A detection device and method for recoverable pressure dispersion anchor cable

Abstract

The embodiment of the present invention discloses a detection device and method for a recyclable pressure-dispersed anchor cable, wherein the device comprises: a dispersed anchor cable guide, which guides multiple anchor cables to be tested to pass through it; multiple jacks, which are placed vertically on the top of the dispersed anchor cable guide, and each anchor cable to be tested is individually locked with one anchor cable to be tested; a power assembly, which is connected to the jack, and the jack applies an upward pulling force to the anchor cable to be tested under the power of the power assembly; a displacement measuring mechanism, which is arranged at the part where the multiple anchor cables to be tested pass through the jack, so as to measure the displacement of the anchor cable to be tested under the upward pulling force of the jack. The present invention ensures the synchronization effect during detection, reduces the staff required for detection, reduces the overall testing cost, and ensures reasonable detection accuracy.

Description

Technical Field

[0001] The present invention relates to the field of anchor cable detection, and more specifically to a detection device and method for a recyclable pressure dispersion anchor cable. Background Art

[0002] Foundation pit support anchor cables are mainly used in the foundation pit support stage to ensure that the foundation pit has sufficient anchoring force to resist the active earth pressure on the foundation pit and prevent it from collapsing inwards.

[0003] Ordinary anchor cables mainly obtain their pull-out resistance through the bonding effect between the anchor cables and the grouting body in the anchoring section. However, the bonding stress distribution of ordinary anchor cables on the anchoring length is uneven, which easily leads to the concentration of bonding stress at the proximal end of the anchoring section, which is not conducive to the working effectiveness of the anchor cables. Once a certain anchor cable is damaged, it is very likely to cause the entire hole anchor cable to be damaged and fail. Moreover, once the ordinary anchor cable is constructed, even if the support period ends, the anchor cable is no longer effective but cannot be recovered, resulting in a certain waste of resources.

[0004] The working principle of the hot-melt recyclable pressure-dispersed anchor cable commonly used at present is to disperse the prestress to different depths of the rock and soil through multiple unbonded steel strands of different lengths and steel bearing bodies, forming a multi-segment anchor unit, avoiding the stress concentration phenomenon. Since the pressure-dispersed anchor cable adopts the principle of separate anchoring, even if one anchor cable in the same hole is damaged, the remaining units can still work normally. Another feature of this type of anchor cable is that after the support project is completed, according to the construction progress, the support anchor cable can be gradually connected to a 36V low-voltage power supply through the electric heating ring buried in the anchor head of the anchor cable through the pre-buried wire. After power is turned on, the electric heating ring on the anchor head heats the anchor head bushing to melt, achieving the effect of releasing the anchor. Then, a small recovery machine is used to clamp the anchor cable and pull it outward to pull out the anchor cable body, achieving the purpose of recovery. When constructing a subway in a city center, there will be obstacles from the existing building support anchor cables. At this time, the anchor cables are no longer in working condition, but they are still prestressed. They can be cut off during the construction of the shield machine. This process is dangerous and difficult to operate. In this case, the subway construction unit will generally file a claim against the construction unit of the original anchor cables. In summary, the use of recyclable pressure-dispersed anchor cables is safer in structure and can be recycled, which is especially suitable for areas in the city center where subway construction may occur in the future.

[0005] Since the recyclable pressure-dispersed anchor cable is a new type of anchor cable support technology, the existing inspection specifications only stipulate that the pressure-dispersed anchor cable should be inspected by tensioning the unit anchor rods in groups or by synchronous tensioning with parallel jacks, but the inspection specifications do not specify the inspection device for the pressure-dispersed anchor cable. When the group-by-group tensioning method is used for inspection, since the pressure-dispersed anchor cable generally adopts a structure of 2 or 3 groups of force-bearing units, this inspection method requires each anchor cable force-bearing unit to be inspected in turn, and its inspection time is 2 to 3 times or even longer than that of ordinary anchor cables, which is not conducive to the control of construction schedule. The method of synchronous tensioning inspection with parallel jacks is adopted, that is, the same number of jacks as the number of anchor cables are used to synchronously apply load to each anchor cable for inspection. This method can ensure that each anchor cable is subjected to the same load, avoiding the problem of uneven distribution of the jack load on each anchor cable when only one jack is used for inspection. The inspection time is basically the same as that of ordinary anchor cables, but this method still has the following problems:

