2 edition of Airblast and ground vibration generation and propagation from contour mine blasting found in the catalog.
Airblast and ground vibration generation and propagation from contour mine blasting
Virgil J. Stachura
Bibliography: p. 11.
|Statement||by Virgil J. Stachura, David E. Siskind, and John W. Kopp.|
|Series||Report of investigations ;, 8892, Report of investigations (United States. Bureau of Mines) ;, 8892.|
|Contributions||Siskind, D. E., Kopp, John W.|
|LC Classifications||TN23 .U43 no. 8892, TN279 .U43 no. 8892|
|The Physical Object|
|Pagination||ii, 31 p. :|
|Number of Pages||31|
|LC Control Number||84600051|
Siskind: The Generation of Low-Frequency Long-Duration Vibrations from Surface Mine Blasting at Blanford, IN Stagg: RI Effects of Repeated Blasting on a Wood-Frame House Stachura: RI Airblast and Ground Vibration Generation and Propagation from Contour Mine Blasting Dick: IC Explosive and Blasting Procedures Manual. fragmentation, ground vibration and airblast prior to blasting operations. However, artificial neural network (ANN) is preferred over the other predictive techniques due to its ability to incorporate the numerous factors affecting the outcome of a blast among other advantages.
Mines has studied various aspects of ground vibration, airblast, and instrumen-tation, culminating in Bulletin in (37)5• In that publication, Nicholls extensively reviewed blast design effects on the generation of vibrations, ground vibration and airblast propagation, and seismic instrumentation. The Online Books Page. Online Books by. D. E. Siskind. Books from the extended shelves: Siskind, D. E.: Airblast and ground vibration generation and propagation from contour mine blasting / ([Washington, D.C.]: U.S. Dept. of the Interior, Bureau of Mines, ), also by Virgil J. Stachura and John W. Kopp (page images at HathiTrust) Siskind, D. E.: Airblast instrumentation and measurement.
When ground vibrations and airblast over pressure levels are high, they can cause human annoyance and even cause damage to nearby structures. The objective of the present study is the measurement and evaluation of the ground vibration and airblast levels under the current blasting practices at the limestone quarries of Assiut. Ground vibrations and airblast phenomenon from explosive sources are major challenges in surface mining. While the available energy releases, apart from useful usages for rock fragmentation and displacement, a considerable portion of explosive energy is wasting in the form of undesirable environmental side effects like ground vibration and.
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AIRBLAST AND GROUND VIBRATION GENERATION AND PROPAGATION FROM CONTOUR MINE BLASTING By Virgil J. Stachura, 1 David E. Siskind, 2 and John W, Kopp 3 ABSTRACT The Bureau of Mlnes studied airblast and ground vibrations produced by surface coal mine blasting in Appalachia to determine the topo.
Airblast and ground vibration generation and propagation from contour mine blasting [Virgil J. Stachura] on *FREE* shipping on qualifying offers.
The Bureau of Mines studied airblast and ground vibrations produced by surface coal mine blasting in appalachia to determine the topographic or other region-specific effects on generation and propagation. Arrays of seismographs were used to measure blast effects in both rolling-terrain and steep-slope contour coal mining areas.
“Airblast and Ground Vibration Generation and Propagation From Contour Mine Blasting” by Virgil J. Stachura, David E. Siskind and John W. Kopp. U.S. Department of the Interior, Bureau of Mines. “Airblast Instrumentation and Measurement Techniques for Surface Mine Blasting” by Virgil J.
Stachura, David E. Siskind and Alvin J. Engler. 5 Prediction, Control and Damage thresholds of Ground Vibration from Opencast Blasting Introduction Generation and Propagation of Ground Vibration from Opencast Blasting Commonly Used Blast Vibration Predictors Geometrical Spreading Inelastic Attenuation or Damping Inelastic Attenuation Factor.
The magnitude of ground vibration and air blast, sound level data evaluated varied between and mm/s, and Kpa, and Lp (dB) respectively. Ground Vibration and Airblast Limits for Blasting in Mines and Quarries Blasting Limit Guidelines v 2 1.
PURPOSE This document describes the policy of the Department of Natural Resources and Environment with respect to the limits on blasting impacts at residential premises and other Sensitive Sites.
