Authors: V.A. Shalamanov, D.V. Boyko

Title of the article: Justification of the required grades of frost resistant and crushable rocks for quarry roads surfacing

Year: 2019, Issue: 5, Pages: 54-58

Branch of knowledge: 25.00.20 Geomechanics, rock destruction by explosion, mine aerogasdynamics and mining thermal physics

Index UDK: 622.012.3:625

DOI: 10.26730/1999-4125-2019-5-54-58

Abstract: In Kuzbass, the volume and cost of open-pit coal production are constantly growing, in 2018 it exceeded 165 million tons. It is possible to reduce the cost of open-pit coal mining by using carbon-containing rocks in the construction of temporary technological roads for vehicles.
Purpose: to substantiate the possibility of using overburden rocks for installation of technological roads, taking into account their frost resistance and crushing.
The paper substantiates the proposals for the recommended grades of frost resistant and crushable rocks used for the installation of coatings of quarry roads, based on the analysis of the impact of weather and climatic conditions and loads from the impact of technological vehicles on the performance of the structural layer of pavement.
As a result of researches it is established that the grade by rocks crushability in water-saturated state of a nonlinear increase with the increase of velocity of longitudinal ultrasonic waves, and the required grade by frost resistance linearly increases with the increase of the service life of roads and is for the conditions of Kuzbass to 2 F15 , F25 – from 2 to 3 , F50, from 3 to 7 and F100 – more than 7 years.

Key words: frost resistance crushability road pavement technological roads

Receiving date: 29.11.2019

Publication date: 31.12.2019

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