Self-drilling anchor cable and construction method

Abstract

The present invention relates to the field of anchoring equipment, and specifically provides a self-drilling anchor cable and a construction method. The self-drilling anchor cable includes a cable assembly, a drill bit, and a hydraulic blade. The cable assembly is provided with a medium channel, which extends along the length of the cable assembly. The drill bit is rotatably connected to the first end of the cable assembly. The drill bit or the first end of the cable assembly is provided with a medium outlet, which is connected to the medium channel and is used to discharge the medium in the medium channel. The hydraulic blade is provided in the medium channel and connected to the drill bit. The hydraulic blade can rotate under the drive of the medium flowing in the medium channel, thereby driving the drill bit to rotate. The self-drilling anchor cable of the present invention can be used for drilling and anchoring after drilling. There is no need to remove the self-drilling anchor cable from the drill hole, thereby having a simple construction process and being able to smoothly achieve anchor cable installation in the event of a hole collapse.

Description

Technical Field

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

[0002] Cable anchors, with their strong bearing capacity and wide support range, are widely used in geotechnical engineering projects such as slopes, foundation pits, tunnels, and coal mine tunnels. They are an important and powerful support method for controlling deformation of surrounding rock masses. Conventional cable anchor construction requires a series of steps, including drilling, drill rod removal, anchoring agent installation, cable delivery, anchor mixing, and tensioning. This process is complex and requires manual operation, making automation difficult. Furthermore, in soft soil or broken surrounding rock, the drill rod removal process can easily lead to partial collapse of the drill hole, preventing the successful installation of the cable anchor. Summary of the Invention

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

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

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

[0006] The self-drilling anchor cable of the present invention comprises:

[0007] A cable assembly, a drill bit and a hydraulic blade, wherein the cable assembly is provided with a medium channel, the medium channel extending along the length direction of the cable assembly, the drill bit is rotatably connected to the first end of the cable assembly, the drill bit or the first end of the cable assembly is provided with a medium outlet, the medium outlet is communicated with the medium channel and is used to discharge the medium in the medium channel, the hydraulic blade is arranged in the medium channel and connected to the drill bit, and the hydraulic blade can rotate under the drive of the medium flowing in the medium channel, thereby driving the drill bit to rotate.

[0008] Furthermore, the hydraulic blades are spiral-shaped and extend along the length direction of the cable assembly.

[0009] Furthermore, the medium outlet passes through the drill bit along the axial direction of the drill bit.

[0010] Furthermore, 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. The first end of the cable assembly is provided with an axial hole, the rotating shaft is rotatably arranged in the axial hole, and the connecting seat is located in the medium channel and connected to the hydraulic blade.

[0011] Furthermore, the cable assembly includes a connected sleeve and a cable body, the sleeve is provided with a portion of the medium channel, the cable body is provided with another portion of the medium channel, and the sleeve is provided with the drill bit and the hydraulic blade.

[0012] Furthermore, 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.

[0013] Furthermore, the sleeve is a circular sleeve, and a groove is provided on the outer circumference of the sleeve, the groove passes through 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

[0014] The sleeve is a polygonal sleeve.

[0015] Furthermore, the self-drilling anchor cable further comprises a connector, which is detachably connected to the second end of the cable assembly, and the connector is used to supply the medium to the medium channel.

[0016] Furthermore, the medium includes high-pressure water, and the joint is provided with a communicating inner cavity and a high-pressure water interface, the inner cavity of the joint is used to communicate with the medium channel, and the high-pressure water interface is used to supply the high-pressure water into the inner cavity of the joint.

[0017] Furthermore, the pressure of the high-pressure water is greater than or equal to 15 MPa.

[0018] Furthermore, the self-drilling anchor cable also includes a mixing piece, the medium includes an anchor, the joint is provided with a connected inner cavity and a raw material interface, the inner cavity of the joint is used to communicate with the medium channel, the raw material interface is at least two corresponding to the raw material of the anchor, the mixing piece is provided in the inner cavity of the joint, and is arranged opposite to at least two of the raw material interfaces, and is used to mix the raw materials supplied by at least two of the raw material interfaces into the inner cavity of the joint, thereby forming the anchor.

