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Filling and mining trapezoidal lane-side support body and support method

A roadside support and support body technology, which is applied in the direction of filling, mining equipment, earthwork drilling and mining, etc., can solve the problems such as the stability and strength need to be strengthened, the lateral thrust is large, and the horizontal deformation of the roadside support body is large. To achieve the effect of increasing the recovery rate of coal resources, reducing deformation, and promoting sustainable green development

Active Publication Date: 2019-01-15
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0003] However, the cross-sections of the roadside support body studied before are all rectangular, and the lateral thrust of the filling area to the roadside support body is relatively large, resulting in large horizontal deformation of the roadside support body, and its stability and strength need to be strengthened

Method used

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  • Filling and mining trapezoidal lane-side support body and support method
  • Filling and mining trapezoidal lane-side support body and support method

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Embodiment Construction

[0024] The implementation of the present invention will be further described below in conjunction with a certain mining area:

[0025] like figure 1 As shown, a trapezoidal roadside support body for filling mining is characterized in that: the roadside support body 3 is a gangue wall arranged between the gob-side entry retention 2 and the goaf filling body 4, and the gangue The side of the wall is a right-angled trapezoidal structure. The gangue wall is formed by stacking gangue bags 12 filled with gangue. In the gangue bag 12, a plurality of double-ended threaded anchor rods 10 are arranged at intervals in the transverse direction. The metal mesh 11 is sprayed with a concrete layer 13 on the metal mesh 11 to ensure the strength and stability of the roadside support body 3. When the height of the roadside support body 3 is 2.73-4.37m, the ratio of its width to height is 1: 1. The angle between the oblique waist and the lower bottom is 75°-85°, and the length of the upper base...

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Abstract

The invention discloses a filling and mining trapezoidal lane-side support body which is characterized in that the cross section of the lane-side support body is a right angle trapezoid and gangue from coal mining or sorting is used as a material. The construction process for trapezoidal lane-side support body comprising: building a trapezoidal gangue wall, fixing anchors and metal meshes, and spraying the concrete layers. The trapezoidal lane-side support body can provide the active lateral support force on the oblique side while supporting the roof and closing the goaf. The method effectively weakens the lateral deformation of the side support body, the strength of the support body is large, the stability of the roadside support body is maintained, and the recovery rate of coal resourcesis improved. The construction process is simple, meets the requirements of safe construction and production of coal mine filling, effectively improves the strength and stability of the roadside support body, improves the coal resource recovery rate, consumes meteorite waste, protects the environment, and meets the requirements of green mining.

Description

technical field [0001] The invention relates to a roadside support body and a support method, in particular to a trapezoidal roadside support body and a support method for filling mining used in a coal-pillar-free gobside entry retaining face in comprehensive mechanized solid filling mining. Background technique [0002] In recent years, solid dense fill coal mining technology has been widely used. This technology uses gangue and other solid waste to replace the "three-down" pressed coal resources, achieving multiple goals such as improving resource recovery rate, large-scale treatment of solid waste, and protecting the ecological environment, and achieving the requirements of low ecological environment damage. Since the 1950s, gob-side entry retention technology has always been the key direction of my country's coal mining technology. With the development of solid dense filling technology, the construction technology of roadside support body for gob-side entry retention is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F15/00E21D21/00E21D20/00E21D11/15E21D11/10
CPCE21D11/10E21D11/152E21D20/00E21D21/0026E21F15/005
Inventor 李猛张吉雄齐文跃宋卫剑
Owner CHINA UNIV OF MINING & TECH
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