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Control method of asymmetric deformation of deep mine roadway surrounding rock

A technology of deep well roadway and control method, which is applied in tunnels, shaft linings, tunnel linings, etc., and can solve problems such as asymmetric deformation of roadways

Active Publication Date: 2015-01-07
SHANDONG UNIV OF SCI & TECH
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In view of the above-mentioned deficiencies, the present invention provides a method for controlling the asymmetric deformation of the surrounding rock of deep mine roadway. Asymmetric Deformation of Roadway in High Stress Field

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  • Control method of asymmetric deformation of deep mine roadway surrounding rock
  • Control method of asymmetric deformation of deep mine roadway surrounding rock
  • Control method of asymmetric deformation of deep mine roadway surrounding rock

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Embodiment Construction

[0023] The present invention provides a method for controlling the asymmetric deformation of surrounding rocks in deep well roadways. The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments, so as to make the purpose, technical scheme and effect of the present invention clearer and more definite.

[0024] Such as figure 2 As shown, the left side straight wall section 6 of the roadway, the left side of the bottom plate 7 and the right shoulder angle 8 are shown respectively. The deformation of the left and right sides of the symmetrical plane along the central axis of the roadway is uncoordinated, and the deformation of one side is often larger than that of the other side. Large, so that the roadway as a whole is deflected to one side, and at the same time, the deformation of some key parts such as shoulder angles is larger than that of other positions. This asymmetric deformation feature brings great...

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Abstract

The invention discloses a control method of asymmetric deformation of deep mine roadway surrounding rock and belongs to the technical field of coal mining roadway support. The control method comprises digging the cross section of the deep mine roadway surrounding rock into a round or arc shape and then clockwise and evenly dividing the cross section of the roadway into a plurality of zones; laying wire meshes around the surrounding rock, sequentially mounting anchor rods and anchor cables in the corresponding area of the cross section of the deep mine roadway and forming concrete coating through spraying to form an anchor-mesh-coating primary support structure; lastly, performing secondary support on the roadway surrounding rock of the primary support structure through a steel tube concrete support frame. According to the control method of the asymmetric deformation of the deep mine roadways surrounding rock, by means of the composite support method of combining the primary support with the secondary support and by adding high-prestress anchor rods in relatively large key zones and increasing the support density of the anchor cables and the wall thickness of the support frame, the support strength of a support body can be enhanced, and the asymmetric deformation of the deep mine roadway surrounding rock can be effectively controlled.

Description

technical field [0001] The invention belongs to the technical field of roadway support in coal mines, and in particular relates to a control method for asymmetric deformation of surrounding rocks in deep mine roadways. Background technique [0002] After the mine entered deep mining, the self-weight stress and structural stress of the surrounding rock further increased, and the superposition of the two stress fields made the deep stress environment more complicated. Rock deformation often shows obvious asymmetric deformation characteristics. The deformation of the left and right sides along the symmetrical plane of the central axis of the roadway is uncoordinated, and the deformation on one side is often larger than that on the other side, making the roadway as a whole deflected to one side, and at the same time, the deformation amount of some key parts such as shoulder angles is larger than that of other positions big, such as figure 2 As shown, this asymmetric deformatio...

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Application Information

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IPC IPC(8): E21D9/14E21D11/10E21D20/00
CPCE21D11/10E21D11/18E21D20/00
Inventor 黄万朋高琳王玮张磊
Owner SHANDONG UNIV OF SCI & TECH
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