Prestressed anchor cable for rock reinforcement and construction method thereof

Abstract

The present invention proposes a prestressed anchor cable for rock reinforcement and a construction method thereof. The anchor cable includes an anchor cable rod, an assembly, a switching ring, a slurry storage component, a slurry outlet component and an assembly nut. The assembly includes an inner assembly column, an outer assembly ring and a connecting frame. The anchor cable rod is inserted into an anchor hole opened on the underwater rock mass. The anchor cable rod includes a threaded section, and a thread is formed on the outer surface of the threaded section. The assembly is completed by sleeve-fitting the assembly onto the anchor cable rod and sleeve-fitting the assembly nut onto the threaded section and rotating it. After the assembly is connected to the anchor cable rod, the slurry coating cavity is naturally aligned with the anchor hole, which facilitates the positioning of the slurry coating position. During the slurry coating process, the cavity wall of the slurry coating cavity can block the water flow, reducing the influence of the water flow on the slurry coating work. By adjusting the switching ring to rotate uniformly along the annular hole, the mortar squeezed out of the slurry storage component can evenly cover the slurry coating cavity, thereby making the slurry coating uniform and thereby accelerating the slurry coating efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of underwater prestressed anchor cables, and in particular to a prestressed anchor cable for rock reinforcement and a construction method thereof. Background Art

[0002] In the construction of large-scale water conservancy and hydropower projects, the design and construction of rock reinforcement structures are of paramount importance to ensure the long-term social and economic benefits of the entire water conservancy and hydropower project, and underwater prestressed anchor cables are the main devices used to reinforce underwater rock masses.

[0003] Underwater rock reinforcement with prestressed anchor cables is achieved by embedding anchor cables within the rock mass and applying prestress to enhance its stability and bearing capacity. This technology effectively prevents rock breakage and slippage, while also increasing its tensile and shear strengths. Prestressed anchor cables, typically made of steel wire rope or rebar, are secured and tensioned within the rock mass using specialized equipment to achieve the desired reinforcement effect.

[0004] Specifically, when carrying out underwater prestressed anchor cable construction, it mainly includes: rock survey, drilling, installation of anchor cables, tensioning of anchor cables, fixing of anchor cables, and detection and monitoring. During the installation of anchor cables, it is necessary to apply a mortar protective layer to the hole portion of the anchor cable, mainly to protect the anchor cable from erosion and damage from the external environment and to extend the service life of the anchor cable. When applying mortar on the surface of the anchor cable, it is necessary to apply it evenly to the hole mouth, and after the mortar is cured, it needs to be inspected and trimmed to ensure the quality of the mortar protective layer. However, since the mortar application process is carried out underwater, when applying the mortar to the underwater anchor cable, both the mortar application step and the mortar curing step will be affected by the water flow. When the water flow is large, the amount of mortar applied will increase, and the time required for the mortar to cure will increase. Therefore, this solution specifically proposes a prestressed anchor cable for rock reinforcement and its construction method to solve the above problems. Summary of the Invention

[0005] In view of this, the present invention proposes a prestressed anchor cable for rock reinforcement and a construction method thereof, wherein the assembly is completed by sleeved on the anchor rod, and the assembly nut is sleeved on the threaded section and rotated, at which time the grouting cavity covers the hole wall of the anchor hole, and the adapter is adjusted to rotate along the annular hole, and the mortar is squeezed out from the slurry storage component through the slurry outlet component, and the extruded mortar naturally falls into the grouting cavity and covers the anchor hole, thereby completing the grouting process. Since the grouting cavity is naturally aligned with the anchor hole after the assembly is connected to the anchor rod, it is convenient to position the grouting position. During the grouting process, the cavity wall of the grouting cavity can block the water flow, reducing the influence of the water flow on the grouting work. By adjusting the adapter to rotate along the annular hole at a uniform speed, the mortar squeezed out from the slurry storage component can evenly cover the grouting cavity, thereby making the grouting uniform and thereby accelerating the grouting efficiency.

[0006] The technical solution of the present invention is achieved as follows: The present invention provides a prestressed anchor cable for rock reinforcement, comprising an anchor cable rod, an assembly, a switching ring, a slurry storage component, a slurry discharge component and an assembly nut, wherein the assembly comprises an inner assembly column, an outer assembly ring and a connecting frame, wherein:

[0007] The anchor rod is inserted into an anchor hole opened on an underwater rock mass, and the anchor rod comprises a threaded section, and a thread is formed on an outer surface of the threaded section;

[0008] The inner assembly column is located on the inner side of the outer assembly ring, and the inner assembly column is fixedly connected to the outer assembly ring through a connecting frame. A through hole for the anchor rod to pass through is opened on the inner assembly column, and the threaded section is located at the through hole;

[0009] A slurry coating cavity and an annular hole are formed between the inner assembly column and the outer assembly ring. The slurry coating cavity is communicated with the annular hole. The slurry coating cavity is located at the hole wall of the anchor hole. The adapter ring is rotatably arranged on the inner side of the annular hole.