[0019] Furthermore, the mixing element is a spiral blade extending in a direction toward the medium channel, and the mixing element includes a first section and a second section that are alternately arranged, and the first section and the second section have opposite rotation directions.

[0020] In the self-drilling anchor cable of the present invention, medium flows along the medium channel within the cable assembly and is discharged through the medium outlet. During this flow, the medium passes through hydraulic blades, driving the hydraulic blades to rotate, which in turn drives the drill bit at the first end of the cable assembly to drill a hole. Therefore, the self-drilling anchor cable of the present invention can be drilled and then anchored after drilling, without the need to remove the self-drilling anchor cable from the drilled hole. This simplifies the installation process and allows for smooth installation even in the event of a hole collapse.

[0021] The present invention is based on the construction method of any one of the above-mentioned self-drilling anchor cables, comprising:

[0022] S1. Supplying high-pressure water into the medium channel, driving the hydraulic blades to rotate and the drill bit to rotate by the high-pressure water, and simultaneously driving the drill bit and the cable assembly to feed by the high-pressure water, thereby drilling;

[0023] S2. After drilling to a specified depth, supplying an anchoring agent into the medium channel, and discharging the anchoring agent from the medium outlet to at least between the cable assembly and the inner wall of the drilled hole, thereby anchoring the cable assembly;

[0024] S3. Tensioning the cable assembly.

[0025] The construction method of the self-drilling anchor cable of the present invention can drill holes and anchor after drilling, without removing the self-drilling anchor cable from the drill hole and then tensioning it, thereby having a simple construction process and being able to realize automated construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 is a schematic diagram of a self-drilling anchor cable according to an embodiment of the present invention;

[0027] Figure 2 yes Figure 1 Enlarged schematic diagram of the middle sleeve, cutter head and hydraulic blades;

[0028] Figure 3 yes Figure 1 Enlarged schematic diagram of the middle joint and mixing piece.

[0029] Reference numerals:

[0030] 1. Cable assembly; 11. Shaft 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 piece. DETAILED DESCRIPTION

[0031] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0032] Reference below Figure 1-Figure 3 A self-drilling anchor cable and a construction method according to an embodiment of the present invention are described.

[0033] like Figure 1-Figure 3 As shown, the self-drilling anchor cable according to the embodiment of the present invention includes a cable assembly 1 , a drill bit 2 and a hydraulic blade 3 .

[0034] The cable assembly 1 is provided with a medium channel 4, which extends along the length direction of the cable assembly 1. For example, Figure 1 As 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 .

[0035] The drill bit 2 is rotatably connected to the first end of the cable assembly 1. The drill bit 2 or the first end of the cable assembly 1 is provided with a medium outlet 5, which is connected to the medium channel 4 and is used to discharge the medium in the medium channel 4. For example, Figure 1 and Figure 2 As shown, the drill bit 2 is rotatably disposed at the left end of the cable assembly 1. The left end of the drill bit 2 or the cable assembly 1 is provided with a medium outlet 5, which is connected to 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.

[0036] The hydraulic blades 3 are arranged in the medium channel 4 and connected to the drill bit 2. The hydraulic blades 3 can rotate under the driving force of the medium flowing in the medium channel 4, thereby driving the drill bit 2 to rotate. Figure 1 and Figure 2 As shown, the right end of the drill bit 2 is connected to the hydraulic blade 3, which 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 blade 3 is located upstream of the medium outlet 5. The medium in the medium channel 4 contacts the hydraulic blade 3 in the process of flowing toward the medium outlet 5, thereby driving the hydraulic blade 3 to rotate, and thus the hydraulic blade 3 drives the drill bit 2 to rotate.

