Device and method for lifting and correcting secondary lining embedded steel bars

Abstract

The invention relates to the field of tunnel secondary lining construction, in particular to a lifting and correcting device and method for secondary lining embedded steel bars, and the lifting and correcting device comprises a lifting assembly which comprises an anchor insertion rod parallel to the first direction X; the lifting block is used for lifting a second lining steel bar, the lifting block is directly or indirectly installed on the anchor insertion rod, the lifting block extends to the side away from the anchor insertion rod in the second direction, and the second direction is perpendicular to the first direction X; during construction, the anchor insertion rod is inserted into the surrounding rock, and the lifting block lifts the secondary lining steel bar to a preset position. The method has the advantages that deformation of the secondary lining steel bars under the action of self gravity is reduced, and the subsequent delivery and use effects are ensured.

Description

Technical Field

[0001] The present application relates to the field of tunnel secondary lining construction, and in particular to a pulling and correction device and method for secondary lining pre-embedded steel bars. Background Art

[0002] like Figure 1 As shown, the construction sequence of the lining on both sides of the tunnel is: primary lining construction, laying of waterproof board 13 and secondary lining construction. Specifically, after the primary lining is completed, the waterproof board 13 is first laid on the primary lining surface, then the secondary lining steel bars 14 and the trolley are set up to form a secondary lining casting cavity, then concrete is poured into the secondary lining casting cavity, and the trolley is removed after the concrete solidifies; When constructing the secondary lining steel bars 14, the configuration of the secondary lining steel bars 14 is to construct an arc-shaped arch frame with an opening facing downward along the primary support section. However, due to the self-weight of the secondary lining steel bars 14, the top of the secondary lining steel bars 14 will bend downward, and the two sides of the secondary lining steel bars 14 will intrude outward, resulting in different wall thicknesses of the secondary lining steel bars 14 from the tunnel clearance surface after the secondary lining is poured, which may affect subsequent delivery; Therefore, how to reduce the deformation of the secondary lining steel bars 14 under the action of their own gravity is an issue that needs to be solved urgently. Summary of the invention

[0003] In order to reduce the deformation of the secondary lining steel bars under their own gravity to ensure subsequent delivery and use, the present application provides a pulling and correction device and method for the secondary lining pre-embedded steel bars.

[0004] In the first aspect, the present application provides a lifting and correction device for secondary lining embedded steel bars, which adopts the following technical solution: A lifting and correction device for secondary lining embedded steel bars, comprising: A lifting assembly, the lifting assembly comprising an anchor rod arranged parallel to the first direction X; and A lifting block for lifting the second lining steel bars, wherein the lifting block is directly or indirectly mounted on the anchor rod, and the lifting block extends to a side away from the anchor rod in a second direction, wherein the second direction is perpendicular to the first direction X.

[0005] By adopting the above technical solution, after the secondary lining steel bars are in place, the anchor rods are driven into the surrounding rock. During the process of driving the anchor rods into the surrounding rock, after the lifting block contacts the secondary lining steel bars, the lifting block will pull the secondary lining steel bars upward to the required height. By lifting the secondary lining steel bars by the lifting block and by driving the anchor rods at different heights, each position of the secondary lining steel bars can be lifted to the required height in a targeted manner, reducing the deformation of the secondary lining steel bars under their own gravity, so as to ensure subsequent delivery and use.

[0006] Optionally, it also includes a sealing member having a first sealing ring; The first sealing ring is coaxially and fixedly connected to the anchor inserting rod. One end of the anchor inserting rod is the insertion end, and the other end is the exposed end. The outer diameter of the first sealing ring gradually decreases in the direction from the exposed end to the insertion end. The sealing member is located on the side of the lifting block close to the insertion end.

[0007] By adopting the above technical solution, a perforation adapted to the first sealing ring is formed on the waterproof board for the anchor inserting rod to pass through and for the first sealing ring to be inserted. By inserting the first sealing ring into the perforation of the waterproof board, the perforation on the waterproof board can be blocked to reduce the water in the surrounding rock from penetrating into the secondary lining layer.

[0008] Optionally, the sealing member further has a second sealing plate integrally provided with the first sealing ring; The second sealing plate is coaxially arranged on the end face of the first sealing ring away from the insertion end, and the outer diameter of the second sealing plate is larger than the maximum outer diameter of the first sealing ring; The wall surface of the second sealing plate close to the insertion end and located on the outer circle of the first sealing ring is the sealing end face.

