Authors: A.A. Khoreshok, L.E. Mametyev, A.M. Tsekhin, A.Yu. Borisov

Title of the article: Improvement of technologies and equipment for underground mining and well drilling

Year: 2022, Issue: 6, Pages: 84-95

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

Index UDK: 622.232.83.054.52 + 622.233.05

DOI: 10.26730/1999-4125-2022-6-84-95

Abstract: The variants of designs of polyhedral prisms with attachment points of disk and tool tools for the executive bodies of shearers and tunneling combines have been developed, allowing to evaluate and select a design with a minimum stress-strain state for its further improvement and application. The design features of the device for boring in a two-crowned executive body with a disk tool allow for an increase in the efficiency of the drilling process and the pace of mining, since radial crowns can be located at different angles of inclination to the horizon, providing a choice of location during drilling and forming a minimum energy consumption when destroying the blocks in a coal seam using multipath parallel-axial drill bits. At the same time, the time for assembly and disassembly operations with the construction of multipath removable parallel-axial drill bits is reduced due to the small dimensions and useful area for their placement in the bottom-hole space. A number of innovative technical solutions about reverse flow reamers for drilling rising wells are presented, namely: improvement of the dust extinguishing system; simplification of installation and dismantling works; reduction of radial runout; improvement of discharge products and protection against gummimg of the attachment points of the disk tool. A technical solution is proposed to increase the drilling speed of horizontal and slightly inclined wells by the auger due to increasing the efficiency of positioning of hydraulic feed jacks when they are set to idle or working stroke.

Key words: sinking technology drilling technology tunneling combine disk tool prism drilling rig reamer drilling assembly spacer rod support-guide balancer nozzle irrigation well auger

Receiving date: 01.11.2022

Approval date: 16.12.2022

Publication date: 27.12.2022

CITE DOWNLOAD