Impact of impaired permeability on percolating water level and on condition of rock-fill hydrotechnical facility

Authors: Maksimov D.A.

The article considers the mechanisms of impaired permeability impact on the rock-fill hydrotechnical facility quality indirectly, through the influence on the position and geometry of the depression curve classically determined from the results of water measurements in piezometers. The considered mechanisms are demonstrated in terms of the dam at the tailings pond of a dressing plant at a mine in the Murmansk Region. The comparison of the depression curve obtained from the water depth measurements in piezometers and the curve from the visual and geophysical survey of the dam points at the distortion of the depression curve in the body of the test dam in the areas of impaired permeability. The curve obtained by the visual and geophysical survey offers better detailing than the classical method curve. At the same time, the geometry of the obtained curves contains strong disagreement sections due impaired permeability effects, which leads to classically unpredictable and uncontrollable changes in the depression curve, resulting in failure to meet the safety criteria and in collapse of the dam. Furthermore, the article demonstrates the effect of impaired permeability on percolating water level characterized by the depression plane during filling, restoration or reinforcement of the components of the hydrotechnical facility. For instance, after restoration of the test dam bench, with gradual consolidation and mudding of the restored bench in the zone of impaired permeability, the level of percolating water progressively increased on the upper benches. The changed water level in the piezometers located on the overlying bench exceeded the critical design values, which implied the risk of failure of the hydrotechnical facility.

Keywords: hydrotechnical facility, dam, impaired permeability, depression curve, stability.
For citation:

Maksimov D. A. Impact of impaired permeability on percolating water level and on condition of rock-fill hydrotechnical facility . MIAB. Mining Inf. Anal. Bull. 2021;(5—1):280—291. [In Russ]. DOI: 10.25018/0236_1493_2021_51_0_280.

Issue number: 5
Year: 2021
Page number: 280-291
ISBN: 0236-1493
UDK: 626-1/-2:626.134’212
DOI: 10.25018/0236_1493_2021_51_0_280
Article receipt date: 27.01.2021
Date of review receipt: 09.04.2021
Date of the editorial board′s decision on the article′s publishing: 10.04.2021
About authors:

Maksimov D. A., Scientific researcher,, Mining Institute — Subdivision of the Federal Research Centre «Kola Science Centre of the Russian Academy of Sciences», Apatity, Russia.

For contacts:

1. Dasher E. D. Dams are coming down, but not always by choice: the geography of Texas dams, Dam Failures, and Dam Removals. Texas water journal, Vol. 11, no. 1, 2020. pp. 89—129

2. Adamo N., AI-Ansari N., Sissakian V. K., Laue J. Dam Safety: The question of tailings dams. Journal of Earth Sciences and Geotechnical Engineering, Vol.11, no.1, 2020, pp. 1—26 (DOI: 10.47260/jesge/1111)

3. Cambridge M., Shaw D. Preliminary reflections on the failure of the Brumadinho tailings dam in January 2019. Dams Reserv., 29 (2019), pp. 113—123 (DOI: 10.1680/ jdare.19.00004)

4. Leopoldino J. D.C, Dos Anjos C. S., Simões D. P., Fernandes L. F. R. Spatial and temporal analysis of the collapse  of  the  tailings  dam  in  Brumadinho,  Brazil. Revista Agrogeoambiental. 2020. V. 12, no. 3, pp. 47—59 (DOI: 10.18406/2316— 1817v12n320201483)

5. Casagrande P., Parizzi M., Moura A. C. M., Camargos L. M., Zyngier C. M., Barbosa V. S. B., Magalhães D. M., Da Silva G. R. Dam break and human disaster: Córrego do Feijão, Brumadinho, MG. ICCSA 2020: Computational Science and Its Applications. 2020. pp.855—863 (DOI: 10.1007/978—3-030—58820—5_61)

6. Yerro A., Rohe A., Soga K., Modeling internal erosion with the material point method. Procedia engineering. 2017. no. 175, pp. 365—372 (DOI:10.1016/j.proeng.2017.01.048)

7. Azam S., Li Q. Tailings Dam Failures: A Review of the Last One Hundred Years. Geotechnical News. 2010. p. 50—53.

8. Akhmetov E. M., Asemov K. M., Zhumataeva M. O. Research of accidents of hydraulic structures and safety control methods. Izvestiya Tomskogo politekhnicheskogo universiteta. Inzhiniring georesursov. 2020. no. 3. Vol. 331. Pp. 70—83. (DOI: 10.18799/24131830/2020/4/2595) [In Russ]

9. Mel’nikov N. N., Kalashnik  А. I.,  Kalashnik  N. A.,  Zaporozhets  D. V. The use of modern methods for complex studies of the hydrotechnical structures of the Barents sea region. Vestnik Murmanskogo gosudarstvennogo tekhnicheskogo universiteta. 2017. no. 1—1. Vol. 20. pp. 13—20 (DOI: 10.21443/1560—9278—2017—20—1/1—13—20 [In Russ]

10. Maksimov D. A. Indicators of the presence of local disturbances of filtration stability in the body of the embankment hydraulic structure. Problemy nedropol’zovaniya. 2018. no. 2 (17). pp. 98—105. (DOI: 10.25635/2313—1586.2018.02.098)[In Russ]

11. Danilkin A. A., Kalashnik А. I., Zaporozhets D. V., Maksimov D. A. Monitoring of condition of a protecting dam in a zone of working off of a technogenic deposit Kovdorsky GOK. MIAB. Mining Inf. Anal. Bull. 2014. no. 7. pp. 344—351.[In Russ]

12. Abramov N. N., Dyakov А.Yu., Kalashnik А. I. Identification of water-saturated zones in a protective ground hydraulic engineering facility by synchronous electromagnetic and seismic sounding. Gidrotekhnicheskoe stroitel’stvo, 2019. no. 2. pp. 17—21 [In Russ]

13. Maksimov D. A., Dyakov А.Yu. Integration of visual and georadar observation method by using digital technologies to monitor the local disturbances of filtration process in bulk hydraulic facilities. MIAB. Mining Inf. Anal. Bull. 2019. no. S37. pp. 409—416. (DOI: 10.25018/0236—1493—2019—11—37—409—416) [In Russ]

14. Internal erosion of exiting dams, levees and dikes, and their foundations. Volume 2: Case histories, investigations, testing, remediation and surveillance. International commission on large dams. Bulletin. 2016. no.164. p. 199.

Our partners

Подписка на рассылку

Раз в месяц Вы будете получать информацию о новом номере журнала, новых книгах издательства, а также о конференциях, форумах и других профессиональных мероприятиях.