[0010] The slurry storage component is provided on the adapter ring and is used for storing mortar;

[0011] The slurry discharge component is provided on the slurry storage component and is used to squeeze out the mortar stored in the slurry storage component;

[0012] The assembly nut is threadedly connected to the threaded section and is used to press the inner assembly column toward the side close to the underwater rock mass.

[0013] On the basis of the above technical solution, preferably, the slurry storage component includes an outer assembly tube and an inner assembly tube, and the slurry discharge component includes a regulating rod and a grouting plug, wherein,

[0014] The outer assembly cylinder is sleeved on the outer side of the inner assembly cylinder and fixedly connected to the inner assembly cylinder. The inner assembly cylinder is used to store mortar. A mortar outlet hole and a threaded hole are respectively opened at both ends of the inner assembly cylinder. The end of the inner assembly cylinder with the mortar outlet hole is aligned with the end of the outer assembly cylinder.

[0015] The regulating rod passes through the threaded hole and is threadedly connected to the threaded hole;

[0016] The grouting plug is slidably arranged inside the inner assembly cylinder and is sealed and fitted with the cavity wall of the inner assembly cylinder. The grouting plug is rotatably connected to the regulating rod.

[0017] Based on the above technical solution, preferably, an assembly hole is provided on the adapter ring, a thread is formed on the outer surface of the outer assembly cylinder, and the outer assembly cylinder is threadedly connected to the assembly hole, and a water outlet is provided between the upper end face and the lower end face of the outer assembly cylinder.

[0018] On the basis of the above technical solution, preferably, it further includes a top cover and a connecting tooth column, wherein,

[0019] The top cover is detachably arranged at the end of the outer assembly cylinder and covers the water outlet. The end of the outer assembly cylinder is provided with a positioning protrusion, and the top cover is provided with a positioning socket for the positioning protrusion to be inserted;

[0020] The connecting gear column is rotatably connected to the top cover, a rack is formed on the outer surface of the connecting gear column, a connecting gear hole is opened at the end of the regulating rod, the connecting gear column is inserted into the inner side of the connecting gear hole and meshes with the connecting gear hole.

[0021] On the basis of the above technical solution, preferably, it further includes a regulating gear, a gear ring, a plug-in column and a locking component, wherein,

[0022] The regulating gear is arranged at the end of the connecting gear column;

[0023] The gear ring is fixedly connected to the plug-in column, the outer assembly ring body is provided with a plug-in hole for the plug-in column to be plugged in, the inner side of the gear ring is provided with a tooth groove, and the regulating gear is meshed with the tooth groove;

[0024] The locking component is used to locate the position of the plug-in column relative to the outer assembly ring body.

[0025] On the basis of the above technical solution, preferably, the locking component includes a threaded rod, an upper clamping ring and a clamping nut, wherein,

[0026] The threaded rod is arranged on the outer assembly ring body;

[0027] The upper clamping ring is arranged on the plug-in column, and a connecting hole for the threaded rod to pass through is opened on the upper clamping ring;

[0028] The clamping nut is threadedly connected to the threaded rod and is used to squeeze the upper clamping ring toward the side close to the outer assembly ring body.

[0029] On the basis of the above technical solution, preferably, the top cover includes an outer plate, which is located on the side of the upper clamping ring close to the outer assembly ring body and fits with the upper clamping ring, and a lower clamping ring is provided on the threaded rod, which is located on the side of the outer plate away from the upper clamping ring and fits with the outer plate.

[0030] On the basis of the above technical solution, preferably, it further includes a supporting plate and a positioning lock, wherein,

[0031] The outer assembly ring body is provided with a sliding hole connected to the slurry coating cavity, and the supporting plate is slidably arranged inside the sliding hole and covers the assembly hole, and the supporting plate is sealed and fitted with the hole wall of the sliding hole;

[0032] The positioning lock is arranged between the supporting plate and the outer assembly ring body, and is used to locate the sliding position of the supporting plate.

[0033] On the basis of the above technical solution, preferably, the support plate includes a first limit plate and a second limit plate, the first limit plate is located on the outside of the outer assembly ring body, and the second limit plate is located inside the slurry coating chamber, and the first limit plate and the second limit plate are both used to limit the sliding position of the support plate.

