Adaptation of the mechanized roof support to changeable rock pressure

Buevich, V. V.; Gabov, V. V.; Задков, Д. А.; Vasilev, Yurii

doi:10.17580/em.2015.02.03

Cited by 15 publications

(13 citation statements)

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“…Eventually, when implementing strata pressure control, actuations of relief valve as well as dynamic impact on immediate roof due to these actuations will be avoided. In the work pressure range (controllable pressure) 'P ll -'P ul , in case of accelerated convergence of mine roof, the control arrangement [18,19], which switches a valve flow rate regulator with a comparison element, fluid converter and a back valve, ratably increases the work fluid flow rate from the head ends of legs to the pressure line of hydraulics of powered roof support [20]. An increase in the thrusting force is limited by an increase in the leg yield.…”

Section: Fig 1 Ideal Control Parameters For Performance Of Legs Of mentioning

confidence: 99%

Evaluation of structure and variables within performance rating of hydraulically powered roof support legs with smooth roof control

Gabov¹,

Задков²,

Stebnev³

2016

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Section: Fig 1 Ideal Control Parameters For Performance Of Legs Of mentioning

confidence: 99%

Evaluation of structure and variables within performance rating of hydraulically powered roof support legs with smooth roof control

Gabov¹,

Задков²,

Stebnev³

2016

Self Cite

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“…New requirements for MLFC have naturally occurred, in particular, it has become essential to provide them with adaptability to changing mining-geological conditions [23,24]. In this context, the power support [25][26][27] as the main functional equipment of the fullymechanized longwall (FML), which provides the necessary conditions for the intensive and safe operation of the working complex in the process of coal mining, plays an essential role in MLFC general adaptation to operating conditions.…”

Section: Introductionmentioning

confidence: 99%

“…• insufficient kinematic and contact adaptability of PSU to MGC that change as blocks are mined [25,26], results in uncontrolled support unit loads and stresses of roof rock in contact with the unit laps.…”

Section: Introductionmentioning

confidence: 99%

Nonimpact rock pressure regulation with energy recovery into the hydraulic system of the longwall powered support

Gabov¹,

Задков²,

Babyr³

et al. 2021

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“…Such conditions include, for instance, adaptation to varying geology, or stabilization of rocks given sudden loss of contact with roof or floor. In particular, real-time pressure adjustment in pistons of hydraulic props under static change in the load on the props [18]. The proposed adaptation technique improves stability of coal mining process, enhances safety of coal cutting and protects the support for overloads.…”

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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Adaptation of the mechanized roof support to changeable rock pressure

Cited by 15 publications

References 0 publications

Evaluation of structure and variables within performance rating of hydraulically powered roof support legs with smooth roof control

Evaluation of structure and variables within performance rating of hydraulically powered roof support legs with smooth roof control

Nonimpact rock pressure regulation with energy recovery into the hydraulic system of the longwall powered support

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

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