Self-drilling anchor cable and construction method

Abstract

The invention relates to the field of anchoring equipment, in particular to a self-drilling anchor cable and a construction method. The self-drilling anchor cable comprises a cable assembly, a drill bit and hydraulic blades, the cable assembly is provided with a medium channel, the medium channel extends in the length direction of the cable assembly, the drill bit is rotatably connected to the first end of the cable assembly, the first end of the drill bit or the cable assembly is provided with a medium outlet, and the medium outlet is communicated with the medium channel and used for discharging media in the medium channel. The hydraulic blades are arranged in the medium channel and connected with the drill bit, and the hydraulic blades can be driven by flowing media in the medium channel to rotate so as to drive the drill bit to rotate. According to the self-drilling type anchor cable, drilling can be carried out, anchoring is carried out after drilling, the self-drilling type anchor cable does not need to be taken out of a drilled hole, and therefore the self-drilling type anchor cable has simple construction procedures, and anchor cable installation can be smoothly achieved under the condition of hole collapse.

Description

Technical Field

[0001] The present invention relates to the field of anchoring equipment, and particularly to a self-drilling anchor cable and a construction method thereof. Background Art

[0002] The anchor cable has the characteristics of strong bearing capacity and large support range, and is widely used in geotechnical engineering such as slopes, foundation pits, tunnels, and coal mine roadways. It is an important means of strongly supporting the control of surrounding rock mass deformation. In related technologies, the construction of the anchor cable needs to perform steps such as drilling holes, disassembling drill pipes, installing anchoring agents, conveying cable bodies, stirring and anchoring, and tensioning in sequence. The process is relatively complex, and it is difficult to achieve automation due to manual operation. In addition, under the conditions of soft soil layers or broken surrounding rocks, local collapse of the drilling hole is likely to occur during the process of disassembling the drill pipe, resulting in the failure of the anchor cable to be successfully installed. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems in the related technologies to some extent.

[0004] To this end, the present invention proposes a self-drilling anchor cable.

[0005] The present invention also proposes a construction method based on the self-drilling anchor cable of the present invention.

[0006] The self-drilling anchor cable of the present invention includes: A cable assembly, a drill bit, and a hydraulic blade. The cable assembly is provided with a medium channel, and the medium channel extends along the length direction of the cable assembly. The drill bit is rotatably connected to the first end of the cable assembly. A medium outlet is provided at the drill bit or the first end of the cable assembly, and the medium outlet is communicated with the medium channel for discharging the medium in the medium channel. The hydraulic blade is arranged in the medium channel and is connected to the drill bit. The hydraulic blade can be driven by the flowing medium in the medium channel to rotate, thereby driving the drill bit to rotate.

[0007] Further, the hydraulic blade is spiral and extends along the length direction of the cable assembly.

[0008] Further, the medium outlet axially penetrates the drill bit.

[0009] Further, the drill bit includes a cutter head, a rotating shaft, and a connecting seat arranged in sequence along the axial direction of the drill bit. An axial hole is provided at the first end of the cable assembly, the rotating shaft is rotatably arranged in the axial hole, and the connecting seat is located in the medium channel and is connected to the hydraulic blade.

[0010] Further, the cable assembly includes a sleeve and a cable body connected to each other. The sleeve is provided with a part of the medium channel, and the cable body is provided with another part of the medium channel. The sleeve is provided with the drill bit and the hydraulic blade.

[0011] Further, the drill bit includes a cutter head, and the outer diameter of the sleeve is equal to the maximum outer diameter of the cutter head.

[0012] Further, the sleeve is a circular sleeve, and a groove is provided on the outer peripheral surface of the sleeve. The groove penetrates the sleeve along the axial direction of the sleeve, and the groove is used for the medium discharged from the medium outlet to pass through; or The sleeve is a polygonal sleeve.

[0013] Further, the self-drilling anchor cable further includes a joint, and the joint is detachably connected to the second end of the cable assembly. The joint is used for supplying the medium to the medium channel.

[0014] Further, the medium includes high-pressure water. The joint is provided with a communicating inner cavity and a high-pressure water interface. The inner cavity of the joint is used for communicating with the medium channel, and the high-pressure water interface is used for supplying the high-pressure water into the inner cavity of the joint.

