Stop anchor and fault displacement measuring and calculating device
By designing a hydraulic control system for the anchor, the problem of difficult equipment removal was solved, and automated anchoring and de-anchoring were achieved, reducing the cost of measurement and testing.
Patent Information
- Application Number
- CN202511305694.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-12
- Publication Date
- 2025-11-21
AI Technical Summary
In existing technologies, the low flexibility of the anchoring device after the equipment has penetrated deep underground makes it difficult to remove, which increases the cost of measurement and testing.
Design a stop anchor comprising a first hydraulic channel, a stop element, a switching valve, and a locking assembly. By hydraulically controlling the extension and retraction of the stop element, automatic anchoring and de-anchoring are achieved, simplifying the equipment removal process.
The automated anchoring and deanchoring process reduces the difficulty and cost of removing equipment and improves the efficiency of measurement and detection.
Smart Images
Figure CN120990516A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of geological measurement, in particular to a stop anchor and a fault displacement measurement device. BACKGROUND
[0002] In the prior art, when geological detection or measurement is performed, the device is deeply inserted into the ground for operation. In order to ensure the stability of the device, an anchoring device needs to be provided. However, after the device is used, since the device is deeply inserted into the ground, the anchoring device has low flexibility, and the device is prone to be stuck. Generally, the anchoring device needs to be damaged to take out the device, or more effort and energy are needed to take out the device, which greatly increases the cost of measurement and detection. SUMMARY
[0003] The technical problem solved by the present application is how to improve the technical problem of increased measurement and detection cost caused by the need to spend a lot of effort and energy to take out the device in the prior art.
[0004] The embodiment of the present application can be implemented as follows: The present application provides a stop anchor, comprising: a main body provided with a first hydraulic channel and a second hydraulic channel, the first hydraulic channel and the second hydraulic channel being communicated; the first hydraulic channel forms an outlet on the outside of the main body in the radial direction; a stopper movably arranged in the first hydraulic channel and used to extend out of the outlet to achieve anchoring when under pressure, and used to retract into the first hydraulic channel to release anchoring when losing pressure; a switch valve movably arranged in the second hydraulic channel and blocking the first hydraulic channel; the switch valve is also used to move along the second hydraulic channel to open the first hydraulic channel when the pressure reaches a first preset pressure; a locking assembly movably arranged inside the main body and abutting against the switch valve; when the switch valve opens the first hydraulic channel, the switch valve is also used to avoid the locking assembly extending into the second hydraulic channel to lock the switch valve.
[0005] The beneficial effects of the stop anchor provided by the present application relative to the prior art include: In the stop anchor, hydraulic fluid is introduced from the second hydraulic channel when anchoring is performed, the first hydraulic channel and the second hydraulic channel are communicated when the pressure of the switch valve reaches the first preset pressure, the stopper is pressed, and the stopper extends out of the outlet to achieve anchoring. At the same time, when the switch valve opens the first hydraulic channel, the locking assembly extends into the second hydraulic channel to lock the switch valve in the state of opening the first hydraulic channel. Even if the pressure is removed, the pressure valve remains in the state of opening the first hydraulic channel, the hydraulic fluid flows back under the action of pressure, the stopper is pressure relieved, and the stopper automatically retracts into the first hydraulic channel, that is, the main body, to achieve the purpose of releasing anchoring. After the stopper releases anchoring, the operator can easily take out the equipment using the stop anchor, and the technical problem of increasing the cost of measurement and detection caused by the large amount of labor and energy required to take out the equipment in the prior art is improved.
[0006] Optionally, the locking assembly comprises a first elastic member and a locking member; the locking member is movably connected to the main body and abuts against the switch valve; and the first elastic member is connected to the locking member and is used to drive the locking member to extend into the second hydraulic channel to lock the switch valve when the switch valve avoids the locking member.
[0007] Optionally, an active channel is formed in the main body, the active channel communicates with the second hydraulic channel; the locking member and the first elastic member are arranged in the active channel, one end of the locking member extends from the active channel to abut against the switch valve, and the first elastic member abuts against the other end of the locking member.
