Pre-stressed anchor cable for rock mass reinforcement and construction method of pre-stressed anchor cable

Abstract

The anchor cable comprises an anchor cable rod, an assembly body, an adapter ring, a slurry storage component, a slurry outlet component and an assembly nut, the assembly body comprises an inner assembly column body, an outer assembly ring body and a connecting frame, the anchor cable rod is inserted into an anchoring hole formed in an underwater rock mass, the anchor cable rod comprises a threaded section, and the threaded section is connected with the adapter ring. Threads are formed on the outer surface of the threaded section. The anchor cable rod is sleeved with the assembling body, the threaded section is sleeved with the assembling nut, and the assembling nut rotates, so that assembling treatment of the assembling body is completed, after the assembling body is connected to the anchor cable rod, the slurry coating cavity naturally aligns to the anchoring hole, the slurry coating position can be conveniently positioned, in the slurry coating process, the cavity wall of the slurry coating cavity can shield water flow, and the slurry coating effect is improved. According to the mortar coating device, the influence of water flow on the mortar coating work is reduced, mortar extruded out of the mortar storage component can uniformly cover the mortar coating cavity by adjusting the adapter ring to rotate along the annular hole at a constant speed, so that the mortar coating is uniform, and the mortar coating efficiency is improved.

Description

Technical Field

[0001] The 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 the top priority 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.

[0003] Underwater rock reinforcement prestressed anchor cables are embedded in the rock mass and prestressed to enhance the stability and bearing capacity of the rock mass. This technology can effectively prevent the cracking and sliding of the rock mass and improve the tensile strength and shear strength of the rock mass. Prestressed anchor cables are usually made of steel wire ropes or steel bars, and are fixed and tensioned in the rock mass through special equipment to achieve the reinforcement effect.

[0004] Specifically, when carrying out underwater prestressed anchor cable construction, it mainly includes: rock survey, drilling, anchor cable installation, anchor cable tensioning, anchor cable fixing, and detection and monitoring. During the installation of the anchor cable, it is necessary to apply a mortar protective layer to the part of the anchor cable where it exits the hole, 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 is necessary to inspect and trim it 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 scheme 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 sleeved on the anchor cable rod, and the assembly nut is sleeved on the threaded section and rotated, thereby completing the assembly process of the assembly, at which time the grouting cavity covers the hole wall of the anchor hole, and the adapter ring is adjusted to rotate along the annular hole, and the mortar is squeezed out of 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 after the assembly is connected to the anchor cable rod, the grouting cavity is naturally aligned with the anchor hole, which facilitates the positioning process 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, and by adjusting the adapter ring 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, thereby accelerating the grouting efficiency.

[0006] The technical solution of the present invention is implemented 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 outlet 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 provided 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 body, the slurry coating cavity is connected to the annular hole, the slurry coating cavity is located at the hole wall of the anchor hole, and the adapter ring is rotatably arranged on the inner side of the annular hole;

[0010] The mortar storage component is arranged on the adapter ring and is used to store mortar;

[0011] The slurry discharge component is arranged on the slurry storage component and is used to extrude 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 outlet 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. Both ends of the inner assembly cylinder are respectively provided with a mortar outlet hole and a threaded hole. One 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 tube and is sealed and fitted with the cavity wall of the inner assembly tube. 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 sleeve, and the outer assembly sleeve is threadedly connected to the assembly hole, and a water outlet hole is provided between the upper end surface and the lower end surface of the outer assembly sleeve.

[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 plugged in.

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

[0021] On the basis of the above technical solution, preferably, it also 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 press the upper clamping ring toward a 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 also 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 buckle 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 cavity, 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 mass reinforcement, comprising the above-mentioned prestressed anchor cable for rock mass reinforcement, comprising the following steps:

[0035] S1. Sleeve the inner assembly column onto the anchor rod, and pass the anchor rod through the through 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 on the threaded section and rotate it until the assembly nut presses against the assembly body, and the grouting cavity covers the hole wall of the anchor hole;

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

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

[0040] 1. In a prestressed anchor cable for rock reinforcement and a construction method thereof, 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. At this time, the grouting cavity covers the hole wall of the anchor hole. The adapter ring 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 the 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 ring 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, thereby accelerating the grouting efficiency.