[0009] By adopting the above technical solution, after the first sealing ring is inserted into the perforation on the waterproof board, the second sealing plate contacts the waterproof board, and the perforation on the waterproof board can be further blocked to reduce the water in the surrounding rock from penetrating into the secondary lining layer.

[0010] Optionally, the lifting assembly further includes: A rotating rod, which is directly or indirectly coaxially and rotatably connected to the exposed end of the anchor inserting rod; The lifting block is connected to the rotating rod so that the lifting block is indirectly installed on the anchor inserting rod.

[0011] By adopting the above technical solution, after the anchor inserting rod is inserted into the surrounding rock, if the lifting block cannot move along the first direction X to contact the secondary lining steel bars, the rotating rod can be rotated to make the lifting block rotate to the angle required for lifting the secondary lining steel bars, which can improve the convenience of the operation.

[0012] Optionally, it further includes: A locking rod having an insertion / extraction end and a driving end. The locking rod is slidably connected to the sealing member along the first direction X; the cross-section of the insertion / extraction end of the locking rod perpendicular to the first direction X is non-circular, and a insertion / extraction groove adapted to the insertion / extraction end is provided at one end of the rotating rod close to the insertion end; and An unlocking assembly installed on the sealing member, which is used to drive the locking rod to slide back and forth along the sealing member in the first direction X to insert / extract the locking rod along the rotating rod.

[0013] By adopting the above technical solution, when it is necessary to fix the anchor rod and the rotating rod, the locking rod is inserted into the rotating rod. When it is necessary to enable the anchor rod and the rotating rod to rotate relative to each other, the locking rod is pulled out from the insertion and extraction groove on the rotating rod, and then the rotating rod can rotate relative to the anchor rod; for different surrounding rock geological conditions, in some cases, the anchor rod can be driven straight into the surrounding rock. Therefore, the relative rotation of the rotating rod and the anchor rod has little influence on the process of driving the anchor rod; while in some cases, it is necessary to rotate the anchor rod and insert it into the surrounding rock. Therefore, after the rotating rod and the anchor rod are fixed, the rotating rod is rotated to insert the anchor rod into the surrounding rock; it can adapt to a variety of working environments.

[0014] Optionally, the seal has an accommodating chamber; the unlocking assembly includes: A rotating seat elastically hinged in the accommodating chamber along the seal by a torsion spring, so that the rotating seat adjusts between a locked posture and an unlocked posture, and the rotation axis of the rotating seat along the seal is perpendicular to the first direction X; A telescopic rod having a fixed end and a free end, the fixed end of the telescopic rod is fixedly connected to the rotating seat; one telescopic rod is provided on each side of the rotating seat along its rotation axis, one of the telescopic rods is a lifting telescopic rod (a), and the other telescopic rod is a pressing telescopic rod (b); and A pressing member, one end of the pressing member is hinged to the free end of the pressing telescopic rod (b), and the other end penetrates through the sealing end face of the second seal; The locking rod is hinged to the free end of the lifting telescopic rod (a); When the rotating seat is in the locked posture, the locking rod is inserted into the insertion and extraction groove, and one end of the pressing member penetrates through the sealing end face and extends outside the second sealing plate; When the rotating seat is in the unlocked posture, the locking rod is located outside the insertion and extraction groove, and the torsion spring has a force to drive the rotating seat to rotate from the unlocked posture to the locked posture.

[0015] By adopting the above technical solution, during the process of driving the anchor rod into the surrounding rock, as the second sealing plate approaches the waterproof plate, the waterproof plate will push the pressing member to move toward the side away from the insertion end, so that the locking rod can be pulled out from the insertion and extraction groove; by setting the unlocking assembly, the rotating rod can be unlocked during the process of inserting the anchor rod, and the operation is relatively convenient.

[0016] Optionally, the pressing member is in a ring shape coaxially arranged with the first sealing ring, and the second sealing plate is provided with an annular groove for accommodating the pressing member on the sealing end face; One end wall of the second sealing plate away from the first sealing ring is an installation end face, and a connecting rod is arranged in the accommodation chamber, with one end fixedly connected to the installation end face and the other end fixedly connected to the first sealing ring.

[0017] By adopting the above technical solution, a ring groove for inserting the pressing member can be formed on the waterproof plate. Therefore, by setting the pressing member as a ring shape, the pressing member can be inserted into the ring groove, thereby further improving the sealing effect.

[0018] Optionally, a first drainage hole is formed in the first sealing ring, with one end communicating with the accommodation chamber and the other end penetrating through the end wall of the first sealing ring near the insertion end. The insertion and extraction groove penetrates through the rotating rod in the [direction]. A second drainage hole is formed in the locking rod, with one end communicating with the accommodation chamber and the other end communicating with the insertion and extraction groove.

