Experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jet
Abstract As a novel type of pulsed water jet (PWJ), the pressurized pulsed water jet (PPWJ) shows great potential in the field of rock fragmentation engineering. In this study, the macro and micro morphologies of erosion craters on different targets (sandstone and granite) were measured to investiga...
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Nature Portfolio
2025-01-01
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| Series: | Scientific Reports |
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| Online Access: | https://doi.org/10.1038/s41598-024-84194-6 |
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| author | Yuanfei Ling Xiaoqiang Wang Jiren Tang Yangkai Zhang |
| author_facet | Yuanfei Ling Xiaoqiang Wang Jiren Tang Yangkai Zhang |
| author_sort | Yuanfei Ling |
| collection | DOAJ |
| description | Abstract As a novel type of pulsed water jet (PWJ), the pressurized pulsed water jet (PPWJ) shows great potential in the field of rock fragmentation engineering. In this study, the macro and micro morphologies of erosion craters on different targets (sandstone and granite) were measured to investigate the rock fragmentation characteristics of PPWJ. The results show that the fragmentation processes of granite and sandstone are significantly different from each other. The erosion craters on the sandstone surface exhibit a conical shape, with fragmentation manifesting as the successive exfoliation of mineral particles; the main destruction pattern of sandstone is the fracture of the bonding surfaces between particles. In contrast, the erosion craters on the granite surface assume a spoon-like form, with fragmentation presenting as flake-like exfoliation caused by the expansion of internal fractures; the main destruction pattern of granite is intragranular and intergranular fracture. The erosion volume of granite is much larger than that of sandstone, indicating that PPWJ-induced fragmentation of brittle and hard rock is more likely to form large-volume spalling. Under the same conditions, compared with continuous water jet (CWJ) and interrupted pulsed water jet (IPWJ), the specific energy consumption of rock fragmentation by PPWJ is reduced by 60.2% and 54%, respectively. The results of this study are expected to lay the foundation for promoting the application of PPWJ in rock fragmentation engineering. |
| format | Article |
| id | doaj-art-d3b2334d0bcd43fba8fa5b89cf9eef09 |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-d3b2334d0bcd43fba8fa5b89cf9eef092025-01-05T12:15:53ZengNature PortfolioScientific Reports2045-23222025-01-0115111710.1038/s41598-024-84194-6Experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jetYuanfei Ling0Xiaoqiang Wang1Jiren Tang2Yangkai Zhang3School of Mechatronics Engineering, Henan University of Science and TechnologySchool of Mechatronics Engineering, Henan University of Science and TechnologyState Key Laboratory of Coal Mine Disaster Dynamics and Control, Chongqing UniversityState Key Laboratory of Shield Machine and Boring TechnologyAbstract As a novel type of pulsed water jet (PWJ), the pressurized pulsed water jet (PPWJ) shows great potential in the field of rock fragmentation engineering. In this study, the macro and micro morphologies of erosion craters on different targets (sandstone and granite) were measured to investigate the rock fragmentation characteristics of PPWJ. The results show that the fragmentation processes of granite and sandstone are significantly different from each other. The erosion craters on the sandstone surface exhibit a conical shape, with fragmentation manifesting as the successive exfoliation of mineral particles; the main destruction pattern of sandstone is the fracture of the bonding surfaces between particles. In contrast, the erosion craters on the granite surface assume a spoon-like form, with fragmentation presenting as flake-like exfoliation caused by the expansion of internal fractures; the main destruction pattern of granite is intragranular and intergranular fracture. The erosion volume of granite is much larger than that of sandstone, indicating that PPWJ-induced fragmentation of brittle and hard rock is more likely to form large-volume spalling. Under the same conditions, compared with continuous water jet (CWJ) and interrupted pulsed water jet (IPWJ), the specific energy consumption of rock fragmentation by PPWJ is reduced by 60.2% and 54%, respectively. The results of this study are expected to lay the foundation for promoting the application of PPWJ in rock fragmentation engineering.https://doi.org/10.1038/s41598-024-84194-6Pulsed water jetPulsating loadFailure mechanismRock fragmentation performance |
| spellingShingle | Yuanfei Ling Xiaoqiang Wang Jiren Tang Yangkai Zhang Experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jet Scientific Reports Pulsed water jet Pulsating load Failure mechanism Rock fragmentation performance |
| title | Experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jet |
| title_full | Experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jet |
| title_fullStr | Experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jet |
| title_full_unstemmed | Experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jet |
| title_short | Experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jet |
| title_sort | experimental investigation on rock fragmentation charactersitics of pressurized pulsed water jet |
| topic | Pulsed water jet Pulsating load Failure mechanism Rock fragmentation performance |
| url | https://doi.org/10.1038/s41598-024-84194-6 |
| work_keys_str_mv | AT yuanfeiling experimentalinvestigationonrockfragmentationcharactersiticsofpressurizedpulsedwaterjet AT xiaoqiangwang experimentalinvestigationonrockfragmentationcharactersiticsofpressurizedpulsedwaterjet AT jirentang experimentalinvestigationonrockfragmentationcharactersiticsofpressurizedpulsedwaterjet AT yangkaizhang experimentalinvestigationonrockfragmentationcharactersiticsofpressurizedpulsedwaterjet |