[0006] 1. Parallel jack detection. If one jack corresponds to one pressurized oil pump, four oil pumps are required to detect the four-reinforcement anchor cable, and each oil pump needs to be equipped with an inspector. The number of personnel required is more than twice that of ordinary inspection, and it is difficult to ensure the consistency of the synchronous pressurization rate of different oil pumps, and it is difficult to achieve a completely synchronized effect.

[0007] 2. The anchor cables are close to each other when passing through the waist beam. When using parallel jacks for synchronous tensioning testing, they must be "dispersed" before lowering several jacks for testing. It is very important to separate the anchor cables reasonably to achieve a state that can be tested.

[0008] 3. During the inspection process, the displacement of the anchor cable changes with the loading of the jack. How can we accurately measure the change in displacement so as to correctly evaluate the quality of the anchor cable? Summary of the invention

[0009] The purpose of the present invention is to overcome the deficiencies of the prior art and to provide a detection device and method for a recoverable pressure-dispersed anchor cable.

[0010] To achieve the above object, the present invention adopts the following technical solutions:

[0011] In one aspect, a detection device for a recyclable pressure dispersive anchor cable comprises:

[0012] Dispersed anchor cable guide, guiding multiple anchor cables to be inspected to pass through it;

[0013] A plurality of jacks, wherein the plurality of jacks are vertically placed on the top of the dispersed anchor cable guide, and each anchor cable to be inspected is individually locked with one anchor cable to be inspected;

[0014] A power assembly, wherein the power assembly is connected to the jack, and the jack applies an upward pulling force to the anchor cable to be inspected under the power of the power assembly;

[0015] A displacement measuring mechanism is provided at the portion where a plurality of anchor cables to be inspected pass through the jack, so as to measure the displacement of the anchor cables to be inspected under the upward pulling force of the jack.

[0016] Its further technical solution is: the decentralized anchor cable guide includes a tail plate, a positioning plate, a support column and a guide tube; the support column is fixed between the tail plate and the positioning plate, the tail plate is provided with a tail plate through hole for the anchor cable to be inspected to pass through, the positioning plate is provided with a positioning plate through hole for the anchor cable to be inspected to pass through, one end of the guide tube is connected to the tail plate through hole, and the other end of the guide tube is connected to the positioning plate through hole.

[0017] A further technical solution is as follows: the cross-sectional area of ​​the dispersed anchor cable guide gradually decreases from the positioning plate to the tail plate.

[0018] A further technical solution is as follows: a locking protrusion is provided on the side of the locking plate that contacts the jack.

[0019] A further technical solution is as follows: the jack is cylindrical, the jack passes through a locking hole, and a locking plate for locking the anchor cable to be inspected is arranged in the locking hole.

[0020] Its further technical solution is: the power assembly includes an oil pressure sub-controller, a first oil pipe, a second oil pipe and an oil pump; the oil pressure sub-controller is connected to the oil pump through the first oil pipe, and the oil pressure sub-controller is connected to the jack through the second oil pipe.

[0021] Its further technical solution is: the oil pressure sub-controller is provided with an oil pressure input end and multiple oil pressure output ends; the oil pressure input end is connected to the oil pump through the first oil pipe; the multiple oil pressure output ends are respectively connected to a single jack through multiple second oil pipes.