[0019] By adopting the above technical solution, the water in the surrounding rock can sequentially pass through the first drainage hole, the accommodation chamber, and the second drainage hole and be discharged, facilitating the observation of the water seepage situation in the surrounding rock.

[0020] Optionally, it further includes an outer sleeve, which is coaxially and threadedly connected to the outer peripheral wall of the rotating rod, and the lifting block is fixedly connected to the outer sleeve.

[0021] By adopting the above technical solution, when it is necessary to linearly move the lifting block in the first direction X, only need to hold the outer sleeve with one hand and rotate the rotating rod with the other hand, and the outer sleeve can move along the first direction X, which is convenient for the lifting block to lift the secondary lining steel bars along the first direction X.

[0022] In a second aspect, the present application provides a method for lifting and correcting the embedded steel bars of the secondary lining, adopting the following technical solution: A method for lifting and correcting the embedded steel bars of the secondary lining includes the following steps: S1: Drive the anchor inserting rod into the surrounding rock until the lifting block contacts the secondary lining steel bars. Then, continue to move the lifting block towards the surrounding rock side until the lifting block lifts the secondary lining steel bars to a preset position. S2: Repeat S1 until multiple points of the pressed secondary lining steel bars are lifted to the preset position.

[0023] By adopting the above technical solution, by inserting the anchor inserting rod into the surrounding rock, the secondary lining steel bars can be lifted to the preset position through the lifting block, preventing the secondary lining steel bars from deforming and causing uneven thickness between the secondary lining steel bars and the inner wall surface of the secondary lining concrete.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. By inserting anchor rods into the surrounding rock, the secondary lining steel bars can be lifted to a preset position through the lifting blocks, preventing the deformation of the secondary lining steel bars and avoiding the occurrence of uneven thickness between the secondary lining steel bars and the inner wall surface of the secondary lining concrete, so as to improve the quality of the secondary lining and ensure subsequent delivery and use. 2. By setting the seal, water seepage can be reduced. 3. By setting the first drainage hole and the second drainage hole, it is convenient to monitor the water seepage situation. Description of the Drawings

[0025] Figure 1 is a schematic structural diagram of the secondary lining steel bars in the related technology of this application; Figure 2 is a schematic structural diagram of the anchor rods installed in the surrounding rock in the lifting and correcting device of this application; Figure 3 is a schematic structural diagram of the lifting assembly in the lifting and correcting device of this application; Figure 4 is a cross-sectional view of the seal, the rotating rod and the outer sleeve in the lifting and correcting device of this application; Figure 5 is a cross-sectional view of the seal in the lifting and correcting device of this application; Figure 6 is a schematic structural diagram of the unlocking assembly in the lifting and correcting device of this application; Figure 7 is Figure 4 the enlarged view of part A in Figure 8 is Figure 4 the enlarged view of part B in Figure 9 is a schematic structural diagram of the outer sleeve and the lifting block in the lifting and correcting device of this application.

[0026] Description of reference numerals: 11, surrounding rock; 12, primary lining layer; 13, waterproof board; 131, perforation; 132, annular groove; 14, secondary lining steel bar; 2, lifting assembly; 21, anchor inserting rod; 211, inserting end; 212, exposed end; 22, lifting block; 221, embedding groove; 23, rotating rod; 231, inserting and extracting groove; 3, seal; 31, first sealing ring; 32, second sealing plate; 327, first sealing structure; 328, second sealing structure; 321, sealing end face; 322, installation end face; 323, connecting ring; 324, T-shaped groove; 325, rotating ring; 326, sliding groove; 33, accommodating chamber; 34, guiding groove; 35, connecting rod; 36, first drain hole; 4, locking rod; 41, inserting and extracting end; 42, driving end; 43, second drain hole; 5, unlocking assembly; 51, rotating seat; 511, torsion spring; 52, telescopic rod; 52a, lifting telescopic rod; 52b, pressing telescopic rod; 521, fixed end; 522, free end; 53, pressing member; 6, moving assembly; 61, outer sleeve. Detailed implementation manners

[0027] The following further elaborates on this application Figure 2-9 in conjunction with the attached drawings.

