Dissertation > Excellent graduate degree dissertation topics show

Research of Spontaneous Combustion "Three-Zone" in Goaf of Coal Mine’s Fully Mechanized Top Coal Face

Author: ZhangXun
Tutor: WangJiRen
School: Liaoning Technical University
Course: Mining engineering
Keywords: goaf oxygen concentration wind speed spontaneous combustion"three-zone" air leakage nitrogen injection
CLC: TD752.2
Type: Master's thesis
Year: 2012
Downloads: 97
Quote: 0
Read: Download Dissertation

Abstract


This study is based on goaf actual situation of8105fully mechanized top-coal caving face,researching on spontaneous combustion "three-zone" in goaf and its scope change, to provide thebasis for eliminating fire hazard in goaf. First, establishing monitoring system in goaf of8105fully mechanized top-coal caving face, analyzing oxygen concentration field distribution, andbasing on oxygen concentration to divide spontaneous combustion goaf area into "three zones".With the fluid calculation software FLUENT, to establish two-dimensional percolation model ofwind speed, analyze wind flow field in goaf, and divide spontaneous combustion goaf area into"three zone" based on wind speed indicator. Compared with the spontaneous combustion "three-zone" divided by oxygen concentration field, to ensure that the "three-zone" division iscorrectly. Then, in this paper, with the application of numerical simulation method, analyzingwind speed flow field changes in goaf under the conditions of air volume adjustment andestablishing wall in the top corner. Based on the flow field, analyzing the scope change ofspontaneous combustion "three-zone". At last, this paper uses beam tube to monitor oxygenconcentration, analyzing the scope change of spontaneous combustion "three-zone" under thecondition of continuous nitrogen injection, to lay the foundation for evaluating the effect ofnitrogen injection. Studying on spontaneous combustion "three-zone" in goaf, would provideguidance to formulate the best fire prevention measures and prevent coal spontaneouscombustion in goaf.

Related Dissertations

  1. Experimental study of roadway flexible material the wind resistance of the air curtain group,TD724
  2. Study on Nitrogen Removal by Soil Aquifer Treatment Process That Enhanced Nature Reoxygenation and Effective Volume,X703
  3. The Study of Goaf’s Flow Field and Gas Distribution Rules Base on Fluent,TD712
  4. Study on Building Damage Rules and Application of Two-Slab Foundation,TD325
  5. Wind Energy Utilization on the Roof of the High-rise Building,TK89
  6. Preparation, Electrical Properties and Applications of La2(Mo1-xVx)2O9-α,TM911.4
  7. Numerical Simulation of Fire Prevention and Control at Goaf of Fully Mechanized Top Coal Caving Workface in Inflammable Extra-thick Coal Seam of Gushan Mine,TD752.2
  8. Research of Fire Prevention and Extinguishing on High Gas Spontaneous Combustion Coal Seam and Island Face of Tianchi Coal Mining,TD752.2
  9. Research on Influence and Countermeasures to Highway above Subsidence-affected Zone of Coal,TD325
  10. Experimental Research of the Optimal Operational Combustion Adjustment in the First Unit of Huaneng Dalian Power Plant,TK227.1
  11. Simulation Research on Spontaneous Combustion Law of Residual Coal in Goaf,TD752.2
  12. Wind Farm Wind Energy Resource Assessment Based-on the Optimization Algorithm,TM614
  13. Study on Gas Prevention and Control Technology at Fully Mechanized Caving Face of Liujia Coal Mine,TD712
  14. Impact of Intermittent Power on Grid Voltage Operating Characteristics,TM712
  15. Corrected Numerical Weather Prediction-BP Neural Network Based Wind Power Short-term Prediction Research,TM614
  16. The Research on Measurement and Control of Water Temperature and Wind Speed in the Car Engine Radiator Performance Test,U464.138.2
  17. The Development of Visual Air Leakage Analysis in Goaf Based on the Network Solutions,TD72
  18. Numerical Analysis of Mining and Visual Calculation of Mining Index in Large-scale Blasting Stope,TD862
  19. The Stability Evaluation of the Overlying Strata of the Goaf for Shi Getai Mine Filed in Shen-fu Mining Area,TD327
  20. Study of Narrow Truss Suspension Bridge Flutter Stability,U441.3
  21. Study of Proper Ventilation Method on Plateau Mine,TD724

CLC: > Industrial Technology > Mining Engineering > Mine safety and labor protection > Mine fire > Mine Fire > Internal fire and prevention
© 2012 www.DissertationTopic.Net  Mobile