Authors: I.G. Katanov

Title of the article: Substantiation of rational composition of foaming gel for tamping of wells

Year: 2018, Issue: 3, Pages: 22-29

Branch of knowledge: Earth sciences

Index UDK: 622.232

DOI: 10.26730/1999-4125-2018-3-22-29

Abstract: The purpose of the discussed issue isIs to improve the performance of the mining and loading equipment for coal mines. The solution to this problem is possible due to the high-quality preparation of rock mass explo-sion. Changing the parameters of the explosive crushing of rock mass by the method of well charges, the use of various designs of well charges, methods of their placement in the array and blasting allow to achieve the necessary parameters of the degree of crushing, loosening and collapse. It is possible to control the quality of rock preparation for dredging due to the type of explosive, the design of the well charge, its spatial placement in the array, the sequence of explosion and deceleration, the number of rows of wells, the size and material of the bottom hole. The most promising way to improve the efficiency of blasting operations is the use of face-down on the basis of foams. If, after charging the well with explosives and installation of the explosive network, the space above the charge column is filled with a low – density composition-foam gel. This design allows to improve the quality of the tamping of the explosion products locking in the charging chamber of the well and thereby increase the efficiency of the explosion. It is necessary to ensure the economic efficiency of the process. Therefore, we consider the composition of foams with a rational ratio of components that provide a stable slaughtering at least the time of change. The main aim of the study consists in finding the most rational composition of foams, providing not only the conditions for high-quality preparation of rock mass by explosion, but also cost reduction in drilling and blasting operations. The methods used in the study include the analysis of methods to increase foam stability in time, physical modeling of the process of making foaming gels; technical and economic analysis using the cost parameters. The results consist in recommendations on the choice of the composition of foaming and gelling substances with the rational ratio of components.

Key words: excavator productivity drilling and blasting foam gel costs economic efficiency

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