Test bench and studies of rock fracture mechanism in cutting potassium blocks

The article gives essential elements of information on rock fracture by mining cutter picks. This process should be considered as a random process described by the associated characteristics which are possible to evaluate quantitatively using an experimental method of research, for instance, bench testing. Accordingly, design and manufacture of test benches for the experimental analysis of rock fracture process in cutting is a relevant theoretical and practical problem. The test bench and procedure of determining force and energy parameters of rock fracture by a single cutting pick are described. It is shown that the main parameter that influences the process of cutting is a ratio of the pick spacing to the depth of cut. The bench testing results on fracture of potassium blocks by a single cutting pick allowed determining the average cutting force on the single pick, the specific energy input and the mass fraction of particle size of –0.25 mm against the depth of cut. The optimum range of the pick spacing/depth of cut ratio at the minimum specific energy in fracture of potassium blocks by a single cutting pick is identified.

Keywords: laboratory test bench, cutting pick, rock, potassium ore, cutting pattern, specific energy input, cutting force, pick spacing, depth of cut, cutting resistance.
For citation:

Shishlyannikov D. I., Gribov D. S., Prosovskiy K. A., Tyubeev I. H., Sitnikov D. A. Test bench and studies of rock fracture mechanism in cutting potassium blocks. MIAB. Mining Inf. Anal. Bull. 2024;(10):78-91. [In Russ]. DOI: 10.25018/0236_1493_2024_10_0_78.

Acknowledgements:

The study was supported by the Ministry of Science and Higher Education of the Russian Federation, Project No. FSNM-2023-0005).

Issue number: 10
Year: 2024
Page number: 78-91
ISBN: 0236-1493
UDK: 622.232.72
DOI: 10.25018/0236_1493_2024_10_0_78
Article receipt date: 09.04.2024
Date of review receipt: 31.05.2024
Date of the editorial board′s decision on the article′s publishing: 10.09.2024
About authors:

D.I. Shishlyannikov1, Dr. Sci. (Eng.), Assistant Professor, Professor, e-mail: dish844@gmail.com,
D.S. Gribov2, Head of the Mining Department, e-mail: dmitriy.gribov@mail.ru,
K.A. Prosovskiy2, Leading Engineer, e-mail: prosovskij86@mail.ru,
I.H. Tyubeev1, Educational Master, e-mail: tyubeev2001@mail.ru,
D.A. Sitnikov1, Laboratory Assistant, e-mail: stdm2023@mail.ru,
1 Perm National Research Polytechnic University, 614990, Perm, Russia,
2 JSC «VNII Galurgy», 198216, Saint-Petersburg, Russia,

 

For contacts:

D.S. Gribov, e-mail: dmitriy.gribov@mail.ru.

Bibliography:

1. Shishlyannikov D. I. Sovershenstvovanie oborudovaniya i rezhimov raboty prokhodcheskoochistnykh kombaynov kaliynykh rudnikov kak energoeffektivnykh ob"ektov funktsionirovaniya [Improvement of equipment and operating modes of tunneling and cleaning combines of potash mines as energy-efficient objects of operation], Doctor’s thesis, Saint-Petersburg, 2021, 273 p.

2. Kazachenko G. V., Basalai G. A., Gridyushko D. V. On the destruction of rocks by mechanical cutting. Gornaya mekhanika i mashinostroenie. 2022, no. 1, pp. 86—91. [In Russ].

3. Trushkin O. B., Akchurin H. I. The pressure of pdc cutters on plastic-brittle rock in the process of its destruction. Journal of Mining Institute. 2020, vol. 244, pp. 448—453. [In Russ]. DOI: 10.31897/ PMI.2020.4.7.

4. Maksimov A. B. Increasing the number of enrichable classes in potash ore produced by Ural-20R tunneling and cleaning combines. Aktual'nye problemy povysheniya effektivnosti i bezopasnosti ekspluatatsii gornoshakhtnogo i neftepromyslovogo oborudovaniya. 2018, vol. 1, pp. 116—122. [In Russ].

5. Maksimov A. B. Obosnovanie parametrov porodorazrushayushchikh ispolnitel'nykh organov i pogruzochnogo oborudovaniya prokhodchesko-ochistnykh kombaynov «Ural 20R» [Substantiation of parameters of rock–destroying executive bodies and loading equipment of Ural 20R tunneling and cleaning combines], Candidate’s thesis, Ekaterinburg, 2019, 18 p.

6. Zhabin A. B., Averin E. A., Polyakov A. V. The index of equivalent strength of rocks. Russian Mining Industry Journal. 2018, no. 5, pp. 112—115. [In Russ]. DOI: 10.30686/1609-9192-2018-5-141112-115.