[0008] Optionally, the active channel comprises a first active section and a second active section, the first active section communicates with the second hydraulic channel, the second active section is arranged at one end of the first active section away from the second hydraulic channel, and the inner diameter of the second active section is greater than that of the first active section; the locking member comprises a locking portion and a limiting portion, the diameter of the limiting portion is greater than the inner diameter of the locking portion; the locking portion is arranged in the first active section, and the limiting portion is arranged in the second active section; and the first elastic member is arranged in the second active section and abuts against the limiting portion.
[0009] Optionally, the end of the limiting portion for locking the switch valve is wedge-shaped, and the slope of the end of the locking portion is located on the side of the end of the locking portion away from the switch valve when the locking portion locks the switch valve.
[0010] Optionally, the active channel is open at the outer periphery of the main body in the radial direction, the locking assembly further comprises a plugging member, the plugging member is plugged at the opening, and the end of the first elastic member away from the locking member abuts against the plugging member.
[0011] Optionally, a communication channel is further formed in the main body, the first hydraulic channel communicates with the communication channel, the communication channel communicates with the second hydraulic channel from a radial side of the second hydraulic channel, and the switch valve blocks the communication channel and moves along the second hydraulic channel to avoid the communication channel to open the communication channel when the pressure reaches the first preset pressure.
[0012] Optionally, the first hydraulic channel comprises an annular channel and a plurality of cavities, the annular channel is arranged inside the main body, and the annular channel communicates with the second hydraulic channel, the plurality of cavities are distributed along the circumferential direction of the main body, and the outlet is formed at the outer periphery of the main body in the radial direction, and a plurality of stop members are arranged in the plurality of cavities one by one.
[0013] Optionally, the first hydraulic channel further comprises a plurality of through holes, the plurality of through holes are distributed at the bottom of the annular channel, and the plurality of through holes respectively communicate with the plurality of cavities.
[0014] A fault displacement measuring device comprises a packer, a measuring main body, and the stop anchor described above, the packer, the stop anchor, and the measuring main body are arranged in sequence, the packer is provided with a hydraulic cavity, the hydraulic cavity communicates with the second hydraulic channel, and the hydraulic cavity is used to be in conduction with the second hydraulic channel when the internal hydraulic pressure reaches the second preset pressure, and the measuring main body is used to perform fault displacement measurement.
[0015] The fault displacement measuring device provided by the application adopts the stop anchor described above, and has the same beneficial effects as the stop anchor described above relative to the prior art, which will not be described here.
[0016] Further, since the hydraulic cavity of the packer communicates with the second hydraulic channel, the packer and the stop anchor adopt the same hydraulic passage to realize control, after the packer completes sealing, anchoring of the stop anchor can be directly performed, thereby saving operation steps, reducing operation difficulty, and improving efficiency. BRIEF DESCRIPTION OF DRAWINGS
[0017] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and therefore should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.
[0018] Figure 1 It is a structural schematic view of the stop anchor provided in the embodiments of the application from the first perspective. Figure 2 A second perspective structural schematic view of the stop anchor provided in the embodiments of the present application; Figure 3 A second perspective structural schematic view of the stop anchor provided in the embodiments of the present application; Figure 2 A cross-sectional schematic view at the position A in the embodiments of the present application; Figure 4 A cross-sectional schematic view at the position B in the embodiments of the present application. Figure 2 A cross-sectional schematic view at the position B in the embodiments of the present application.
[0019] Icon: stop anchor 10, main body 100, first hydraulic channel 110, annular channel 111, cavity 112, through hole 113, second hydraulic channel 120, movable channel 130, first movable section 131, second movable section 132, communication channel 140, stop piece 200, columnar structure 210, second elastic piece 220, switch valve 300, locking assembly 400, locking piece 410, locking part 411, limiting part 412, first elastic piece 420, plugging piece 430. DETAILED DESCRIPTION
[0020] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.
[0021] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.
[0022] It should be noted that: similar reference numbers and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0023] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.
[0024] In addition, if the terms "first", "second" and the like are used herein, they are merely used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0025] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.
