Determining stability conditions for haulage drifts protected by coal pillars

Iordanov, Igor; Novikova, Yuliia; Simonova, Yuliia; Korol, Anton; Podkopayev, Yevgen; Kayun, Oleksiy; Dovgal, Vitaliy; Boichenko, Hennadii; Hryhorets, Maksym

doi:10.15587/1729-4061.2020.216530

Cited by 5 publications

(4 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, much attention is paid to the development and improvement of technology, methods and means of protecting the development workings behind the working faces [6].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

See 1 more Smart Citation

Justification of the innovative design of the skip winch with a body moved by a counterweight gravity drive

Kaiym,

Chsherbinin,

Kaimov

et al. 2023

EEJET

View full text Add to dashboard Cite

The article has to grapple with the problem of creating an economically efficient and environmentally friendly technological process for a development of solid minerals in open-pit mining. In many mining countries of the world today, the depth of many open pits is already 400–600 m or more. At the same time, the cost of transporting 1 ton of rock mass when operating a quarry whose depth is 400 m is 65–70 % of the total cost of extracting 1 ton of minerals. The object of research is technical devices for transport of rock masses in the technological process of development of solid useful deposits in open pit mining. The main reasons are the need to construct transport routes for them by withdrawing the sections of the rock mass on above them, as well their lifting capacity is limited because of they all do use highly energy-intensive machines for transporting rock minerals. In article has been justified a skip cable winch supplied with a wheels moving along on a railroad way by using only a gravitational counterweight device for transporting rock mass from a place of their formation to Earth surface. There have been created a prototype of a planar skip winch with four cables for practical implement in open-pit mining. The theoretical and experimental investigations of the prototype have being confirmed its performance. The created skip winch will accomplish its performancing without using any energy machines even under adverse climate conditions. Its affected would allow to make an open-pit effectiveness to soar and environmentally do friendly because of there are all but excluded any transport vehicles whether on gasoline or diesel oil

show abstract

“…Therefore, much attention is paid to the development and improvement of technology, methods and means of protecting the development workings behind the working faces [6].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…However, the above-mentioned works [4][5][6] did not study the selection and justification of an innovative design of a technical device for transporting rock mass in quarries, the operation of which would ensure the extraction of a mineral by an open method with a minimum production cost of 1 ton of a mineral.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Justification of the innovative design of the skip winch with a body moved by a counterweight gravity drive

Kaiym,

Chsherbinin,

Kaimov

et al. 2023

EEJET

View full text Add to dashboard Cite

show abstract

“…All over the world, preparatory roadways behind walls are mostly protected in a massif and coal pillars [7]. Pillars are destroyed at high external loads and are unable to ensure the operational condition of roadways [8,9] and safe excavation conditions for miners [10,11]. There are also cases when leaving pillars to protect roadways is unacceptable because of significant losses of minerals [12][13][14] or the tendency of coal to self-ignite [15,16].…”

Section: Introductionmentioning

confidence: 99%

Determining the efficiency and parameters of rubble strip reinforcement

Nehrii

Surzhenko

Nehrii

et al. 2021

EEJET

View full text Add to dashboard Cite

The necessity of development and improvement of methods and means for the protection of preparatory roadways, in particular, protective structures, was proved on the basis of ordinary rock with binding surfaces. Analysis of the results of the study on the use of protective structures of ordinary rock and bounding surfaces was performed. It has shown the feasibility of reinforcing rock structures to ensure operational conditions for the protected roadways. Such structures include rubble strips reinforced with partitions made of metal mesh. To determine their efficiency and reinforcement parameters, studies were performed using provisions of structural mechanics, soil mechanics, and bulk media, as well as physical modeling using natural materials. According to the results obtained in the performed studies, the efficiency of reinforcement of rubble strips with a metal grid was proved and a procedure for calculation of reinforcement parameters that need to be considered in designing the above structures was developed. Such parameters include width and height of the strip, class of reinforcement, its diameter and tensile strength, size of the grid cells, angle of internal friction of rocks, and diameter of maximum rock pieces in the strip. It was established that reinforcement of the rubble strip by partitions made of metal meshes can reduce the width of the strip and volume of the rock fill by 1.33…2.66 times without losing the structure rigidity. To do this, the condition of reinforcement strength in grids must be met. It consists of comparing its tensile strength with maximum stresses in the partition. These stresses are determined by the magnitude of the load on the rubble strip from the roof rocks, the diameter of the reinforcement, and the maximum rock pieces, as well as relative extensional strain in reinforcement.

show abstract

“…In order to reduce the cost of carrying out work ings, as well as ensuring high loads on longwalls, special attention is paid to development systems with reuse of workings and efficient ventilation schemes for excavation areas [1][2][3]. Therefore, much attention is paid to the de velopment and improvement of technology, methods and means of protecting the development workings behind the working faces [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Improvement of technological processes for mining solid mineral resources

Novak¹,

Fesenko²,

Pavlov³

2021

TAPR

View full text Add to dashboard Cite

The object of research is the technological processes of the development of deposits and the extraction of solid minerals by underground and open-pit methods. The improvement of technological processes is achieved through the use of existing original technical solutions, which are currently advisable to use in practice. The work is aimed at increasing the efficiency of explosive energy use, improving the technological processes of mining operations in coal mines and open pits of mining enterprises. In the course of the study, an analysis of technical literature on mining topics was used, a search for copyright certificates for inventions and patents on the same topic was carried out. There was a search for innovative solutions that are expedient to apply at the present time. In the course of the analysis, the work shows ideas, methods of coal mining, systems for the development of coal seams, methods of destruction of rocks, microbiological reclamation and other new technologies and devices. The most promising technologies have been proposed for in-depth study, implementation and use in appropriate mining and geological conditions. The proposed technologies, for various reasons, have not yet found wide practical application at mining enterprises. Due to the application of the proposed technical solutions and technologies in practice in the conditions of existing coal mines and open pits, significant economic, environmental and financial effects can be obtained. This study was carried out in order to bring to a wide circle of specialists technical solutions that can contribute to a significant improvement in the technology of mining solid minerals, both in underground and open-pit mining all over the world.

show abstract

Determining stability conditions for haulage drifts protected by coal pillars

Cited by 5 publications

References 6 publications

Justification of the innovative design of the skip winch with a body moved by a counterweight gravity drive

Justification of the innovative design of the skip winch with a body moved by a counterweight gravity drive

Determining the efficiency and parameters of rubble strip reinforcement

Improvement of technological processes for mining solid mineral resources

Contact Info

Product

Resources

About