[0037] In the self-drilling anchor cable of the present invention, medium flows along the medium channel within the cable assembly and is discharged through the medium outlet. During this flow, the medium passes through hydraulic blades, driving the hydraulic blades to rotate, which in turn drives the drill bit at the first end of the cable assembly to drill a hole. Therefore, the self-drilling anchor cable of the present invention can be drilled and then anchored after drilling, without having to remove the self-drilling anchor cable from the hole. This simplifies the installation process and allows for smooth installation of the anchor cable even in the event of a hole collapse.

[0038] In some embodiments, the hydraulic blades 3 are spiral-shaped and extend along the length of the cable assembly 1 .

[0039] like Figure 1 and Figure 2 As shown, the hydraulic blade 3 is extended in the left-right direction and is arranged in a spiral shape around the left-right direction, so that the medium flowing in the medium channel 4 can drive the hydraulic blade 3 to rotate around the axial direction of the hydraulic blade 3 (such as Figure 1 (left and right as shown).

[0040] In some embodiments, the medium outlet 5 penetrates the drill bit 2 along the axial direction of the drill bit 2 .

[0041] like Figure 1 and Figure 2 As shown, the medium outlet 5 passes through the drill bit 2 in the left-right direction. On the one hand, it is convenient for the self-drilling anchor cable to feed 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 other hand, the medium discharged from the medium outlet 5 can bring out the slag generated by drilling during drilling to achieve the slag removal effect.

[0042] 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 an axial hole 11, the rotating shaft 22 is rotatably arranged in the axial hole 11, and the connecting seat 23 is located in the medium channel 4 and is connected to the hydraulic blade 3.

[0043] like Figure 1 and Figure 2 As shown, the drill bit 2 comprises a cutter head 21, a rotating shaft 22, and a connecting seat 23, connected sequentially from left to right. The left end of the cable assembly 1 is provided with an axial hole 11 extending in the left-right direction and communicating with the medium channel 4. The rotating shaft 22 is disposed within the axial hole 11 and is rotatable relative to the axial hole 11. The cutter head 21 is located outside the cable assembly 1 for drilling. The connecting seat 23 is located within the medium channel 4 and is equipped with hydraulic blades 3. The medium outlet 5 extends sequentially through the cutter head 21, the rotating shaft 22, and the connecting seat 23 in the left-right direction. Thus, the drill bit 2 is rotatably disposed at the left end of the cable assembly 1 and is capable of drilling holes driven by the hydraulic blades 3.

[0044] The cutter head 21 is preferably, but not limited to, a two-wing cutter head.

[0045] In some embodiments, the cable assembly 1 includes a connected sleeve 12 and a cable body 13 . 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 , and the sleeve 12 is provided with a drill bit 2 and a hydraulic blade 3 .

[0046] like 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 interior of the cable body 13 is hollow to form another part of the medium channel 4.

[0047] An axial hole 11 is provided at the left end of the sleeve 12, and a rotating shaft 22 is provided in the axial hole 11 and can rotate in the left and right directions relative to the axial hole 11, so that the drill bit 2 can be rotatably provided at the left end of the sleeve 12 through the axial hole 11. The cutter head 21 is located on the left side outside 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.

[0048] Since the sleeve 12 is a rigid object, arranging the drill bit 2 and the hydraulic blades 3 in the sleeve 12 can prevent the bending deformation of the cable assembly 1 from causing damage to the drill bit 2 and the hydraulic blades 3, ensuring smooth rotation of the drill bit 2 and the hydraulic blades 3, thereby ensuring smooth drilling of the self-drilling anchor cable.

[0049] 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 .

[0050] like Figure 1 and Figure 2 As 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 .

[0051] During the drilling process, the diameter of the hole drilled by the cutter head 21 is roughly consistent with the outer diameter of the sleeve 12. The sleeve 12 abuts against the drill hole and moves along the drill hole, thereby driving the cable body 13 to move. At the same time, since the sleeve 12 is a rigid object, the sleeve 12 abuts against the drill hole to ensure the moving direction of the sleeve 12, thereby ensuring the drilling direction of the cutter head 21, and avoiding the bending deformation of the cable body 13 affecting the drilling direction of the cutter head 21.

