Shed cable collaborative anchor protection method and device for asymmetric deformation control of dynamic pressure semi-coal rock roadway
A deformation control, semi-coal and rock technology, which is applied in earthwork drilling, bolt installation, mining equipment, etc., can solve the problems of asymmetric large deformation control technology is not perfect, the control effect is not obvious enough, etc., to achieve a synergistic control effect , Improve the anchoring effect and the effect of firm connection
Active Publication Date: 2022-05-13
GUIZHOU UNIV
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Problems solved by technology
[0007] The problem to be solved by the present invention is to provide a shed-cable cooperative anchoring method and device for the asymmetric deformation control of the dynamic pressure semi-coal and rock roadway, so as to solve the shortcomings of the existing asymmetric large deformation control technology that is not perfect and the control effect is not obvious enough. The support system is optimized to make the semi-coal roadway and the support body coupled and bearable, and finally realize the effective control of asymmetric large deformation. The specific scheme is as follows:
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[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
[0038] Such as figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 10 As shown, a shed-cable collaborative anchoring method for asymmetric deformation control of a dynamic pressure semi-coal-rock roadway, including the following steps:
[0039] S101: Use the limit card cable 4 to build a U-shaped shed in the formed semi-coal and rock roadway, specifically: build a U-shaped steel bracket with a top beam 2 and two column feet 1, and then install the top beam 2 and the two columns. Install the first limit card cable 40, the second limit card cable 41, and the third limit card cable 42 at the upper, middle and lower positions ...
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The invention provides a shed and cable collaborative anchor protection method and device for asymmetric deformation control of a dynamic pressure semi-coal rock roadway. The shed and cable collaborative anchor protection method comprises the following steps that S101, a U-shaped shed is built in the formed semi-coal rock roadway through limiting clamping cables; s102, after the U-shaped shed is built, mixed concrete is used for conducting guniting and filling on the half coal rock roadway supported by the U-shaped shed through a slurry pump to form a behind-wall filling body, the U-shaped shed and the half coal rock roadway are fixedly connected through the formed behind-wall filling body, and then the coal rock interface position is positioned and marked on the half coal rock roadway subjected to guniting; s103, the marked coal and rock boundary position of the half coal and rock roadway is drilled; and S104, a layer-penetrating pre-stressed anchor cable penetrates into the drill hole in the coal-rock boundary position, and the coal-rock boundary position of the half coal-rock roadway is anchored. And the second lower web plate and the anchor cable are combined for anchoring, so that an integrated support of the anchor cable and the U-shaped shed is formed, and the anchoring effect can be improved.
Description
technical field [0001] The invention belongs to the field of semi-coal and rock roadway support, and in particular relates to a shed-cable cooperative anchoring method and device for dynamic pressure semi-coal and rock roadway asymmetric deformation control. Background technique [0002] The shear slip displacement deformation of the coal-rock interface and the expansion of the shear slip displacement deformation and deformation position difference of the upper and lower coal bodies caused by the stress concentration transfer during the mining disturbance coal pillar yield instability process are the effects of dynamic pressure. The main causes of asymmetric large deformation and failure of gob-side coal-rock roadway in down-sloping coal seam. For this type of roadway, the surrounding rock is soft and broken, and the traditional single support or the combined support with simple superimposed functions are no longer suitable for the deformation of the surrounding rock of this...
Claims
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IPC IPC(8): E21D20/00
CPCE21D20/003
Inventor 高林张盼栋颜岭刘鹏泽吴桂义孔德中马振乾康向涛
Owner GUIZHOU UNIV