ABRASIVENESS OF ROCKS AS AN ESSENTIAL PARAMETER IN ASSESSMENT OF APPLICATION RISK OF HEADING MACHINES
Successful realization of mining and underground civil infrastructure projects requires using equipment and technological tools rationally. One of the most important problems arising during underground work is tool abrasion. At this, along with the strength of rocks, abrasiveness is an important parameter for determining wear and abrasion of rock-breaking tools. An emphasis is laid on the fact that in Russia, compressive strength of rocks is determined using available state standards (GOST) which comply with foreign analogues, while abrasiveness of rocks lacks such standard. It is shown that in many countries with developed mining industry, abrasiveness of rocks is estimated by the index of abrasiveness CAI, while in domestic practice, it is determined by the method of Baron–Kuznetsov. It is proposed to introduce a state standard for determining abrasiveness of rocks, which should be based on the method of CERCHAR. It is also necessary to establish quantitatively expressed relationships between different indicators of abrasiveness, and the major of them are CAI and the abrasiveness index by Baron–Kuznetsov. In addition, the definition of abrasiveness of rocks should be included in the program of mandatory tests to determine physical and technical properties of rocks for any projects in the field of mining and civil construction. The implementation of these proposals will reduce the risks of errors in economic cost planning and in evaluation of mining process flows. It will also improve mine management quality.
For citation: Averin E. A. Abrasiveness of rocks as an essential parameter in assessment of application risk of heading machines. Gornyy informatsionno-analiticheskiy byulleten'. 2019;3:184-191. [In Russ]. DOI: 10.25018/0236-1493-2019-03-0-184-191.
: Averin E. A.
E.A. Averin, PhD, Engineer-Designer, OOO Skuratovsky Experimental Plant,
300911, Tula, Russia, e-mail: firstname.lastname@example.org.Key words
Abrasiveness, rocks, heading machines, tool abrasion, equipment downtime risk elimination, state standard development prerequisites.References
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