Geopolymer-based modification of blasting sealing materials and optimization of blasting block size in coal seams of open pit mines
International Journal of Mining Science and Technology, ISSN: 2095-2686, Vol: 33, Issue: 12, Page: 1551-1562
2023
- 2Citations
- 4Captures
- 1Mentions
Metric Options: CountsSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Most Recent News
Researchers from China University of Mining and Technology Report Recent Findings in Mining Science and Technology (Geopolymer-based modification of blasting sealing materials and optimization of blasting block size in coal seams of open pit ...)
2024 JAN 17 (NewsRx) -- By a News Reporter-Staff News Editor at Computer News Today -- A new study on mining science and technology is
Review Description
This research proposes the utilization of a geopolymer-based blasting sealing material to improve the profitability of coal sales and reduce the rate of coal fragmentation during blasting in open pit mines. The study first focused on optimizing the strength of the sealant material and reducing curing time. This was achieved by regulating the slag doping and sodium silicate solution modulus. The findings demonstrated that increasing slag content and improving the material resulted in an early rise in strength while increasing the modulus of the sodium silicate solution extended the curing time. The slag doping level was fixed at 80 g, and the sodium silicate solution modulus was set at 1.5. To achieve a strength of 3.12 MPa, the water/gel ratio was set at 0.5. The initial setting time was determined to be 33 min, meeting the required field test duration. Secondly, the strength requirements for field implementation were assessed by simulating the action time and force destruction process of the sealing material during blasting using ANSYS/LS-DYNA software. The results indicated that the modified material meets these requirements. Finally, the Shengli Open Pit Coal Mine served as the site for the field test. It was observed that the hole-sealing material’s hydration reaction created a laminated and flocculated gel inside it. This enhanced the density of the modified material. Additionally, the pregelatinized starch, functioning as an organic binder, filled the gaps between the gels, enhancing the cohesion and bonding coefficient of the material. Upon analyzing the post-blasting shooting effect diagram using the Split-Desktop software, it was determined that the utilization of the modified blast hole plugging material resulted in a decrease in the rate of coal fragmentation from 33.2% to 21.1%. This reduction exhibited a minimal error of 1.63% when compared to the field measurement, thereby providing further confirmation of the exceptional plugging capabilities of the modified material. This study significantly contributes to establishing a solid theoretical basis for enhancing the blasting efficiency of open pit mines and, in turn, enhancing their economic advantages.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S2095268623001519; http://dx.doi.org/10.1016/j.ijmst.2023.11.005; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85179824943&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S2095268623001519; https://dx.doi.org/10.1016/j.ijmst.2023.11.005; http://sciencechina.cn/gw.jsp?action=cited_outline.jsp&type=1&id=7631628&internal_id=7631628&from=elsevier
Elsevier BV
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know