Dissertation > Excellent graduate degree dissertation topics show

Study on Coal Rock Caving Laws and Technological Parameters of Top-Coal Caving of Fully Mechanized Mining with Great Cutting Height for Thick Coal Seam

Author: WangJun
Tutor: LiuChangYou
School: China University of Mining and Technology
Course: Mining engineering
Keywords: Large mining height Caving mining Top coal caving Caving technology Law
CLC: TD823
Type: Master's thesis
Year: 2008
Downloads: 675
Quote: 5
Read: Download Dissertation

Abstract


Implement our thick and extra - thick coal seam of fully mechanized caving mining trends Xinglong Coal Mine of Yanzhou Mining Group field conditions based on the basis of a detailed analysis of the results of previous studies , the use of theoretical analysis, numerical simulation , experimental the room similar material simulation and field test a variety of research methods , in-depth study of a thick coal seam of fully mechanized release the coal mining rock caving law and caving process parameters . First analysis of large mining height conditions affect the top coal caving factors , including natural geological factors and technology factors . Beam inclination of the top coal caving of the space and into the arch the apheresis height and bracket cover . Apheresis height variation , plasticity and fracture of coal - rock mass stress field , as well as top coal crushing followed by analysis of the study results show that : the broken coal role of supporting pressure to consider random mining height increases , the stress increased area larger support pressure on the top coal crushing effect enhanced ; better work ahead of top coal plastic failure zone increases, the top coal crushing effect . Again analyzed the the apheresis height put coal pitch and put the coal on the effect of coal - rock flow law and caving law , laid the foundation for effective emission control is to determine a reasonable the caving process parameters and top coal . Finally, the combination of engineering practice field measurement analysis , and experimental results verify the correctness of the conclusions of the thesis , and on-site application of technical and economic effect .

Related Dissertations

  1. By Stages Acupuncture Law Treatment Strok Hemiparalysis’s Clinical Research,R246
  2. The True Estimations of China’s Unemployment and the Re-examination of Okun’s Law,F224
  3. Study of Classic Style Renaissanceand It′Sapply in Modern Fashion Design,TS941.2
  4. Of Environmental Rights suability,D922.68
  5. Wen Zhenying old Chinese medicine experts in academic thinking and clinical experience and Treating children with diarrhea drug law,R249.2
  6. Research on Network Supervision under the Perspective of Democracy and Rule of Law,D630.9
  7. The Deposition Rule and Gene Expression Involved in Yolk Cholesterol in Different Layer Breeds,S831
  8. Research on Legalization of Political Power Operation from the Vision of the Rule of Law,D920.0
  9. The National People's Congress law enforcement inspection work perfect in the context of government functions convert,D624
  10. Legal Protection of Coastal Forest System in Shangdong Province,D922.63
  11. Macro Law Perspective Study Population,D922.1
  12. Xi'an Lianhu District Urban Management Standardization of comprehensive administrative enforcement,D927
  13. GIS and GPS- based Land Resources dynamic inspection system design and implementation,P208;P228.4
  14. Study on Implementation of Environmental Law in Coal Area,D922.68
  15. Condominium \,D923
  16. Denggang V Baiyin Company Infirngement Analysis,D923
  17. The Legal Theory Analysis About the Being Punished Behavior of Seeing the Danger But Not to Rescue,D924.3
  18. Research on Securities Broking Contracts,F832.51
  19. Government procurement contracts Legal Issues,D922.2
  20. The Legal Regulation on Anti-Trust Law of Trade Association,D922.294
  21. On the heart Certificate of Public,D915.13

CLC: > Industrial Technology > Mining Engineering > Mining > Coal mining > Underground mining methods
© 2012 www.DissertationTopic.Net  Mobile