Abstract
An important task in the technological process of a mining enterprise is preparatory mine working performance, as effective operation of an entire mining complex depends on rate and quality of drilling. Therefore, the main factor affecting the performance of the process of underground mining is the correspondence of design and operating parameters of the working bodies of tunnelling machines to mining and geological conditions. The underground mining operations showed that rocks with a strength f ≤ 10 and high abrasiveness are to be destroyed with disc tools, providing higher strength, wear-resistant parameter and low dust formation in comparison with cutters. The usage of disk tools on the working bodies of tunnelling machines of selective action is a poorly studied task and requires special research of the questions of destruction, crushing and loading of rocks at reverse working modes. It has been established that researches aimed at design development of an attachment point of a disk tool for arrow-type working bodies of a tunnelling machines is an urgent scientific task. The original technical solutions for the design of the attachment points of disc and cutter tools are proposed to improve the processes of cutting of working bodies in the face massif, dust suppression, sealing and mounting-dismounting operations at the operation of shearers and tunnelling machines.
Highlights
IntroductionNumerous national [1,2,3,4,5,6,7] and foreign researches [8,9,10,11,12,13,14] as well as application experience of a disk tool for working bodies of shearers [4,5,6,7] and tunnelling machines [1,2,3, 8,9,10,11,12,13,14] show that it is perspective and, in some cases, competitive to the cutting tool application [15-19]
The analysis of the mining equipment development shows that there is no information about the combination of the processes of destruction, crushing of oversize material and loading of the destroyed rock mass with the implementation of operation reversible modes of the crowns for the working body of tunnelling machines of selective action with a disk tool in well-known scientific research and design developments
The basic design of two-crown arrow-type working body with a disc tool on trigonal prisms according to the Russian Federation patent No 2455486 can be recommended for installation for national and foreign tunnelling machines of selective action
Summary
Numerous national [1,2,3,4,5,6,7] and foreign researches [8,9,10,11,12,13,14] as well as application experience of a disk tool for working bodies of shearers [4,5,6,7] and tunnelling machines [1,2,3, 8,9,10,11,12,13,14] show that it is perspective and, in some cases, competitive to the cutting tool application [15-19]. Gorbachev Kuzbass State Technical University, the possibility and prospects of using a disk tool for the working bodies of shearers and tunnelling machines as well as drilling rigs are proved [20]
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