Technical and technological platforms for creating robotized complexes for the development of thick seam deposits

Nikitenko, M. S.; Kizilov, S. A.

doi:10.1088/1755-1315/377/1/012033

Cited by 2 publications

(1 citation statement)

References 1 publication

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“…In this case, it is necessary to analyze service properties of the roof support, to protect the props from overloading, to take into account the effective resistance of the hydraulic props within a production cycle and to generate equilibrium resistance through continuous and smooth adjustment, which mitigates the effect on the immediate roof rocks and improves adaptability of the powered roof support units to geological variations. All these factors elevate stability and efficiency of roof support but should be taken into account as early as the stage of design and engineering of the integrated platform, its kinematics and hydraulics toward creation of robotic heading and longwall systems [20].…”

Section: Introductionmentioning

confidence: 99%

Multifunction walking roof support for underground mining of stratified deposits and placers

Nikitenko¹,

Malakhov²,

Kizilov³

et al. 2020

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The article shows the urgency of technological advance in coal mining in difficult geological conditions and describes the application prospects for an integrated multi-function platform in underground mining of different minerals. The international practice of mobile roof support design and creation of a work environment in mines is reviewed. The authors propose an integrated multi-function platform as a walking roof support module which ensures safe and efficient mining in difficult geological conditions. Within R&D project supported by the Foundation for Assistance to Small Innovative Enterprises in Science and Technology, Project No. 2566GS1/41340, the kinematics of the platform is developed so that to ensure uniform loading of the walking support systems owing to constructional linkage between the support units, and to provide stability of the support system on a composite topography floor thanks to four couples of hinge supports with adjustability of height and position. Arrangement of structural elements is proposed, and their kinematic linkage is described. The walking support advance algorithm is developed in the form of a working cycle. Within R&D project supported by the Russian Foundation for Basic Research, Project No. 18-37-00356, the control operation algorithm and control automation circuit are developed for the walking roof support. The automated control is integrable in the standard electrohydraulic control system of mine roof supports. As a result, the walking roof support with the automated control can be considered as a framework (a platform solution) for the robotic system engineering for safe and efficient underground mining of stratified deposits and diamond placers. The study was supported by the Russian Foundation for Basic Research, Project No. 19-35-90075-19.

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Section: Introductionmentioning

confidence: 99%

Multifunction walking roof support for underground mining of stratified deposits and placers

Nikitenko¹,

Malakhov²,

Kizilov³

et al. 2020

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Measurement of feeder performance during coal discharge from an underroof seam using machine vision

Nikitenko

Kizilov

Zakharov

et al. 2022

Min.Sci.Technol. (RUS)

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The technology for extracting and discharging coal from an underroof seam uses the so-called gravitational extraction method in which coal is extracted and discharged from under the roof by gravity. Here, coal can be discharged onto the main conveyor (face conveyor, located in the supported area), central conveyor (rear conveyor in Western literature), and tail conveyor (discharge conveyor, located in the unsupported area). The most common facilities used currently are longwall sets of equipment providing discharge onto tail conveyors. The purpose of this study is to measure the performance of a motorised plate feeder supplying coal from the outlet port of a roof support to a conveyor during the extraction of thick seams with discharge onto the face conveyor. To achieve the goal, it is proposed to measure the coal volume using machine vision. Methods for calculating a unit volume in a measuring section using a three-dimensional model were investigated. Laboratory studies were carried out to estimate the relative errors of the methods. The research allowed properly defining: a method for collecting data to calculate the unit volume of coal; a method for calculating the unit volume in the measuring section; a method for calculating the feeder performance using machine vision, and approaches for physically simplifying the video scene examined by machine vision. A relative error of less than 10 % with the existing measurement accuracy for constructing a coal layer surface height map indicates the sufficiency of the proposed calculation method for engineering use. The developed mathematical apparatus for calculating the unit volume of coal at the measuring section and measuring the feeder performance allows creating algorithmic software using the elementary mathematical functions of addition, subtraction, multiplication, and division. This aspect is important because it lower sights for the software development environment, and therefore expands the range of hardware suitable for calculating the feeder performance.

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Technical and technological platforms for creating robotized complexes for the development of thick seam deposits

Cited by 2 publications

References 1 publication

Multifunction walking roof support for underground mining of stratified deposits and placers

Multifunction walking roof support for underground mining of stratified deposits and placers

Measurement of feeder performance during coal discharge from an underroof seam using machine vision

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