[0041] 2. In a prestressed anchor cable for rock reinforcement and a construction method thereof, when the adjusting adapter ring rotates at a uniform speed along the annular hole, the regulating gear synchronously follows the rotation of the adapter ring. Under the meshing action of the gear ring, the regulating gear rotates synchronously 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 meshing 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 inside 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 used for rock reinforcement during construction of the present invention;

[0043] Figure 2 The invention is a prestressed anchor cable for rock reinforcement. Figure 1 A magnified schematic diagram of the structure at the middle assembly;

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

[0045] Figure 4 The invention is a prestressed anchor cable for rock reinforcement 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 invention is a prestressed anchor cable for rock reinforcement Figure 5 An exploded schematic diagram of the structure shown;

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

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

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

[0051] Fig.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] Fig.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, connection hole 211, outer assembly ring body 22, plug hole 221, sliding hole 222, connecting frame 23, grouting cavity 24, annular hole 25, adapter ring 3, assembly hole 31, grout storage component 4, outer assembly cylinder 41, water outlet hole 411, inner assembly cylinder 42, grout outlet hole 421, threaded hole 422, grout 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 boss 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, supporting plate 91, first limiting plate 911, second limiting 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 described embodiments 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 creative work 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 comprises an anchor cable rod 11, an assembly body 2, a switching ring 3, a slurry storage component 4, a slurry outlet component 5 and an assembly nut 10, wherein the assembly body 2 comprises an inner assembly column 21, an outer assembly ring body 22 and a connecting frame 23, wherein the anchor cable rod 11 is inserted into the inside of an anchor hole opened on the underwater rock mass, the anchor cable 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 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 cable rod is provided 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 grouting cavity 24 and an annular hole 25 are formed between the inner assembly column 21 and the outer assembly ring body 22, the grouting cavity 24 is communicated with the annular hole 25, the grouting 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 grout storage component 4 is arranged on the adapter ring 3 for storing mortar; the slurry outlet 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 a 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 a 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 respectively aligned with the two openings of the annular hole 25, 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 connection 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, the adapter ring 3 is adjusted to rotate 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 slurry coating cavity 24 and covers the anchor hole, thereby completing the slurry coating 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 influence 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 from 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 outlet 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 fixedly connected to the inner assembly cylinder 42, the inner assembly cylinder 42 is used to store mortar, and the two ends of the inner assembly cylinder 42 are respectively provided with a slurry outlet hole 421 and a threaded hole 422, and one end of the inner assembly cylinder 42 with the slurry outlet 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 the mortar stored in the inner assembly cylinder 42 needs to be squeezed out, 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 formed 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 formed between the upper end surface and the lower end surface of the outer assembly sleeve 41.

[0062] This design allows the outer assembly sleeve 41 to be detachably connected to the adapter ring 3. Specifically, when installing the outer assembly sleeve 41, the outer assembly sleeve 41 is inserted into the inside of the assembly hole 31 and rotated. Under the action of the threaded connection, the outer assembly sleeve 41 gradually rotates into the inside of the assembly hole 31 and squeezes the water in the assembly hole 31 out of the inner side of the water outlet 411. In this design, when the assembly body 2 is assembled to the anchor rod 11, the outer assembly sleeve 41 can be temporarily not assembled, reducing the weight of the assembly body 2 for easy assembly.

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

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

[0065] Specifically, when the top cover 61 is covered on the outer assembly tube 41, the connecting tooth column 62 is automatically inserted into the inner side of the regulating rod 51, and the positioning protrusion 63 is inserted into the interior of the positioning insertion hole 611. Under the restriction of the positioning protrusion 63, the positioning processing of the covering position of the top cover 61 is completed. Specifically, by adjusting the rotation of the connecting tooth column 62, the movement adjustment processing of the position of the grouting plug 52 can be completed.

