Authors: K.A. Ananyev, A.A. Ermakov, M.S. Sidorov, Varnavsky

Title of the article: Overview of drilling rigs executive bodies

Year: 2022, Issue: 4, Pages: 35-61

Branch of knowledge: 2.8.8 Mining machines, geotechnology (engineering)

Index UDK: 622.24

DOI: 10.26730/2618-7434-2022-4-35-61

Abstract: Drilling connection holes in coal mines to remove methane from the worked-out space takes a long process (up to 5-7 days per hole). The hole is periodically destroyed before it is reinforced with casing. At the same time, the diameter of the cased connection hole well is 800 mm, which is not enough. As a consequence, the boreholes are drilled with smaller pitch, and it leads to increase of labor costs and total drilling time. Within the frames of the search for alternative variants of drilling such boreholes in order to reduce time, increase diameter and prevent their destruction a review of executing bodies of mining machines, which form workings with diameter of 1.2-1.5 m, was made. The review made it possible to determine the main features of the executive bodies, which can be used in the creation of new design solutions of mining machines for driving connection holes to remove methane from the worked-out space.

Key words: air connections drilling rigs executive body reamer

Receiving date: 02.10.2022

Approval date: 22.11.2022

Publication date: 27.12.2022

CITE DOWNLOAD