dc.contributor.author |
Mpofu, Mvikel
|
|
dc.contributor.author |
Ngobese, Sibusiso SG
|
|
dc.contributor.author |
Maphalala, B
|
|
dc.contributor.author |
Roberts, David P
|
|
dc.contributor.author |
Khan, Sumaya
|
|
dc.date.accessioned |
2022-05-27T08:27:18Z |
|
dc.date.available |
2022-05-27T08:27:18Z |
|
dc.date.issued |
2021-01 |
|
dc.identifier.citation |
Mpofu, M., Ngobese, S.S., Maphalala, B., Roberts, D.P. & Khan, S. 2021. The influence of stemming practice on ground vibration and airblast. <i>Journal of the Southern African Institute of Mining and Metallurgy, 121.</i> http://hdl.handle.net/10204/12424 |
en_ZA |
dc.identifier.issn |
2225-6253 |
|
dc.identifier.issn |
2411-9717 |
|
dc.identifier.uri |
http://dx.doi.org/10.17159/2411-9717/1204/2021
|
|
dc.identifier.uri |
http://hdl.handle.net/10204/12424
|
|
dc.description.abstract |
This paper details an assessment of stemming practices at a South African opencast coal mine and their influence on ground vibration and air blast. Quantitative and qualitative analysis methods were used for the study. The parameters assessed for the quantitative analyses included stemming length, stemming material type, blast-hole depth, burden, and spacing. Pre-blast data from the mine was analysed to determine the deviation between actual and mine design stemming parameters. Mine design stemming length was also compared to the rule-of-thumb stemming lengths. Peak particle velocity (ground vibration) and air blast data from seismograph stations around the mine was analysed to determine the correlation between stemming length and excessive ground vibration and air blast. The qualitative analysis involved observations of blasting procedures at the mine to determine compliance with mine procedures. Some level of non-compliance of actual stemming parameters to design stemming parameters was found, which initially suggested that non-compliance may have contributed to excessive air blast. However, further analysis of the seismograph results indicated no direct correlation between stemming length and excessive air blast and ground vibration. Since stemming parameters are interrelated, it is crucial that all blasting procedures, including stemming, are executed in accordance with best practice, and recorded accurately. There is a need for digital systems for capturing on-bench blasting parameters, as the currently used manual data recording and reporting systems are inefficient and prone to error. Improvements to blast designs are possible through efficient and accurate data recording and reporting systems. |
en_US |
dc.format |
Fulltext |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
https://www.saimm.co.za/Journal/v121n01p1.pdf |
en_US |
dc.source |
Journal of the Southern African Institute of Mining and Metallurgy, 121 |
en_US |
dc.subject |
Air blast |
en_US |
dc.subject |
Blasting |
en_US |
dc.subject |
Ground vibration |
en_US |
dc.subject |
Opencast mining |
en_US |
dc.subject |
Stemming |
en_US |
dc.title |
The influence of stemming practice on ground vibration and airblast |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
10 |
en_US |
dc.description.note |
Article is licensed under a Creative Commons Attribution License |
en_US |
dc.description.cluster |
Mining |
en_US |
dc.description.impactarea |
Mining and Mineral Resources |
en_US |
dc.identifier.apacitation |
Mpofu, M., Ngobese, S. S., Maphalala, B., Roberts, D. P., & Khan, S. (2021). The influence of stemming practice on ground vibration and airblast. <i>Journal of the Southern African Institute of Mining and Metallurgy, 121</i>, http://hdl.handle.net/10204/12424 |
en_ZA |
dc.identifier.chicagocitation |
Mpofu, Mvikel, Sibusiso SG Ngobese, B Maphalala, David P Roberts, and Sumaya Khan "The influence of stemming practice on ground vibration and airblast." <i>Journal of the Southern African Institute of Mining and Metallurgy, 121</i> (2021) http://hdl.handle.net/10204/12424 |
en_ZA |
dc.identifier.vancouvercitation |
Mpofu M, Ngobese SS, Maphalala B, Roberts DP, Khan S. The influence of stemming practice on ground vibration and airblast. Journal of the Southern African Institute of Mining and Metallurgy, 121. 2021; http://hdl.handle.net/10204/12424. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Mpofu, Mvikel
AU - Ngobese, Sibusiso SG
AU - Maphalala, B
AU - Roberts, David P
AU - Khan, Sumaya
AB - This paper details an assessment of stemming practices at a South African opencast coal mine and their influence on ground vibration and air blast. Quantitative and qualitative analysis methods were used for the study. The parameters assessed for the quantitative analyses included stemming length, stemming material type, blast-hole depth, burden, and spacing. Pre-blast data from the mine was analysed to determine the deviation between actual and mine design stemming parameters. Mine design stemming length was also compared to the rule-of-thumb stemming lengths. Peak particle velocity (ground vibration) and air blast data from seismograph stations around the mine was analysed to determine the correlation between stemming length and excessive ground vibration and air blast. The qualitative analysis involved observations of blasting procedures at the mine to determine compliance with mine procedures. Some level of non-compliance of actual stemming parameters to design stemming parameters was found, which initially suggested that non-compliance may have contributed to excessive air blast. However, further analysis of the seismograph results indicated no direct correlation between stemming length and excessive air blast and ground vibration. Since stemming parameters are interrelated, it is crucial that all blasting procedures, including stemming, are executed in accordance with best practice, and recorded accurately. There is a need for digital systems for capturing on-bench blasting parameters, as the currently used manual data recording and reporting systems are inefficient and prone to error. Improvements to blast designs are possible through efficient and accurate data recording and reporting systems.
DA - 2021-01
DB - ResearchSpace
DO - 10.17159/2411-9717/1204/2021
DP - CSIR
J1 - Journal of the Southern African Institute of Mining and Metallurgy, 121
KW - Air blast
KW - Blasting
KW - Ground vibration
KW - Opencast mining
KW - Stemming
LK - https://researchspace.csir.co.za
PY - 2021
SM - 2225-6253
SM - 2411-9717
T1 - The influence of stemming practice on ground vibration and airblast
TI - The influence of stemming practice on ground vibration and airblast
UR - http://hdl.handle.net/10204/12424
ER -
|
en_ZA |
dc.identifier.worklist |
24100 |
en_US |