Authors: E.V. Ignatov

Title of the article: Dependences and Features of Displacements and For-mation of Fracture Zones of the Roof and the Edge of the Coal Seam in Interaction With the Elemental Base of Support at Pillarless Technology

Year: 2020, Issue: 4, Pages: 4-41

Branch of knowledge: 25.00.22 Geotechnology (underground, open and construction)

Index UDK: 622.272

DOI: 10.26730/2618-7434-2020-4-4-41

Abstract: The article reviews the results of field studies of spatial and temporal processes of interaction of the element base of the support with the rock massif, as well as analyzes its capabilities and disadvantages from the geomechanical point of view.
Mine studies of displacement and destruction of the rock massif, the coal seam and support of development workings were conducted at more than 30 mines in the North and Central Kuzbass. The total duration of these observations was more than 5 years, during this time there were made more than 20 000 single measurements.
All full-scale observations were carried out in accordance with approved methods and current safety rules.
To achieve the goal set in this work, we conducted observations of displacement and destruction of the roof rocks in the vicinity of development workings to identify spatial and temporal relationships, their parameters, the main influencing factors in the system "rock array – workings – broken rocks"; the changes in the coal seam to study the destruction of the edge of the coal massive; the interaction of shaft lining and cutting-off support, located on the border of "rock array – broken rocks" with lateral rocks to identify the features in the influence of various factors.

Key words: roof displacement rock disintegration cut-off support shaft lining

Receiving date: 18.11.2020

Publication date: 29.12.2020

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