Advance support structure for broken roof loose coal roadway
A technology of broken roof and advanced support, which is applied to roof beams, mining equipment, earthwork drilling and other directions for supporting mine roofs, can solve the problems of complex construction technology, reduced construction efficiency, and increased support costs, and achieves economical improvement. Benefit, prevent coal gangue from falling, and increase reliability
Inactive Publication Date: 2018-06-29
晋城煤炭规划设计院
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Problems solved by technology
These support methods often cannot completely eliminate potential safety hazards, and require multiple repairs, reducing construction efficiency, resulting in increased support costs, or complex construction techniques, etc.
Method used
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[0016] Such as figure 1 , figure 2 , image 3 As shown, the advanced support structure of the broken roof loose coal roadway of the present invention includes a steel shed support 1, and the steel shed support 1 is arranged in the roadway, and a plurality of pre-piercing steel bars 2 are arranged in the roadway roof, and the pre-piercing steel bars 2 are arranged along the roadway The forward direction is densely packed, the angle between the pre-piercing steel bars 2 and the roof is 10°, the steel shed support 1 top beam is laid with metal mesh 3, the diameter of the pre-piercing steel bars 2 is not less than 28mm, the length is not less than 3m, and the spacing is 200mm , The steel shed support 1 is No. 12 I-beam support, the metal mesh 3 is a diamond-shaped metal mesh, the mesh is 50mm×50mm, and the material is 10# iron wire.
[0017] When the present invention is in use, this structure is only adopted when the roof of the roadway is broken. The steel bars are made of st...
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Abstract
The invention discloses an advance support structure for a broken roof loose coal roadway, and belongs to the field of mine safety supports. The advance support for the broken roof loose coal roadwayis simple in structure, convenient to use, safe, reasonable, economical and practical. According to the technical scheme, the advance support structure for the broken roof loose coal roadway comprisesa steel shed support which is arranged in a roadway body; a plurality of pre-penetrating steel bars are arranged in a top plate of the roadway body and are arrayed densely in the advancing directionof the roadway; the angle between the pre-penetrating steel bars and the top plate is 10 degrees; and a metal mesh is paved on a top beam of the steel shed support to be used as an artificial roof. The advance support structure for the broken roof loose coal roadway can be widely applied to the field of mine safety supports.
Description
technical field [0001] The invention discloses an advanced support structure for a loose coal roadway with a broken roof, and belongs to the technical field of mine safety support. Background technique [0002] With the extension of coal mines to the deep, the geological conditions become more and more complex, and more and more attention has been paid to the problem of loose coal roadway support with broken roofs. Scholars have done a lot of research on the damage characteristics and deformation mechanism of this type of roadway, and proposed It is mainly a single support method, such as ultra-high-strength prestressed anchor rods and full anchor cables for loose coal roadways, prestressed anchor rods + anchor cable reinforcement, prestressed anchor rods + large-span scaffolding for broken roofs, etc. means. These support methods often cannot completely eliminate potential safety hazards, and require multiple repairs, reducing construction efficiency, resulting in increase...
Claims
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Login to View More IPC IPC(8): E21D17/00
CPCE21D17/00
Inventor 胡立年董天珍李万魁赵玉梅
Owner 晋城煤炭规划设计院