[0026] Please refer to Figures 1 to 4 The fault displacement measuring device can be used for geological measurement, for example, detecting and measuring fault displacement. The stop anchor 10 is used to anchor and fix the fault displacement measuring device on the ground, ensuring the stability of the fault displacement measuring device during operation. In addition, the stop anchor 10 provided in the embodiment can improve the technical problem of increased measurement and detection cost caused by the need to spend a lot of effort and energy to remove the device in the prior art.
[0027] The stop anchor 10 comprises a main body 100, a stop piece 200, a switch valve 300 and a locking assembly 400. The main body 100 is provided with a first hydraulic passage 110 and a second hydraulic passage 120, and the first hydraulic passage 110 and the second hydraulic passage 120 are communicated. The first hydraulic passage 110 forms an outlet on the outer side of the main body 100 in the radial direction. The stop piece 200 is movably arranged in the first hydraulic passage 110, and is used to extend from the outlet to realize anchoring when under pressure, and is used to retract into the first hydraulic passage 110 to release anchoring when the pressure is lost. The switch valve 300 is movably arranged in the second hydraulic passage 120, and blocks the first hydraulic passage 110. The switch valve 300 is also used to move along the second hydraulic passage 120 to open the first hydraulic passage 110 when the pressure reaches a first preset pressure. The locking assembly 400 is movably arranged inside the main body 100, and abuts against the switch valve 300. When the switch valve 300 opens the first hydraulic passage 110, the switch valve 300 is also used to avoid the locking assembly 400 extending into the second hydraulic passage 120 to lock the switch valve 300.
[0028] The second hydraulic channel 120 can be used to introduce hydraulic fluid. When the first hydraulic channel 110 and the second hydraulic channel 120 are connected, the hydraulic fluid can be introduced into the first hydraulic channel 110, the stopper 200 is extended under pressure, and anchoring is achieved. When the pressure in the second hydraulic channel 120 is lost, the pressure in the first hydraulic channel 110 is also lost, the stopper 200 is retracted, and anchoring is released. When the second hydraulic channel 120 introduces hydraulic fluid, the switch valve 300 opens the first hydraulic channel 110 when the pressure reaches the first preset pressure, and the first hydraulic channel 110 and the second hydraulic channel 120 are connected. At the same time, when the switch valve 300 connects the first hydraulic channel 110 and the second hydraulic channel 120, the locking assembly 400 extends into the second hydraulic channel 120, locks the switch valve 300, and keeps the switch valve 300 in the state of connecting the first hydraulic channel 110 and the second hydraulic channel 120.
[0029] As described above, when anchoring is performed, hydraulic fluid is introduced from the second hydraulic channel 120, the first hydraulic channel 110 and the second hydraulic channel 120 are connected when the pressure of the switch valve 300 reaches the first preset pressure, the stopper 200 is pressed, the stopper 200 is extended to the outlet, and anchoring is achieved. At the same time, when the switch valve 300 opens the first hydraulic channel 110, the locking assembly 400 extends into the second hydraulic channel 120 to lock the switch valve 300 in the state of opening the first hydraulic channel 110. Even if the pressure is removed, the pressure valve remains in the state of opening the first hydraulic channel 110, the hydraulic fluid flows back under the action of pressure, the pressure of the stopper 200 is lost, and the stopper 200 is automatically retracted into the main body 100, i.e., the main body 100, and anchoring is released. After the stopper 200 is released, the operator can easily remove the equipment using the stop anchor 10, and the technical problem of increased measurement and detection cost caused by the need to use a lot of effort and energy to remove the equipment in the prior art is solved.
[0030] In the embodiment, the stopper 200 comprises a columnar structure 210 and a second elastic member 220. The columnar structure 210 is movably arranged inside the first hydraulic channel 110 and can move in the first hydraulic channel 110 to achieve the purposes of extension and retraction. When the columnar structure 210 is extended, it can be anchored and fixed by abutting against the inner wall of the borehole. When the columnar structure 210 is retracted inside the first hydraulic channel 110, the anchoring is released. The second elastic member 220 is arranged at one end of the columnar structure 210 inside the first hydraulic channel 110. When hydraulic fluid is introduced into the first hydraulic channel 110, the columnar structure 210 is extended under pressure and the second elastic member 220 is elastically deformed at the same time. When the pressure in the first hydraulic channel 110 is lost, the second elastic member 220 can retract the columnar structure 210 by its elastic action.
