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Application of wavefront reinforcement modelfor reduction blast-induced ground vibration |
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| รหัสดีโอไอ | |
| Creator | 1. Pirat Jaroonpattanapong 2. Ormsin Indarid 3. Pham Van Hoa |
| Title | Application of wavefront reinforcement modelfor reduction blast-induced ground vibration |
| Publisher | Research and Development Office, Prince of Songkla University |
| Publication Year | 2018 |
| Journal Title | Songklanakarin Journal of Science and Technology |
| Journal Vol. | 40 |
| Journal No. | 2 |
| Page no. | 424 |
| Keyword | wavefront reinforcement model, ground vibration, particle velocity, shear surface wave, Mae Moh Mine |
| URL Website | http://rdo.psu.ac.th/sjstweb/index.php |
| ISSN | 0125-3395 |
| Abstract | Ground vibration from blasting is generally controlled by reducing the explosive charge weight per delay. However,lowering explosive charge weight per delay may increase the fragmentation size of blasted material. Richards (2008) introduceda wavefront reinforcement model to account for input burden, spacing and sequential delay timing for each blasthole. This studytested his wavefront reinforcement model with a predetermined surface wave velocity at 350 m/s to determine the direction andextent of increases in ground transmitted vibrations. The results from 21 experimental blasts on overburden material (Red Beds)at various patterns and delay timing at Mae Moh Mine indicated that ground vibrations were higher in areas of wavefrontreinforcement compared to non-wavefront reinforcement in 16 (76%) of the experimental blasts. The designed drilling patternsand sequential initiation has shown that the wavefront reinforcement areas mainly occur in front and to the back of the blastingdirection. |