[0015] Further, the pressure of the high-pressure water is greater than or equal to 15 MPa.

[0016] Further, the self-drilling anchor cable further includes a mixing member. The medium includes an anchoring agent. The joint is provided with a communicating inner cavity and a raw material interface. The inner cavity of the joint is used for communicating with the medium channel. The raw material interface is at least two corresponding to the raw materials of the anchoring agent. The mixing member is arranged in the inner cavity of the joint and is oppositely arranged with at least two raw material interfaces, and is used for mixing the raw materials supplied into the inner cavity of the joint by at least two raw material interfaces, so as to form the anchoring agent.

[0017] Further, the mixing member is a spiral blade extending along the direction towards the medium channel. The mixing member includes an alternately arranged first section and a second section, and the spiral directions of the first section and the second section are opposite.

[0018] In the self-drilling anchor cable of the present invention, the medium moves along the medium channel in the cable assembly and is discharged from the medium outlet. During the flowing process, the medium passes through the hydraulic blade and drives the hydraulic blade to rotate. Thus, the hydraulic blade drives the drill bit located at the first end of the cable assembly to rotate, so as to be able to drill a hole. Therefore, the self-drilling anchor cable of the present invention can drill a hole and perform anchoring after drilling, without taking out the self-drilling anchor cable from the drilled hole. Thus, it has a simple construction process and can smoothly realize the installation of the anchor cable in the case of hole collapse.

[0019] The construction method of the self - drilling anchor cable according to any one of the above - mentioned inventions includes: S1. Supply high - pressure water into the medium channel, drive the hydraulic blades to rotate through the high - pressure water to drive the drill bit to rotate, and at the same time drive the drill bit and the cable assembly to feed through the high - pressure water, so as to drill a hole; S2. After drilling to the specified depth, supply the anchoring agent into the medium channel, and the anchoring agent is discharged from the medium outlet to at least between the cable assembly and the inner wall of the drill hole, so as to anchor the cable assembly; S3. Tension the cable assembly.

[0020] With the construction method of the self - drilling anchor cable of the present invention, the self - drilling anchor cable of the present invention can drill a hole and perform anchoring after drilling, without taking the self - drilling anchor cable out of the drill hole and then performing tensioning. Therefore, it has simple construction procedures and can realize automatic construction. Description of the Drawings

[0021] Figure 1 is a schematic diagram of the self - drilling anchor cable according to an embodiment of the present invention; Figure 2 is Figure 1 an enlarged schematic diagram of the sleeve, the cutter head and the hydraulic blades in Figure 3 is Figure 1 an enlarged schematic diagram of the joint and the mixing part in

[0022] Reference Signs: 1. Cable assembly; 11. Axial hole; 12. Sleeve; 13. Cable body; 2. Drill bit; 21. Cutter head; 22. Rotating shaft; 23. Connecting seat; 3. Hydraulic blade; 4. Medium channel; 5. Medium outlet; 6. Joint; 61. High - pressure water interface; 62. Raw material interface; 7. Mixing part. Detailed Embodiments

[0023] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0024] The following refers to Figures 1 - 3 to describe the self - drilling anchor cable and the construction method according to an embodiment of the present invention.

[0025] As Figures 1 - 3 shown, the self - drilling anchor cable according to an embodiment of the present invention includes a cable assembly 1, a drill bit 2 and a hydraulic blade 3.

[0026] The cable assembly 1 is provided with a medium channel 4, and the medium channel 4 extends along the length direction of the cable assembly 1. For example, as Figure 1As shown, the cable assembly 1 extends in the left - right direction, and a medium channel 4 extending in the left - right direction is provided inside the cable assembly 1.

[0027] The drill bit 2 is rotatably connected to the first end of the cable assembly 1. A medium outlet 5 is provided at the drill bit 2 or the first end of the cable assembly 1. The medium outlet 5 communicates with the medium channel 4 and is used to discharge the medium in the medium channel 4. For example, as Figure 1 and Figure 2 shown, the drill bit 2 is rotatably provided at the left end of the cable assembly 1. A medium outlet 5 is provided at the drill bit 2 or the left end of the cable assembly 1. The medium outlet 5 communicates with the medium channel 4 to discharge the medium in the medium channel 4, thereby ensuring that the medium can flow along the medium channel 4.

