DETERMINATION OF MAXIMUM HEIGHT OF A FACE WITH BLASTED ROCKS FOR FRONT WHEEL LOADER EASY OPERATION

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Parent Category: Geo-Technical Mechanics, 2013

Category: Collection of scientific papers «Geotekhnicheskaya Mekhanika» Issue 110

UDC 622.271.33

Anisimov O.A., Ph.D.(Tech.), Senior Researcher (SHEI «NMU»)

Abstract. Front loaders with different capacity of buckets are used in many countries-mineral producers. The loaders are used in basic operations: rock excavating from the face and handling or transporting for short distances. While rocks are excavated from the face, the undermined loosened rocks fall at the level of the face floor. The paper presents different types of the undermined rock falls in the face. The falling is a dynamic, relatively fleeting process, which occurs in result of disturbed equilibrium between the shearing forces and retentivity acting in the blasted rocks undermined by an excavator or loader. The author calculates a needed height of the undermining face for easy operation of the front loaders. The face height is primarily determined by the extracted material and its physical and mechanical properties and by other characteristics. The findings allow to specify a range of stable face slope heights for safety work of loaders.

Keywords: wheel loader, the height of the face, the stability of rock, collapsed rock mass.

References:

1. Trubetskoy, K.N. (1985), Tehnologiya primeneniya i parametryi karernyih pogruzchikov [Application technology and options of оpencast mining loaders], Nedra, Moscow, USSR.

2. Belyaкоv, Yu.I. (1977), Sovershenstvovanie tehnologii vyiemochno-pogruzochnyih rabot na karerah [Improving the technology of excavation and loading operations in the оpencast mining], Nedra, Moscow, USSR.

3. Goncharov, S.A. (1988), Peremeschenie i skladirovanie gornoy massyi: Ucheb. posobie dlya vuzov [Moving & storage of rock mass: Studies. manual for schools], Nedra, Moscow, USSR.

4. Malyushetskiy, Yu.N. (1957), Usloviya ustoychivosti bortov karerov [Conditions for stability of pit walls], Izd-vo AN USSR, Kiev, USSR.

About the author:

Anisimov Oleg,Candidate of Technical Sciences (Ph.D), Senior Researcher, Associate Professor of open-pit mining State Higher Educational Institution «National Mining University» (SHEI “NMU”), Dnipropetrovsk, Ukraine, This email address is being protected from spambots. You need JavaScript enabled to view it. .

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