[0022] Its further technical solution is: the displacement measuring mechanism includes a reference frame, a first magnetic base, a second magnetic base, a displacement sensor and a connecting rod; the first magnetic base is adsorbed on the reference frame, the second magnetic base is adsorbed on the anchor cable to be tested, the connecting rod is fixedly connected to the first magnetic base, the displacement sensor is fixed on the connecting rod, and a measuring pointer is provided on the displacement sensor, and the measuring pointer is aligned with the second magnetic base.

[0023] Its further technical solution is: the reference frame includes steel nails, steel plates and reference steel beams; the top of the steel nails is fixedly connected to the lower surface of the steel plates, and the bottom of the reference steel beam is fixedly connected to the upper surface of the steel plates.

[0024] In another aspect, a method for detecting a recyclable pressure dispersive anchor cable is provided, the method comprising:

[0025] Pass the anchor cable to be inspected through the dispersed anchor cable guide;

[0026] Place the jack on the decentralized anchor cable guide and connect the oil pressure sub-controller and oil pump;

[0027] Start the oil pump, and then close the oil pump after the jack locks the anchor cable to be inspected;

[0028] Fix the displacement measuring mechanism and make the second magnetic base on the displacement measuring mechanism adsorb on the anchor cable to be tested;

[0029] The oil pump is started again, and the displacement of the measuring pointer of the displacement sensor pushed by the second magnetic base is read to obtain the force displacement change data of the anchor cable to be tested.

[0030] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention guides the dispersion of multiple anchor cables to be inspected through the designed dispersed anchor cable guide, each anchor cable to be inspected is equipped with a jack, and multiple jacks are connected to an oil pump through a hydraulic sub-controller. The hydraulic sub-controller can realize synchronous pressurization of multiple jacks, thereby ensuring the synchronization effect during detection and reducing the number of staff required for detection.

[0031] The jack used can self-lock after pressurization during testing, and there is no need to install a locking plate separately. The anchor cable to be tested can be directly taken out after the pressure is released, which can avoid damage to the anchor cable to be tested. Moreover, the jack and oil pump can be purchased directly from the market at a low price, which reduces the overall testing cost.

[0032] The designed displacement measurement mechanism has a reasonable force distribution and is always in a static state during the detection process, which can effectively ensure the accuracy of the measured displacement change of the anchor cable to be tested and ensure the reasonable accuracy of the detection.

[0033] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying any creative work.

[0035] Figure 1It is a structural schematic diagram of a specific embodiment of a detection device for a recoverable pressure-dispersed anchor cable of the present invention;

[0036] Figure 2 It is a structural schematic diagram of a dispersed anchor cable guide in a specific embodiment of a detection device for a recoverable pressure dispersed anchor cable of the present invention;

[0037] Figure 3 It is a structural schematic diagram of a displacement measuring mechanism in a specific embodiment of a detection device for a recoverable pressure-dispersed anchor cable of the present invention;

[0038] Figure 4 It is a structural schematic diagram of a reference frame in a specific embodiment of a detection device for a recoverable pressure-dispersed anchor cable of the present invention;

[0039] Figure 5 It is a structural schematic diagram of an oil pressure sub-controller in a specific embodiment of a detection device for a recoverable pressure-dispersed anchor cable of the present invention.

[0040] Reference numerals

[0041] 1. Distributed anchor cable guide; 11. Tail plate; 12. Positioning plate; 121. Positioning protrusion; 122. Positioning plate through hole; 13. Support column; 14. Guide tube; 2. Power assembly; 21. Oil pump; 22. Oil pressure sub-controller; 221. Oil pressure input terminal; 222. Oil pressure output terminal; 223. Adjustment switch; 23. Second oil pipe; 24. First oil pipe; 25. Jack; 3. Displacement measuring mechanism; 31. Reference frame; 311. Steel nails; 312. Steel plate; 313. Reference steel beam; 32. First magnetic base; 33. Second magnetic base; 34. Connecting rod; 35. Displacement sensor; 100. Reinforced concrete waist beam; 200. Anchor cable to be inspected. DETAILED DESCRIPTION

[0042] The technical solution of the present invention will be clearly and completely described below in conjunction with the specific embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] It should be understood that when used in this specification and claims, the terms "include" and "comprises" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0044] It should also be understood that the terms used in this specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. As used in the specification of the present invention and the appended claims, unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" are intended to include plural forms.