[0028] The hydraulic vane 3 is arranged in the medium channel 4 and is connected to the drill bit 2. The hydraulic vane 3 can be rotated by the medium flowing in the medium channel 4, thereby driving the drill bit 2 to rotate. For example, as Figure 1 and Figure 2 shown, the right end of the drill bit 2 is connected to the hydraulic vane 3. The hydraulic vane 3 is located in the medium channel 4. Along the flow direction of the medium in the medium channel 4, all or part of the hydraulic vane 3 is located upstream of the medium outlet 5. The medium in the medium channel 4 contacts the hydraulic vane 3 during the process of flowing towards the medium outlet 5 to drive the hydraulic vane 3 to rotate, so that the hydraulic vane 3 drives the drill bit 2 to rotate.

[0029] For the self - drilling anchor cable according to the embodiment of the present invention, the medium moves along the medium channel in the cable assembly and is discharged from the medium outlet. The medium drives the hydraulic vane to rotate during the flowing process, so that the hydraulic vane drives the drill bit located at the first end of the cable assembly to rotate for drilling. Therefore, the self - drilling anchor cable according to the embodiment of the present invention can drill holes and perform anchoring after drilling without taking the self - drilling anchor cable out of the drilled hole, thus having a simple construction process and being able to successfully install the anchor cable in the case of hole collapse.

[0030] In some embodiments, the hydraulic vane 3 is spiral and extends along the length direction of the cable assembly 1.

[0031] As Figure 1 and Figure 2 shown, the hydraulic vane 3 is spiral and extends in the left - right direction and is arranged around the left - right direction, so that the medium flowing in the medium channel 4 can drive the hydraulic vane 3 to rotate around the axis of the hydraulic vane 3 (such as Figure 1 the left - right direction shown).

[0032] In some embodiments, the medium outlet 5 penetrates through the drill bit 2 along the axial direction of the drill bit 2.

[0033] As Figure 1 and Figure 2As shown, the medium outlet 5 penetrates the drill bit 2 in the left - right direction. On the one hand, it facilitates the feeding of the self - drilling anchor cable during drilling. On the other hand, the medium discharged from the medium outlet 5 reduces friction and cools the drill bit 2 during drilling. On the third hand, the medium discharged from the medium outlet 5 can carry out the slag and stones generated during drilling, so as to achieve the effect of discharging slag.

[0034] In some embodiments, the drill bit 2 includes a cutter head 21, a rotating shaft 22, and a connecting seat 23 arranged in sequence along the axial direction of the drill bit 2. The first end of the cable assembly 1 is provided with a shaft hole 11, the rotating shaft 22 is rotatably arranged in the shaft hole 11, and the connecting seat 23 is located in the medium channel 4 and is connected to the hydraulic blade 3.

[0035] As Figure 1 and Figure 2 As shown, the drill bit 2 includes a cutter head 21, a rotating shaft 22, and a connecting seat 23 connected in sequence from left to right. The left end of the cable assembly 1 is provided with a shaft hole 11 extending in the left - right direction and communicating with the medium channel 4. The rotating shaft 22 is arranged in the shaft hole 11 and can rotate relative to the shaft hole 11 around the left - right direction. The cutter head 21 is located outside the cable assembly 1 for drilling, the connecting seat 23 is located in the medium channel 4 and is provided with a hydraulic blade 3, and the medium outlet 5 penetrates the cutter head 21, the rotating shaft 22, and the connecting seat 23 in sequence along the left - right direction. Thus, the drill bit 2 is rotatably arranged at the left end of the cable assembly 1 and can drill under the drive of the hydraulic blade 3.

[0036] The cutter head 21 is preferably but not limited to a two - wing cutter head.

[0037] In some embodiments, the cable assembly 1 includes a sleeve 12 and a cable body 13 connected to each other. The sleeve 12 is provided with a part of the medium channel 4, the cable body 13 is provided with another part of the medium channel 4, and the sleeve 12 is provided with the drill bit 2 and the hydraulic blade 3.

[0038] As Figure 1 and Figure 2 As shown, the cable assembly 1 includes a sleeve 12 and a cable body 13 connected in sequence from left to right. The inner cavity of the sleeve 12 serves as a part of the medium channel 4, and the inside of the cable body 13 is hollow to form another part of the medium channel 4.