[0028] The embodiment of this application discloses a lifting and correcting device for the embedded steel bars of the secondary lining. Refer to Figure 2 and Figure 3 , the lifting and correcting device for the embedded steel bars of the secondary lining includes a lifting assembly 2; the lifting assembly 2 includes an anchor inserting rod 21 arranged parallel to the first direction X and a lifting block 22 directly or indirectly installed on the anchor inserting rod 21; The anchor inserting rod 21 has an inserting end 211 and an exposed end 212. The inserting end 211 of the anchor inserting rod 21 is conical, and the outer diameter of the conical part of the inserting end 211 gradually decreases towards the side away from the exposed end 212, so as to achieve the effect of more labor-saving insertion of the anchor inserting rod 21 into the surrounding rock 11; The lifting block 22 is used to lap the secondary lining steel bar 14. In order to prevent the secondary lining steel bar 14 from slipping and falling off on the lifting block 22, in some embodiments of this application, an embedding groove 221 for accommodating the secondary lining steel bar 14 is opened on the surface of the lifting block 22 close to the inserting end 211. As a preference, in order to adjust the distance between the lifting block 22 and the anchor inserting rod 21 in the direction perpendicular to the first direction X, a rod-shaped telescopic structure with adjustable length can also be provided between the lifting block 22 and the anchor inserting rod 21. The present disclosure does not make specific limitations here, as long as the distance between the anchor inserting rod 21 and the lifting block 22 in the direction perpendicular to the first direction X can be changed.

[0029] Refer to Figure 3 and Figure 4, in order to be able to install the anchor rod 21 into the surrounding rock 11, it is necessary to open a perforation 131 on the waterproof board 13 for the anchor rod 21 to pass through. In some embodiments, in order to reduce water seepage, a sealant can be provided between the perforation 131 and the anchor rod 21 to block the perforation 131; In other embodiments, in order to reduce the leakage of water in the surrounding rock 11 from the perforation 131 and to adapt to the lifting and correction device of the present application, the perforation 131 on the waterproof board 13 gradually decreases in the direction from the insertion end 211 to the exposed end 212; correspondingly, in some embodiments of the present application, there is also a seal 3 having a first sealing ring 31 and a second sealing plate 32. The first sealing ring 31 and the second sealing plate 32 are integrally provided and are both fixedly connected to the anchor rod 21; The outer diameter of the first sealing ring 31 gradually decreases in the direction from the exposed end 212 to the insertion end 211 of the anchor rod 21, so that the first sealing ring 31 can be adaptively inserted into the perforation 131 on the waterproof board 13 to block the perforation 131 on the waterproof board 13; As a structure to further prevent water from leaking from the perforation 131 to between the waterproof board 13 and the secondary lining, in the present disclosure, the outer diameter of the second sealing plate 32 is greater than the maximum outer diameter of the first sealing ring 31. After the first sealing ring 31 is inserted into the perforation 131, the second sealing plate 32 contacts the wall surface of the waterproof board 13 close to the tunnel clearance area to further seal the perforation 131 by the second sealing plate 32. In the surface of the second sealing plate 32 close to the first sealing ring 31, the part located outside the outer circle of the first sealing ring 31 is the sealing end face 321, and the surface far from the first sealing ring 31 is the installation end face 322.

[0030] Refer to Figure 4 and Figure 5 , in some embodiments of the present application, the lifting assembly 2 further includes a rotating rod 23 parallel to the first direction X. The rotating rod 23 is located at the exposed end 212 of the anchor rod 21, and the rotating rod 23 is directly or indirectly rotatably connected to the anchor rod 21. In the present disclosure, the rotating rod 23 is indirectly rotatably connected to the anchor rod 21 by being rotatably connected to the seal 3. Specifically, a connecting ring 323 is integrally protruded on the installation end face 322 of the second sealing plate 32. An annular T-shaped groove 324 is opened at one end of the connecting ring 323 far from the second sealing plate 32. A T-shaped rotating ring 325 adapted to the T-shaped groove 324 is integrally protruded at one end of the rotating rod 23 close to the seal 3; by the rotation of the rotating ring 325 in the T-shaped groove 324, the rotation of the rotating rod 23 along the seal 3 is realized, and thus the rotation of the rotating rod 23 along the anchor rod 21 can be realized; The lifting block 22 is directly or indirectly installed on the rotating rod 23. The lifting block 22, the second sealing plate 32, and the first sealing ring 31 are sequentially distributed in the direction from the outer leakage end 212 to the insertion end 211. When inserting the anchor inserting rod 21, first fix the rotating rod 23 to the anchor inserting rod 21, and then rotate the rotating rod 23 to achieve the state where the anchor inserting rod 21 rotates synchronously with the rotating rod 23. After the anchor inserting rod 21 is in place, rotate the rotating rod 23 under the secondary lining steel bars 14.