[0031] It should be understood that in other embodiments, the stopper 200 can also be arranged in other ways. For example, the stopper 200 can be arranged as an inflatable structure. When the first hydraulic channel 110 is pressurized, the pressure makes the stopper 200 expand outwardly and extend to abut against the inner wall of the borehole to achieve anchoring. When the pressure in the first hydraulic channel 110 is lost, the stopper 200 retracts to release the anchoring.
[0032] In the embodiment, the locking assembly 400 comprises a first elastic member 420 and a locking member 410. The locking member 410 is movably connected to the main body 100 and abuts against the on-off valve 300. The first elastic member 420 is connected to the locking member 410 and is used to drive the locking member 410 to extend into the second hydraulic channel 120 to lock the on-off valve 300 when the on-off valve 300 avoids the locking member 410. It is worth noting that when the locking member 410 abuts against the on-off valve 300, the first elastic member 420 remains in a compressed state, i.e., the first elastic member 420 is in a state of storing elastic potential energy. When the on-off valve 300 is pressurized to move and avoid the locking member 410, the first elastic member 420 can drive the locking member 410 to extend into the second hydraulic channel 120 under the elastic action to lock the on-off valve 300. The locking member 410 locks the on-off valve 300 by extending into the second hydraulic channel 120 to limit the path of the on-off valve 300 to move back to position, thereby locking the on-off valve 300. After the stopper anchor 10 is removed with the fault displacement measuring device, the locking member 410 can be withdrawn from the second hydraulic channel 120 to avoid the on-off valve 300, so that the on-off valve 300 can move back to position to close the first hydraulic channel 110, thereby allowing the stopper anchor 10 to be used again.
[0033] The first elastic member 420 is arranged to keep the locking member 410 in abutment with the switch valve 300, and to quickly complete the locking of the switch valve 300 when the switch valve 300 opens the first hydraulic passage 110. Thus, the switch valve 300 can be quickly and stably locked, and the hydraulic fluid can be smoothly returned when the introduction pressure is removed, and the anchoring of the stop anchor 10 can be stably released.
[0034] Optionally, the body 100 is internally provided with a movable passage 130, which is in communication with the second hydraulic passage 120; the locking member 410 and the first elastic member 420 are arranged in the movable passage 130, one end of the locking member 410 extends from the movable passage 130 to abut against the switch valve 300, and the first elastic member 420 abuts against the other end of the locking member 410. The movable passage 130 is arranged to provide a movement path for the locking member 410, and to provide a guiding and orienting effect; the locking member 410 can be stably extended to a specified position in the second hydraulic passage 120 under the action of the first elastic member 420, and the switch valve 300 can be locked.
[0035] Further, the movable passage 130 comprises a first movable section 131 and a second movable section 132, the first movable section 131 is in communication with the second hydraulic passage 120, the second movable section 132 is arranged at one end of the first movable section 131 away from the second hydraulic passage 120, and the inner diameter of the second movable section 132 is greater than that of the first movable section 131; the locking member 410 comprises a locking portion 411 and a limiting portion 412, the diameter of the limiting portion 412 is greater than the inner diameter of the locking portion 411; the locking portion 411 is arranged in the first movable section 131, and the limiting portion 412 is arranged in the second movable section 132; the first elastic member 420 is arranged in the second movable section 132 and abuts against the limiting portion 412. When the switch valve 300 avoids the locking portion 411, the first elastic member 420 acts on the limiting portion 412, thereby pushing the limiting portion 412 and the locking portion 411 to move, the diameter of the limiting portion 412 is greater than the inner diameter of the first movable section 131, so that the limiting portion 412 can only move to the end of the first movable section 131, thereby achieving limiting, which can prevent the locking member 410 from falling into the second hydraulic passage 120, and can also prevent the first elastic member 420 from being separated from the limiting portion 412 to cause damage.