This guideline does not apply to control. Airblast or Air Overpressures from Blasting. As in the case of ground vibration waves, air overpressure waves radiate outward from a blast, diminishing with distance.
Air, acting as a fluid, can only transmit compression waves. There are various sources of airblast, some of which the Bureau of Mines identified in their report, RI. Both ground vibrations and airblast cause structures to shake structures. Occupants in structures that are located far from a blast may experience shaking from vibration and airblast as two separate, closely spaced events.
This can be particularly bothersome, as it prolongs the duration of structure shaking and leads. Airblast and ground vibration generation and propagation from contour mine blasting. [Avondale, Md.]: U.S.
Dept. of the Interior, Bureau of Mines, (OCoLC) Online version: Stachura, Virgil J. Airblast and ground vibration generation and propagation from contour mine blasting.
ROCK BLASTING and the COMMUNITY The concern of damage from ground vibration, airblast, and flyrock from blasting are a major concern to both the nearby landowners and ODOT as the quarry owner. In most cases these concerns are based on misunderstandings and unsubstantiated fears resulting from a lack of information.
Blasting operations cause several adverse environmental effects: ground vibrations, airblast, flyrock, generation of fines, fumes and dust.
It is important to control all these effects while carrying out blasting operations as increasingly projects are being subjected to scrutiny and at times closure. the mine boundary, all remained well below accepted industry standards and guidelines.
The air-blast and ground vibration levels monitored and recorded were considered to be normal for sur-face blasting operations and had no negative impact on the nearby township of Manyama. Keywords Airblast, Blasting, Chimiwungo Pit, Seismographs, Vibration 1. Ground Vibration 6 Generation of blast vibration 7 Wave forms of blast vibration 8 Parameters influencing propagation and intensity of ground vibration 10 Reduction of ground vibration 11 Air Overpressure 12 CHAPTER 3 PREDICTION OF GROUND VIBRATION 14 Peak Particle Velocity(PPV) In this paper, a different methodology to control and predict ground vibrations from blasting is presented.
This methodology uses a semi-empirical approach, where the generation and propagation of ground vibration waves and the ground vibration characteristics at a point of interest are considered through the collection of a signature waveform.
Ground vibration: Air blast Introduction On surface mining, blasting technique may be considered as the most economical method used for fragmenting rocks masses. Nonetheless, only % of the used energy is served for rocks fragmenting and displacing, while the rest is wasted in the form of ground vibration, air blast, noise and fly-rocks .
Airblast and ground vibration generation and propagation from contour mine blasting / By Virgil J. Stachura, John W.
Kopp and D. Siskind. Abstract. Bibliography: p. Mode of access: Internet Topics: Coal mines and mining, Blast effect, Blasting. Air Blast In Mining - This software enables air blast levels, resulting in the area surrounding the quarry to be assessed based on one or more air vibration measurements.
Graphical representation of sonic law generation with regression analysis and coefficient values for Air Vibration Satellite and terrain view of contour plans for Air.
Safe levels of ground vibration from blasting range from to in/sec peak particle velocity for residential-type structures. In the hard-rock mining industry, the generation of fines. Air and ground vibration from blasting is an unwanted side effect of explosive utilisation for excavation.
The actual damage measure of ground vibration is the Peak Particle Velocity (PPV) of the conducting ground medium or wave acceleration [ 3] [ 4].
POTENTIAL OF AIRBLAST OVERPRESSURE AND GROUND VIBRATION FROM QUARRY BLASTING TO INCREASE THE FREQUENCY OF ROCKFALLS ON MT. COONOWRIN Cedric Roberts Environmental Operations, Integrated Assessment Branch, Queensland Environmental Protection Agency, Brisbane, Queensland, Australia Abstract.The essential features of the ground vibration arriving at a remote point can be illustrated in Figure Figure – Wavetrace from a single hole blasting shown P, S and R wave arrivals.Blasting by conventional techniques using detonating fuse produced ground vibrations and air blast noise greater than the desired limits.
Properly planned blast design and blast parameters, like spacing, burden, depth of hole, stemming, etc. as well as adoption of a shock tube initiation system reduced the ground vibrations and air blast noise.