Circumferential pressure anchor pipe structure and manufacturing method
A technology of hoop and anchor pipe, which is applied in the direction of earth drilling, bolt installation, mining equipment, etc., can solve the problems of limited pressure yield, small yield effect, and limited shear resistance, etc., and achieve large elastic resistance and improved Shear strength, effect of improving shear performance
Active Publication Date: 2022-07-15
CHINA UNIV OF MINING & TECH (BEIJING)
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But at the same time, in the actual application process, the original slotted steel pipe only relies on the closure of the pipe seam to give way, which plays a small role in giving way, and the degree of giving way is limited, so the shear resistance effect on the anchor cable is also relatively small However, it is necessary to make further improvements from the consideration of the yield limit to prevent the surrounding rock from shearing and slipping to prevent the excessive shear force from causing the anchor cable to be broken, and to meet the stability of the layered surrounding rock roadway in a high-stress environment. control problem
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[0061] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention more clearly understood, the embodiments of the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but not to limit the present invention.
[0062]In the description of the present invention, it is to be understood that the terms "comprising / comprising", "consisting of" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a product, device, A process or method includes not only those elements, but may also include other elements, if desired, not expressly listed, or elements inherent to the product, device, process, or method. Without further limitation, an element defined by the phrases "comprising / comprising", "consisting of" d...
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The invention relates to a circumferential pressure yielding anchor pipe structure, which comprises: an outer layer of slitted steel pipe, which is provided with a longitudinally long pipe slit along the pipe wall; Pipe seam, the inner layer slit steel pipe is concentrically penetrated in the outer layer slit steel pipe, and the pipe seams of the inner and outer layer slit steel pipe are aligned; In the interlayer, it is fixed on the outer wall of the inner layer slotted steel pipe; in the use state, the inner layer slotted steel pipe is provided with anchor bars. The annular pressure-resisting anchor pipe structure provided by the invention has greater elastic resistance during deformation, can greatly improve the shear resistance of the surrounding rock of the roadway, and can make the allowable deformation of the surrounding rock laterally larger. , fully release the energy stored in the surrounding rock, and prevent the anchor cable from being pulled off unevenly due to excessive shear force.
Description
technical field [0001] The invention relates to a tunnel shear-resisting anchor pipe cable technology, in particular to an annular pressure-yielding anchor pipe structure and a manufacturing method, which can further improve the overall pressure-yielding shear resistance performance of the anchor pipe cable. Background technique [0002] Shear-resistant anchor pipe cable is a new type of mine roadway support technology. It can effectively resist the shear damage of the roadway surrounding rock to the anchor cable by installing a slotted steel pipe between the anchor cable and the borehole. [0003] The shear-resisting anchor-pipe cable has achieved good application in the construction site, and the application effect of the shear-resistance-anchor-pipe-cable has been verified through actual engineering and laboratory tests. The inventors have improved technology and patent achievements in many aspects. But at the same time, in the actual application process, the original sl...
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IPC IPC(8): E21D21/00B23P15/00
CPCE21D21/0026B23P15/00
Inventor 单仁亮韩天宇白瑶黄鹏程李兆龙仝潇
Owner CHINA UNIV OF MINING & TECH (BEIJING)