[0036] Optionally, in the embodiment, the locking portion 411 is wedge-shaped, and when the locking portion 411 locks the switch valve 300, the slope of the end of the locking portion 411 is located on the side of the limiting portion 412 away from the switch valve 300. The wedge-shaped end of the locking portion 411 can facilitate the locking portion 411 to be installed in the first movable section 131, and can also facilitate the locking member 410 to exit the second hydraulic passage 120 by applying a force to the slope of the wedge-shaped structure.
[0037] It should be understood that the wedge-shaped structure can also be omitted in other embodiments.
[0038] In addition, in the embodiment, the movable passage 130 is open at the outer periphery of the main body 100 in the radial direction, and the locking assembly further comprises a blocking member 430, which is blocked at the opening, and the end of the first elastic member 420 away from the locking member abuts against the blocking member 430. It should be noted that in the embodiment, the blocking member 430 is installed in the opening in a removable manner. In other words, the locking member 410 and the first elastic member 420 can be installed in the movable passage 130 from the opening, and then blocked by the blocking member 430, at this time, the blocking member 430 can serve as a support structure for the first elastic member 420. In addition, when it is necessary to remove the locking member 410 from the second hydraulic passage 120, the locking member 410 can also be removed from the inside by removing the blocking member 430.
[0039] Optionally, the blocking member 430 can be installed in the opening in a threaded manner, and of course, the blocking member 430 can also be assembled in a flexible structure.
[0040] Further, in order to improve the stability of the locking switch valve 300, the movable passages 130 are arranged on opposite sides of the second hydraulic passage 120, and the locking members 410 and the first elastic members 420 are arranged in the two movable passages 130. That is, the locking of the switch valve 300 can be realized by the two locking members 410 extending into the second hydraulic passage 120, so as to facilitate the locking stability of the switch valve 300, and on the other hand, the two locking members 410 can also bear the thrust of the switch valve 300, thereby improving the service life of the locking member 410.
[0041] In the embodiment, the main body 100 is further provided with a communication passage 140, the first hydraulic passage 110 communicates with the communication passage 140, the communication passage 140 communicates with the second hydraulic passage 120 from the side of the second hydraulic passage 120 in the radial direction, the switch valve 300 blocks the communication passage 140, and is arranged to move along the second hydraulic passage 120 to avoid the communication passage 140 to open the communication passage 140 when the pressure reaches the first preset pressure.
[0042] In the case where the height of the communication passage 140 and the movable passage 130 is the same in the axial direction of the second hydraulic passage 120, in other words, in the case where the communication passage 140 is opened by the on-off valve 300, the movable passage 130 is avoided, and the locking member 410 is extended into the second hydraulic passage 120 to lock the on-off valve 300.
[0043] In the embodiment, the first hydraulic passage 110 includes an annular passage 111 and a plurality of chambers 112. The annular passage 111 is arranged inside the main body 100 and is in communication with the second hydraulic passage 120. The annular passage 111 is in communication with the second hydraulic passage 120 through the communication passage 140. The plurality of chambers 112 are arranged at intervals in the circumferential direction of the main body 100 and form outlets at the outer periphery of the main body 100 in the radial direction. The plurality of locking members 200 are arranged one by one in the plurality of chambers 112. Optionally, in the embodiment, the number of the locking members 200 is six, and three groups of the locking members 200 are arranged at intervals of 120°. The two locking members 200 in the same group are arranged in an up-down manner. Further, a passage is arranged between the two chambers 112 corresponding to the two locking members 200 in the same group.
[0044] In the case where the communication passage 140 is opened by the on-off valve 300, the communication passage 140 guides the hydraulic fluid in the second hydraulic passage 120 into the annular passage 111. Through the distribution of the annular passage 111, the hydraulic fluid enters the chambers 112 corresponding to the plurality of groups of the locking members 200, respectively, to pressurize the locking members 200. In the embodiment, the first hydraulic passage 110 further includes a plurality of through holes 113 arranged at intervals at the bottom of the annular passage 111 and in communication with the plurality of chambers 112, respectively.