[0052] In some embodiments, the sleeve 12 is a circular sleeve with a groove on its outer circumference. The groove runs through the sleeve 12 along its axial direction and is used for the medium discharged from the medium outlet 5 to pass through. Alternatively, the sleeve 12 is a polygonal sleeve.

[0053] like Figure 1 and Figure 2 As shown, the sleeve 12 can be a circular sleeve. In other words, the cross section of the sleeve 12 is circular, the diameter of the circle is the outer diameter of the sleeve 12, and the outer circumference of the sleeve 12 is against the inner circumference of the borehole, thereby ensuring the drilling direction of the cutter head 21.

[0054] The outer circumference of the sleeve 12 is provided with a groove, which 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, along the borehole from the inside to the outside (such as Figure 1 When the medium passes through the outside of the sleeve 12, the medium flows from left to right along the groove, thereby ensuring that the medium flows smoothly in the borehole and avoiding excessive resistance to the feeding self-drilling anchor cable.

[0055] The sleeve 12 can also be a polygonal sleeve. In other words, the cross-section of the sleeve 12 is a polygon, the circumscribed circle diameter of the polygon is the outer diameter of the sleeve 12, and the sleeve 12 has edges corresponding to the corners of the polygon and side walls corresponding to the sides of the polygon. The edges of the sleeve 12 are against the inner circumferential surface of the drill hole, thereby ensuring the drilling direction of the cutter head 21.

[0056] A space for the medium to pass through is formed between the side wall of the sleeve 12 and the inner circumference of the borehole. The medium discharged from the medium outlet 5 flows back in the borehole, in other words, flows from the inside to the outside along the borehole (such as Figure 1 When the medium passes through the outside of the sleeve 12, the medium flows from left to right along the spacing space, thereby ensuring smooth flow of the medium in the borehole and avoiding excessive resistance to the feeding self-drilling anchor cable.

[0057] Preferably, the sleeve 12 is a circular sleeve, and a groove is provided on the outer circumference of the sleeve 12 .

[0058] In some embodiments, the self-drilling anchor cable of the present invention further includes a connector 6 , which is detachably connected to the second end of the cable assembly 1 , and is used to supply medium to the medium channel 4 .

[0059] like Figure 1 and Figure 3 As shown, a detachable connector 6 is provided at the right end of the cable body 13. The connector 6 can be connected to a pipeline and / or a pump for supplying the medium, so that the medium is supplied to the medium channel 4 through the connector 6. After the process requiring the supply of the medium, such as the drilling process and the anchoring process, is completed, the connector 6 is removed from the cable body 13 to facilitate the next process of the self-drilling anchor cable, such as the tensioning process.

[0060] In some embodiments, the medium includes high-pressure water, and the connector 6 is provided with a communicating inner cavity and a high-pressure water interface 61 . The inner cavity of the connector 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 connector 6 .

[0061] like Figure 1 and Figure 3 As shown, the connector 6 is provided with an inner cavity extending in the left-right direction. The left end of the connector 6 is used to be detachably connected to the right end of the cable body 13, so that the inner cavity of the connector 6 is in communication with the medium channel 4. The right end of the connector 6 is provided with a high-pressure water interface 61 that is in communication with the inner cavity of the connector 6. The high-pressure water interface 61 can be connected to a pipeline and / or a pump that supplies high-pressure water, thereby supplying high-pressure water into the medium channel 4 through the inner cavity of the connector 6. The high-pressure water drives the hydraulic blades 3 and the drill bit 2 to rotate. At the same time, the pressure exerted by the high-pressure water on the sleeve 12 and the drill bit 2 pushes the sleeve 12 and the drill bit 2 to feed, thereby enabling the self-drilling anchor cable to drill a hole. During the drilling process, the high-pressure water is discharged from the medium outlet 5 into the borehole, carrying the slag in the borehole and flowing from the inside to the outside along the borehole to achieve slag removal.

[0062] Preferably, the pressure of the high-pressure water is greater than or equal to 15 MPa, so as to be able to push the sleeve 12 and the drill bit 2 to feed.

