sometimes couldn't find the right formula to calculate the permeability coefficient or occur at the same time two calculation formula and to calculate the permeability coefficient of two different problems. In order to solve these two problems, in the original calculation formula are analyzed in detail research, get a better than radial flow method calculation formula is more simple and reasonable calculation formula, in order to facilitate the field of permeability coefficient calculation can also use the original permeability coefficient calculation formula correction equation. Using Darcy's law is derived for the new permeability coefficient K ', the permeability coefficient is the speed of dimensional, clear expressed its physical meaning. WangPo coal mine in 3207 working face using tracer gas SF < sub > and < / sub > measure the permeability coefficient K ', the establishment of a gas permeability coefficient λ and permeability coefficient K ', the relationship between the use of radial flow method was used for determination of permeability coefficient, so that we can make full use of the original equipment permeability coefficient measurement. And by using CFD software simulation to calculate the coefficient of permeability of the site, the site test results verify each other.

Related Dissertations

  1. Coal and gas outburst Hou Wasi Dynamic Emission Law,TD713
  2. Study on Pavement’s Waterproofness of Concrete Bridge,U443.33
  3. The Durability of Water-permeable Concrete in Acid Rain Environment Study,TU528
  4. Study on the Influencing Factors of the Permeability of Asphalt Pavements,U416.217
  5. Hydraulic Performance Experiment for GCL in Landfill Liner,TU57
  6. Hydrodynamic Behavior & Meterial Optimization Research of Bridge Deck Pavement in Moist Heat Areas,U444
  7. Asphalt the stable gravel drainage layer design and test research,U416
  8. The Finite Element and Genetic Algorithm Used for Seepage Inverse Problem of High Dams,TV223.4
  9. Fiberglass polyester overlay on the highway engineering research,U414
  10. Analysis of Laboratory Test Result of Cemented Soil of High Moisture Content,TU521
  11. An Approach to the Determination of Hydraulic Conductivity and Optimal Schemes of Groundwater Withdrawal for the Ninghebei Wellfield in Tianjin,P641.2
  12. Tung oil , rice juice to improve soil mechanics and geotechnical characteristics of the environment,TU43
  13. Studies on Thermodynamic Properties of the System Containing Lithium and Boron-Li2SO4-Li2B4O7-H2O with Isopiestic Method at Different Temperatures,O642.4
  14. Macropore drainage asphalt mixture composition and properties of the design,U416.217
  15. Experimental Research on the Hydraulic Conductivity and the Water-air Flow in a Sand Column,P641.2
  16. Taking into account the loading, deformation and time consolidation settlement of embankment on soft theory and simulation studies,U416.1
  17. Containing lithium , boron Salt System LiCI-Li_2B_4O_7-H_2O, MgB_4O_7-H_2O 298.15K thermodynamic properties under study,O642.1
  18. Research and Application of Porous Asphalt Pavement,U416.217
  19. Infiltrates the Flow Field Inversion Research Ased on the BP Neural Network’s Earth Stone Dam,TP183
  20. Study on the Consolidation Theory for Vertical Drains Considering the Actual Shape of Influence Zone,TU470

CLC: > Industrial Technology > Mining Engineering > Mine safety and labor protection > Mine atmosphere > Mine Gas
© 2012 www.DissertationTopic.Net  Mobile