[0034] The present invention also proposes a construction method for a prestressed anchor cable for rock reinforcement, comprising the above-mentioned prestressed anchor cable for rock reinforcement, comprising the following steps:

[0035] S1. Sleeve the inner assembly column onto the anchor rod, and pass the anchor rod through the connecting hole;

[0036] S2, adjusting the assembly to slide along the anchor rod until the assembly is pressed against the surface of the underwater rock mass;

[0037] S3. Sleeve the assembly nut onto the threaded section and rotate it until the assembly nut presses against the assembly body, and the slurry cavity covers the wall of the anchor hole;

[0038] S4. Adjust the adapter ring to rotate along the annular hole, and squeeze the mortar out of the mortar storage component through the mortar outlet component. The squeezed mortar naturally falls into the mortar coating cavity and covers the anchor hole, completing the mortar coating process.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. In the present invention, a prestressed anchor cable for rock reinforcement and its construction method are provided. The assembly is completed by sleeve-fitting the assembly onto the anchor cable rod, sleeve-fitting the assembly nut onto the threaded section and rotating it. At this time, the grouting cavity covers the wall of the anchor hole. The adapter is adjusted to rotate along the annular hole, and the mortar is squeezed out of the slurry storage component through the slurry outlet component. The extruded mortar naturally falls into the grouting cavity and covers the anchor hole, thereby completing the grouting process. After the assembly is connected to the anchor cable rod, the grouting cavity is naturally aligned with the anchor hole, which facilitates positioning of the grouting position. During the grouting process, the cavity wall of the grouting cavity can block the water flow, reducing the influence of the water flow on the grouting work. By adjusting the adapter to rotate along the annular hole at a uniform speed, the mortar squeezed out of the slurry storage component can evenly cover the grouting cavity, thereby making the grouting uniform and thereby accelerating the grouting efficiency.

[0041] 2. The present invention provides a prestressed anchor cable for rock reinforcement and a construction method thereof. Specifically, when the adjusting adapter ring rotates at a uniform speed along the annular hole, the regulating gear synchronously follows the adapter ring in rotation. Under the meshing action of the gear ring, the regulating gear rotates at a uniform speed while following the rotation of the adapter ring. The regulating gear drives the connecting gear column to rotate, and the connecting gear column drives the regulating rod meshed with it to rotate. The regulating rod pushes the grouting plug to move at a uniform speed under the action of the threaded connection. The grouting plug extrude the mortar stored in the inner assembly cylinder at a uniform speed, so that the mortar can be evenly extruded into the interior of the grouting cavity to increase the uniformity of the grouting. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a cross-sectional schematic diagram of the prestressed anchor cable for rock reinforcement during construction according to the present invention;

[0043] Figure 2 The present invention is used for rock reinforcement prestressed anchor cable Figure 1 An enlarged schematic diagram of the structure at the middle assembly;

[0044] Figure 3 It is a three-dimensional schematic diagram of the connection method between the assembly of the prestressed anchor cable for rock reinforcement and the anchor cable rod of the present invention;

[0045] Figure 4 The present invention is used for rock reinforcement prestressed anchor cable Figure 3 An enlarged schematic diagram of point A is shown;

[0046] Figure 5 It is a three-dimensional schematic diagram of the structure of the assembly of the prestressed anchor cable for rock reinforcement of the present invention;

[0047] Figure 6 The present invention is used for rock reinforcement prestressed anchor cable Figure 5 An exploded schematic diagram of the structure shown;

[0048] Figure 7 The present invention is used for rock reinforcement prestressed anchor cable Figure 5 a bottom perspective schematic diagram of the structure shown;

[0049] Figure 8 It is a three-dimensional schematic diagram of the connection method between the assembly body and the adapter ring of the prestressed anchor cable for rock reinforcement of the present invention;

[0050] Figure 9 It is a three-dimensional schematic diagram of the connection method between the slurry storage component and the top cover of the prestressed anchor cable for rock reinforcement of the present invention;

[0051] Figure 10 It is a top perspective schematic diagram of the structure of the slurry storage component for rock reinforcement prestressed anchor cable of the present invention;

[0052] Figure 11 It is a bottom-up stereoscopic schematic diagram of the top cover structure of the prestressed anchor cable for rock reinforcement according to the present invention.

[0053] In the figure: assembly nut 10, anchor rod 11, threaded section 111, grouting pipe 12, support frame 13, anchor head 14, assembly body 2, assembly column 21, through hole 211, outer assembly ring 22, plug hole 221, sliding hole 222, connecting frame 23, slurry coating cavity 24, annular hole 25, adapter ring 3, assembly hole 31, slurry storage component 4, outer assembly cylinder 41, water outlet hole 411, inner assembly cylinder 42, slurry outlet hole 421, threaded hole 422, slurry outlet part Part 5, regulating rod 51, connecting tooth hole 511, grouting plug 52, top cover 61, outer plate 612, connecting tooth column 62, positioning protrusion 63, regulating gear 64, handle 65, gear ring 71, tooth groove 711, plug-in column 72, locking component 8, threaded rod 81, upper clamping ring 82, connecting hole 821, clamping nut 83, lower clamping ring 84, support plate 91, first limit plate 911, second limit plate 912, positioning lock buckle 92, pull rod 93. DETAILED DESCRIPTION

[0054] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only 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 making creative efforts are within the scope of protection of the present invention.

