Directional fracturing of rock by soundless chemical demolition agents
Rock fracturing is one of the main processes in the modern mining, mineral recovery, and energy industry, which is associated with the numerous environmentally harmful influences. Environmentally friendly alternative to conventional fracturing methods is non-explosive technology, which based on usin...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-02-01
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| Series: | Heliyon |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844024020991 |
| _version_ | 1797267744323796992 |
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| author | Ivan Sakhno Svitlana Sakhno |
| author_facet | Ivan Sakhno Svitlana Sakhno |
| author_sort | Ivan Sakhno |
| collection | DOAJ |
| description | Rock fracturing is one of the main processes in the modern mining, mineral recovery, and energy industry, which is associated with the numerous environmentally harmful influences. Environmentally friendly alternative to conventional fracturing methods is non-explosive technology, which based on using of soundless chemical demolition agents (SCDA). In this study, method of directional fracturing, which based on creating tensile stress concentrators on the hole surface in the required location, was proposed. Considering the influences of additional installation in the borehole of stress concentration cartridge on stress field nearby the hole, a case study of the effectiveness of proposed rock fracturing method was performed in this paper. A numerical simulation was used to study the stress distribution around the borehole with SCDA in different rock types. It was found that cartridge installation leads to the occurrence of the tensile stress concentrations only near to the gap of the cartridge. The value of tensile stress concentration in the proposed rock fracturing method significantly depends on a cartridge gap distance. An increase in the gap distance leads to a decrease in the stress concentration factor. For granite, sandstone and mudstone, relationships of stress concentration factor to cartridge gap distance that was divided on hole diameter were obtained. The equation for calculating of the hole spacing for the directional fracturing method was proposed. The results of the study are confirmed by experiments in-situ on the directional fracturing of rocks in a quarry and in a coal mine. |
| first_indexed | 2024-03-08T00:22:58Z |
| format | Article |
| id | doaj.art-7cc14de7d99a45daae7bcd2eea7a9777 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-04-25T01:21:27Z |
| publishDate | 2024-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-7cc14de7d99a45daae7bcd2eea7a97772024-03-09T09:27:06ZengElsevierHeliyon2405-84402024-02-01104e26068Directional fracturing of rock by soundless chemical demolition agentsIvan Sakhno0Svitlana Sakhno1Corresponding author.; Donetsk National Technical University, 29, Sofia Kovalevska Street, Lutsk, Volyn region, 43012, UkraineDonetsk National Technical University, 29, Sofia Kovalevska Street, Lutsk, Volyn region, 43012, UkraineRock fracturing is one of the main processes in the modern mining, mineral recovery, and energy industry, which is associated with the numerous environmentally harmful influences. Environmentally friendly alternative to conventional fracturing methods is non-explosive technology, which based on using of soundless chemical demolition agents (SCDA). In this study, method of directional fracturing, which based on creating tensile stress concentrators on the hole surface in the required location, was proposed. Considering the influences of additional installation in the borehole of stress concentration cartridge on stress field nearby the hole, a case study of the effectiveness of proposed rock fracturing method was performed in this paper. A numerical simulation was used to study the stress distribution around the borehole with SCDA in different rock types. It was found that cartridge installation leads to the occurrence of the tensile stress concentrations only near to the gap of the cartridge. The value of tensile stress concentration in the proposed rock fracturing method significantly depends on a cartridge gap distance. An increase in the gap distance leads to a decrease in the stress concentration factor. For granite, sandstone and mudstone, relationships of stress concentration factor to cartridge gap distance that was divided on hole diameter were obtained. The equation for calculating of the hole spacing for the directional fracturing method was proposed. The results of the study are confirmed by experiments in-situ on the directional fracturing of rocks in a quarry and in a coal mine.http://www.sciencedirect.com/science/article/pii/S2405844024020991Rock fracturingRock blastingRock excavationTensile stressMiningRock mechanics |
| spellingShingle | Ivan Sakhno Svitlana Sakhno Directional fracturing of rock by soundless chemical demolition agents Heliyon Rock fracturing Rock blasting Rock excavation Tensile stress Mining Rock mechanics |
| title | Directional fracturing of rock by soundless chemical demolition agents |
| title_full | Directional fracturing of rock by soundless chemical demolition agents |
| title_fullStr | Directional fracturing of rock by soundless chemical demolition agents |
| title_full_unstemmed | Directional fracturing of rock by soundless chemical demolition agents |
| title_short | Directional fracturing of rock by soundless chemical demolition agents |
| title_sort | directional fracturing of rock by soundless chemical demolition agents |
| topic | Rock fracturing Rock blasting Rock excavation Tensile stress Mining Rock mechanics |
| url | http://www.sciencedirect.com/science/article/pii/S2405844024020991 |
| work_keys_str_mv | AT ivansakhno directionalfracturingofrockbysoundlesschemicaldemolitionagents AT svitlanasakhno directionalfracturingofrockbysoundlesschemicaldemolitionagents |