2022
DOI: 10.25018/0236_1493_2022_6_0_46
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Adaptable and energy-efficient powered roof support unit

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Cited by 10 publications
(8 citation statements)
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“…[15] The section of the mechanized support with a telescopic base and overlap (Fig. 5) [7] consists of a visor -1, a bottom -hole overlap -2, a bottom -hole portal -3, bottom -hole hydraulic pillars -4, bottomhole portal -5, a console hinge -6, a landing overlap -7, landing hydraulic pillars -8, an enclosing shield -9, a landing base -10, a bottom-hole base -11, a base portal-12, a bottom-hole portal of the base -13, a guide beam -14, a bottom-hole conveyor -15, the hinge of the downhole hydraulic jack -17.…”
Section: Resultsmentioning
confidence: 99%
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“…[15] The section of the mechanized support with a telescopic base and overlap (Fig. 5) [7] consists of a visor -1, a bottom -hole overlap -2, a bottom -hole portal -3, bottom -hole hydraulic pillars -4, bottomhole portal -5, a console hinge -6, a landing overlap -7, landing hydraulic pillars -8, an enclosing shield -9, a landing base -10, a bottom-hole base -11, a base portal-12, a bottom-hole portal of the base -13, a guide beam -14, a bottom-hole conveyor -15, the hinge of the downhole hydraulic jack -17.…”
Section: Resultsmentioning
confidence: 99%
“…A section of mechanized support with a telescopic base and overlap. [7] There are sections with sliding sides on the overlap, and you can make the sides and on the base, and then the section can be controlled. Adaptability consists in mobility, adjustment of position, adjustment during each operation.…”
Section: Resultsmentioning
confidence: 99%
“…Some scholars believe that the essence of polyethylene pipeline cracks is the aging of materials or the complete result of external culture, humidity, and internal stress. The previous methods, such as ray and light diffraction, cannot be effectively detected (26,27). Some scholars believe that the previous testing methods for cracks in polyethylene pipes (28) have the problems of long testing time and complex testing process, which can not be continuously tested and affect the use of polyethylene pipes (29)(30)(31)(32).…”
Section: Introductionmentioning
confidence: 99%
“…The balance between potash extraction and potash fertiliser consumption requires an increase in the capacity of existing mining facilities [7], which involves mining offbalance reserves or working in more difficult mining and geological conditions [8]. In some cases, mining is carried out in underpopulated areas where increased attention is paid to surface preservation [9].…”
Section: Introductionmentioning
confidence: 99%