[0045] The fault displacement measuring device provided by the embodiment comprises a packer, a measuring body and the stop anchor 10. The packer, the stop anchor 10 and the measuring body are sequentially arranged. The measuring body is used for performing fault displacement measurement. The packer is provided with a hydraulic cavity. After hydraulic fluid is introduced into the hydraulic cavity, the packer is expanded under pressure, so that the position of the fault displacement measuring device can be sealed, and external water flow or impurities can be prevented from entering the space defined by the packer. Further, the hydraulic cavity is in communication with the second hydraulic channel 120, and the hydraulic cavity is used for being in communication with the second hydraulic channel 120 when the internal hydraulic pressure reaches the second preset pressure. In other words, when the pressure in the hydraulic cavity reaches a certain degree, the packer is expanded to a certain degree, and then the hydraulic cavity and the second hydraulic channel 120 are in communication, so that the anchoring of the fault displacement measuring device can be realized after the space is sealed, which means that the packer and the stop anchor 10 are controlled by the same hydraulic passage. After the packer is sealed, the anchoring of the stop anchor 10 can be directly performed, the operation steps are saved, the operation difficulty is reduced, and the efficiency is improved.
[0046] It is worth noting that the communication relationship between the hydraulic cavity and the second hydraulic channel 120 can be realized by arranging a pressure valve in the channel between the hydraulic cavity and the second hydraulic channel 120, that is, when the pressure valve senses that the pressure in the hydraulic cavity reaches the second preset pressure, that is, when the packer is sealed, the hydraulic cavity and the second hydraulic channel 120 can be in communication, and the stop anchor 10 can be filled with liquid.
[0047] In summary, in the stop anchor 10 and fault displacement measuring device provided in the embodiment, when anchoring is performed, hydraulic fluid is introduced from the second hydraulic channel 120, and when the switch valve 300 is pressed to reach the first preset pressure, the first hydraulic channel 110 and the second hydraulic channel 120 are turned on, so as to press the stopper 200, and the stopper 200 can extend out of the outlet to achieve anchoring. At the same time, when the switch valve 300 opens the first hydraulic channel 110, the locking assembly 400 extends into the second hydraulic channel 120 to lock the switch valve 300 in the state of opening the first hydraulic channel 110, and even if the pressure is removed, the pressure valve remains in the state of opening the first hydraulic channel 110, and the hydraulic fluid flows back under the action of pressure, so as to achieve pressure loss of the stopper 200, so that the stopper 200 can automatically retract into the first hydraulic channel 110, i.e. the main body 100, so as to achieve the purpose of releasing anchoring. After the stopper 200 releases anchoring, the operator can easily take out the equipment using the stop anchor 10, and the technical problem of increasing the measuring and detecting cost caused by the large amount of labor and energy required to take out the equipment in the prior art is improved. Further, since the hydraulic cavity of the packer is communicated with the second hydraulic channel 120, it means that the packer and the stop anchor 10 use the same hydraulic path to achieve control, and after the packer completes sealing, anchoring of the stop anchor 10 can be directly performed, which saves the operation steps, reduces the operation difficulty, and improves the efficiency.
[0048] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A stop anchor (10) characterized by, The utility model relates to a hydraulic anchor lock, comprising: a main body (100) provided with a first hydraulic passage (110) and a second hydraulic passage (120) in communication; the first hydraulic passage (110) forms an outlet on the outside of the main body (100) in the radial direction; a stopper (200) movably arranged in the first hydraulic passage (110) and used to extend from the outlet to achieve anchoring under pressure and to retract into the first hydraulic passage (110) to release anchoring when the pressure is lost; a switch valve (300) movably arranged in the second hydraulic passage (120) and blocking the first hydraulic passage (110); the switch valve (300) is also used to move along the second hydraulic passage (120) to open the first hydraulic passage (110) when the pressure reaches a first preset pressure; a locking assembly (400) movably arranged inside the main body (100) and abutting against the switch valve (300); when the switch valve (300) opens the first hydraulic passage (110), the switch valve (300) is also used to avoid the locking assembly (400) extending into the second hydraulic passage (120) to lock the switch valve (300).