[0031] Referring to Figure 4 and Figure 5 In order to realize the unlocking and fixing between the rotating rod 23 and the anchor inserting rod 21, in some embodiments of the present application, it further includes a locking rod 4 having a plugging end 41 and a driving end 42. The locking rod 4 can directly or indirectly slide along the anchor inserting rod 21 in the first direction X. A plugging slot 231 is provided at one end of the rotating rod 23 close to the insertion end 211. In a plane perpendicular to the first direction X, the cross-section of the plugging slot 231 is consistent with the cross-section of the locking rod 4 and is non-circular, so that after the locking rod 4 is adaptively inserted into the plugging slot 231, the locking rod 4 can drive the rotating rod 23 to rotate synchronously. When it is necessary to enable the rotating rod 23 and the anchor inserting rod 21 to rotate relative to each other, just pull out the locking rod 4 from the plugging slot 231, and the rotating rod 23 can be rotated along the anchor inserting rod 21. In the present disclosure, the groove wall of the plugging slot 231 and the cross-section of the locking rod 4 perpendicular to the first direction X are regular hexagons, and the locking rod 4 is coaxially arranged with the anchor inserting rod 21.

[0032] In the present disclosure, the connection manner between the locking rod 4 and the anchor inserting rod 21 is specifically as follows: A sliding slot 326 is provided on the sealing member 3. One end of the locking rod 4 passes through the sliding slot 326 so that the sliding of the locking rod 4 along the first direction X is guided by the groove wall of the sliding slot 326, and the other end of the locking rod 4 can be plugged into and unplugged on the rotating rod 23. That is to say, the locking rod 4 in the present application is indirectly slidably connected to the locking rod 4 through the sealing member 3.

[0033] Referring to Figure 4 、 Figure 5 and Figure 6 In order to unlock or lock the locking rod 4, in some embodiments of the present application, it further includes an unlocking assembly 5. In order to install the unlocking assembly 5, a receiving chamber 33 is provided in the sealing member 3. The unlocking assembly 5 includes a rotating seat 51 located in the receiving chamber 33. The rotating seat 51 is hinged to the inner wall of the sealing member 3 through a torsion spring 511. The rotation axis of the rotating seat 51 along the sealing member 3 is perpendicular to the first direction X, so that the rotating seat 51 can be adjusted between an unlocking posture and a locking posture; along the rotation axis of the rotating seat 51 along the sealing member 3, it is located on one side of the locking rod 4 close to the outer peripheral wall of the second sealing plate 32; The unlocking assembly 5 further includes two telescopic rods 52. The telescopic rod 52 has a fixed end 521 and a free end 522. One telescopic rod 52 is a lifting telescopic rod 52a, and the other telescopic rod 52 is a pressing telescopic rod 52b. There is one telescopic rod 52 on each side of the rotating seat 51 along the direction of its own rotation axis. Specifically, the fixed end 521 of the telescopic rod 52 is fixedly connected to the rotating seat 51. The free end 522 of the lifting telescopic rod 52a is hinged to the locking rod 4. The hinge axis of the lifting telescopic rod 52a and the locking rod 4 is parallel to the rotation axis of the rotating seat 51 along the sealing member 3. The pressing telescopic rod 52b is located on the side of the rotating seat 51 away from the lifting telescopic rod 52a. The unlocking assembly 5 further includes a pressing member 53. The free end 522 of the pressing telescopic rod 52b is hinged to the pressing member 53. The rotation axis of the pressing member 53 along the pressing telescopic rod 52b is parallel to the rotation axis of the rotating seat 51 along the sealing member 3. One end of the pressing member 53 connected to the pressing telescopic rod 52b is located in the accommodation chamber 33, and the other end passes through the sealing end face 321 of the second sealing plate 32 and can slide along the second sealing plate 32 in the first direction X. For this purpose, a guiding groove 34 for guiding the sliding of the pressing member 53 in the first direction X is provided on the sealing member 3. When the pressing member 53 is moved from the insertion end 211 to the exposed end 212, the locking rod 4 will be driven by the rotating seat 51 and the two telescopic rods 52 to be pulled out from the insertion and extraction slot 231. When the rotating seat 51 is in the locked posture, one end of the pressing member 53 extends outside the second sealing plate 32 after passing through the guiding groove 34, and the other end is located in the accommodation chamber 33 and is connected to the pressing telescopic rod 52b. At this time, the locking rod 4 is located in the insertion and extraction slot 231. When it is necessary to adjust the rotating seat 51 from the locked posture to the unlocked posture, only need to press the pressing member 53 into the accommodation chamber 33. Under the lever acting force formed by the rotating seat 51 and the two telescopic rods 52, the locking rod 4 will move towards the insertion end 211 to pull out the locking rod 4 from the insertion and extraction slot 231. When in the unlocked posture, the torsion spring 511 has a force to drive the rotating seat 51 to reset to the locked posture.

