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Mining L type steel column shoe

A section steel and column shoe technology, applied in mining equipment, pillars/supports, earthwork drilling and mining, etc., can solve the problems of unguaranteed safety, pressure displacement of support components, instability of single hydraulic props, etc. The effect of strong side gangue blocking ability, reasonable supporting structure and avoiding a large number of overall failures in the empty area

Inactive Publication Date: 2019-12-17
LIAONING TECHNICAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in practical applications, the "disc-shaped" steel column shoe support components are often subjected to pressure from the side gangue, causing the support components to be displaced under pressure, making the single hydraulic prop unstable and unsafe. Guaranteed

Method used

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  • Mining L type steel column shoe
  • Mining L type steel column shoe
  • Mining L type steel column shoe

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Embodiment Construction

[0023] The specific implementation of the present invention will be described in detail below in conjunction with the accompanying drawings. As a part of this specification, the principles of the present invention will be described through examples. Other aspects, features and advantages of the present invention will become clear through the detailed description. In the referenced drawings, the same reference numerals are used for the same or similar components in different drawings.

[0024] Such as Figure 2-5 As shown, the L-shaped steel column shoe used in the coal mine underground roadway support provided by the present invention is a matching product of a single hydraulic prop and a ∏-shaped steel beam joint support, and is widely applicable to roadsides without dense single support along the side of the roadway. Cutting the top row of support in the empty retaining lane, the L-shaped steel column shoe of the present invention is mainly composed of a bottom steel plate 1...

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Abstract

The invention discloses a mining L type steel column shoe. The mining L type steel column shoe comprises a bottom steel plate, a side steel plate and a reinforcing rib steel plate; the bottom steel plate is provided with a cylindrical groove; a monomer hydraulic support column is put in the cylindrical groove to realize a shoe putting-on supporting form, and forms a whole support pressure-resistance buffering structure with the L type steel column shoe; channel steel extending in the vertical direction of the side steel plate is arranged in the middle position of the side steel plate for inserting in an II type steel beam and forming overall connection with the L type steel column shoe; and when a top plate is used for pressing, the pressure of the top plate is buffered by using redundantdisplacement in the connected place of the II type steel beam and the channel steel. The mining L type steel column shoe can be matched with a supporting module to effectively improve the surroundingrock deformation resistance of a gob-side entry retaining overall supporting structure, to reduce the gob-side entry retaining roadway rebuilding cost, to prolong the gob-side entry retaining servicelife, to prevent massive failure of gob-side entry retaining by a no-roadway side dense monomer supporting mode and to guarantee the gob-side entry retaining top plate management safety and reliability.

Description

technical field [0001] The invention belongs to the technical field of coal mining, in particular to a mining L-shaped steel column shoe. Background technique [0002] With the large-scale mining and utilization of coal resources, many mines are already facing resource depletion, and the method of retaining roadways along the gob (in order to recover the protective coal pillars left in the traditional mining method, certain technical means are used to remove the coal pillars in the previous section) Re-support along the gob is reserved for the next section. This method of retaining the entry is to keep the original entry along the edge of the goaf at the original position along the goaf, which is called entry along the gob.) The design of the mining face can recover coal resources to the maximum extent. . When coal mine adopts gob-side retaining operation, in order to ensure safety and orderly production, hydraulic props must be used as support between the upper and lower r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D15/44E21D15/55E21D15/50E21D15/502
CPCE21D15/44E21D15/50E21D15/502E21D15/55
Inventor 李刚杨庆贺尚斌张瑞龙
Owner LIAONING TECHNICAL UNIVERSITY
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