Impact-resistant anchor rod interconnection assembly, support system and construction method

Abstract

The present application belongs to the technical field of underground roadway support, and particularly relates to a kind of anti-impact anchor rod interconnection assembly, supporting system and construction method.Anti-impact anchor rod interconnection assembly, including connector and padlock, the connector is connected to the outer end of anchor rod;Between two adjacent anchor rods, the padlock is provided, the padlock is connected with the connector on the corresponding anchor rod, the padlock includes a plurality of sequentially connected links, at least part of the links have a first opening, the links with the first opening and adjacent links are detachably connected through the first opening.The anti-impact anchor rod interconnection assembly disclosed in the present application can connect multiple anchor rods with each other, constrain the displacement when the anchor rod is pulled off and shot, avoid the anchor rod from shooting and injuring people, and improve the stability and safety of surrounding rock support.

Description

Technical Field

[0001] This invention belongs to the field of underground roadway support technology, specifically relating to an anti-jetting anchor bolt interconnection assembly, support system, and construction method. Background Technology

[0002] Rock bolt support can effectively control the deformation of the surrounding rock. In the relevant technologies, each rock bolt is set relatively independently and is not connected to each other, or a protective net is set between the rock bolts to prevent rocks from falling and injuring people. However, as the support pressure of the surrounding rock in some roadways continues to increase, the possibility of rock bolts breaking and shooting out of the anchored surrounding rock and injuring people will greatly increase, posing a significant safety hazard. Summary of the Invention

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

[0004] Therefore, embodiments of the present invention propose an anti-shooting anchor bolt interconnection assembly, which enables multiple anchor bolts to be interconnected, constrains the displacement when the anchor bolt breaks during shooting, avoids anchor bolt shooting causing injury, and improves the stability and safety of surrounding rock support.

[0005] An embodiment of the present invention further proposes a support system.

[0006] An embodiment of the present invention also proposes a construction method for a support system.

[0007] According to an embodiment of the present invention, the anti-jet anchor bolt interconnection assembly includes:

[0008] A connector, which is connected to the outer end of the anchor bolt;

[0009] A chain is provided between two adjacent anchor rods, and the chain is connected to the connector on the corresponding anchor rod. The chain includes a plurality of chain links connected in sequence, and at least some of the chain links have a first opening. The chain link with the first opening is detachably connected to the adjacent chain link through the first opening.

[0010] The anti-shooting anchor bolt interconnection assembly of this invention enables multiple anchor bolts to be interconnected, constraining the displacement when the anchor bolt breaks during shooting, preventing anchor bolt shooting from injuring people, and improving the stability and safety of surrounding rock support.

[0011] In some embodiments, the chain link includes two arc segments and a straight segment disposed between the two arc segments, and a chain hole is formed in the middle of the chain link;

[0012] The chain link having the first opening is a first chain link. The first opening of the first chain link is located on one of the two straight segments, and a snap-fit ​​portion is provided on the other of the two straight segments. The length dimension A5 of the snap-fit ​​portion is greater than the outer diameter dimension of the first chain link at the first opening, the outer diameter dimension A1 of the snap-fit ​​portion is less than the width dimension A2 of the first opening, and the outer diameter dimension A4 of the other segments of the first chain link excluding the snap-fit ​​portion is greater than the width dimension A2 of the first opening.

[0013] In some embodiments, the two straight segments are arranged parallel to each other and spaced apart along a first direction, and the snap-fit ​​portion is arranged opposite to the first opening in the first direction; and / or

[0014] The chain also includes multiple second links in the form of closed loops, which are connected in sequence to form the chain body. The length of the chain body is greater than or equal to 1 / 2D1 and less than or equal to 3 / 4D1, where D1 is the preset distance between two adjacent anchor rods.

[0015] In some embodiments, the outer diameter A4 of the segment on the first chain link excluding the snap-fit ​​portion is smaller than the interval A3 between the two straight segments; or

[0016] The chain hole of the first chain link includes a middle hole segment and end holes located at both ends of the middle hole segment. The end holes are circular. The first opening of the first chain link communicates with the middle hole segment. The width dimension A6 of the middle hole segment is smaller than the radial dimension A7 of the end holes. The outer diameter dimension A1 of the snap-fit ​​portion is smaller than the width dimension A6 of the middle hole segment. The outer diameter dimension A4 of the other sections of the first chain link excluding the snap-fit ​​portion is larger than the width dimension A6 of the middle hole segment and smaller than the radial dimension A7 of the end holes.