7. Shishlyannikov D. I., Suhanov A. E. Improvement of rock-breaking tools of heading-and-winning machine of potash mines. E3S Web of Conferences. 2020, vol. 177, article 03018. DOI: 10.1051/ e3sconf/202017703018.

8. Prushak V. Ya., Vysotskaya N. A., Kazachenko G. V. Method of calculating the power balance of a tunneling combine with coaxial rotors and combined executive bodies. Aktual'nye voprosy mashinovedeniya. 2017, no. 7, pp. 273—276. [In Russ].

9. Averin E. A., Zhabin A. B., Polyakov A. V., Linnik Y. N., Linnik V. Y. Preliminary assessment of roadheaders efficiency based on empirical methods and index of equivalent rock strength. Mining of Mineral Deposits. 2019, vol. 13, no. 3, pp. 113—118. DOI: 10.33271/mining13.03.113.

10. Popova M. S., Kharitonov A. Yu. Automation of the process of studying the mechanism of destruction of rock by a cutter. Handbook. An Engineering Journal. 2023, no. 8 (317), pp. 23—27. [In Russ]. DOI: 10.14489/hb.2023.08.pp.023-027.

11. Andreeva L. I., Krasnikova T. I., Ushakov Yu. Yu. Methodology for the formation of an effective system for ensuring the operability of mining equipment. Minerals and Mining Engineering. 2019, no. 5, pp. 92—106. [In Russ]. DOI: 10.21440/0536-1028-2019-5-92-106.

12. Neskoromnykh V. V., Pushmin P. S., Popova M. S. The influence of surfactants on the curvature of wells during drilling in anisotropic rocks. Bulletin of the Tomsk Polytechnic University. Geo Assets Engineering. 2020, vol. 331, no. 9, pp. 146—158. [In Russ]. DOI: 10.18799/24131830/2020/9/2819.

13. Zhabin A. B., Polyakov A. V., Averin A. E., Linnik Yu. N., Linnik V. Yu. On accounting for nonoptimal modes of cutting rocks with tangential cutters. Ugol'. 2019, no. 7, pp. 20—24. [In Russ]. DOI: 10.18796/0041-5790-2019-7-20-24.

14. Arsentiev Yu. A., Solovyov N. V., Nazarov A. P. Substantiation of the main parameters of the mechanism of destruction of rocks and structural elements of blade bits. Inzhener-neftyanik. 2019, no. 2, pp. 13—20. [In Russ].

15. Evstratov V. A., Voronova E. Yu., Apachanov A. S., Grigoriev V. I., Sukharnikova V. A., Breslavtseva I. V. Improving the efficiency of screw modules of mining machines. Mining Equipment and Electromechanics. 2021, no. 2 (154), pp. 42—47. [In Russ]. DOI: 10.26730/1816-4528-2021-2-42-47.

16. Shishlyannikov D. I., Trifanov M. G., Trifanov G. D. Evaluation of the loading of drives of combines «Ural-20R» during two-stage development of the face. Journal of Mining Institute. 2020, vol. 242, pp. 508—512. [In Russ]. DOI: 10.31897/PMI.2020.2.508.

17. Davydenko A. M., Khomenko V. L. Planetary rock-breaking structures and the possibilities of their application in diamond drilling. Scientific Bulletin of National Mining University. 2020, no. 4, pp. 75—78.

18. Tuncay E., Özcan N. T., Kalender A. An approach to predict the length-to-diameter ratio of a rock core specimen for uniaxial compression tests. Bulletin of Engineering Geology and the Environment. 2019, vol. 78, no. 7, pp. 5467—5482. DOI: 10.1007/s10064-019-01482-6.

19. Gao M., Zhang K., Zhou Q., Zhou H., Liu B., Zheng G. Numerical investigations on the effect of ultra-high cutting speed on the cutting heat and rock-breaking performance of a single cutter.Journal of Petroleum Science and Engineering. 2020, vol. 190, article 107120. DOI: 10.1016/j.petrol.2020.107120.

20. Li H. S., Liu S. Y., Xu P. P. Numerical simulation on interaction stress analysis of rock with conical picks. Tunnelling and Underground Space Technology. 2019, vol. 85, pp. 231—242. DOI: 10. 1016/j.tust.2018.12.014.

21. Gabov V. V., Nguyen K. L., Nguyen V. S., Le T. B., Zadkov D. A. Substantiation of geometric and operating parameters of screw executive bodies ensuring the efficiency of loading coal onto a downhole conveyor. Ugol'. 2018, no. 2, pp. 32—35. [In Russ]. DOI: 10.18796/0041-5790-2018-2-32-35.

22. Chang C., Yang Y., Ren H., Cai C., Liu Y., Yang M. Investigation of the cross-cutting polycrystalline diamond compact bit drilling efficiency. Shock and Vibration. 2021, vol. 30, pp. 15—27. DOI: 10.1155/2021/8841255.

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