[0034] Refer to Figure 5 、 Figure 6 and Figure 7, in some embodiments of the present application, the pressing member 53 is an annular structure coaxial with the anchor insertion rod 21, and the guiding groove 34 is also an annular groove structure communicating with the accommodating chamber 33; since the guiding groove 34 divides the second sealing plate 32 into a non-touching sealing structure one 32a and a sealing structure two 32b, the sealing structure one 32a is the part connected to the first sealing ring 31, and the sealing structure two 32b is the other part; for this reason, a connecting rod 35 is provided in the accommodating chamber 33, one end of which is integrally and fixedly connected to the sealing structure one 32a, and the other end is integrally and fixedly connected to the sealing structure two 32b; in the present disclosure, the rotating seat 51 is rotatably connected to the connecting rod 35; in order to improve the sealing performance, a ring groove 132 for the pressing member 53 to be inserted into is provided on the waterproof plate 13 used in cooperation with the lifting and correcting device in the present application; during use, when the anchor insertion rod 21 is inserted into the surrounding rock 11, the first sealing ring 31 is inserted into the through hole 131 of the waterproof plate 13, and the pressing member 53 is inserted into the ring groove 132 of the waterproof plate 13; during the process of inserting the anchor insertion rod 21, the bottom wall of the ring groove 132 will push the pressing member 53 downward, so that the locking rod 4 is pulled out from the insertion and extraction groove 231, and the seal 3 and the rotating rod 23 can be unlocked.

[0035] Referring to Figure 8 and Figure 9 , after unlocking the seal 3 and the rotating rod 23, the rotating rod 23 can be rotated to rotate the lifting block 22 mounted on the rotating rod 23 below the secondary lining steel bar 14; then, move the lifting block 22 toward the insertion end 211 side, and the secondary lining steel bar 14 can be inserted into the embedding groove 221 on the lifting block 22, and the secondary lining steel bar 14 can be lifted upward by the lifting block 22.

[0036] In order to insert the secondary lining steel bar 14 into the embedding groove 221 on the lifting block 22 and lift the secondary lining steel bar 14 upward, in some embodiments of the present application, a moving assembly 6 is further included. The moving assembly 6 includes an outer sleeve 61, the outer sleeve 61 is coaxially sleeved on the outer peripheral wall of the rotating rod 23, the outer sleeve 61 is threadedly connected to the rotating rod 23, and the lifting block 22 is fixedly connected to the outer sleeve 61; When it is necessary to insert the secondary lining steel bar 14 into the embedding groove 221 on the lifting block 22 and lift the secondary lining steel bar 14 upward, only by relatively rotating the rotating rod 23 along the outer sleeve 61, the lifting block 22 can be moved toward the insertion end 211 side to lift the secondary lining steel bar 14.

[0037] Referring to Figure 8 and Figure 9, after lifting the secondary lining steel bar 14 to the required height, the secondary lining concrete construction can be carried out; during the secondary lining concrete construction process, concrete is usually poured between the waterproof board 13 and the formwork trolley. During this process, the surrounding rock 11 may seep water. If the amount of water seepage is too large, although the waterproof board 13 is laid, the water seepage caused by the rupture of the waterproof board 13 due to geological disasters or the movement of the surrounding rock 11 requires the construction to be stopped and replanned. However, since concrete is poured between the waterproof board 13 and the formwork trolley at this time, and when the concrete is not solidified, water can be directly mixed into the concrete instead of leaking to the inside of the formwork trolley, resulting in the inability to monitor and warn the water seepage in time; therefore, in order to warn of water seepage, in some embodiments of the present application, the entire lifting and correction device can exist as a structure for water seepage warning; Specifically, a first drainage hole 36 is provided on the first sealing ring 31, one end of the first drainage hole 36 is communicated with the accommodating chamber 33, and the other end passes through an end of the first sealing ring 31 away from the second sealing plate 32, so that water in the surrounding rock 11 flows into the accommodating chamber 33 after passing through the first drainage hole 36. That is to say, the present application introduces water into the accommodating chamber 33, and due to the presence of the annular pressing member 53, and the pressing member 53 can extend into the annular groove 132 of the waterproof plate 13, it can prevent water from being discharged from the accommodating chamber 33 to the contact point between the second sealing plate 32 and the waterproof plate 13; In order to drain the water from the accommodating chamber 33, a second drainage hole 43 is formed through the outer peripheral wall of the locking rod 4 along the first direction X, so that the water in the accommodating chamber 33 can be drained from the second drainage hole 43; In order to drain the water in the second drain hole 43 , the plug-in slot 231 in the present disclosure is arranged through the rotating rod 23 along the first direction X; The water passes through the first drainage hole 36 and enters the accommodating chamber 33 , then enters the plug-in slot 231 through the second drainage hole 43 , and finally is discharged from the plug-in slot 231 .

