System and construction method for reinforcing deteriorated lining of operating tunnel by local replacement

Abstract

The application provides an operating tunnel deteriorated lining local replacement and reinforcement system and a construction method, adopts light mobile operation platform rapid construction technology, adopts deteriorated lining local spray dust removal and residue connection technology, and adopts hoisting formwork bottom pressure grouting concrete technology.The main construction steps include: (1) light mobile operation platform installation; (2) hoisting type deteriorated lining chiseling and residue connection device installation; (3) deteriorated lining local spray dust removal; (4) deteriorated lining chiseling and bar planting; (5) hoisting type formwork installation; and (6) concrete pouring.The application improves operating tunnel cavity improvement efficiency, guarantees construction safety, pays attention to construction environment protection, and has good social and economic benefits when applied to practical engineering.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of deteriorated lining reinforcement construction, in particular to a local replacement and reinforcement system for deteriorated lining of an operating tunnel and a construction method. BACKGROUND

[0002] Due to the geological conditions, construction technology, construction equipment and other factors, various defects will inevitably occur in the tunnel. Insufficient lining thickness or cavity is one of the most common defects of the tunnel. The existence of the cavity will affect the stress distribution of the surrounding rock, cause stress concentration, make the lining near the cavity loose, and easily form a falling block, especially the cavity at the top of the arch, which will seriously threaten the safety of driving.

[0003] In the conventional repair process of deteriorated lining of an operating tunnel, there are problems of slow installation speed and poor adjustability of the operation platform, which reduces the repair speed and affects the normal operation of the tunnel. Moreover, in the process of removing the deteriorated lining, there is a lack of a spray dust removal device, resulting in a large amount of dust and a poor construction environment at the construction site. In addition, in the process of installing the formwork at the deteriorated part, the formwork is slow to install and remove, and the quality of concrete pouring is difficult to guarantee. Therefore, it is necessary to innovate the local replacement and reinforcement system for deteriorated lining of an operating tunnel and the construction method to guide future engineering construction. SUMMARY

[0004] The present application relates to the field of deteriorated lining reinforcement construction, in particular to a local replacement and reinforcement system for deteriorated lining of an operating tunnel and a construction method.

[0005] To solve the above technical problems, the present application provides a construction method for a local replacement and reinforcement system for deteriorated lining of an operating tunnel, comprising the following steps:

[0006] Step one, installation of a light movable operation platform: the light movable operation platform is installed at the temporary road surface below the deteriorated lining part of the tunnel, and the bottom plate of the light movable operation platform is connected with the construction platform through a plurality of telescopic support columns; a plurality of hoops provided with connecting sleeves are connected on the telescopic support columns, the crossbars, inclined rods and vertical rods are connected with each other through the connecting sleeves, the ends of the crossbars and vertical rods are provided with connecting plates, and the connecting plates are fixed with the inner wall of the tunnel;

[0007] Step two, installation of a hanging type deteriorated lining chiseling and slag receiving device: a hanging type deteriorated lining chiseling and slag receiving device is arranged below the deteriorated lining part of the tunnel; one end of the deteriorated lining collecting groove of the hanging type deteriorated lining chiseling and slag receiving device is grooved to form an operation port, and the other end is transmitted to the slag receiving barrel arranged on the temporary road surface through the slag receiving pipeline; lower end plates and upper end plates are symmetrically arranged on both sides of the deteriorated lining collecting groove, and the lower end plates are connected with the deteriorated lining collecting groove through the rib plates; second sliding rails are symmetrically arranged inside the deteriorated lining collecting groove, and the slag removing knives are slidably connected with the second sliding rails through the sliding supports;

[0008] Step three, partial spray dusting construction of deteriorated lining: the lower end plate of the hanging type deteriorated lining chiseling and slagging device is positioned and installed with a water tank and a lifting water pump through an L-shaped limiting device and limiting bolts, and water is guided to the water outlet branch pipe on the upper end plate through the water outlet main pipe along the water tank and the lifting water pump, and multi-angle nozzles are installed on the water outlet branch pipe, and the multi-angle nozzles are opened for spray dusting during the chiseling process;