[0039] The left end of the sleeve 12 is provided with a shaft hole 11, the rotating shaft 22 is arranged in the shaft hole 11 and can rotate relative to the shaft hole 11 around the left - right direction. Thus, the drill bit 2 is rotatably arranged at the left end of the sleeve 12 through the shaft hole 11. The cutter head 21 is located outside the left side of the sleeve 12 for drilling, and the connecting seat 23 is located in the inner cavity of the sleeve 12 and is connected to the hydraulic blade 3 located in the inner cavity of the sleeve 12.

[0040] Since the sleeve 12 is a rigid object, disposing the drill bit 2 and the hydraulic vane 3 on the sleeve 12 can prevent the bending deformation of the cable assembly 1 from causing the drill bit 2 to jam and the hydraulic vane 3 to be damaged, ensuring the smooth rotation of the drill bit 2 and the hydraulic vane 3, and thus ensuring the smooth drilling of the self-drilling anchor cable.

[0041] In some embodiments, the drill bit 2 includes a cutter head 21, and the outer diameter of the sleeve 12 is equal to the maximum outer diameter of the cutter head 21.

[0042] As Figure 1 and Figure 2 shown, the outer diameter of the sleeve 12 is constant in the left-right direction, and the maximum outer diameter of the cutter head 21 is the same as the outer diameter of the sleeve 12.

[0043] During the drilling process, the diameter of the borehole drilled by the cutter head 21 is substantially the same as the outer diameter of the sleeve 12. The sleeve 12 abuts against the inside of the borehole and moves along the borehole, thereby driving the cable body 13 to move. At the same time, since the sleeve 12 is a rigid object, the sleeve 12 abutting against the inside of the borehole can ensure the moving direction of the sleeve 12, and thus ensure the drilling direction of the cutter head 21, avoiding the bending deformation of the cable body 13 from affecting the drilling direction of the cutter head 21.

[0044] In some embodiments, the sleeve 12 is a circular sleeve, and a groove is provided on the outer peripheral surface of the sleeve 12. The groove penetrates the sleeve 12 along the axial direction of the sleeve 12, and the groove is for the medium discharged from the medium outlet 5 to pass through. Or the sleeve 12 is a polygonal sleeve.

[0045] As Figure 1 and Figure 2 shown, the sleeve 12 can be a circular sleeve. In other words, the cross-section of the sleeve 12 is circular, and the diameter of the circle is the outer diameter of the sleeve 12. The outer peripheral surface of the sleeve 12 abuts against the inner peripheral surface of the borehole, thereby ensuring the drilling direction of the cutter head 21.

[0046] A groove is provided on the outer peripheral surface of the sleeve 12, and the groove penetrates the sleeve 12 in the left-right direction. The medium discharged from the medium outlet 5 flows back in the borehole. In other words, it flows from the inside to the outside of the borehole (such as Figure 1 the direction from left to right shown), and when the medium passes by the outside of the sleeve 12, the medium flows from left to right along the groove, thereby ensuring the smooth flow of the medium in the borehole and avoiding excessive resistance to the feeding self-drilling anchor cable.

[0047] The sleeve 12 can also be a polygonal sleeve. In other words, the cross-section of the sleeve 12 is polygonal, and the diameter of the circumscribed circle of the polygon is the outer diameter of the sleeve 12. The sleeve 12 has edges corresponding to the angles of the polygon and side wall surfaces corresponding to the sides of the polygon. The edges of the sleeve 12 abut against the inner peripheral surface of the borehole, thereby ensuring the drilling direction of the cutter head 21.

[0048] An interval space for the medium to pass through is formed between the side wall surface of the sleeve 12 and the inner peripheral surface of the drill hole. The medium discharged from the medium outlet 5 flows back in the drill hole, that is, it flows along the drill hole from the inside to the outside (such as Figure 1 shown in the direction from left to right), when the medium passes by the outside of the sleeve 12, the medium flows from left to right along the interval space, so as to ensure the smooth flow of the medium in the drill hole and avoid excessive resistance to the feed self-drilling anchor cable.

[0049] Preferably, the sleeve 12 is a circular sleeve, and the outer peripheral surface of the sleeve 12 is provided with grooves.