[0017] In some embodiments, the outer end of the anchor rod is provided with a connection hole, the connector is an open ring shape with a second opening, the connector is connected to the connection hole, and the chain is connected to the connector.

[0018] In some embodiments, the connector includes:

[0019] Two first poles are arranged parallel to each other and opposite to each other;

[0020] Two second rods are arranged parallel to each other and opposite to each other. The two first rods and the two second rods are connected end to end to form a rectangular ring. One of the two first rods passes through the connecting hole and the other has a second opening.

[0021] In some embodiments, the first rod and the second rod are of the same length; and / or

[0022] Both the first rod and the second rod have circular cross-sections, and their outer diameters are the same; and / or

[0023] The length of the chain link connected to the connector is smaller than the dimensions of the first rod and the second rod.

[0024] In some embodiments, the connector includes a plate body disposed at the outer end of the anchor rod, the plate body having a plurality of first through holes, and the chain being connected to the first through holes.

[0025] The support system of this invention includes:

[0026] Anchor bolts, multiple anchor bolts are installed within the tunnel wall;

[0027] As described in any of the above embodiments, the anti-jet anchor bolt interconnection assembly is provided between two adjacent anchor bolts, and the anti-jet anchor bolt interconnection assembly is provided between each anchor bolt and at least two adjacent anchor bolts.

[0028] The support system construction method of this invention, used for constructing the support system as described in the above embodiments, includes the following steps:

[0029] Obtain the preset distance between two adjacent anchor bolts on the tunnel wall;

[0030] The chain is manufactured based on the preset spacing;

[0031] Anchor bolt support is performed on the tunnel wall, and connectors are installed at the outer ends of the anchor bolts;

[0032] Connect the chain to the corresponding connector;

[0033] Adjust the orientation of the connector and adjust the length of the chain by adding or removing the first link in the chain. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the anti-impact anchor bolt interconnection assembly according to an embodiment of the present invention.

[0035] Figure 2 This is a schematic diagram of the structure of the first chain link in an embodiment of the present invention.

[0036] Figure 3 This is a schematic diagram of the structure of the two first links in an embodiment of the present invention before they are assembled.

[0037] Figure 4 This is a schematic diagram of the assembly of two first chain links in an embodiment of the present invention.

[0038] Figure 5 This is a schematic diagram of the structure of the first chain link in another embodiment of the present invention.

[0039] Figure 6 This is a schematic diagram of the connector structure in an embodiment of the present invention.

[0040] Figure 7 This is a schematic diagram of the anchor rod structure in an embodiment of the present invention.

[0041] Figure 8 This is a schematic diagram of the connection structure between the connector and the anchor rod in an embodiment of the present invention.

[0042] Figure 9 This is a schematic diagram of the support system according to an embodiment of the present invention.

[0043] Figure 10 This is a schematic diagram of the support system according to another embodiment of the present invention.

[0044] Figure label:

[0045] 100. Anti-impact anchor bolt interconnection assembly;

[0046] 1. Connector; 11. First rod; 12. Second rod; 13. Second opening;

[0047] 2. Chain; 21. First link; 22. First opening; 23. Straight section; 24. Arc section; 25. Snap-fit ​​part; 26. Chain hole; 261. Middle hole section; 262. End hole;

[0048] 3. Anchor bolt; 31. Connecting hole;

[0049] 4. Surrounding rock. Detailed Implementation

[0050] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0051] refer to Figures 1-10 The anti-shooting anchor bolt interconnection assembly, support system, and construction method in the embodiments of the present invention are described.

[0052] See Figure 1The anti-jetting anchor bolt interconnection assembly 100 of this invention includes a connector 1 and a chain 2. The connector 1 is connected to the outer end of the anchor bolt 3, and a chain 2 is provided between two adjacent anchor bolts. The chain 2 is connected to the connector 1 on the corresponding anchor bolt. It should be understood that the chain 2 is connected to the anchor bolt through the connector 1. The chain 2 is provided between adjacent anchor bolts 3 on the tunnel wall, so that when one of the anchor bolts breaks, the chain 2 can be used to constrain its displacement, preventing the anchor bolt from being ejected, thereby reducing the risk of injury from ejected anchor bolts. The connector 1 facilitates the connection between the anchor bolts of the chain 2 and increases the constraint force of the chain 2 on the anchor bolt.

[0053] The chain 2 includes a plurality of links connected in sequence, at least some of which have a first opening 22. The links with the first opening 22 are detachably connected to adjacent links through the first opening 22.

