Model experimental study of filling property of ring-type geotextile tube
ObjectiveThis article introduces a novel circular geotextile bag storage and drainage technology, which effectively addresses the issue of limited space for dredged silt storage. The filling of circular geotextile bags is crucial for the implementation of this technology. To investigate the characte...
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| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Editorial Department of Journal of Sichuan University (Engineering Science Edition)
2024-01-01
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| Series: | 工程科学与技术 |
| Subjects: | |
| Online Access: | http://jsuese.scu.edu.cn/thesisDetails#10.12454/j.jsuese.202400453 |
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| Summary: | ObjectiveThis article introduces a novel circular geotextile bag storage and drainage technology, which effectively addresses the issue of limited space for dredged silt storage. The filling of circular geotextile bags is crucial for the implementation of this technology. To investigate the characteristics of the filled circular geotextile bags, including shape, height, filling mechanism, and pressure, this paper presents indoor model experiments conducted under various working conditions. Specifically, we examined the height and filling mechanism of the bags filled under three different methods: counterclockwise, radial, and vertical filling, at varying speeds.MethodsThis article conducted indoor model tests of circular geotextile bag filling under various experimental conditions. It investigated the height and filling mechanism of the geotextile bags after filling under three different methods: counterclockwise filling, radial filling, and vertical filling, with filling speeds of 2.43, 2.55, 2.66 and 2.77 m/s, respectively. Due to space limitations at the experimental site, the selected circular geotextile bag had an outer diameter of 1.2 m and an inner diameter of 0.7 m. Given that sedimentation of coarse particles could potentially affect the electromagnetic flowmeter, a fixed volume bucket was used to measure the filling speed before each test condition began. The bucket was filled evenly within a certain timeframe, after which the filling speed was calculated. Additionally, three repeated experiments were conducted to determine the accurate filling speed for this article. The filling material chosen was a mixture of sand and water. The circular geotextile bag was positioned horizontally, and a slurry pump was utilized to fill the bag with the sand-water mixture. A polar coordinate system was established, using the center of the circular geotextile bag as the origin, to determine the radius and angle of typical points within the bag. Following the completion of each test condition, the height of the bag at various points was recorded. The random forest algorithm was applied to simulate and predict the height of the bag after filling in the counterclockwise direction, where the independent variables were the radius and angle of each point. When conducting simulation predictions, 75% of the data was randomly selected for modeling, and the remaining 25% of the data was used for validation. The results were relatively accurate, with <italic>M</italic><sub>SE</sub> values of 5×10<sup>-5</sup>, 3×10<sup>-4</sup>, and2×10<sup>-5</sup>, respectively.The counterclockwise filling mechanism operates as followsConclusionsUnder 12 different working conditions, when the tube bag is filled counterclockwise at a speed of 2.77 m/s, its average height after filling reaches its peak at 0.09 m, with a relatively uniform distribution of sediment particles inside the bag. Leveraging machine learning principles, the heights of the filled tube bags under three different filling methods—counterclockwise, radial, and vertical—were simulated and predicted using the random forest algorithm, based on experimentally measured heights. The results were notably accurate, exhibiting <italic>M</italic><sub>SE</sub> values of 5×10<sup>-5</sup>, 3×10<sup>-4</sup>, and 2×10<sup>-5</sup>, respectively. The findings presented in this article offer a crucial theoretical foundation and technical reference for the construction of circular tube bag yards. |
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| ISSN: | 2096-3246 |