[0050] In some embodiments, the self-drilling anchor cable of the embodiment of the present invention further includes a joint 6, the joint 6 is detachably connected to the second end of the cable assembly 1, and the joint 6 is used to supply the medium to the medium channel 4.

[0051] As Figure 1 and Figure 3 shown, a detachable joint 6 is provided at the right end of the cable body 13, and the joint 6 can be connected to the pipeline and / or pump for supplying the medium, so as to supply the medium to the medium channel 4 through the joint 6. After the processes that require the supply of the medium, such as the drilling process and the anchoring process, the joint 6 is removed from the cable body 13, so as to facilitate the next process of the self-drilling anchor cable, such as the tensioning process.

[0052] In some embodiments, the medium includes high-pressure water, the joint 6 is provided with a communicating inner cavity and a high-pressure water interface 61, the inner cavity of the joint 6 is used to communicate with the medium channel 4, and the high-pressure water interface 61 is used to supply high-pressure water into the inner cavity of the joint 6.

[0053] As Figure 1 and Figure 3 shown, the joint 6 is provided with an inner cavity extending in the left-right direction, the left end of the joint 6 is used to be detachably connected to the right end of the cable body 13, so that the inner cavity of the joint 6 communicates with the medium channel 4. The right end of the joint 6 is provided with a high-pressure water interface 61 communicating with the inner cavity of the joint 6, and the high-pressure water interface 61 can be connected to the pipeline and / or pump for supplying high-pressure water, so as to supply high-pressure water into the medium channel 4 through the inner cavity of the joint 6. The high-pressure water drives the hydraulic blades 3 and the drill bit 2 to rotate, and at the same time, the high-pressure water pushes the sleeve 12 and the drill bit 2 to feed through the pressure on the sleeve 12 and the drill bit 2, so that the self-drilling anchor cable can drill holes. During the drilling process, the high-pressure water is discharged from the medium outlet 5 into the drill hole and carries the slag in the drill hole to flow from the inside to the outside of the drill hole to realize slag discharge.

[0054] Preferably, the pressure of the high-pressure water is greater than or equal to 15 MPa to be able to push the sleeve 12 and the drill bit 2 to feed.

[0055] In some embodiments, the self-drilling anchor cable of the embodiments of the present invention further includes a mixing member 7. The medium includes an anchoring agent. The joint 6 is provided with a communicating inner cavity and a raw material interface 62. The inner cavity of the joint 6 is used to communicate with the medium passage 4. The raw material interface 62 is at least two corresponding to the raw materials of the anchoring agent. The mixing member 7 is arranged in the inner cavity of the joint 6 and is oppositely arranged with at least two raw material interfaces 62 for mixing the raw materials fed into the inner cavity of the joint 6 through at least two raw material interfaces 62, so as to form an anchoring agent.

[0056] As Figure 1 and Figure 3 shown, the joint 6 is provided with an inner cavity extending in the left-right direction. The left end of the joint 6 is used to be detachably connected to the right end of the cable body 13, so that the inner cavity of the joint 6 communicates with the medium passage 4. The mixing member 7 is arranged in the inner cavity of the joint 6. The mixing member 7 preferably but not limited to extends in the left-right direction.

[0057] At least two raw material interfaces 62 are provided on the side end of the joint 6, preferably but not limited to two. The two raw material interfaces 62 are arranged at intervals in the left-right direction and are oppositely arranged with the mixing member 7. The raw material interface 62 is connected to the pipeline and / or pump for supplying the corresponding raw materials of the anchoring agent, so that the raw materials of the anchoring agent enter the inner cavity of the joint 6 through the corresponding raw material interfaces 62. After the two raw materials of the anchoring agent enter the inner cavity of the joint 6 through the corresponding raw material interfaces 62, they contact the mixing member 7 and are fully mixed by the mixing member 7, so as to form an anchoring agent. The formed anchoring agent enters the medium passage 4 from the inner cavity of the joint 6, and then is discharged into the drill hole through the medium outlet 5 and flows from the inside to the outside along the drill hole, so as to anchor the self-drilling anchor cable.