[0054] It should be understood that the chain link with the first opening 22 can be disassembled, thus providing greater flexibility in adjusting the length of the chain 2, facilitating installation, improving construction efficiency, and making it more practical.

[0055] The anti-shooting anchor bolt interconnection assembly of this invention enables multiple anchor bolts to be interconnected, constraining the displacement when the anchor bolt breaks during shooting, preventing anchor bolt shooting from injuring people, and improving the stability and safety of the surrounding rock support.

[0056] like Figures 2-5 As shown, in some embodiments, the chain link includes two arc segments 24 and a straight segment 23 between the two arc segments 24. A chain hole 26 is formed in the middle of the chain link. The first opening 22 in the first chain link 21 is connected to the chain hole 26. The chain link with the first opening 22 is the first chain link 21. The first opening 22 of the first chain link 21 is located on one of the two straight segments 23. A snap-fit ​​portion 25 is provided on the other of the two straight segments 23. The length dimension A5 of the snap-fit ​​portion 25 is greater than the outer diameter dimension of the first chain link 21 at the first opening 22. The outer diameter dimensions of the other sections of the first chain link 21 excluding the snap-fit ​​portion 25 are the same and are all A4, which is convenient for processing. The outer diameter dimension A1 of the snap-fit ​​portion 25 is smaller than the width dimension A2 of the first opening 22, and the outer diameter dimension A4 of the other sections of the first chain link 21 excluding the snap-fit ​​portion 25 is greater than the width dimension A2 of the first opening 22.

[0057] It should be noted that, since the first link 21 has a first opening 22, the embodiment of the present invention limits the position of the first opening 22, the position of the locking part 25, and the size of each section in the first link 21, so that the chain 2 is not easy to break from the first opening 22 after installation, thereby improving the structural stability of the chain 2 while ensuring convenient length adjustment.

[0058] Specifically, when the length A5 of the locking part 25 is greater than the outer diameter A4 of the first chain link 21 at the first opening 22, and the outer diameter A1 of the locking part 25 is less than the width A2 of the first opening 22, the locking part 25 can smoothly pass through the first opening 22 and enter the chain hole 26. When the outer diameter A4 of the other sections of the first chain link 21 excluding the locking part 25 is greater than the width A2 of the first opening 22, the first chain link 21 can only disassemble the chain 2 when the locking part 25 corresponds to the first opening 22. After the construction of the chain 2 is completed, the chain 2 is in a roughly tensioned state, and the locking parts 25 and the first opening 22 of different first chain links 21 are misaligned. When one of the anchor rods breaks and is ejected, the chain 2 will not break.

[0059] like Figures 2-5 As shown, in some embodiments, two straight segments 23 are arranged parallel to each other and spaced apart along a first direction, and the snap-fit ​​portion 25 is arranged opposite to the first opening 22 in the first direction. It should be understood that the chain link has two parallel straight segments 23, and arc segments 24 are provided at the ends of the two straight segments 23. During production, the rod with the snap-fit ​​portion 25 can be processed first, and then the chain link can be formed by bending the rod, thereby reducing the processing difficulty and cost.

[0060] In some embodiments, the chain 2 further includes a plurality of second links in the form of closed loops, which are connected in sequence to form the chain body. The length of the chain body is greater than or equal to 1 / 2D1 and less than or equal to 3 / 4D1, where D1 is a preset distance between two adjacent anchor rods.

[0061] In other words, the chain 2 includes a chain body composed of multiple closed-loop second links connected together. The length of the chain body is less than the preset distance between two adjacent anchor rods. By adding an appropriate number of first links 21, the total length of the chain 2 is adjusted, thereby ensuring that the chain 2 is in a roughly taut state after being connected between two anchor rods, which can more effectively constrain the ejection displacement when the anchor rod breaks.

[0062] When the length of the main body of the chain is less than or equal to 1 / 2D1, the required number of first chain links 21 will be excessive. During adjustment, more time will be needed to assemble more first chain links 21. When the length of the main body of the chain is greater than or equal to 3 / 4D1, the adjustable range of the chain 2 will be limited. When the spacing between the anchor rods changes due to deviations in the anchor holes or geological deformation, it is not easy to adjust the length of the chain 2. For example, if the deviation in the anchor holes causes the distance between two adjacent anchor rods to be less than 3 / 4D1, and the length of the main body of the chain is greater than 3 / 4D1, then the chain 2 cannot be adjusted by increasing or decreasing the number of first chain links 21.

