Location of Repository

Simulation of the generation and propagation of blast induced shock waves

By Gavin John Yuill

Abstract

Hybrid modelling of blast vibration uses the signal produced from a single hole test shot to simulate the vibration that would be produced by a full-scale production blast. This simulation can be used to determine optimum hole timings to minimise the vibration generated at a point of interest. This thesis studies the assumptions that are\ud made to facilitate the use of hybrid modelling with emphasis placed on near to mid field applications.\ud \ud A highly accurate seismograph is developed and used to monitor a series of test blasts carried out in limestone and chalk. The repeatability of single hole test shots is\ud investigated. It is shown that in the near field single holes are generally highly repeatable even with relatively major differences in design. It is also shown that an\ud inversion of the radial and transverse vibration traces may occur. The factors which affect the vibration magnitude are also explored, showing that the level of confinement can have a large effect on the magnitude of vibration.\ud \ud Two, three and five hole production blasts are examined to determine the signal generated by each hole in the blast. It is shown that in a two hole blast the second hole can produce an inverted signal in the radial and transverse components.\ud \ud The three and five hole are disassembled by using a computer program to test every possible combination of convolved single holes and select the best. It is concluded\ud that the complex interaction of the vibration generated by each blast hole makes it very difficult to model the vibration generated by a production blast in the near field

Publisher: School of Chemical and Process Engineering (Leeds)
Year: 2003
OAI identifier: oai:etheses.whiterose.ac.uk:907

Suggested articles

Preview

Citations

  1. (2001). A "Sampling Theroem" -Agrilent Technologies Lab Assignment #3, Agilent Technologies,
  2. (1998). A Comparative Study On Numerical Methods Used For The Prediction Of Blast Vibration" Environmental Issues and
  3. (1965). An Algorithm For The Machine Computation Of The Complex Fourier Series" doi
  4. Application Of B&K Equipment To Frequency Analysis" Brael and Kjxr,
  5. (1995). Application Of Computer Assisted Modelling To Final Wall Blast Design"
  6. (2001). Application Specific Optimization Of Regularization For Electrical Impedance Tomography" doi
  7. (1964). Attenuation Of Ground Vibrations From Blasting"
  8. (1966). Avoiding Damage To Residence From Blasting Vibrations" Highway Res.
  9. (1985). Blast Vibration Monitoring And Control" Prentice-hall, doi
  10. (1987). Blasting Guidance Manual" Office of Surface Mining Reclamation and Enforcement, United States Department of the Intefior,
  11. Case Studies In The Application Of Firing Time Optimizatiod
  12. (1998). cc The Application Of Transfer Functions To Blast Vibration Analysis"
  13. (1959). Comparative Studies Of Explosives In Granite"
  14. Compression Waves Generated In Rock By Cylindrical Charges: A Comparison Between A Computer Model And Field Measurements" doi
  15. Computer Modelling Of Bench Blasting For Grade Control"
  16. Constant Q-Wave Propagation And Attenuation"' doi
  17. Coupling Small Vibration Gauges To Soil"
  18. (1953). Damage To Structures By Ground Vibration Due To Blasting"
  19. (1992). Digital Seismographs Are Inaccurate - But Does It Matter? "
  20. Digital Signal Processing" Prentice-Hall,
  21. (1984). Dual Channel FFT Analysis (Part 1)" Brdel and Kjxr Technical Review,
  22. Effect Of Charge Weight On Vibration Levels For Millisecond Delayed Quarry Blasts" Earthquake Notes,
  23. (1966). Effect Of Charge Weight On Vibration Levels From Quarry Blasting" RI 6774, United States Bureau of Mines,
  24. Effects Of VOD, Explosive Column Length And Type Of Explosive On Ground Vibration Characteristics Over Distance"
  25. (1973). Fourier Transforms And Their Physical Applications"'
  26. Frequency Analysis And The Use Of Response Spectra For Blast Vibration Assessment In Mining"
  27. Generation Of Strain Waves In Rock By An Explosion In A Spherical Cavity" doi
  28. (1985). Geophone Ground Coupling" Geophysics: The Leading Edge,
  29. (1998). Improving The Performance Of A Geophone Through Capacitive Position Sensing And Feedback"
  30. ISRM: Suggested Method For Blast Vibration Monitoring"
  31. (1980). Measurement Of Blast-Induced Ground Vibrations And Seismograph Calibration" doi
  32. (1988). Method For Determining Amplitude-Frequency Components Of Blast Induced Ground Vibrations"
  33. Methods Of Continuous Shock Front Position Measurement" doi
  34. Modelling Of Blast Vibrations"
  35. Near-Source Characterization Of The Seismic Wavefield Radiated From Quarry Blasts" doi
  36. On The Damage Zone Surrounding A Single Blasthole" doi
  37. Perception Of Sound And Vibration At Low Frequencies" doi
  38. Proposed Method Of Reducing Ground Vibration From Delay Blasting"
  39. Radiation From a Cylindrical source of finite length" doi
  40. Radiation From A Finite Cylindrical Explosive Source" doi
  41. (1962). Review Of Criteria For Estimating Damage To Residences From Blasting Vibrations"
  42. (2000). S-Q CC-D Reduction Of Blast Vibration By Means Of Sequentially Optimized Delay Blasting"
  43. (1963). Seismic Waves Generated By Chemical Explosions, Final Report" Air Force Cambridge Research Laboratories,
  44. (1959). Spherical Propagation Of Explosion Generated Strain Pulses In Rock"
  45. (1966). Strain Wave Theory In Rock Blasting" 8 th Rock Mechanics Symposium,
  46. (1980). Structure Response And Damage Produced By Ground Vibration From Surface Mine Blasting" RI 8507, United States Bureau of Mines,
  47. (1986). Studies In The Generation Of Blast Induced Seismic Waves In The Context Of Opencast Mining And Quarrying"
  48. Surface Vibrations Due To A Vertical Column Of Explosive" Int. I Rock Mech.
  49. The Analysis And Processing Of Signals"
  50. (2001). The Analysis Of Signature Vibrations To Help Control Vibration Frequency" Proc. BAI I Ot" High-Tech Seminar on state of the art blasting technology, instrumentation and explosives,
  51. (1994). The Application Of Detonator Timing In Vibration Control: A Case Study"
  52. The Attenuation Constant Of Earth Materials"
  53. The Effects Of Finite Velocities Of Detonation And Propagation On The Strain Pulses Induced In Rock By Linear Charges"
  54. The Form And Laws Of Propagation Of Seismic Wavelets" doi
  55. (1983). The Modelling Of Long Cylindrical Charges Of Explosives"
  56. (1978). The Modem Technique Of Rock Blasting"
  57. The Stress Wave From A Finite, Cylindrical Explosive Source"
  58. The Use Of Ranks To Avoid The Assumption Of Normality Implicit In The Analysis Of Variance" doi
  59. Time Dependant Friction In Rock"
  60. (1960). Transmission Coefficient For Ground Vibrations Due To Blasting"
  61. (1992). VIBReX -A Predictive Modelling Code For Assessment Of The Effect Of Blast Design On Ground Vibration"

To submit an update or takedown request for this paper, please submit an Update/Correction/Removal Request.