[0009] Step four, deteriorated lining chiseling and bar planting: the hanging type deteriorated lining chiseling and slagging device is adjusted to the construction orientation by moving the first lifting rod, the deteriorated lining part of the tunnel is chiseled through the operation port, and the multi-angle nozzles are opened for spray dusting during the chiseling process, and the lining slag is pushed to the slagging pipe opening from left to right by using the slagging knife, and is collected in the slagging barrel; after the chiseling of the deteriorated lining part of the tunnel is completed, the bar planting is carried out on the part;

[0010] Step five, hanging type formwork installation: the second lifting rod is arranged around the formwork of the hanging type formwork system, the first limiting ring is arranged at one end of the second lifting rod, and the second limiting ring is arranged at the other end, and the first limiting ring is fixed to the tunnel;

[0011] Step six, concrete pouring: the concrete delivery pump arranged on the light movable operation platform is connected with the grouting pipe for grouting, so as to complete the concrete pouring construction of the deteriorated lining part of the tunnel, and water is sprayed for maintenance after the construction is completed.

[0012] The beneficial effects of the present application are as follows:

[0013] 1. The light movable operation platform fast construction technology is adopted in the present application, the horizontal guardrail is moved upward by rotating the knob in the forward direction, the electric push rod provides upward thrust, the vertical telescopic guardrail is elongated, and the height of the horizontal guardrail is accurately adjusted by using the jack; the horizontal guardrail is moved downward by rotating the knob in the reverse direction, the electric push rod reduces the upward thrust, the vertical telescopic guardrail is shortened, and the height of the horizontal guardrail is accurately adjusted by using the jack, so that the flexibility of the arrangement of the operation platform and the safety of the construction are improved.

[0014] 2. The deteriorated lining partial spray dusting and slagging technology is adopted in the present application, the hanging type deteriorated lining chiseling and slagging device is adjusted to the construction orientation by moving the lifting rod 1, the worker stands on the light movable operation platform, the deteriorated lining part of the tunnel is chiseled through the operation port, the multi-angle nozzles are opened for spray dusting during the chiseling process, and the lining slag is pushed to the slagging pipe opening from left to right by using the slagging knife, and is collected in the slagging barrel, so that the efficiency of slagging and the environmental protection of the construction environment are improved.

[0015] 3, The present application adopts the technology of pouring concrete at the bottom of the hanging formwork, when the hanging formwork system is installed, the displacement of the formwork is adjusted up and down by the motor, the formwork is fixed tightly with the tunnel by the support of the formwork, the limiting bolt is adjusted, the arc positioning block is tightly pressed on the grouting pipe, the concrete pouring construction of the deteriorated lining part of the tunnel is completed by the concrete delivery pump arranged on the light movable operation platform, and the quality of the concrete pouring is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 Fig. 1 is a schematic diagram of the light movable operation platform arranged in the tunnel;

[0017] Figure 2 Fig. 2 is a structural schematic diagram of the light movable operation platform;

[0018] Figure 3 Fig. 3 is a schematic diagram of the light movable operation platform;

[0019] Figure 4 Fig. 4 is a schematic diagram of the hanging deteriorated lining removal and residue connecting device arranged in the tunnel;

[0020] Figure 5 Fig. 5 is a structural schematic diagram of the hanging deteriorated lining removal and residue connecting device;

[0021] Figure 6 Fig. 6 is a schematic diagram of the hanging deteriorated lining removal and residue connecting device;

[0022] Figure 7 Fig. 7 is a schematic diagram of the installation of the hanging formwork system in the tunnel;

[0023] Figure 8 Fig. 8 is a schematic diagram of pouring concrete at the bottom of the hanging formwork system;

[0024] Figure 9 Fig. 9 is a structural schematic diagram of the hanging formwork system.