[0063] In some embodiments, the self-drilling anchor cable of the embodiment of the present invention further includes a mixing piece 7, the medium includes an anchor, the joint 6 is provided with a connected inner cavity and a raw material interface 62, 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 corresponding to the raw material of the anchor, the mixing piece 7 is provided 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 supply the raw materials in the inner cavity of the joint 6 from the at least two raw material interfaces 62 to mix, thereby forming an anchor.

[0064] like Figure 1 and Figure 3 As shown, the connector 6 has an inner cavity extending in the left-right direction. The left end of the connector 6 is used to be detachably connected to the right end of the cable body 13, so that the inner cavity of the connector 6 is connected to the medium channel 4. The mixing element 7 is provided in the inner cavity of the connector 6. The mixing element 7 preferably, but not limited to, extends in the left-right direction.

[0065] The side end of the joint 6 is provided with at least two raw material interfaces 62, preferably but not limited to two, the two raw material interfaces 62 are arranged at intervals in the left and right directions, and are arranged opposite to the mixing piece 7, the raw material interface 62 is connected to the pipeline and / or pump for supplying the corresponding raw material of the anchor, so that the raw material of the anchor enters the inner cavity of the joint 6 through the corresponding raw material interface 62, and the two raw materials of the anchor enter the inner cavity of the joint 6 through the corresponding raw material interface 62 and contact with the mixing piece 7, and are fully mixed by the mixing piece 7 to form an anchor, and the formed anchor enters the medium channel 4 from the inner cavity of the joint 6, and is then discharged into the borehole from the medium outlet 5, and flows from the inside to the outside along the borehole, thereby anchoring the self-drilling anchor cable.

[0066] It is understood that only one connector 6 may be provided, with the connector 6 simultaneously provided with the high-pressure water port 61, the raw material port 62, and the mixing piece 7. Alternatively, two connectors 6 may be provided, with one connector 6 provided with the high-pressure water port 61 for supplying high-pressure water, and the other connector 6 provided with the raw material port 62 and the mixing piece 7 for supplying the anchoring agent. Preferably, only one connector 6 is provided.

[0067] In some embodiments, the mixing element 7 is a spiral blade extending in a direction toward the medium channel 4 . The mixing element 7 includes a first segment and a second segment that are alternately arranged. The first segment and the second segment have opposite rotation directions.

[0068] like Figure 3 As shown, the mixing element 7 is a spiral blade extending in the left-right direction and arranged in the left-right direction. The mixing element 7 includes a first section and a second section arranged alternately in the left-right direction. The first section and the second section have opposite rotation directions. In other words, one of the first section and the second section rotates in the forward direction and the other rotates in the reverse direction. There are multiple first sections and multiple second sections.

[0069] The two raw materials flow to the left after entering the inner cavity of the joint 6. During the flow, the two raw materials are fully mixed by the first section and the second section rotating in opposite directions to form an anchoring agent.

[0070] It can be understood that, in other embodiments, the mixing element may also be a stirrer.

[0071] The embodiment of the present invention further provides a construction method of a self-drilling anchor cable based on the embodiment of the present invention, comprising:

[0072] S1. High-pressure water is supplied to the medium channel 4. The high-pressure water drives the hydraulic blades 3 to rotate, thereby driving the drill bit 2 to rotate. At the same time, the high-pressure water drives the drill bit 2 and the cable assembly 1 to feed, thereby drilling.

[0073] Specifically, high-pressure water is supplied to the medium channel 4 through the joint 6, and the high-pressure water flows through the hydraulic blades 3 and drives the hydraulic blades 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 into the borehole from the medium outlet 5, and carries the slag in the borehole and flows from the inside to the outside along the borehole to the outside of the borehole.

[0074] S2. After the hole is drilled to a specified depth, an anchoring agent is supplied to the medium channel 4. The anchoring agent is discharged 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.