[0055] like Figures 1 to 11As shown, the prestressed anchor cable for rock reinforcement of the present invention includes an anchor rod 11, an assembly body 2, a switching ring 3, a slurry storage component 4, a slurry discharge component 5 and an assembly nut 10, the assembly body 2 includes an inner assembly column 21, an outer assembly ring body 22 and a connecting frame 23, wherein the anchor rod 11 is inserted into the anchor hole opened on the underwater rock mass, the anchor rod 11 includes a threaded section 111, and the outer surface of the threaded section 111 is formed with a thread; the inner assembly column 21 is located on the inner side of the outer assembly ring body 22, and the inner assembly column 21 is fixedly connected to the outer assembly ring body 22 through the connecting frame 23, and a thread for the anchor rod is opened on the inner assembly column 21. 11 passes through the through-hole 211, and the threaded section 111 is located at the through-hole 211; a slurry coating chamber 24 and an annular hole 25 are formed between the inner assembly column 21 and the outer assembly ring body 22, the slurry coating chamber 24 is communicated with the annular hole 25, the slurry coating chamber 24 is located at the hole wall of the anchor hole, and the adapter ring 3 is rotatably arranged on the inner side of the annular hole 25; the slurry storage component 4 is arranged on the adapter ring 3 for storing mortar; the slurry discharge component 5 is arranged on the slurry storage component 4 for squeezing out the mortar stored in the slurry storage component 4; the assembly nut 10 is threadedly connected to the threaded section 111, and is used to press the inner assembly column 21 toward the side close to the underwater rock mass.

[0056] In the specific implementation, it also includes a grouting pipe 12, a support frame 13 and an anchor head 14. The support frame 13 is fixedly connected to the peripheral side of the anchor rod 11, and the grouting pipe 12 passes through the support frame 13. The support frame 13 limits the positions of the anchor rod 11 and the grouting pipe 12. The anchor head 14 is arranged at the end of the grouting pipe 12 for anchoring the anchor cable.

[0057] In the specific implementation, the adapter ring 3 is fitted with the inner assembly column 21 and the outer assembly ring 22, and the two ends of the adapter ring 3 are aligned with the two openings of the annular hole 25 respectively. The cavity of the slurry coating cavity 24 completely covers the adapter ring 3, and the side wall of the connecting frame 23 is an inclined wall, which is used to prevent mortar from accumulating on the connecting frame 23.

[0058] Specifically, when performing the mortar coating process, the assembly 2 is sleeved on the anchor rod 11, so that the anchor rod 11 passes through the through-hole 211, and then the assembly nut 10 is sleeved on the threaded section 111 and rotated. At this time, the assembly nut 10 moves toward the direction close to the underwater rock mass under the action of the threaded connection and squeezes the assembly 2 until the assembly 2 is pressed against the surface of the underwater rock mass, thereby completing the assembly process of the assembly 2. At this time, the grouting cavity 24 covers the hole wall of the anchor hole, and the adjusting adapter ring 3 rotates along the annular hole 25, and the mortar is squeezed out of the mortar storage component 4 through the slurry outlet component 5. The extruded mortar naturally falls into the interior of the slurrying cavity 24 and covers the anchor hole, thereby completing the slurrying process. After the assembly 2 is connected to the anchor rod 11, the slurry coating cavity 24 is naturally aligned with the anchor hole, which facilitates the positioning of the slurry coating position. During the slurry coating process, the cavity wall of the slurry coating cavity 24 can block the water flow, reducing the impact of the water flow on the slurry coating work. By adjusting the adapter ring 3 to rotate uniformly along the annular hole 25, the mortar squeezed out of the slurry storage component 4 can evenly cover the slurry coating cavity, thereby making the slurry coating uniform, thereby accelerating the slurry coating efficiency.

[0059] As a preferred embodiment, the slurry storage component 4 includes an outer assembly cylinder 41 and an inner assembly cylinder 42, and the slurry discharge component 5 includes a regulating rod 51 and a grouting plug 52, wherein the outer assembly cylinder 41 is sleeved on the outside of the inner assembly cylinder 42 and fixedly connected to the inner assembly cylinder 42, and the inner assembly cylinder 42 is used to store mortar, and a slurry discharge hole 421 and a threaded hole 422 are respectively provided at both ends of the inner assembly cylinder 42, and one end of the inner assembly cylinder 42 with the slurry discharge hole 421 is aligned with the end of the outer assembly cylinder 41; the regulating rod 51 passes through the threaded hole 422 and is threadedly connected to the threaded hole 422; the grouting plug 52 is slidably arranged inside the inner assembly cylinder 42 and is sealed and fitted with the cavity wall of the inner assembly cylinder 42, and the grouting plug 52 is rotatably connected to the regulating rod 51.

