Improvement of Open Cleaning-Up Schemes of Border Mineral Reserves

Moldabayev, Serik

doi:10.5593/sgem2019/1.3/s03.042

Cited by 11 publications

(8 citation statements)

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“…Unfortunately, the process of DSTU EN 529 development did not involve the expected protection coeffi cients for each RPE type; hence, there is a high risk of ineffi cient employee protection. Meanwhile, at many mining enterprises the problem of protection of respiratory organs from dust is very actual [6,7].…”

Section: Originality According To the Requirements Of Technicalmentioning

confidence: 99%

Determination of tightness of the filtering half-mask adhesion to a user’s face

ГОЛІНЬКО¹,

Pavlychenko²,

Cheberiachko³

et al. 2022

Nauk. visn. nat. hirn. univ.

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Purpose. To determine the correlation between adhesion tightness of filtering half-masks and anthropometric indices of employees faces. Methodology. To study tightness of the half-mask adhesion to a users face, a coefficient of NaCl aerosol test was determined in accordance with the requirements by DSTU EN 149:2017 (EN 149:2001+A1:2009, IDT). Volunteers took part in the testing selected in keeping with the parametric table divided into 12 settings along the face length and across its width. The tests were carried out using Respi and Standart respirators produced in lots by SPE Standart ltd. Findings. It has been identified that the tested filtering half-masks correspond to the standards by DSTU EN 149:2017 (EN 149:2001+A1:2009, IDT) and provide adequate protection of respiratory organs of users against harmful aerosols. It has been demonstrated that the required half-mask adhesion to a face depends upon the obturator design, half-mask geometry, and stretching force of a headband. It has been proved that employees with small faces require the instrumental verification of the preferred half-mask while selecting respiratory protective equipment. In turn, for users with large faces quality control is quite sufficient by means of any suitable method described by DSTU EN 529:2006 (EN 529:2005, IDT). Individuals with large faces have demonstrated the greatest values of the tightness coefficient of filtering half-mask adhesion. Originality. It is represented by the scientific substantiation of the tightness coefficient of filtering half-mask adhesion upon the length and width of users faces. Practical value. Mathematical expressions have been derived making it possible to calculate the tightness coefficient of the half-mask adhesion relying upon the face size. The abovementioned will help assess preliminarily protective characteristics of respirators without specific laboratory equipment.

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Section: Originality According To the Requirements Of Technicalmentioning

confidence: 99%

Determination of tightness of the filtering half-mask adhesion to a user’s face

ГОЛІНЬКО¹,

Pavlychenko²,

Cheberiachko³

et al. 2022

Nauk. visn. nat. hirn. univ.

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“…The development of deep open mines in Ukraine is accompanied by the placement of overburden rocks in external dumps. Issues of dump formation have been considered in various scientific papers [1][2][3][4][5][6][7][8]. The volume of the overburden rocks extraction of and their storage in the external dump directly depends on the productivity of the open mine where minerals are extracted [9][10][11][12][13][14][15][16][17].…”

Section: Analysis Of Studiesmentioning

confidence: 99%

Determination of economically viable option of liquidation the consequences of external dump deformation

et al. 2021

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The safety factors for different variants of operation development were obtained, on the basis of which the technical and economic indicators were established and the most expedient way of restoration of dump operations in conditions of the formed landslide was chosen. The solutions were proposed for the external dump No 2 of the Central Ore Mining and Processing Enterprise (COMPE), that allow to continue its future operation. When working in the conditions of the formed landslide, three variants of the further dump operation are modeled: the first one - with landslide removal and unloading of the upper dump horizons, the second one - without landslide removal and involvement of disturbed lands in land allotment, the third one - with the landslide loading. Based on the built sections of the dump and defined physical and mechanical properties, the stability factors were obtained for different options of the operation development, which made it possible to determine the appropriate option to eliminate the effects of the dump slide deformations. As a result of the calculations, the cost flows for each of the proposed options of the formation of the end contour of the dump No 2 are determined.

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“…Схемы развития фронта горных работ: 1 -контуры карьерного поля; 2 -направление перемещения фронта горных работ; 3 -разрезная траншея Следует отметить, что объем доработки верхних горизонтов значительно больший, чем нижний. В этой связи целесообразно использовать высокопроизводительный железнодорожный транспорт на верхних горизонтах [3]. В то же время постановка нижней бровки в проектное положение является важной задачей для возможности в кратчайшие сроки начать строительство капитального сооружения -перегрузочного пункта, оборудованного дробильной установкой [4].…”

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“…, м 3 (12) где: n 1 , n 2 , n b -количество транспортных берм, берм безопасности, уступов соответственно, распределенных по высоте борта Н; β 1 , β 2 -углы откоса прилегающих бортов карьера, град, lдлина перегрузочного пункта, м. При вскрытии глубинной зоны месторождения на 40 м без разноса борта, объем пород, подлежащий выемке составит 1,3 млн. м 3 , что почти в два раза меньше, чем при вскрытии с разносом борта карьера.…”

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Determination the scope of work and terms of commissioning elements of the cyclic-and-continuous technology complexes

Shustov¹,

Moldabayev²,

Adamchuk³

2019

Coll. res. pap. nat. min. univ.

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и обоснование рациональных схем вскрытия глубоких горизонтов карьера, ведущего разработку крутопадающих месторождений с применением комплексов цикличнопоточной технологии для условий эксплуатации Качарского железорудного карьера. Методика. Расчет эффективности схем вскрытия глубоких горизонтов карьера производится посредством разработанной методики определения погоризонтных объемов выемки горной массы, которая базируется на методе анализа графиков зависимости объема выемки горной массы от текущей глубины разработки месторождения полезного ископаемого открытым способом. Practical implication. According to the developed method for calculating the parameters of cyclicand-continuous technology complexes, the optimal location horizon of the loading point of the combined automobile and conveyor transport of the Kacharsky surface mine was established, taking into account the angle of inclination of the conveyor 18-23°. From the point of view of reducing the cost of transporting rock mass, it is recommended that a loading point be installed with through passage of trucks at a depth of 329 m.

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Improvement of Open Cleaning-Up Schemes of Border Mineral Reserves

Cited by 11 publications

References 0 publications

Determination of tightness of the filtering half-mask adhesion to a user’s face

Determination of tightness of the filtering half-mask adhesion to a user’s face

Determination of economically viable option of liquidation the consequences of external dump deformation

Determination the scope of work and terms of commissioning elements of the cyclic-and-continuous technology complexes

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