[0075] Specifically, after the hole is drilled to the specified depth, the supply of high-pressure water to the joint 6 is stopped, and the raw material of the anchor is started to be supplied to the joint 6. The anchor is mixed through the joint 6 and the mixing piece 7 to form the anchor and the anchor is supplied to the medium channel 4. The anchor is discharged from the medium outlet 5 to between the drill bit 2 and the cable assembly 1 and the inner wall of the borehole, and flows from the inside to the outside along the borehole. After the anchor overflows from the borehole, the supply of the anchor is stopped and left to stand for a period of time so that the anchor anchors the cable assembly 1 and the drill bit 2 in the borehole.

[0076] S3. Tensioning the cable assembly 1.

[0077] Specifically, the connector 6 is removed from the right end of the cable assembly 1 , and the right end of the cable assembly 1 is connected by a tensioning device and the cable assembly 1 is tensioned.

[0078] The construction method of the self-drilling anchor cable of the embodiment of the present invention is that the self-drilling anchor cable of the embodiment of the present invention can be used to drill holes, anchor after drilling, and then tensioned. During the drilling and anchoring process, the corresponding medium can be supplied to the medium channel. There is no need to remove the self-drilling anchor cable from the drill hole, thereby having a simple construction process and being able to realize automated construction.

[0079] In the description of the present invention, it should be understood that the terms "left", "right", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They 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, they cannot be understood as limiting the present invention.

[0080] Furthermore, the terms "first" and "second" are used solely for distinction and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0081] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection, or communication; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0082] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0083] In the present invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction 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 do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0084] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify 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), the medium channel (4) extending along the length direction of the cable assembly (1), the drill bit (2) is rotatably connected to the first end of the cable assembly (1), the drill bit (2) or the first end of the cable assembly (1) is provided with a medium outlet (5), the medium outlet (5) is communicated with the medium channel (4) and is used to discharge the medium in the medium channel (4), the hydraulic blade (3) is provided in the medium channel (4) and connected to the drill bit (2), and 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; The medium outlet (5) penetrates the drill bit (2) along the axial direction of the drill bit (2), so that when the self-drilling anchor cable is drilling, the medium discharged from the medium outlet (5) has the effect of reducing friction and cooling the drill bit (2), and the medium discharged from the medium outlet can bring out the slag generated by drilling during drilling to achieve the effect of slag removal; the drill bit (2) comprises 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 an axial hole (11), the rotating shaft (22) is rotatably arranged in the axial hole (11), and the connecting seat (23) is located in the medium channel (4) and is connected to the hydraulic blade (3).

2. The self-drilling anchor cable according to claim 1, characterized in that: The hydraulic blades (3) are spiral-shaped and extend along the length direction of the cable assembly (1).

3. 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).

4. The self-drilling anchor cable according to claim 3, characterized in that: The sleeve (12) is a circular sleeve, and a groove is provided on the outer peripheral surface of the sleeve (12), and 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.

5. The self-drilling anchor cable according to claim 1, characterized in that: It also includes a joint (6), which 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).

6. The self-drilling anchor cable according to claim 5, characterized in that: 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 the high-pressure water into the inner cavity of the joint (6).

7. The self-drilling anchor cable according to claim 6, characterized in that: The pressure of the high-pressure water is greater than or equal to 15 MPa.

8. The self-drilling anchor cable according to claim 5, characterized in that: The invention also includes a mixing piece (7), the medium includes an anchoring agent, the joint (6) is provided with a connected inner cavity and a raw material interface (62), the inner cavity of the joint (6) is used to communicate with the medium channel (4), the raw material interface (62) is at least two and is arranged corresponding to the raw material of the anchoring agent, 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.

9. The self-drilling anchor cable according to claim 8, 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.

10. A construction method of a self-drilling anchor cable according to any one of claims 1 to 9, characterized in that: include: S1. High-pressure water is supplied to the medium channel (4), and the high-pressure water drives the hydraulic blade (3) to rotate to drive the drill bit (2) to rotate. At the same time, the high-pressure water drives the drill bit (2) and the cable assembly (1) to feed, 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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