[0045] It should be further understood that the term "and / or" used in the present description and the appended claims refers to any and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0046] The present invention provides a detection device for a recoverable pressure dispersion type anchor cable, which is mainly used for detecting the recoverable pressure dispersion type anchor cable. The present invention is described below through specific embodiments.

[0047] Please refer to Figure 1 A detection device for a recyclable pressure-dispersed anchor cable comprises: a dispersed anchor cable guide 1, which guides a plurality of anchor cables 200 to be inspected to pass through it; a plurality of jacks 25, which are vertically placed on the top of the dispersed anchor cable guide 1, and each jack 25 individually locks an anchor cable 200 to be inspected; a power assembly 2, which is connected to the jacks 25, and the jacks 25 apply an upward pulling force to the anchor cable 200 to be inspected under the power of the power assembly 2; a displacement measuring mechanism 3, which is arranged at the portion where the plurality of anchor cables 200 to be inspected pass through the jacks 25, so as to measure the displacement of the anchor cable 200 to be inspected under the upward pulling force of the jacks 25.

[0048] During the actual inspection process, multiple anchor cables 200 to be inspected are in a close proximity, so the dispersed anchor cable guide 1 is set up to disperse the multiple anchor cables 200 to be inspected, making it convenient to install the jack 25 for each anchor cable 200 to be inspected. The inner end of the anchor cable 200 to be inspected is fixed in the reinforced concrete waist beam (part of the support structure), providing a detection reaction force for the detection device during the inspection process.

[0049] For further information, please refer to Figure 2The decentralized anchor cable guide 1 includes a tail plate 11, a positioning plate 12, a support column 13 and a guide tube 14; in this embodiment, a plurality of support columns 13 are used to be fixed between the tail plate 11 and the positioning plate 12, and the support columns 13 mainly play a supporting role, which can not only provide sufficient detection reaction force during the detection process, but also have better stability. The tail plate 11 is provided with a tail plate through hole for the anchor cable 200 to be tested to pass through, and the positioning plate 12 is provided with a positioning plate through hole 122 for the anchor cable 200 to be tested to pass through. One end of the guide tube 14 is connected to the tail plate through hole, and the other end of the guide tube 14 is connected to the positioning plate through hole 122. In actual use, the anchor cable 200 to be inspected passes through the through hole of the tail plate, and passes through the guide tube 14 and out of the through hole 122 of the positioning plate. In order to achieve the effect of dispersing the multiple anchor cables 200 to be inspected, the cross-sectional area of ​​the dispersed anchor cable guide 1 from the positioning plate 12 to the tail plate 11 gradually decreases, that is, the whole presents a conical shape, so that the multiple anchor cables 200 to be inspected that were originally close together can be dispersed at a fixed angle. In addition, in order to facilitate the positioning of the jack 25 and avoid the problem of slipping or moving during detection, a positioning protrusion 121 is provided on the side of the positioning plate 12 that contacts the jack 25. The positioning protrusion 121 can clamp the bottom of the jack 25.

[0050] Preferably, the jack 25 is a front clamp type jack, which is narrowed at the front end. A locking plate is built into the front end of the jack 25. There is a hole inside the jack 25 that runs through the front and back. During testing, the anchor cable 200 to be tested is passed through the hole from the bottom and out from the top. After pressurization, the built-in locking plate is subjected to force to clamp and lock the anchor cable 200 to be tested.