[0063] Furthermore, the length of the chain body can be 1 / 2D1, 3 / 5D1, or 3 / 4D1.

[0064] like Figures 2-4 As shown, in some embodiments, the outer diameter A4 of the section of the first link 21 excluding the locking portion 25 is smaller than the interval A3 between the two straight segments 23. It should be understood that when two first links 21 are joined, the locking portion 25 of one first link 21 passes through the first opening 22 of the other first link 21 and enters the chain hole 26. In order for the two first links 21 to effectively unfold after joining, it is necessary to ensure that the outer diameter A4 of the section of the first link 21 excluding the locking portion 25 is smaller than the interval A3 between the two straight segments 23, thereby allowing the first link 21 to slide freely within the chain hole 26 of the other first link 21 and to unfold.

[0065] like Figure 5 As shown, in some embodiments, the chain hole 26 of the first chain link 21 includes a middle hole segment 261 and end holes 262 located at both ends of the middle hole segment 261. The end holes 262 are circular. The first opening 22 of the first chain link 21 communicates with the middle hole segment 261. The width dimension A6 of the middle hole segment 261 is smaller than the radial dimension A7 of the end holes 262. The outer diameter dimension A1 of the snap-fit ​​portion 25 is smaller than the width dimension A6 of the middle hole segment 261. The outer diameter dimension A4 of the other sections of the first chain link 21 excluding the snap-fit ​​portion 25 is larger than the width dimension A6 of the middle hole segment 261 and smaller than the radial dimension A7 of the end holes 262.

[0066] It should be understood that, after meeting the above dimensional requirements, when the two first links 21 (link A and link B respectively) are assembled, the engaging part 25 of link A enters the middle hole section 261 of the corresponding link hole 26 in link B through the first opening 22 of link B. The engaging part 25 of link A continues to move within the middle hole section 261 of the link hole 26 in link B until it enters the end hole 262 of link B. At this point, by rotating link A, the arc section 24 of link A engages with the end hole 262 of link B. The arc segments 24 are connected to realize the assembly of chain link A and chain link B. Since the outer diameter A4 of the other sections of the first chain link 21 excluding the locking part 25 is greater than the width A6 of the intermediate hole section 261 and less than the radial dimension A7 of the end hole 262, if chain link A and chain link B are to be disassembled, the locking part 25 of chain link A needs to be moved to the end hole 262 of chain link B, and then the locking part 25 of chain link A is slid through the intermediate hole section 261 to the first opening 22 of chain link B.

[0067] The structure of the above embodiment can further reduce the probability of chain 2 breaking and improve the structural stability of chain 2.

[0068] like Figure 6 and Figure 7 As shown, in some embodiments, the outer end of the anchor rod is provided with a connection hole 31, and the connector 1 is an open ring shape with a second opening 13. The connector 1 is connected to the connection hole 31, and the chain 2 is connected to the connector 1. It should be understood that the connector 1 can be inserted into the connection hole 31 at the outer end of the anchor rod, and the connection between the connector 1 and the chain 2 can be achieved through the second opening 13. When the chain 2 is in a generally tensioned state, a stable connection structure between the connector 1, the anchor rod, and the chain 2 can be ensured.

[0069] Furthermore, after the connector 1, anchor rod and chain 2 are connected and assembled, the connector 1 and anchor rod can be spot welded to fix them, so as to prevent the connector 1 from swinging or rotating, and to prevent the chain 2 and connector 1 from separating or the connector 1 from the end of the anchor rod.

[0070] Optionally, connector 1 is in the shape of an open annulus or an open ellipse.

[0071] like Figure 6 As shown, in some embodiments, the connector 1 includes two first rods 11 and two second rods 12. The two first rods 11 are arranged in parallel and opposite directions, and the two second rods 12 are arranged in parallel and opposite directions. The two first rods 11 and the two second rods 12 are connected end to end to form a rectangular ring. One of the two first rods 11 passes through the connection hole 31, and the other has a second opening 13.

[0072] In other words, connector 1 is a rectangular ring with an opening. When connector 1 is connected to the connection hole 31 at the end of the anchor rod, it can prevent connector 1 from falling off. The first rods 11 on both sides of the second opening 13 can form a stop. Under the premise of ensuring that connector 1 and chain 2 can be effectively connected, the size of the second opening 13 is reduced to prevent chain 2 from coming off connector 1.