[0060] In a specific implementation, the height of the inner assembly cylinder 42 is lower than that of the outer assembly cylinder 41, so that there is a gap between the inner assembly cylinder 42 and the outer assembly cylinder 41 to facilitate the connection processing of the regulating rod 51. Specifically, when it is necessary to squeeze out the mortar stored in the inner assembly cylinder 42, the regulating rod 51 is adjusted to rotate. At this time, the regulating rod 51 pushes the grouting plug 52 to move under the action of the threaded connection, thereby squeezing out the mortar stored in the inner assembly cylinder 42.

[0061] As a preferred embodiment, an assembly hole 31 is provided on the adapter ring 3, a thread is formed on the outer surface of the outer assembly sleeve 41, and the outer assembly sleeve 41 is threadedly connected to the assembly hole 31, and a water outlet hole 411 is provided between the upper end surface and the lower end surface of the outer assembly sleeve 41.

[0062] This design allows the outer mounting sleeve 41 to be detachably connected to the adapter ring 3. Specifically, when installing the outer mounting sleeve 41, the outer mounting sleeve 41 is inserted into the interior of the mounting hole 31 and rotated. Under the action of the threaded connection, the outer mounting sleeve 41 gradually rotates into the interior of the mounting hole 31 and squeezes the water in the mounting hole 31 out of the inner side of the water outlet 411. This design allows the outer mounting sleeve 41 to be temporarily removed when the assembly body 2 is assembled to the anchor rod 11, reducing the weight of the assembly body 2 and facilitating assembly.

[0063] As a preferred embodiment, it also includes a top cover 61 and a connecting tooth column 62, wherein the top cover 61 is detachably arranged at the end of the outer assembly sleeve 41 and covers the water outlet 411, the end of the outer assembly sleeve 41 is provided with a positioning protrusion 63, and the top cover 61 is provided with a positioning socket 611 for the positioning protrusion 63 to be inserted; the connecting tooth column 62 is rotatably connected to the top cover 61, and a rack is formed on the outer surface of the connecting tooth column 62, and a connecting tooth hole 511 is provided at the end of the regulating rod 51, and the connecting tooth column 62 is inserted into the inner side of the connecting tooth hole 511 and engages with the connecting tooth hole 511.

[0064] In a specific implementation, the top cover 61 has an outer cover. When the top cover 61 is covered on the outer assembly cylinder 41 , the outer cover of the top cover 61 is sealed and fitted with the side wall of the outer assembly cylinder 41 .

[0065] Specifically, when the top cover 61 is placed on the outer assembly cylinder 41, the connecting tooth column 62 automatically engages with the inner side of the regulating rod 51, and the positioning protrusion 63 is inserted into the inner side of the positioning socket 611. Under the restriction of the positioning protrusion 63, the closing position of the top cover 61 is positioned. Specifically, the position of the grouting plug 52 can be adjusted by adjusting the rotation of the connecting tooth column 62.

[0066] As a preferred embodiment, it also includes a regulating gear 64, a ring gear 71, a plug-in column 72 and a locking component 8, wherein the regulating gear 64 is arranged at the end of the connecting gear column 62; the ring gear 71 is fixedly connected to the plug-in column 72, and a plug-in hole 221 for plugging the plug-in column 72 is provided on the outer assembly ring body 22, and a tooth groove 711 is provided on the inner side of the ring gear 71, and the regulating gear 64 is engaged with the tooth groove 711; the locking component 8 is used to position the plug-in column 72 relative to the outer assembly ring body 22.

[0067] Specifically, after the top cover 61 is placed on the outer assembly cylinder 41, the plug-in column 72 is inserted into the inner insertion hole 221, and the plug-in position of the plug-in column 72 is positioned by the locking component 8, thereby completing the installation of the ring gear 71. At this time, the ring gear 71 is located outside the control gear 64 and meshes with the control gear 64. With this design, when the adjustment adapter ring 3 rotates along the annular hole 25 at a uniform speed, the control gear 64 synchronously rotates with the adjustment adapter ring 3. Under the meshing action of the ring gear 71, the control gear 64 rotates synchronously with the adjustment adapter ring 3 while rotating at a uniform speed. The control gear 64 drives the connecting gear column 62 to rotate, and the connecting gear column 62 drives the control rod 51 meshed therewith to rotate. The control rod 51 pushes the grouting plug 52 to move at a uniform speed under the action of the threaded connection. The grouting plug 52 uniformly squeezes out the mortar stored in the inner assembly cylinder 42, so that the mortar can be evenly squeezed into the slurry coating cavity 24 to increase the uniformity of the slurry coating.