2. A stop anchor (10) according to claim 1, characterized in that The locking assembly (400) comprises a first elastic member (420) and a locking member (410); the locking member (410) is movably connected to the main body (100) and abutting against the switch valve (300); the first elastic member (420) is connected to the locking member (410) and used to drive the locking member (410) to extend into the second hydraulic passage (120) to lock the switch valve (300) when the switch valve (300) avoids the locking member (410).
3. A stop anchor (10) according to claim 2, characterized in that An active passage (130) is formed inside the main body (100) and in communication with the second hydraulic passage (120); the locking member (410) and the first elastic member (420) are both arranged in the active passage (130); one end of the locking member (410) extends from the active passage (130) to abut against the switch valve (300); the first elastic member (420) abuts against the other end of the locking member (410).
4. A stop anchor (10) according to claim 3, characterized in that The movable channel (130) comprises a first movable section (131) and a second movable section (132), the first movable section (131) is communicated with the second hydraulic channel (120), the second movable section (132) is arranged at one end of the first movable section (131) away from the second hydraulic channel (120), and the inner diameter of the second movable section (132) is greater than that of the first movable section (131); the locking member (410) comprises a locking part (411) and a limiting part (412), the diameter of the limiting part (412) is greater than the inner diameter of the locking part (411); the locking part (411) is arranged in the first movable section (131), and the limiting part (412) is arranged in the second movable section (132); the first elastic member (420) is arranged in the second movable section (132) and abuts against the limiting part (412).
5. A stop anchor (10) according to claim 4, characterized in that The end of the locking part (411) for locking the on-off valve (300) is wedge-shaped, and when the locking part (411) locks the on-off valve (300), the slope of the end of the locking part (411) is located on the side of the end of the limiting part (412) away from the on-off valve (300).
6. A stop anchor (10) according to claim 3, characterized in that The movable channel (130) is opened at the outer periphery of the main body (100) in the radial direction, and the locking assembly further comprises a plugging member (430) which is plugged at the opening, and the end of the first elastic member (420) away from the locking member abuts against the plugging member (430).
7. A stop anchor (10) according to claim 1, characterized in that The main body (100) is further provided with a communication channel (140), and the first hydraulic channel (110) is communicated with the communication channel (140); the communication channel (140) is communicated with the second hydraulic channel (120) from the side of the second hydraulic channel (120) in the radial direction; the on-off valve (300) plugs the communication channel (140), and is used to move along the second hydraulic channel (120) to avoid the communication channel (140) to open the communication channel (140) when the pressure reaches a first preset pressure.
8. A stop anchor (10) according to claim 1, characterized in that The first hydraulic channel (110) comprises an annular channel (111) and a plurality of cavities (112); the annular channel (111) is arranged inside the main body (100), and the annular channel (111) is communicated with the second hydraulic channel (120); a plurality of cavities (112) are distributed along the circumferential direction of the main body (100), and the outlet is formed at the outer periphery of the main body (100) in the radial direction; the stop member (200) is a plurality of stop members, and a plurality of stop members (200) are arranged one by one in a plurality of cavities (112).
9. A stop anchor (10) according to claim 8, characterized in that The first hydraulic channel (110) further comprises a plurality of through holes (113), and the plurality of through holes (113) are distributed at the bottom of the annular channel (111) at intervals, and the plurality of through holes (113) are respectively communicated with the plurality of cavities (112).
10. A fault displacement measurement apparatus, comprising: The device comprises a packer, a measuring body and a stop anchor (10) as claimed in any one of claims 1-9; the packer, the stop anchor (10) and the measuring body are arranged in sequence; the packer is provided with a hydraulic cavity, the hydraulic cavity is communicated with the second hydraulic passage (120); and the hydraulic cavity is used for conducting with the second hydraulic passage (120) when the internal hydraulic pressure reaches the second preset pressure; and the measuring body is used for executing fault displacement measurement.