[0038] The implementation principle of the pulling and correction device for the embedded steel bars of the secondary lining according to the embodiment of the present application is as follows: first, the anchor rod 21 is rotated and inserted into the surrounding rock 11 until the first sealing ring 31 is inserted into the through hole 131 and the pressing piece 53 is inserted into the annular groove 132, so that the anchor rod 21 can be put in place. At this time, the rotating rod 23 has been unlocked, and then the rotating rod 23 is rotated until the embedding groove 221 is located below the secondary lining steel bars 14; then, the personnel fixes the outer sleeve 61 with one hand and rotates the rotating rod 23 with the other hand, so that the outer sleeve 61 can pull the secondary lining steel bars 14 upward.

[0039] The embodiment of the present application also discloses a method for pulling and correcting the pre-embedded steel bars of the secondary lining. The method for pulling and correcting the pre-embedded steel bars of the secondary lining comprises the following steps: S1: Drive the anchor rod 21 into the surrounding rock 11 until the lifting block 22 contacts the secondary lining steel bar 14. Then, continue to move the lifting block 22 towards the side of the surrounding rock 11 until the lifting block 22 lifts the secondary lining steel bar 14 to the preset position; The calculation formula for the depth Rt of inserting the anchor rod into the surrounding rock is as follows: Rt = 0.8 * 3.1415 * d1 * L * f, where: d1 is the diameter of the anchor rod hole; F is the characteristic value of the bonding strength between the mortar and the rock, and the specific data is obtained by conducting a pull-out test on the inserted anchor rod; Rt is the force required to lift the secondary lining steel bar; L is the depth of the anchor rod inserted into the rock. According to the formula Rt = 0.8 * 3.1415 * d1 * L * f, the depth of the anchor rod inserted into the rock can be calculated.

[0040] S2: Repeat S1 until multiple points of the depressed secondary lining steel bar 14 are lifted to the preset position; The number of anchor rods 21 driven in is usually 5, that is, one anchor rod 21 is driven into the top of the secondary lining steel bar 14, and two anchor rods 21 are driven into each of the two side clearance surfaces.

[0041] The above are all the preferred embodiments of this application. The protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application shall be covered within the protection scope of this application.

Claims

1. A lifting and correction device for secondary lining embedded steel bars, characterized in that: include: A lifting assembly (2), the lifting assembly (2) comprising an anchor rod (21) arranged parallel to the first direction X; as well as A lifting block (22) for lifting the secondary lining steel bars (14), wherein the lifting block (22) is directly or indirectly mounted on the anchor rod (21), and the lifting block (22) extends in a second direction to a side away from the anchor rod (21), wherein the second direction is perpendicular to the first direction X.

2. The lifting and correction device for the secondary lining embedded steel bars according to claim 1 is characterized in that: Also included is a sealing member (3) having a first sealing ring (31); The first sealing ring (31) is coaxially fixedly connected to the anchor rod (21); one end of the anchor rod (21) is an insertion end (211) and the other end is an external leakage end (212); the outer diameter of the first sealing ring (31) gradually decreases in the direction from the external leakage end (212) to the insertion end (211); The sealing member (3) is located on a side of the lifting block (22) close to the insertion end (211).

3. The lifting and correction device for the secondary lining embedded steel bars according to claim 2 is characterized in that: The sealing member (3) further comprises a second sealing plate (32) integrally arranged with the first sealing ring (31); The second sealing plate (32) is coaxially arranged and connected to the end surface of the first sealing ring (31) away from the insertion end (211), and the outer diameter of the second sealing plate (32) is greater than the maximum outer diameter of the first sealing ring (31); The wall surface of the second sealing plate (32) close to the insertion end (211) and located on the outer circle of the first sealing ring (31) is a sealing end surface (321).