[0068] Preferably, a handle 65 is further provided on the top cover 61 , and the handle 65 is used to facilitate the adjustment of the rotation of the adapter ring 3 .

[0069] As a preferred embodiment, the locking component 8 includes a threaded rod 81, an upper clamping ring 82 and a clamping nut 83, wherein the threaded rod 81 is arranged on the outer assembly ring body 22; the upper clamping ring 82 is arranged on the plug-in column 72, and the upper clamping ring 82 is provided with a connecting hole 821 for the threaded rod 81 to pass through; the clamping nut 83 is threadedly connected to the threaded rod 81, and is used to squeeze the upper clamping ring 82 toward the side close to the outer assembly ring body 22.

[0070] Specifically, when the plug-in column 72 is inserted into the inside of the plug-in hole 221, the threaded rod 81 passes through the inner side of the connecting hole 821 at the same time. When the position of the plug-in column 72 needs to be fixed, the clamping nut 83 is sleeved on the threaded rod 81 and rotated. At this time, the clamping nut 83 moves toward the direction close to the upper clamping ring 82 under the action of the threaded connection and clamps the upper clamping ring 82, thereby completing the positioning of the plug-in column 72.

[0071] As a preferred embodiment, the top cover 61 includes an outer plate 612, which is located on the side of the upper clamping ring 82 close to the outer assembly ring body 22 and fits with the upper clamping ring 82. A lower clamping ring 84 is provided on the threaded rod 81, which is located on the side of the outer plate 612 away from the upper clamping ring 82 and fits with the outer plate 612, so as to increase the rotational stability of the outer plate 612.

[0072] With this design, after the plug-in column 72 is inserted into the plug-in hole 221, the upper clamping ring 82 can limit the outer plate 612. In this way, when the upper clamping ring 82 is tightened by the clamping nut 83, the outer plate 612 is tightened by the upper clamping ring 82, thereby completing the synchronous positioning of the top cover 61 and the gear ring 71, which is convenient for use.

[0073] As a preferred embodiment, it also includes a support plate 91 and a positioning lock buckle 92, wherein a sliding hole 222 connected to the coating chamber 24 is opened on the outer assembly ring body 22, and the support plate 91 is slidably set on the inner side of the sliding hole 222 and covers the assembly hole 31, and the support plate 91 is sealed and fitted with the hole wall of the sliding hole 222; the positioning lock buckle 92 is set between the support plate 91 and the outer assembly ring body 22, and is used to position the sliding position of the support plate 91.

[0074] Specifically, when the outer assembly cylinder 41 is connected to the inner side of the assembly hole 31, the supporting plate 91 can position the connection position of the outer assembly cylinder 41 by supporting the outer assembly cylinder 41 at the bottom. Specifically, after the outer assembly cylinder 41 is connected, by opening the positioning lock 92 and pulling the supporting plate 91, the slurry outlet hole 421 can be connected to the slurry coating chamber 24, which is convenient for slurry coating processing.

[0075] Preferably, a pull rod 93 is provided on the supporting plate 91 , and the position of the supporting plate 91 can be adjusted by pulling the pull rod 93 .

[0076] As a preferred embodiment, the support plate 91 includes a first limiting plate 911 and a second limiting plate 912. The first limiting plate 911 is located on the outside of the outer assembly ring 22, and the second limiting plate 912 is located inside the coating chamber 24. The first limiting plate 911 and the second limiting plate 912 are both used to limit the sliding position of the support plate 91.

[0077] In a specific implementation, when the support plate 91 is pulled outward until the support plate 91 is separated from the slurry outlet hole 421, the second limiting plate 912 can abut against the cavity wall of the slurry coating chamber 24 to complete the positioning of the sliding position of the support plate 91. When the support plate 91 is pushed until the support plate 91 blocks the slurry outlet hole 421, the first limiting plate 911 can abut against the outer wall of the outer assembly ring body 22 to complete the positioning of the sliding position of the support plate 91. In a specific implementation, the positioning lock 92 is connected to the first limiting plate 911.

[0078] The present invention also proposes a construction method for a prestressed anchor cable for rock reinforcement, comprising the above-mentioned prestressed anchor cable for rock reinforcement, comprising the following steps:

[0079] S1. Sleeve the inner assembly column 21 onto the anchor rod 11, so that the anchor rod 11 passes through the through hole 211;

[0080] S2, adjusting the assembly 2 to slide along the anchor rod 11 until the assembly 2 is pressed against the surface of the underwater rock mass;

[0081] S3. Sleeve the assembly nut 10 onto the threaded section 111 and rotate it until the assembly nut 10 presses against the assembly body 2. At this time, the slurry coating cavity 24 covers the wall of the anchor hole.