[0051] For further information, please refer to Figure 1 , 5 The power assembly 2 includes an oil pressure sub-controller 22, a first oil pipe 24, a second oil pipe 23 and an oil pump 21; the oil pressure sub-controller 22 is connected to the oil pump 21 through the first oil pipe 24, and the oil pressure sub-controller 22 is connected to the jack 25 through the second oil pipe 23. The oil pressure sub-controller 22 is provided with an oil pressure input end 221 and a plurality of oil pressure output ends 222; the oil pressure input end 221 is connected to the oil pump 21 through the first oil pipe 24; and the plurality of oil pressure output ends 222 are respectively connected to a single jack 25 through a plurality of second oil pipes 23.

[0052] Specifically, the oil pressure sub-controller 22 is provided with an oil pressure output end 222 and an oil pressure input end 221 to evenly distribute the oil pressure output by the oil pump 21 to the jack 25. The oil pressure sub-controller 22 has two sub-controllers, one for oil inlet and one for oil return. The two sub-controllers are indistinguishable. When installed on the oil inlet pipe of the jack 25, it is an oil inlet sub-controller, and vice versa, it is an oil outlet sub-controller. The oil pressure sub-controller 22 is provided with an adjustment switch 223, and the number of output groups and the output oil pressure can be controlled by adjusting the switch 223. During the detection process, when the anchor cable 200 to be tested is locked with different tightness, this problem generally occurs because the adjustment switch 223 of the oil pressure sub-controller 22 is different in tightness. At this time, the adjustment switch 223 corresponding to the tighter anchor cable to be tested can be tightened, and then the oil pump 21 is started to pressurize. At this time, the pressure is only applied to the loosely locked anchor cable 200 to be tested, so that it can quickly reach the locked state to be tested. By designing the adjustment switch 223, it is possible to achieve synchronous pressurization of multiple jacks 25, thereby ensuring a synchronous effect during detection.

[0053] The jack 25 used can self-lock after the test pressurization, and there is no need to install a locking plate separately. The anchor cable 200 to be tested can be directly taken out after the pressure is released, which can avoid damage to the anchor cable 200 to be tested. Moreover, the jack 25 and the oil pump 21 can be purchased directly from the market at a low price, which reduces the overall testing cost.

[0054] For further information, please refer to Figure 3 , 4 The displacement measuring mechanism 3 includes a reference frame 31, a first magnetic table seat 32, a second magnetic table seat 33, a displacement sensor 35 and a connecting rod 34; the first magnetic table seat 32 is adsorbed on the reference frame 31, the second magnetic table seat 33 is adsorbed on the anchor cable 200 to be inspected, the connecting rod 34 is fixedly connected to the first magnetic table seat 32, the displacement sensor 35 is fixed on the connecting rod 34, and a measuring pointer is provided on the displacement sensor 35, and the measuring pointer is aligned with the second magnetic table seat 33. The reference frame 31 includes a steel nail 311, a steel plate 312 and a reference steel beam 313; the top of the steel nail 311 is fixedly connected to the lower surface of the steel plate 312, and the bottom of the reference steel beam 313 is fixedly connected to the upper surface of the steel plate 312.

[0055] Specifically, the reference frame 31 is a steel structure, and its main function is to provide a stable reference platform for measuring the displacement of the anchor cable 200 to be tested during the test. The steel nails 311 of the reference frame 31 can be driven into the soil to stabilize the reference frame 31, so that the reference frame 31 remains motionless during the test. The steel plate 312 of the reference frame 31 mainly assists in balancing and prevents the reference frame 31 from shaking left and right and affecting the test results. The reference steel beam 313 of the reference frame 31 serves as the adsorption object of the first magnetic table base 32. The reference frame 31 can ensure that the displacement sensor 35 is always in a static state during the test.

[0056] The designed displacement measuring mechanism 3 has a reasonable force distribution and is always in a static state during the detection process, which can effectively ensure the accuracy of the measured displacement change of the anchor cable 200 to be tested and ensure the reasonable accuracy of the detection.