[0025] In the figure: 1 - temporary road surface, 2 - tunnel, 3 - light mobile operation platform, 4 - tunnel deteriorated lining part, 5 - bottom plate, 6 - telescopic support column, 7 - connecting plate, 8 - cross bar, 9 - connecting sleeve, 10 - inclined rod, 11 - jack, 12 - sliding groove, 13 - first sliding block, 14 - second sliding block, 15 - transverse guardrail, 16 - sliding plate, 17 - electric push rod, 18 - knob, 19 - bracket, 20 - hoop, 21 - construction platform, 22 - vertical telescopic guardrail, 23 - vertical rod, 24 - first sliding rail, 25 - suspended deteriorated lining removal and slag receiving device, 26 - slag receiving bucket, 27 - lower end plate, 28 - upper end plate, 29 - first lifting rod, 30 - operation port, 31 - second sliding rail, 32 - sliding support, 33 - slag removing knife, 34 - deteriorated lining collecting groove, 35 - slag receiving pipeline, 36 - multi-angle spray head, 37 - rib plate, 38 - L-shaped limiting device, 39 - limiting bolt, 40 - water tank, 41 - water outlet main pipe, 42 - lifting water pump, 43 - water outlet branch pipe, 44 - planted reinforcement, 45 - suspended formwork system, 46 - limiting ring 1, 47 - second lifting rod, 48 - jacking plate, 49 - telescopic rod, 50 - motor, 51 - limiting ring 2, 52 - grouting pipe, 53 - inclined support, 54 - reserved groove, 55 - arc-shaped positioning block, 56 - formwork support, 57 - positioning frame, 58 - concrete delivery pump, 59 - formwork. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments in the present application belong to the scope of protection of the present application.

[0027] It should be understood by those skilled in the art that in the disclosure of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the above terms cannot be understood as a limitation of the present application.

[0028] It can be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of one element can be one, and in another embodiment, the number of the element can be multiple, and the term "one" cannot be understood as a limitation on the number.

[0029] As Figures 1-9The application provides a construction method of operating a tunnel deteriorated lining partial replacement and reinforcement system, and comprises the following steps.

[0030] Step one, light mobile operation platform installation: the light mobile operation platform 3 is installed at the temporary road surface 1 below the tunnel deteriorated lining part 4, the bottom plate 5 of the light mobile operation platform 3 is connected with the construction platform 21 through welding of a plurality of telescopic support columns 6; a plurality of hoops 20 provided with connecting sleeves 9 are arranged on the telescopic support columns 6 through bolt connection, the cross bars 8, the inclined bars 10 and the vertical bars 23 are all connected with each other through the connecting sleeves 9, the end of the cross bar 8 and the vertical bar 23 is provided with a connecting plate 7, and the connecting plate 7 is fixed with the inner wall of the tunnel 2 through bolt connection; the slide plates 16 are symmetrically installed on both sides of the construction platform 21, a pair of first sliding blocks 13 are installed on the transverse guardrails 15, the first sliding blocks 13 are movably arranged in the sliding grooves 12 of the slide plates 16, and a plurality of vertical telescopic guardrails 22 are uniformly arranged below the transverse guardrails 15 and fixed with the construction platform 21 through bolt connection, so as to form a safe protection platform for workers to work; the jack 11 is arranged between the first sliding block 13 and the second sliding block 14, the electric push rod 17 is provided with the knob 18 at one end and connected to the second sliding block 14 at the other end, and the electric push rod 17 is fixed through the support 19; during construction, the knob 18 is rotated forward, the electric push rod 17 provides upward thrust, the transverse guardrails 15 are pushed upward by the first sliding block 13 and the second sliding block 14, the vertical telescopic guardrails 22 are elongated, and the distance between the first sliding block 13 and the second sliding block 14 is adjusted through the jack 11, so as to accurately adjust the elevation of the transverse guardrails 15; the knob 18 is rotated reversely, the electric push rod 17 reduces the upward thrust, the transverse guardrails 15 are moved downward, the vertical telescopic guardrails 22 are shortened, and the elevation of the transverse guardrails 15 is accurately adjusted through the jack 11.

