Yielding anchor cable
A technology of anchor cable and cable body, which is applied in the installation of anchor rods, mining equipment, earthwork drilling and mining, etc. It can solve the problems of insufficient support force, difficult high and stable pressure support, small contact area, etc., to achieve increased support The effect of protection
Pending Publication Date: 2018-02-27
JIANGSU ZHENGXING MINING TECH DEV CO LTD
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Problems solved by technology
[0004] Although there are some yielding anchor cables for deep tunnels and high-strength mining at present, there are more or less deficiencies, for example: some inventions are all towards improving the elongation direction of the anchor cables and are difficult to consider the strength aspect; some inventions consider using The sleeve is installed on the cable body, and the friction between the constant resistance device and the sleeve is used to increase the support strength, but the support force generated by friction alone is slightly insufficient, and cannot resist the large deformation of the surrounding rock under the influence of dynamic pressure; The cutting tool is connected with the constant resistance sleeve, and the force generated during the cutting process of the constant resistance sleeve is used to resist the deformation of the surrounding rock. Although the support force has been improved, it is difficult to achieve high stability yield support due to the small contact area.
[0005] In summary, the prior art mainly has the problems of unstable support and low strength
Method used
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Embodiment
[0043] The present invention provides a pressure yielding anchor cable 200, which utilizes the mechanical device composed of the cable body sleeve 211, the snap ring 230 and the resistance stabilizing sleeve 220 designed by the present invention to realize the pressure yielding support function , It can be applied to the stability control of the roadway surrounding rock under 300 large deformation and dynamic pressure state, and has the performance of high stable resistance and large stroke yield pressure support.
[0044] Please refer to figure 1 and figure 2 , figure 1and figure 2 The specific structure of the yielding anchor cable 200 provided in the embodiment is shown.
[0045] from figure 1 and figure 2 As can be seen from the above, the pressure-relief anchor cable 200 includes a cable body 210 , a resistance stabilizing sleeve 220 and a retaining ring 230 .
[0046] Wherein, a section of cable casing 211 is fixed on the outer circumference of one end of the ca...
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The invention relates to the technical field of roadway support, in particular to a yielding anchor cable. The yielding anchor cable comprises a cable body, a steady-resistance casing pipe and a position clamping ring. The outer circumference of one end of the cable body is fixedly provided with a section of cable body casing pipe. The steady-resistance casing pipe is arranged at the exterior of the cable body in a sleeving mode. The steady-resistance casing pipe and a tray are machined into one. The position clamping ring is used for clamping the cable body casing pipe and the steady-resistance casing pipe. The yielding anchor cable device can provide high-steady-resistance and large-stroke yielding support for surrounding rock of a roadway, and is suitable for stability control and rockpressure bump disaster prevention and control of the surrounding rock of the large-deformation and dynamic-pressure roadway.
Description
technical field [0001] The invention relates to the technical field of roadway support, in particular, to a yielding anchor cable. Background technique [0002] Anchor cables are widely used in roadway support in mining engineering. The cable body is usually composed of multiple steel strands. Compared with bolt support, its support depth is larger and the support force is stronger. [0003] With the large-scale mining of coal resources and the continuous optimization of mining technology, high-strength mining and deep mining have developed rapidly. The traditional anchor cable support is often broken due to the small elongation of the anchor cable in the roadway with obvious dynamic pressure, severe deformation of the roadway, deep high ground stress, and large deformation of the surrounding rock under high-strength mining. Therefore, it is necessary to improve the traditional anchor cable to achieve the effect of both high-strength supporting force and large elongation....
Claims
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IPC IPC(8): E21D21/00
CPCE21D21/0033
Inventor 缪协兴
Owner JIANGSU ZHENGXING MINING TECH DEV CO LTD