[0082] S4. Adjust the adapter ring 3 to rotate along the annular hole 25, and squeeze the mortar out of the mortar storage part 4 through the mortar outlet part 5. The squeezed mortar naturally falls into the mortar coating cavity 24 and covers the anchor hole, completing the mortar coating process.

[0083] Specifically, in this embodiment, mortar for application is stored in advance in the inner assembly cylinder 42, and the rotation speed of the adapter ring 3 is adjusted to a uniform rotation speed.

[0084] In some embodiments, after completing the connection processing of the assembly 2, the present invention also includes the following steps: inserting the outer assembly cylinder 41 into the interior of the assembly hole 31 and rotating it until the outer assembly cylinder 41 presses against the support plate 91. This step completes the connection processing of the slurry storage component 4. The slurry outlet hole 421 can be blocked by the support plate 91 to prevent the mortar from accidentally falling into the interior of the slurry coating cavity 24.

[0085] Preferably, after the connection processing of the slurry storage component 4, the top cover 61 is covered on the outer assembly cylinder 41. At this time, the plug-in column 72 is inserted into the inner side of the regulating rod 51 and engages with the regulating rod 51. The top cover 61 cannot rotate under the restriction of the positioning protrusion 63; the plug-in column 72 is inserted into the inside of the plug-in hole 221. At this time, the threaded rod 81 passes through the connecting hole 821, and the clamping nut 83 is sleeved on the threaded rod 81 and rotated until the upper clamping ring 82 is tightly fitted with the outer plate 612. At this time, the clamping nut 83 completes the connection processing of the top cover 61 and the gear ring 71 by clamping the upper clamping ring 82 and the outer plate 612.

[0086] In an embodiment of the present invention, the specific steps of extruding the mortar are:

[0087] Open the positioning lock 92 and pull the support plate 91 outward. At this time, the support plate 91 does not block the slurry outlet 421, and adjust the adapter ring 3 to rotate. At this time, the regulating gear 64 rotates under the action of the ring gear 71, and the grouting plug 52 slides along the inner assembly cylinder 42, and squeezes the mortar stored in the inner assembly cylinder 42 from the slurry outlet 421 to the inside of the slurry coating cavity 24. In this step, the movement rate of the grouting plug 52 is uniform.

[0088] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A prestressed anchor cable for rock reinforcement, characterized by: The invention comprises an anchor rod (11), an assembly (2), a switching ring (3), a slurry storage component (4), a slurry discharge component (5) and an assembly nut (10), wherein the assembly (2) comprises an inner assembly column (21), an outer assembly ring (22) and a connecting frame (23), wherein: The anchor rod (11) is inserted into an anchor hole opened on an underwater rock mass, and the anchor rod (11) comprises a threaded section (111), and a thread is formed on the outer surface of the threaded section (111); The inner assembly column (21) is located on the inner side of the outer assembly ring (22), and the inner assembly column (21) is fixedly connected to the outer assembly ring (22) via a connecting frame (23); a through hole (211) for the anchor rod (11) to pass through is provided on the inner assembly column (21), and the threaded section (111) is located at the through hole (211); A slurry coating cavity (24) and an annular hole (25) are formed between the inner assembly column (21) and the outer assembly ring (22); the slurry coating cavity (24) is communicated with the annular hole (25); the slurry coating cavity (24) is located at the hole wall of the anchor hole; and the adapter ring (3) is rotatably arranged on the inner side of the annular hole (25); The mortar storage component (4) is arranged on the adapter ring (3) and is used for storing mortar; The slurry discharge component (5) is arranged on the slurry storage component (4) and is used to squeeze out the mortar stored in the slurry storage component (4); The assembly nut (10) is threadedly connected to the threaded section (111) and is used to press the inner assembly column (21) toward the side close to the underwater rock mass.

2. The prestressed anchor cable for rock reinforcement according to claim 1, characterized in that: The slurry storage component (4) includes an outer assembly tube (41) and an inner assembly tube (42), and the slurry discharge component (5) includes a regulating rod (51) and a grouting plug (52), wherein: The outer assembly cylinder (41) is sleeved on the outer side of the inner assembly cylinder (42) and is fixedly connected to the inner assembly cylinder (42). The inner assembly cylinder (42) is used to store mortar. A mortar outlet hole (421) and a threaded hole (422) are respectively provided at both ends of the inner assembly cylinder (42). One end of the inner assembly cylinder (42) where the mortar outlet hole (421) is provided is aligned with the end of the outer assembly cylinder (41). The regulating rod (51) passes through the threaded hole (422) and is threadedly connected to the threaded hole (422); The grouting plug (52) is slidably arranged inside the inner assembly cylinder (42) and is sealed and fitted with the cavity wall of the inner assembly cylinder (42). The grouting plug (52) is rotatably connected to the regulating rod (51).