[0058] It can be understood that the joint 6 can be set to only one. This joint 6 is simultaneously provided with a high-pressure water interface 61, a raw material interface 62 and a mixing member 7. The joint 6 can also be set to two. One of the joints 6 is provided with a high-pressure water interface 61 for supplying high-pressure water, and the other joint 6 is provided with a raw material interface 62 and a mixing member 7 for supplying an anchoring agent. Preferably, the joint 6 is set to one.

[0059] In some embodiments, the mixing member 7 is a spiral blade extending in the direction towards the medium passage 4. The mixing member 7 includes alternately arranged first sections and second sections, and the spiral directions of the first sections and the second sections are opposite.

[0060] As Figure 3 shown, the mixing member 7 is a spiral blade extending in the left-right direction and arranged around the left-right direction. The mixing member 7 includes first sections and second sections alternately arranged in the left-right direction. The spiral directions of the first sections and the second sections are opposite. In other words, one of the first sections and the second sections is a positive rotation, and the other is a reverse rotation. Both the first sections and the second sections are set to be several.

[0061] After the two raw materials enter the inner cavity of the joint 6 and flow leftward, the two raw materials are fully mixed by the first and second sections with opposite rotation directions during the flowing process to form the anchoring agent.

[0062] It can be understood that in some other embodiments, the mixing member can also be a stirrer.

[0063] The embodiment of the present invention also provides a construction method of the self-drilling anchor cable based on the embodiment of the present invention, including: S1. Supply high-pressure water to the medium channel 4, drive the hydraulic blade 3 to rotate by the high-pressure water to drive the drill bit 2 to rotate, and at the same time drive the drill bit 2 and the cable assembly 1 to feed by the high-pressure water, so as to drill a hole.

[0064] Specifically, supply high-pressure water to the medium channel 4 through the joint 6, the high-pressure water flows through the hydraulic blade 3 and drives the hydraulic blade 3 to rotate. At the same time, the pressure of the high-pressure water on the sleeve 12 and the drill bit 2 pushes the sleeve 12 and the drill bit 2 to feed. The high-pressure water is discharged from the medium outlet 5 into the drill hole and carries the slag in the drill hole to flow from the inside to the outside of the drill hole along the drill hole.

[0065] S2. After drilling to the specified depth, supply the anchoring agent to the medium channel 4, and the anchoring agent is discharged from the medium outlet 5 to at least between the cable assembly 1 and the inner wall of the drill hole, so as to anchor the cable assembly 1.

[0066] Specifically, after drilling to the specified depth, stop supplying high-pressure water to the joint 6, start supplying the raw materials of the anchoring agent to the joint 6, mix the raw materials through the joint 6 and the mixing member 7 to form the anchoring agent and supply the anchoring agent to the medium channel 4. The anchoring agent is discharged from the medium outlet 5 to between both the drill bit 2 and the cable assembly 1 and the inner wall of the drill hole, and flows from the inside to the outside of the drill hole. After the anchoring agent overflows from the drill hole, stop supplying the anchoring agent and let it stand for a period of time, so that the anchoring agent anchors the cable assembly 1 and the drill bit 2 in the drill hole.

[0067] S3. Tension the cable assembly 1.

[0068] Specifically, remove the joint 6 from the right end of the cable assembly 1, connect the right end of the cable assembly 1 through the tensioning device and tension the cable assembly 1.

[0069] The construction method of the self-drilling anchor cable of the embodiment of the present invention can drill a hole through the self-drilling anchor cable of the embodiment of the present invention, and can be anchored after drilling, and then tensioned. During the processes of drilling and anchoring, corresponding media are supplied to the medium channel, and there is no need to take out the self-drilling anchor cable from the drill hole, so that the construction process is simple and automatic construction can be realized.

[0070] In the description of the present invention, it should be understood that the orientation or positional relationships indicated by the terms "left", "right", "inner", "outer", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation on the present invention.

[0071] In addition, the terms "first" and "second" are only used for distinction and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0072] In the present invention, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "joined", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0073] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may mean that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0074] In the present invention, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples.

[0075] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A self-drilling anchor cable, characterized in that: include: A cable assembly (1), a drill bit (2) and a hydraulic blade (3), wherein the cable assembly (1) is provided with a medium channel (4), wherein the medium channel (4) extends along the length direction of the cable assembly (1), wherein the drill bit (2) is rotatably connected to the first end of the cable assembly (1), wherein the drill bit (2) or the first end of the cable assembly (1) is provided with a medium outlet (5), wherein the medium outlet (5) is communicated with the medium channel (4) and is used to discharge the medium in the medium channel (4), wherein the hydraulic blade (3) is arranged in the medium channel (4) and is connected to the drill bit (2), wherein the hydraulic blade (3) can rotate under the drive of the medium flowing in the medium channel (4), thereby driving the drill bit (2) to rotate.