[0057] The first magnetic base 32 is adsorbed on the reference frame 31, the second magnetic base 33 is adsorbed on the anchor cable 200 to be measured, and the displacement sensor 35 is fixed by the connecting rod 34 and set up in a displacement measurement state. When the anchor cable 200 to be inspected is inspected, the jack 25 loads an upward pulling force on the anchor cable 200 to be inspected. After the anchor cable 200 to be inspected is subjected to the force, it will be displaced outward relative to the foundation pit. The first magnetic base 32 and the second magnetic base 33 can be tightly adsorbed on the steel beam of the reference frame 31 and the anchor cable 200 to be inspected due to the principle of strong magnetism. The second magnetic base 33 can be displaced together with the anchor cable 200 to be inspected due to adsorption, but the displacement sensor 35 can keep it motionless under the action of the connecting rod 34 and the first magnetic base 32. The measuring pointer of the displacement sensor 35 is placed flat on the plane of the second magnetic base 33 adsorbed on the anchor cable 200 to be inspected. When the displacement of the anchor cable 200 to be inspected is transmitted to the second magnetic base 33 due to the detection, and then the measuring pointer of the displacement sensor 35 is pushed back, the force displacement change of the anchor cable 200 to be inspected can be accurately measured.

[0058] The present invention also provides a method for detecting a recyclable pressure-dispersed anchor cable, which uses the above-mentioned detection device for the recyclable pressure-dispersed anchor cable to perform detection. The specific method is as follows:

[0059] Step 1: Pass the anchor cable 200 to be inspected through the dispersed anchor cable guide 1;

[0060] Step 2: Place the jack 25 on the decentralized anchor cable guide 1, and connect the oil pressure sub-controller 22 and the oil pump 21;

[0061] Step 3: Start the oil pump 21, so that the jack 25 locks the anchor cable 200 to be inspected and then closes the oil pump 21;

[0062] Step 4: Fix the displacement measuring mechanism 3, and make the second magnetic base 33 on the displacement measuring mechanism 3 adsorb on the anchor cable 200 to be tested;

[0063] Step 5: Start the oil pump 21 again, and read the displacement of the measuring pointer of the displacement sensor 35 pushed by the second magnetic base 33 to obtain the force displacement change data of the anchor cable 200 to be tested.

[0064] Specifically, since multiple anchor cables 200 to be inspected are in a close proximity, a dispersed anchor cable guide 1 is required to disperse them. The jack 25 is placed on the dispersed anchor cable guide 1, and the oil pressure sub-controller 22 and the oil pump 21 are connected. At this time, the oil pump 21 should be turned on to pressurize the jack 25. Under the action of the oil pressure, the front built-in locking piece is pushed to self-lock and lock the anchor cable 200 to be inspected. In this process, the anchor cables 200 to be inspected may be locked at different tightnesses. This problem is generally caused by the different tightnesses of the adjustment switch 223 of the oil pressure sub-controller 22. The adjustment switch 223 corresponding to the tighter anchor cable 200 to be inspected can be tightened, and then the oil pump 21 is turned on to pressurize. At this time, the pressure is only applied to the loosely locked anchor cable 200 to be inspected, so that it can quickly reach the locked state to be inspected (it should be noted that the displacement of the anchor cable 200 to be inspected changes greatly during the adjustment process, and this displacement is not the required displacement data, so the displacement data before being locked is discarded and not measured). After that, the reference frame 31 is driven into the soil and fixed. After the displacement sensor 35 is installed, the zeroing key is pressed to return it to zero. At this time, the detection state is reached. Then the oil pump 21 is started to start recording the displacement data.

[0065] Due to the clever design of the entire structure, no multiple people are required to assist during testing, which saves manpower. In addition, the designed displacement measurement mechanism 3 has a reasonable force distribution and is always in a static state during the testing process, which can effectively ensure the accuracy of the measured displacement change of the anchor cable 200 to be tested, ensuring the reasonable accuracy of the detection.