3. The prestressed anchor cable for rock reinforcement according to claim 2, characterized in that: The adapter ring (3) is provided with an assembly hole (31), the outer surface of the outer assembly cylinder (41) is formed with a thread, and the outer assembly cylinder (41) is threadedly connected to the assembly hole (31), and a water outlet hole (411) is provided between the upper end surface and the lower end surface of the outer assembly cylinder (41).

4. The prestressed anchor cable for rock reinforcement according to claim 3, characterized in that: It also includes a top cover (61) and a connecting tooth column (62), wherein: The top cover (61) is detachably arranged at the end of the outer assembly cylinder (41) and covers the water outlet (411); a positioning protrusion (63) is provided at the end of the outer assembly cylinder (41), and a positioning socket (611) for the positioning protrusion (63) to be inserted is provided on the top cover (61); The connecting tooth column (62) is rotatably connected to the top cover (61), and a rack is formed on the outer surface of the connecting tooth column (62). The end of the regulating rod (51) is provided with a connecting tooth hole (511), and the connecting tooth column (62) is inserted into the inner side of the connecting tooth hole (511) and meshes with the connecting tooth hole (511).

5. The prestressed anchor cable for rock reinforcement according to claim 4, characterized in that: It also includes a regulating gear (64), a gear ring (71), a plug-in column (72) and a locking component (8), wherein: The regulating gear (64) is arranged at the end of the connecting gear column (62); The gear ring (71) is fixedly connected to the plug-in column (72); a plug-in hole (221) for plugging the plug-in column (72) is provided on the outer assembly ring body (22); a tooth groove (711) is provided on the inner side of the gear ring (71); and the regulating gear (64) is meshed with the tooth groove (711); The locking component (8) is used to locate the position of the plug-in column (72) relative to the outer assembly ring body (22).

6. The prestressed anchor cable for rock reinforcement according to claim 5, characterized in that: The locking component (8) comprises a threaded rod (81), an upper clamping ring (82) and a clamping nut (83), wherein: The threaded rod (81) is arranged on the outer assembly ring (22); The upper clamping ring (82) is arranged on the plug-in column (72), and a connecting hole (821) for the threaded rod (81) to pass through is opened on the upper clamping ring (82); The clamping nut (83) is threadedly connected to the threaded rod (81) and is used to press the upper clamping ring (82) toward the side close to the outer assembly ring body (22).

7. The prestressed anchor cable for rock reinforcement according to claim 6, characterized in that: The top cover (61) includes an outer plate (612), which is located on a side of the upper clamping ring (82) close to the outer assembly ring body (22) and fits with the upper clamping ring (82). A lower clamping ring (84) is provided on the threaded rod (81), and the lower clamping ring (84) is located on a side of the outer plate (612) away from the upper clamping ring (82) and fits with the outer plate (612).

8. The prestressed anchor cable for rock reinforcement according to claim 7, characterized in that: It also includes a supporting plate (91) and a positioning lock (92), wherein: The outer assembly ring body (22) is provided with a sliding hole (222) connected to the slurry coating cavity (24), and the supporting plate (91) is slidably arranged on the inner side of the sliding hole (222) and covers the assembly hole (31), and the supporting plate (91) is sealed and fitted with the hole wall of the sliding hole (222); The positioning lock buckle (92) is arranged between the supporting plate (91) and the outer assembly ring body (22) and is used to locate the sliding position of the supporting plate (91).

9. The prestressed anchor cable for rock reinforcement according to claim 8, characterized in that: The supporting plate (91) includes a first limiting plate (911) and a second limiting plate (912), wherein the first limiting plate (911) is located outside the outer assembly ring body (22), and the second limiting plate (912) is located inside the coating cavity (24), and the first limiting plate (911) and the second limiting plate (912) are both used to limit the sliding position of the supporting plate (91).

10. A construction method for prestressed anchor cables for rock reinforcement according to claim 1, characterized in that: The construction method comprises the following steps: S1. Sleeve the inner assembly column (21) onto the anchor rod (11), so that the anchor rod (11) passes through the through hole (211); S2, adjusting the assembly (2) to slide along the anchor rod (11) until the assembly (2) is pressed against the surface of the underwater rock mass; S3, sleeve the assembly nut (10) onto the threaded section (111) and rotate it until the assembly nut (10) presses against the assembly body (2), and the slurry coating cavity (24) covers the wall of the anchor hole; S4. The adapter ring (3) is adjusted to rotate along the annular hole (25), and the mortar is squeezed out from the mortar storage part (4) through the mortar outlet part (5). The squeezed mortar naturally falls into the interior of the mortar coating cavity (24) and covers the anchor hole, completing the mortar coating process.

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