2. The self-drilling anchor cable according to claim 1, characterized in that: The hydraulic blade (3) is in a spiral shape extending along the length direction of the cable assembly (1).

3. The self-drilling anchor cable according to claim 1, characterized in that: The medium outlet (5) penetrates the drill bit (2) along the axial direction of the drill bit (2); and / or The drill bit (2) comprises a cutter head (21), a rotating shaft (22) and a connecting seat (23) which are arranged in sequence along the axial direction of the drill bit (2); a shaft hole (11) is provided at the first end of the cable assembly (1); the rotating shaft (22) is rotatably arranged in the shaft hole (11); and the connecting seat (23) is located in the medium channel (4) and is connected to the hydraulic blade (3).

4. The self-drilling anchor cable according to claim 1, characterized in that: The cable assembly (1) comprises a sleeve (12) and a cable body (13) connected to each other; the sleeve (12) is provided with a portion of the medium channel (4); the cable body (13) is provided with another portion of the medium channel (4); the sleeve (12) is provided with the drill bit (2) and the hydraulic blade (3); the drill bit (2) comprises a cutter head (21); and the outer diameter of the sleeve (12) is equal to the maximum outer diameter of the cutter head (21).

5. The self-drilling anchor cable according to claim 4, characterized in that: The sleeve (12) is a circular sleeve, and a groove is provided on the outer peripheral surface of the sleeve (12), the groove penetrates the sleeve (12) along the axial direction of the sleeve (12), and the groove is used for the medium discharged from the medium outlet (5) to pass through; or The sleeve (12) is a polygonal sleeve.

6. The self-drilling anchor cable according to claim 1, characterized in that: It also comprises a joint (6), the joint (6) being detachably connected to the second end of the cable assembly (1), and the joint (6) being used to supply the medium to the medium channel (4).

7. The self-drilling anchor cable according to claim 6, characterized in that: The medium comprises high-pressure water, and the joint (6) is provided with a communicating inner cavity and a high-pressure water interface (61); the inner cavity of the joint (6) is used to communicate with the medium channel (4), and the high-pressure water interface (61) is used to supply the high-pressure water into the inner cavity of the joint (6).

8. The self-drilling anchor cable according to claim 7, characterized in that: The pressure of the high-pressure water is greater than or equal to 15 MPa.

9. The self-drilling anchor cable according to claim 6, characterized in that: The invention also comprises a mixing piece (7), wherein the medium comprises an anchoring agent, and the joint (6) is provided with a connected inner cavity and a raw material interface (62), wherein the inner cavity of the joint (6) is used to communicate with the medium channel (4), and the raw material interface (62) is at least two and is arranged corresponding to the raw material of the anchoring agent, and the mixing piece (7) is arranged in the inner cavity of the joint (6) and is arranged opposite to the at least two raw material interfaces (62), and is used to mix the raw materials supplied from the at least two raw material interfaces (62) into the inner cavity of the joint (6), thereby forming the anchoring agent.

10. The self-drilling anchor cable according to claim 9, characterized in that: The mixing element (7) is a spiral blade extending in a direction toward the medium channel (4), and the mixing element (7) comprises a first section and a second section that are alternately arranged, and the first section and the second section have opposite rotation directions.

11. A construction method of a self-drilling anchor cable according to any one of claims 1 to 10, characterized in that: include: S1, supplying high-pressure water to the medium channel (4), driving the hydraulic blade (3) to rotate by the high-pressure water to drive the drill bit (2) to rotate, and at the same time driving the drill bit (2) and the cable assembly (1) to feed by the high-pressure water, thereby drilling; S2, after drilling to a specified depth, supplying an anchoring agent into the medium channel (4), and discharging the anchoring agent from the medium outlet (5) to at least between the cable assembly (1) and the inner wall of the drilled hole, thereby anchoring the cable assembly (1); S3. tensioning the cable assembly (1).

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