[0031] Step two, installation of the hanging type deteriorated lining removal and slag receiving device: the hanging type deteriorated lining removal and slag receiving device 25 is arranged below the tunnel deteriorated lining part 4, the first boom 29 of the hanging type deteriorated lining removal and slag receiving device 25 is slidably connected with the first sliding rail 24 arranged on the tunnel 2; the deteriorated lining collecting groove 34 of the hanging type deteriorated lining removal and slag receiving device 25 is provided with the operation port 30 at one end, so as to facilitate workers to remove the deteriorated lining, and the other end is transmitted to the slag receiving barrel 26 arranged on the temporary road surface 1 through the slag receiving pipeline 35, the lower end plate 27 and the upper end plate 28 are symmetrically arranged on both sides of the deteriorated lining collecting groove 34, and the lower end plate 27 is connected with the deteriorated lining collecting groove 34 through the rib plate 37; the second sliding rail 31 is symmetrically arranged in the deteriorated lining collecting groove 34, and the slag removing knife 33 is slidably connected with the second sliding rail 31 through the sliding support 32.

[0032] Step three, partial spray dusting construction of deteriorated lining: the lower end plate 27 of the suspended deteriorated lining chiseling and slag receiving device 25 is positioned and installed with a water tank 40 and a lifting water pump 42 through an L-shaped limiting device 38 and a limiting bolt 39, and water is sequentially introduced to the water outlet branch pipe 43 of the upper end plate 28 through the water outlet main pipe 41, a multi-angle spray head 36 is installed on the water outlet branch pipe 43, and the multi-angle spray head 36 is opened to spray and remove dust during chiseling.

[0033] Step four, chiseling and rebar planting of deteriorated lining: the suspended deteriorated lining chiseling and slag receiving device 25 is adjusted to the construction orientation by moving the first lifting rod 29, workers stand on the light movable operation platform 3, chiseling is performed on the deteriorated lining part 4 of the tunnel through the operation port 30, the multi-angle spray head 36 is opened to spray and remove dust during chiseling, and the slag is pushed into the slag receiving pipe 35 from left to right by the slag removing knife 33, and then collected in the slag receiving barrel 26. After the chiseling of the deteriorated lining part 4 of the tunnel is completed, rebar planting 44 is performed on the part.

[0034] Step five, installation of suspended formwork: the formwork 59 of the suspended formwork system 45 is arranged around the second lifting rod 47, a first limiting ring 46 is arranged at one end of the second lifting rod 47, and a second limiting ring 51 is arranged at the other end, the first limiting ring 46 is fixed to the tunnel 2 through a bolt, the second limiting ring 51 is connected to the movable jacking plate 48 through the telescopic rod 49, the length of the telescopic rod 49 is adjusted by the motor 50, that is, the elevation of the formwork 59 is changed; the formwork support 56 is placed in the reserved groove 54 opened on the back side of the formwork 59 and fixed to the tunnel 2 through a bolt; when the suspended formwork system 45 is installed, the displacement of the formwork 59 is adjusted up and down by the motor 50, and the formwork 59 is tightly fixed to the tunnel 2 by the formwork support 56.

[0035] Among them, the formula of the motor 50 and the telescopic rod 49 can adopt the form of an electric push rod, and the jacking plate 48 is connected to the formwork 59, so that when the telescopic rod 49 is extended or retracted, the formwork 59 can be directly driven by the jacking plate 48 to rise and fall along the second lifting rod 47.

