Authors: I.V. Klishin

Title of the article: Improvement of explosive rock removal during the extraction of building materials at the Novosibirsk quarries industrial area

Year: 2026, Issue: 2, Pages: 158-164

Branch of knowledge: 2.8.8 Geotechnology, mining machines

Index UDK: 622.857

DOI: 10.26730/1999-4125-2026-2-158-164

Abstract: The purpose of the work is to develop parameters for drilling and blasting operations in the extraction of construction materials in quarries. The research objectives include the development of combined schemes for the distribution and blasting of borehole charges of explosives in quarries for the extraction of construction materials. The research methods include the generalization of the mining and geological features of quarries for the extraction of construction materials, the generalization of research results using mathematical statistics and correlation analysis, and experimental and industrial testing. Experimental studies have been carried out on explosive rock removal during the extraction of building materials in quarries, where a significant part of the building materials are represented by granitoids, hornstones, siltstones, diabases, sandstones, etc. The height of the ledges on the spent parts of the quarries ranged from 10 to 15 m, the width of the working area of the mining ledge was 48 m. It has been revealed that changes in the conditions of mining due to the increasing complexity of mining and geological conditions, flooding, and an increase in the depth of mining operations in quarries require improvement of the parameters of drilling and blasting operations. It was found that when using combined schemes for the distribution of borehole explosive charges with diameters from 135 and 203 mm in five to ten or more rows across the width of the blocks, a reduction in the yield of oversized by 15-20% was achieved. It was determined that the detonation of explosive borehole charges with an arrangement of 4(5)-14 rows according to diagonal and wedge detonation schemes with deceleration intervals of 500-925 ms helps to reduce the yield of oversized material by 12-20%. A number of dependences of the change in the mass of explosive charges on the number of rows, the yield of the oversized on the diameter of the wells, as well as the number of rows of borehole explosive charges have been established. In addition, it was determined that the developed designs of explosive charges with air gaps should be used to reduce the yield of explosives.

Key words: quarry rock crushed stone charge mass explosive deceleration intervals arrangement patterns charge detonation patterns diameter

Receiving date: 27.11.2025

Approval date: 15.05.2026

Publication date: 29.06.2026

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