[0066] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be based on the protection scope of the claims.

Claims

1. A detection device for a recyclable pressure-dispersed anchor cable, characterized in that: include: Dispersed anchor cable guide, guiding multiple anchor cables to be inspected to pass through it; A plurality of jacks, wherein the plurality of jacks are vertically placed on the top of the dispersed anchor cable guide, and each anchor cable to be inspected is individually locked with one anchor cable to be inspected; A power assembly, wherein the power assembly is connected to the jack, and the jack applies an upward pulling force to the anchor cable to be inspected under the power of the power assembly; A displacement measuring mechanism, the displacement measuring mechanism being arranged at the portion where the plurality of anchor cables to be inspected pass through the jack, so as to measure the displacement of the anchor cables to be inspected under the upward pulling force of the jack; The decentralized anchor cable guide comprises a tail plate, a positioning plate, a support column and a guide tube; the support column is fixed between the tail plate and the positioning plate, the tail plate is provided with a tail plate through hole for the anchor cable to be inspected to pass through, the positioning plate is provided with a positioning plate through hole for the anchor cable to be inspected to pass through, one end of the guide tube is connected to the tail plate through hole, and the other end of the guide tube is connected to the positioning plate through hole; the cross-sectional area of ​​the decentralized anchor cable guide gradually decreases from the positioning plate to the tail plate; the power assembly comprises an oil pressure sub-controller, a first oil pipe, a second oil pipe and an oil pump; The oil pressure sub-controller is connected to the oil pump through a first oil pipe, and the oil pressure sub-controller is connected to the jack through a second oil pipe; the displacement measuring mechanism includes a reference frame, a first magnetic table seat, a second magnetic table seat, a displacement sensor and a connecting rod; the first magnetic table seat is adsorbed on the reference frame, the second magnetic table seat is adsorbed on the anchor cable to be tested, the connecting rod is fixedly connected to the first magnetic table seat, the displacement sensor is fixed on the connecting rod, and a measuring pointer is provided on the displacement sensor, and the measuring pointer is aligned with the second magnetic table seat.

2. A detection device for a recoverable pressure-dispersed anchor cable according to claim 1, characterized in that: A locking protrusion is provided on a side of the locking plate that contacts the jack.

3. A detection device for a recoverable pressure-dispersed anchor cable according to claim 1, characterized in that: The jack is cylindrical and has a locking hole extending through it. A locking plate for locking the anchor cable to be inspected is arranged in the locking hole.

4. A detection device for a recoverable pressure-dispersed anchor cable according to claim 1, characterized in that: The oil pressure sub-controller is provided with an oil pressure input end and a plurality of oil pressure output ends; the oil pressure input end is connected to the oil pump through the first oil pipe; and the plurality of oil pressure output ends are respectively connected to a single jack through a plurality of the second oil pipes.

5. A detection device for a recoverable pressure-dispersed anchor cable according to claim 1, characterized in that: The reference frame includes steel nails, a steel plate and a reference steel beam; the top of the steel nail is fixedly connected to the lower surface of the steel plate, and the bottom of the reference steel beam is fixedly connected to the upper surface of the steel plate.

6. A detection method based on the detection device of the recoverable pressure dispersion anchor cable according to any one of claims 1 to 5, characterized in that: The method comprises: Pass the anchor cable to be inspected through the dispersed anchor cable guide; Place the jack on the decentralized anchor cable guide and connect the oil pressure sub-controller and oil pump; Start the oil pump, and then close the oil pump after the jack locks the anchor cable to be inspected; Fix the displacement measuring mechanism and make the second magnetic base on the displacement measuring mechanism adsorb on the anchor cable to be tested; The oil pump is started again, and the displacement of the measuring pointer of the displacement sensor pushed by the second magnetic base is read to obtain the force displacement change data of the anchor cable to be tested.

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