Dissertation > Excellent graduate degree dissertation topics show

The Deformation Mechanism Analysis and Harnessing Measure of Soft Laneway in Zhongqu Ore Mine

Author: LiHongJie
Tutor: WenChangShun
School: Chinese Geology University (Beijing)
Course: Structural Geology
Keywords: soft rock laneway deform feature bolting and shotcreting numerical simulation
CLC: TD353
Type: Master's thesis
Year: 2005
Downloads: 140
Quote: 1
Read: Download Dissertation

Abstract


The Zhongqu ore mine locates in Luqu county of Gannan which is in Gansu province. The breakthrough of prospecting for ore has been made since 1991 when the Dashui ore mine was found in this area. Geologists have found Geertuo ore bed, Gongbei ore bed and Zhongqu ore bed, which make up of the ore field which is the largest scale and has the most industrial value at present in metallogenic belt of Xiqinling. Joint and crack develop heavily in laneway because the ore produce in fractured zone. The laneway has been formed and deteriorated by the tectonic stress. The roof collapse exists in local areas. The laneway shows apparently the character of jointed soft rock, which bring about much difficulty to excavate and dig. In addition, the top and bottom of laneway are filled with calcite and formed breccia due to the later tectonic process in ort laneway, which not only result in dilution of ore, but also bring about much threat to the stability of laneway. Therefore, if the laneway is not disposed properly, the large roof collapse will be aroused and it will lead to the difficulty of ore reclaim. What is more, it will bring much threat to miner and facility. This article is based on the harnessing of laneway and the field investigation, and attaches much importance to the research of joint and crack. At the same time, the rock is classified different mass grade according to Rock Mass Rating (RMR) and put forward a set of abridged table of rock mass grade which is applicable to the field construction. This article defines the influential factor of bolting and shotcreting through the research of the principle of bolting and shotcreting and advances the supporting solution. In the last chapter, the laneway is simulated by FLAC3D program, which can supply many evidence to the subsequent dig. The supporting solution brings about much benefit to corporation and guarantee to the personal safety.

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 the pressure and support > Mine support equipment > Roadway support
© 2012 www.DissertationTopic.Net  Mobile