[0073] like Figure 6 As shown, in some embodiments, the first rod 11 and the second rod 12 have the same length, both the cross-sections of the first rod 11 and the second rod 12 are circular, and the outer diameters of the first rod 11 and the second rod 12 are the same. That is, the connector 1 is square in shape, and each side of the connector 1 is a round rod, which facilitates the mating of the end hole 262 of the chain 2 with the second rod 12 of the connector 1, thereby improving the stability under stress.

[0074] Furthermore, the length dimension A7 of the chain link connected to the connector 1 is smaller than the dimension B3 of the first rod 11 and the second rod 12, which makes it less likely for the chain link connected to the connector 1 in the chain 2 to fall off, thus improving the overall stability.

[0075] Optionally, the width A6 of the middle hole 261 and the radial dimension A7 of the end hole 262 in the chain hole 26 are greater than the outer diameter B1 of the first rod 11 and the second rod 12 in the connector 1, so as to ensure that the chain links can pass through the second opening 13 of the connector 1 and connect with each other.

[0076] like Figure 6 and Figure 7 As shown, in some embodiments, the outer diameter B1 of the first rod 11 and the second rod 12 in the connector 1 of the present invention is smaller than the diameter C2 of the connecting hole 31 at the outer end of the anchor rod, and the width B2 of the second opening 13 in the connector 1 is larger than the distance C3 from the center of the connecting hole 31 to the end face of the outer end of the anchor rod. This ensures that the connector 1 with a diameter of B1 can be connected to the anchor rod through the opening with a diameter of C2 at the end of the second opening 13. For example, by designing the end corner of the connector 1 with an arc, the connector 1 can be connected to the connecting hole 31 at the outer end of the anchor rod through the second opening 13, thereby realizing the connection between the anchor rod and the connector 1.

[0077] In some embodiments, connector 1 includes a plate body disposed at the outer end of the anchor rod, the plate body having a plurality of first through holes, and chain 2 connected to the first through holes. It should be understood that the plate body can be fixed to the end of the anchor rod by spot welding, with the end of the anchor rod abutting against the plate body; or the end of the anchor rod can be provided with a threaded section, and a second through hole is provided in the middle of the plate body, through which the anchor rod 3 passes, and the plate body is pressed against the tunnel wall by a nut provided on the threaded section.

[0078] At this point, the chain 2 can be connected to the first through hole on the plate, realizing the assembly of the chain 2, connector 1 and anchor rod.

[0079] like Figure 8 and Figure 9 As shown, the support system of this embodiment includes rock bolts and anti-jetting rock bolt interconnection components as described in any of the above embodiments. Multiple rock bolts are installed within the roadway wall, with anti-jetting rock bolt interconnection components provided between adjacent rock bolts, and each rock bolt is connected to at least two adjacent rock bolts by an anti-jetting rock bolt interconnection component. The rock bolts provide support for the surrounding rock 4, and the chain 2 connects the rock bolts, making the stress distribution among them more uniform. When the support pressure in a localized area of ​​the roadway increases, it can be transferred to other rock bolts through the chain 2, thereby improving the support effect and preventing rock bolt breakage and ejection, thus enhancing safety.

[0080] The support system construction method of this invention, used for constructing the support system as described in the above embodiments, includes the following steps:

[0081] S101. Obtain the preset spacing between two adjacent anchor bolts on the tunnel wall. By surveying the confining pressure, the spacing between adjacent anchor bolts on the tunnel wall is determined, thereby determining the preset spacing.

[0082] S102. Fabricate chain 2 based on preset spacing. That is, determine the length of chain 2 according to the size of the preset spacing, so that the length of chain 2 is approximately the same as the size of the preset spacing, which facilitates the adjustment of the length of chain 2 during later installation.

[0083] S103. Anchor bolt support is performed on the surrounding rock 4 of the tunnel wall, and connector 1 is installed at the outer end of the anchor bolt. After the anchor bolt support is completed, connector 1 is installed at the outer end of the anchor bolt to facilitate the installation of chains 2 between adjacent anchor bolts.

[0084] S104. Connect the chain 2 to the corresponding connector 1 to perform pre-assembly of the chain 2 and connector 1. For example, if a chain 2 is installed between an anchor and four surrounding anchors, the four chains 2 need to be pre-assembled first, and then the final installation is completed by adjusting the connector 1 and the chain 2.