4. The lifting and correction device for the secondary lining embedded steel bars according to claim 3 is characterized in that: The lifting component (2) also includes: A rotating rod (23), the rotating rod (23) being directly or indirectly coaxially rotatably connected to the external leakage end (212) of the anchor rod (21); The lifting block (22) is connected to the rotating rod (23) so that the lifting block (22) is indirectly mounted on the anchor rod (21).

5. The lifting and correction device for the secondary lining embedded steel bars according to claim 4 is characterized in that: Also includes: A locking rod (4) having an insertion end (41) and a driving end (42), wherein the locking rod (4) is slidably connected to the sealing member (3) along a first direction X; the insertion end (41) of the locking rod (4) is non-circular in cross section along a direction perpendicular to the first direction X, and an insertion groove (231) adapted to the insertion end (41) is provided at one end of the rotating rod (23) close to the insertion end (211); and An unlocking assembly (5) is mounted on the sealing member (3), and the unlocking assembly (5) is used to drive the locking rod (4) to slide back and forth along the sealing member (3) in a first direction X so as to insert and remove the locking rod (4) along the rotating rod (23).

6. The lifting and correction device for the secondary lining embedded steel bars according to claim 5, characterized in that: The sealing member (3) has a containing chamber (33); the unlocking assembly (5) comprises: A rotating seat (51) elastically hinged along the sealing member (3) in the accommodating chamber (33) by a torsion spring (511), so that the rotating seat (51) can be adjusted between a locked posture and an unlocked posture, and the rotating seat (51) is perpendicular to a first direction X along the rotation axis of the sealing member (3); A telescopic rod (52) having a fixed end (521) and a free end (522), wherein the fixed end (521) of the telescopic rod (52) is fixedly connected to the rotating seat (51); the rotating seat (51) is provided with one telescopic rod (52) on each side along its own rotating axis, wherein one of the telescopic rods (52) is a lifting telescopic rod (52a), and the other telescopic rod (52) is a pressing telescopic rod (52b); and A pressing member (53), one end of which is hinged to the free end (522) of the pressing telescopic rod (52b), and the other end of which is passed through the sealing end surface (321) of the second sealing member (3); The locking rod (4) is hinged to the free end (522) of the lifting and telescopic rod (52a); When the rotating seat (51) is in a locked position, the locking rod (4) is inserted into the plug-in slot (231), and one end of the pressing member (53) passes through the sealing end surface (321) and extends to the outside of the second sealing plate (32); When the rotating seat (51) is in an unlocking posture, the locking rod (4) is located outside the plug-in slot (231), and the torsion spring (511) has a force that drives the rotating seat (51) to rotate from the unlocking posture to the locking posture.

7. The lifting and correction device for the secondary lining embedded steel bars according to claim 6 is characterized in that: The pressing member (53) is annular and coaxially arranged with the first sealing ring (31); the second sealing plate (32) is provided with an annular groove on the sealing end surface (321) for accommodating the pressing member (53); An end wall of the second sealing plate (32) away from the first sealing ring (31) is a mounting end surface (322), and a connecting rod (35) is provided in the accommodating chamber (33), one end of which is fixedly connected to the mounting end surface (322) and the other end of which is fixedly connected to the first sealing ring (31).

8. The lifting and correction device for the secondary lining embedded steel bars according to claim 7 is characterized in that: The first sealing ring (31) is provided with a first drainage hole (36) having one end communicating with the accommodating chamber (33) and the other end penetrating the end wall of the first sealing ring (31) close to the insertion end (211); The plug-in slot (231) penetrates the rotating rod (23) in a direction; The locking rod (4) is provided with a second drainage hole (43) at one end thereof connected to the accommodating chamber (33) and at the other end thereof connected to the plug-in slot (231).

9. A lifting and correction device for secondary lining embedded steel bars according to any one of claims 4 to 8, characterized in that: It also includes an outer sleeve (61), which is coaxially threadedly connected to the outer peripheral wall of the rotating rod (23), and the lifting block (22) is fixedly connected to the outer sleeve (61).

10. A method for lifting and correcting the secondary lining embedded steel bars using the lifting and correction device according to any one of claims 1 to 9, comprising the following steps: S1: driving an anchor rod (21) into the surrounding rock (11) until the lifting block (22) contacts the secondary lining steel bar (14), and then continuing to move the lifting block (22) toward one side of the surrounding rock (11) until the lifting block (22) lifts the secondary lining steel bar (14) to a preset position; S2: Repeat S1 until the multiple points of the pressed second lining steel bars (14) are lifted to the preset positions.

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