Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability
Manufacturing an intended recipe of tails, binder and water, cemented paste backfill (CPB) is employed to refill the cavities created in underground mining operations. To ensure that it remains stable and forms a solid structure, filling slurry must be supported by a rigid barricade at the bottom of...
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Elsevier
2025-02-01
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| Series: | Engineering Science and Technology, an International Journal |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2215098625000217 |
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| author | Di Wu Liang Liu Erol Yilmaz Shilong Zheng |
| author_facet | Di Wu Liang Liu Erol Yilmaz Shilong Zheng |
| author_sort | Di Wu |
| collection | DOAJ |
| description | Manufacturing an intended recipe of tails, binder and water, cemented paste backfill (CPB) is employed to refill the cavities created in underground mining operations. To ensure that it remains stable and forms a solid structure, filling slurry must be supported by a rigid barricade at the bottom of the mining area. Fill structures’ process is guided via coupled thermal/hydraulic/mechanical/chemical developments, which can directly affect the stability of barricade. Hence, it is essential to study the pressure changes and distribution within the barricade. A fully coupled THMC numerical model was established in the current study in order to predict mechanical features and temperature changes inside CPB, and to measure effect of these changes on barricade’s stability. Predictive outcomes obtained from the model built were compared with the results of a field experiment, showing good consistency and thus proving model’s validity in mimicking evolution of temperature change and its effect on strength features of barricade in the course of backfill hydration. The verified multi-physical field model was used to numerically study the change of lateral pressure of barricade under different working conditions. The results show that properly increasing the initial temperature of CPB and increasing the distance between the barricade and the stope can effectively alleviate the lateral pressure on the barricade. The consequences of the existent research could offer a vital guideline on the topic of backfill barricade’s stability analysis. |
| format | Article |
| id | doaj-art-67d1f41c76684ca98c1d509b2f57e1ba |
| institution | Kabale University |
| issn | 2215-0986 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Engineering Science and Technology, an International Journal |
| spelling | doaj-art-67d1f41c76684ca98c1d509b2f57e1ba2025-02-06T05:11:53ZengElsevierEngineering Science and Technology, an International Journal2215-09862025-02-0162101966Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stabilityDi Wu0Liang Liu1Erol Yilmaz2Shilong Zheng3School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, ChinaSchool of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, ChinaDepartment of Civil Engineering, Geotechnical Division, Recep Tayyip Erdogan University, Fener, Rize TR53100, Turkey; Corresponding author at: Geotechnical Division, Department of Civil Engineering, Recep Tayyip Erdoğan University, Zihni Derin Campus, Fener, Rize TR53100, Turkey.School of Civil and Resource Engineering, University of Science and Technology Beijing, Beijing, ChinaManufacturing an intended recipe of tails, binder and water, cemented paste backfill (CPB) is employed to refill the cavities created in underground mining operations. To ensure that it remains stable and forms a solid structure, filling slurry must be supported by a rigid barricade at the bottom of the mining area. Fill structures’ process is guided via coupled thermal/hydraulic/mechanical/chemical developments, which can directly affect the stability of barricade. Hence, it is essential to study the pressure changes and distribution within the barricade. A fully coupled THMC numerical model was established in the current study in order to predict mechanical features and temperature changes inside CPB, and to measure effect of these changes on barricade’s stability. Predictive outcomes obtained from the model built were compared with the results of a field experiment, showing good consistency and thus proving model’s validity in mimicking evolution of temperature change and its effect on strength features of barricade in the course of backfill hydration. The verified multi-physical field model was used to numerically study the change of lateral pressure of barricade under different working conditions. The results show that properly increasing the initial temperature of CPB and increasing the distance between the barricade and the stope can effectively alleviate the lateral pressure on the barricade. The consequences of the existent research could offer a vital guideline on the topic of backfill barricade’s stability analysis.http://www.sciencedirect.com/science/article/pii/S2215098625000217BarricadeLateral pressureCemented paste backfillTemperatureCoupled model |
| spellingShingle | Di Wu Liang Liu Erol Yilmaz Shilong Zheng Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability Engineering Science and Technology, an International Journal Barricade Lateral pressure Cemented paste backfill Temperature Coupled model |
| title | Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability |
| title_full | Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability |
| title_fullStr | Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability |
| title_full_unstemmed | Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability |
| title_short | Numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability |
| title_sort | numerical prediction of strength and temperature changes within cemented paste backfill considering barricade stability |
| topic | Barricade Lateral pressure Cemented paste backfill Temperature Coupled model |
| url | http://www.sciencedirect.com/science/article/pii/S2215098625000217 |
| work_keys_str_mv | AT diwu numericalpredictionofstrengthandtemperaturechangeswithincementedpastebackfillconsideringbarricadestability AT liangliu numericalpredictionofstrengthandtemperaturechangeswithincementedpastebackfillconsideringbarricadestability AT erolyilmaz numericalpredictionofstrengthandtemperaturechangeswithincementedpastebackfillconsideringbarricadestability AT shilongzheng numericalpredictionofstrengthandtemperaturechangeswithincementedpastebackfillconsideringbarricadestability |