PROVIDING OF MINING HOISTS SAFETY WORK IN SAFTS AT DIFFICULT GEOLOGIC AND TECHNOLOGIC CONDITIONS

Details

Parent Category: Geo-Technical Mechanics, 2014

Category: Geo-Technical Mechanics, 2014, Issue 119

UDC 622.673.1:622.272.6

Authors:

IljinS.R., Ph. D. (Tech.), Senior Researcher (IGTM NAS of Ukraine)

Radchenko V.K., M.Sc.(Tech) (State Technical & Mining Inspectorate of Ukraine, «AGAT» Ltd.)

Adorskaya L.G., Ph. D. (Tech.), Senior Researcher,

Samusya S.V., Ph. D. (Tech.), Junior Researcher

(IGTM NAS of Ukraine);

Iljina I.S., Ph. D. (Tech.), Associate Professor,

Iljina S.S., Ph. D. (Tech.), Associate Professor

(State HEI “National Mining University”)

Abstract. The results of the analysis of potentially unstable dynamic processes in parts of mechanical systems of mine hoisting plants are reviewed in the article. It is shown that because of the equipment degradation under long-term operation in difficult geological and mining conditions considered processes can significantly degrade the level of security vertical shafts systems "vessel - reinforcement". It is shown that the mine hoisting plant is a multiply connected priscillarenea dynamical system. In its power train all dynamic processes are energy-connected. In the long-term operating increased wear and violation of links design parameters in certain conditions cause the internal or external resonance with the initiation of shock-cyclic interaction of lifting vessels with reinforcement emergency dangerous level. The sources of such resonances are mechanical processes of interaction of the hoist drum with head ropes, deviations of geometrical and physically-mechanical parameters of reinforcement from design values, the eccentricity of lifting vessel, the mismatch of vessel guides devices parameters and hoisting speed diagram to the conditions of dynamic loadings minimizing on the reinforcement in terms of specific lifting department. The article contains the results of studies showing that the extended section in the middle of the shaft, where the rate of vessels vertical oscillation double-end hoisting plant become close by value, there is an intensive energy exchange between fluctuations of rising and falling rope branches through a hoisting  machine sheave. It causes the increase of the amplitude of lifting vessels horizontal oscillations and causes shock mode of interaction of vessel with reinforcement. The violation of cylindrical form of hoisting machine sheave because of external resonance has the same effect. The presence of sharp bends on transient section of hoisting speed diagram also increases the horizontal loading on the reinforcement because of creating the alternating vertical acceleration of the vessel. This event has significant intensity on emergency braking of hoisting machine. In the shafts with broken geometry in the area of the rock movement combination of global and local long deviations from the vertical with alternating deviations short areas, comparable in length with 2 - 3 length of the vessel, non-optimal choice of roller directors rigidity cases one-way shoes waisting to the guides. It intensifies shock interaction of vessels with reinforcement, because of the increased frequency of meetings of shoe with the moving planes of curved guides working surfaces. The process may have the character of the growing shock loadings avalanche on shaft short sections. The simultaneous occurrence of described negative links interactions on the shaft section with worn reinforcement can cause spontaneous acceleration of its degradation, fatigue damage accumulation of vessel frameworks and the main cause of an accident with heavy financial consequences. The article contains the range of technical measures to reduce rate of dangerous accident in shafts with difficult geological and mining conditions.

Keywords:

 mine hoist plant, mine shaft, mine lifting vessel, diagnostics of mine shaft reinforcement, mine shaft reinforcement, dynamics of mine hoist plants.

References:

1. Garkusha, N.G. (1999), Ob istorii razresheniya odnoj krupnoj problemy gornoj mekhaniki ХХ veka [About history of solution of one great problem of mining mechanics of XX centuary], Mining electromechanics and automatics, no. 2(61), pp. 5 – 8.

2. Belobrov, V.I., Dzenzerskij, V.A., Samusya, V.I. and Iljin, S.R. (2000), Dinamika shahtnyh pod"emnyh ustanovok [Dynamics of mining hoists], Dnepropetrovsk university, Dnepropetrovsk, Ukraine.

3. Iljin, S.R. (1999), «Influence of hoisting machine emergency parameters braking on the dynamics of the system "vessel - reinforcement"», Mining electromechanics and automatics, no. 2(61), pp. 52 – 57.

4. Iljin, S.R. (2000), «Diagnostic model of the influence of traction sheave cylindricity violations on the dynamic interaction of lifting vessels with mine shafts reinforcement», Geo-Technical Mechanics, no. 22, pp. 118 – 121.

5. Iljin, S.R. (2006), «Regularities of dynamic interaction between vessels and hard reinforcement of vertical shafts mine multiple-rope hoist during transient motion», Collection of scientific labours of National mining university, no. 25, pp. 108 – 113.

6. Iljin, S.R. (2010), «The influence of parameters of the speed winding diagrams of hoisting machines on the dynamic efforts in ropes and fatigue effects in the shaft reinforcement elements», Steel ropes, no. 8, pp. 30 – 61.

7. Iljin, S.R., Trifanov, G.D. and Vorobel, S.V. (2011), «Complex experimental examinations of rock shafts skips dynamics», Mining equipment and electrical mechanics, no. 5, pp. 30 – 35.