[0085] S105. Adjust the orientation of connector 1 and adjust the length of chain 2 by adding or removing the first link 21 in chain 2. Adjusting the orientation of connector 1 ensures that connector 1 can withstand force and that chain 2 is not easily detached after being assembled with connector 1, preventing chain 2 from approaching the second opening 13 of connector 1. After adjusting the orientation angle of connector 1, the number of first link 21 in chain 2 is increased or decreased to keep chain 2 in a roughly taut state, ensuring that chain 2 can provide sufficient restraining force for anchor rod if one of the anchor rods breaks and is ejected.

[0086] Compared with anchor bolts in related technologies, connecting independent anchor bolts together can effectively prevent local stress from increasing, avoid anchor bolts from shooting out and injuring people, ensure personnel safety, reasonably control the local deformation of the surrounding rock within the anchoring range, and also prevent the local roof from detaching from the rock layer and injuring people after large deformation.

[0087] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0088] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0089] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0090] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0091] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0092] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A shock-resistant anchor bolt interconnection assembly, characterized in that, include: A connector, which is connected to the outer end of the anchor bolt; A chain is provided between two adjacent anchor rods, and the chain is connected to the connector on the corresponding anchor rod. The chain includes a plurality of chain links connected in sequence, and at least some of the chain links have a first opening. The chain link with the first opening is detachably connected to the adjacent chain link through the first opening. The chain link includes two arc segments and two straight segments between the two arc segments, and a chain hole is formed in the middle of the chain link; The chain link having the first opening is a first chain link. The first opening of the first chain link is located on one of the two straight segments, and a locking part is provided on the other of the two straight segments. The length dimension of the locking part is... The outer diameter of the first chain link at the first opening is greater than the outer diameter of the snap-fit ​​portion. smaller than the width of the first opening And the outer diameter of the other sections on the first chain link excluding the snap-fit ​​portion Width greater than the first opening ; The two straight segments are parallel and spaced apart along a first direction, and the snap-fit ​​portion and the first opening are opposite to each other in the first direction; and / or The chain also includes multiple second links in the form of closed loops, which are sequentially connected to form the chain body, the length of which is greater than or equal to 1 / 2. And less than or equal to 3 / 4 ,in The preset spacing between two adjacent anchor rods; The outer end of the anchor rod is provided with a connection hole, the connector is an open ring shape with a second opening, the connector is connected to the connection hole, and the chain is connected to the connector. The connector includes: Two first poles are arranged parallel to each other and opposite to each other; Two second rods are arranged parallel to each other and opposite to each other. The two first rods and the two second rods are connected end to end to form a rectangular ring. One of the two first rods passes through the connecting hole and the other has a second opening. The connector includes a plate body disposed at the outer end of the anchor rod, and the plate body is provided with a plurality of first through holes, the chain being connected to the first through holes.

2. The anti-shooting anchor bolt interconnection assembly according to claim 1, characterized in that, The outer diameter of the section of the first chain link excluding the snap-fit ​​portion Smaller than the spacing between the two line segments ;or The chain hole of the first chain link includes a central hole segment and end holes located at both ends of the central hole segment. The end holes are circular. The first opening of the first chain link communicates with the central hole segment. The width dimension of the central hole segment is... Smaller than the radial dimension of the end hole And the outer diameter of the snap-fit ​​part Smaller than the width of the intermediate hole segment The outer diameter of the section of the first chain link excluding the snap-fit ​​portion Larger than the width of the intermediate hole segment And smaller than the radial dimension of the end hole. .

3. The anti-shooting anchor bolt interconnection assembly according to claim 1, characterized in that, The first rod and the second rod are of the same length; and / or Both the first rod and the second rod have circular cross-sections, and their outer diameters are the same; and / or The length of the chain link connected to the connector is smaller than the length of the first rod and the second rod.

4. A support system, characterized in that, include: Anchor bolts, multiple anchor bolts are installed within the tunnel wall; The anti-jet anchor bolt interconnection assembly as described in any one of claims 1 to 3, wherein the anti-jet anchor bolt interconnection assembly is provided between two adjacent anchor bolts, and each anchor bolt is provided with the anti-jet anchor bolt interconnection assembly between it and at least two adjacent anchor bolts.

5. A construction method for a support system, characterized in that, The construction of the support system as described in claim 4 includes the following steps: Obtain the preset distance between two adjacent anchor bolts on the tunnel wall; The chain is manufactured based on the preset spacing; Anchor bolt support is performed on the tunnel wall, and connectors are installed at the outer ends of the anchor bolts; Connect the chain to the corresponding connector; Adjust the orientation of the connector and adjust the length of the chain by adding or removing the first link in the chain.

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