[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 meshed 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 covered on the outer assembly cylinder 41, the plug-in column 72 is plugged into the inside of the plug-in 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 on the outside of the regulating gear 64 and meshes with the regulating gear 64. With this design, specifically when the adjusting adapter ring 3 rotates along the annular hole 25 at a uniform speed, the regulating gear 64 synchronously follows the adapter ring 3 to rotate. Under the meshing action of the ring gear 71, the regulating gear 64 rotates synchronously at a uniform speed while following the rotation of the adapter ring 3. The regulating gear 64 drives the connecting tooth column 62 to rotate, and the connecting tooth column 62 drives the regulating rod 51 meshed therewith to rotate. The regulating 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 extrude the mortar stored in the inner assembly cylinder 42, so that the mortar can be uniformly extruded into the inside of the grouting cavity 24 to increase the uniformity of the grouting.

[0068] Preferably, a handle 65 is also 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 simultaneously passes through the inner side of the connecting hole 821. 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, and the lower clamping ring 84 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 clamped by the clamping nut 83, the outer plate 612 is clamped 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 cavity 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 locate the sliding position of the support plate 91.

[0074] Specifically, when the outer assembly tube 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 tube 41 by supporting the outer assembly tube 41 at the bottom. Specifically, after the connection of the outer assembly tube 41 is completed, the slurry outlet hole 421 can be connected to the slurry coating chamber 24 by opening the positioning lock 92 and pulling the supporting plate 91, so as to facilitate the slurry coating process.

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

[0076] As a preferred embodiment, the support plate 91 includes a first limit plate 911 and a second limit plate 912. The first limit plate 911 is located on the outside of the outer assembly ring body 22, and the second limit plate 912 is located inside the slurry coating chamber 24. The first limit plate 911 and the second limit 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 limit plate 912 can be pressed against the cavity wall of the slurry coating cavity 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 limit plate 911 can be pressed 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 limit plate 911.

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

[0079] S1, sleeve the inner assembly column 21 onto the anchor rod 11, and make the anchor rod 11 pass 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 on 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 hole 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, and the extruded mortar naturally falls into the inside of the mortar coating cavity 24 and covers the anchor hole, completing the mortar coating process.

[0083] Specifically, in this embodiment, the mortar to be applied 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 tube 41. At this time, the plug-in column 72 is inserted into the inner side of the regulating rod 51 and meshed with the regulating rod 51. The top cover 61 cannot rotate under the restriction of the positioning boss 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 hole 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 hole 421 to the inside of the slurry coating cavity 24. In this step, the movement speed 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 protection scope of the present invention.

Claims

1. A prestressed anchor cable for rock reinforcement, characterized in that: The invention comprises an anchor rod (11), an assembly (2), an adapter 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 inside 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 connected to 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) comprises an outer assembly tube (41) and an inner assembly tube (42), and the slurry outlet component (5) comprises 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. Both ends of the inner assembly cylinder (42) are respectively provided with a mortar outlet hole (421) and a threaded hole (422). 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 disposed inside the inner assembly cylinder (42) and is sealingly 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 threads, 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 hole (411); a positioning protrusion (63) is arranged at the end of the outer assembly cylinder (41), and a positioning socket (611) for the positioning protrusion (63) to be plugged into is provided on the top cover (61); The connecting tooth column (62) is rotatably connected to the top cover (61), a rack is formed on the outer surface of the connecting tooth column (62), a connecting tooth hole (511) is opened 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 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 body (22); The upper clamping ring (82) is arranged on the plug-in column (72), and a connecting hole (821) is provided on the upper clamping ring (82) for the threaded rod (81) to pass through; The clamping nut (83) is threadedly connected to the threaded rod (81) and is used to press the upper clamping ring (82) toward a 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) which is connected to the slurry coating cavity (24), and the supporting plate (91) is slidably arranged inside 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 on the outside of the outer assembly ring body (22), and the second limiting plate (912) is located inside the slurry coating chamber (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), and allow the anchor rod (11) to pass 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) on the threaded section (111) and rotate it until the assembly nut (10) presses against the assembly body (2), and at this time, the slurry coating cavity (24) covers the hole 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 component (4) through the mortar outlet component (5). The squeezed mortar naturally falls into the mortar coating cavity (24) and covers the anchor hole, thereby completing the mortar coating process.

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