8. Vorobel, S.V. and  Trifanov, G.D. (2011), «The impact of the speed diagram on the dynamic loadings in system of “lifting vessel - hard reinforcement” and deformation of the lifting vessel frame», Mining equipment and electrical mechanics, no. 12, pp. 16 – 19.

9. Vorobel, S.V., Trifanov, G.D. and Knjazev, A.A. (2007), «Dynamic examination of mine shafts hard reinforcement», Materialy krayevoy nauchno-tekhnicheskoy konferentsiyi studentov, aspirantov I molodikh uchenikh [Materials of regional scientific and technical conference of students, graduate students and young scientists], Problemy kompleksnogo osvoyeniya mestorozhdeniy poleznikh iskopayemykh v Permskom kraye [Problems of complex development of mineral deposits in Perm region], Perm, Russia, pp. 195 – 201.

10. Iljin, S.R. (2008), «Development and substantiation of the common diagnostic model of mining hoisting plants equipment», Geo-Technical Mechanics, no. 76, pp. 44 – 63.

11. Iljin, S.R., Posled, B.S., Adorskaja, L.G., Radchenko, V.K., Iljina, I.S. and Iljina, S.S. (2013), «The Experience Of Dynamic Apparatus Control And Estimation Of Exploitation System Safety “Vessel – Reinforcement” Of Vertical Mining Shafts», [Transport szybowy. Monografia. Institut techniki gornicej], pp. 163 – 175.

12. Iljin, S.R. (1981), «About stability of the loads movement in elastic quides with spatial location of the ropes fixing points for multiple-rope hoist», Publ. Techn. Univ. Heavy Ind., no. 35, pp. 197 – 204.

13. Iljina, I.S. (2005), «Development and substantiation of diagnostics method of systems "lifting vessel - reinforcement" condition during safety braking», Ph. D. thesis, National mining university, Dnepropetrovsk, Ukraine.

14. Iljin, S.R. (2012), «The influence of hoisting speed diagram parameters and load eccentricity on the mine shafts system "vessel - reinforcement" dynamics», Geo-Technical Mechanics, no. 98, pp. 322 – 349.

15. Edinye pravila bezopasnosti pri razrabotke rudnyh, nerudnyh i rossypnyh mestorozhdenij podzemnym sposobom [Single safety rules in the development of ore,  non-ore and placer deposits with underground method] (1977), Nedra, Moscow, SU.

16. Pravila tekhnicheskoj ehkspluatacii ugol'nyh i slancevyh shaht [Rules of technical expluatation of coal and shale mines] (1976), Nedra, Moscow, SU.

17. Iljin, S.R. (2013), «The effect of multiple-rope sheave lining wear on the interaction of lifting vessel with shaft reinforcement quides», Technical maintenance and repair of mining shafts , pub.5, vol. 2, pp. 264 – 273.

18. Iljina, S.S. (2011), «Research of the influence of guides profiles parameters on the skips dynamics in shafts with broken geometry», Dynamics and strength of machines, no. 52, pp. 85 – 93.

19. Samusya, V.I. and Iljina, I.S. (2004), «The methodology and realization of mine hoisting vessels experimental investigations in braking mode with guides of vertical shafts hard reinforcement in industrial environment», Mining, no. 11, pp. 57 – 64.

20. Iljin, S.R. (2014), «Analysis of the influence of geometrical parameters box guides on the dynamic deformation-strength characteristics of reinforcement in terms of wear», Mining equipment and electrical mechanics, no. 9, pp., pp. 54-67.

21. Iljina, S.S. (2004), «Development and substantiation of methods and facilities of dynamic loadings reduction in systems "vessel - reinforcement" of vertical shafts with broken geometry», Ph. D. Thesis, National mining university, Dnepropetrovsk, Ukraine.

22. Samusya, S.V. (2004), «Substantiation of rational parameters and modes of operation of rescue mobile hoisting plants», Ph. D. Thesis, IGTM NAS of Ukraine, Dnepropetrovsk, Ukraine.

About the authors:

Iljin Sergej Rostislavovich, Candidate of Technical Sciences (Ph. D.), Head of the Laboratory of Diagnostics and Tests of Mining Hoisting Plants Problems, M.S. Polyakov Institute of Geotechnical Mechanics under National Academy of Sciences of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it.

Radchenko Vladimir Konstantonovich, Executive Secretary of Board of shaft statement analysis of State Technical & Mining Inspectorate of Ukraine, «AGAT» Ltd

Adorskaya Larisa Georgievna,Candidate of Technical Sciences (Ph. D.), Senior Researcher, Institute of geotechnical mechanics naimed by N.S. Polyakov NAS of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine

Samusya Sergej Vladimirovich,Candidate of Technical Sciences (Ph. D.), Junior Researcher, M.S. Polyakov Institute of Geotechnical Mechanics under National Academy of Sciences of Ukraine (IGTM, NASU), Dnepropetrovsk, Ukraine

Iljina Inna Sergeevna, Candidate of Technical Sciences (Ph. D.), Associate Professor, Department of Mining Mechanics, State Higher Education Institution “National Mining University” (State HEI “National Mining University”), Dnepropetrovsk, Ukraine.

Iljina Svetlana Sergeevna, Candidate of Technical Sciences (Ph. D.) Associate Professor, Department of Mining Mechanics, State Higher Education Institution “National Mining University” (State HEI “National Mining University”), Dnepropetrovsk, Ukraine

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