[0036] Step six, concrete pouring: a pair of positioning frames 57 are arranged on the back side of the formwork 59, the connection between the positioning frames 57 and the formwork 59 is strengthened by the inclined support 53, limiting bolts 39 are arranged on the positioning frames 57, the end of the limiting bolt is welded with an arc-shaped positioning block 55, the arc-shaped positioning block 55 is tightly jacked by adjusting the limiting bolt 39, and the grouting pipe 52 is connected to the grouting pipe 52 by the concrete delivery pump 58 arranged on the light movable operation platform 3 to complete the concrete pouring construction of the deteriorated lining part 4 of the tunnel, and the construction is completed. After that, water is sprayed for maintenance.

[0037] The scheme also discloses an operation tunnel deterioration lining partial replacement reinforcing system, comprising a light movable operation platform 3, a hanging type deterioration lining chiseling and slagging device 25 and a hanging type formwork system 45; the light movable operation platform 3 is installed below a temporary road surface 1 of a tunnel deterioration lining part 4, a bottom plate 5 of the light movable operation platform 3 is connected with a construction platform 21 through a telescopic support column 6 welded thereon; a plurality of hoops 20 provided with connecting sleeves 9 are arranged on the telescopic support column 6 through bolt connection; a horizontal rod 8, an inclined rod 10 and a vertical rod 23 are all connected with each other through the connecting sleeves 9; the horizontal rod 8 and the vertical rod 23 are both provided with connecting plates 7 at the ends, the connecting plates 7 are fixed with the tunnel 2 through bolts; a slide plate 16 is symmetrically installed on both sides of the construction platform 21; a pair of first sliding blocks 13 are installed on a horizontal guardrail 15, are arranged in a sliding groove 12 provided on the slide plate 16 and are evenly arranged below the horizontal guardrail 15 and are fixed with the construction platform 21 through bolts, so as to form a safe protection platform for workers to work; a jack 11 is arranged between the first sliding block 13 and a second sliding block 14; a knob 18 is arranged at the end of an electric push rod 17 and is connected with the bottom of the second sliding block 14 through a support 19; during construction, the knob 18 is rotated forward, the electric push rod 17 provides upward thrust, the horizontal guardrail 15 moves upward, the vertical telescopic guardrail 22 is elongated and the elevation of the horizontal guardrail 15 is accurately adjusted through the jack 11; the knob 18 is rotated reversely, the electric push rod 17 reduces the upward thrust, the horizontal guardrail 15 moves downward, the vertical telescopic guardrail 22 is shortened and the elevation of the horizontal guardrail 15 is accurately adjusted through the jack 11.

[0038] The hanging type deteriorated lining removal and slag receiving device 25 is arranged below the deteriorated lining part 4 of the tunnel, the first lifting rod 29 of the device is connected with the first sliding rail 24 arranged on the tunnel 2, and is transmitted to the slag receiving barrel 26 arranged on the temporary road surface 1 through the slag receiving pipeline 35; the deteriorated lining collecting groove 34 of the hanging type deteriorated lining removal and slag receiving device 25 is notched at one end to form the operation port 30, which facilitates workers to remove the deteriorated lining, the lower end plate 27 and the upper end plate 28 are symmetrically arranged on the two sides of the deteriorated lining collecting groove 34, and the lower end plate 27 is connected with the deteriorated lining collecting groove 34 through the rib plate 37; the water tank 40 and the lifting water pump 42 are positioned and arranged on the lower end plate 27 through the L-shaped limiting device 38 and the limiting bolt 39, and water is introduced from the lower end plate 27 to the water outlet branch pipe 43 of the upper end plate 28 through the water outlet main pipe 41, and the multi-angle spray head 36 is arranged on the water outlet branch pipe 43; the second sliding rail 31 is symmetrically arranged in the deteriorated lining collecting groove 34, and the slag removing knife 33 is connected with the second sliding rail 31 through the sliding support 32; when the hanging type deteriorated lining removal and slag receiving device 25 works, the device is adjusted to the construction position through the movement of the first lifting rod 29, the workers stand on the light movable operation platform 3, remove the deteriorated lining of the tunnel through the operation port 30, and spray and dust off through the multi-angle spray head 36 in the process of removal, and at the same time, the slag removing knife 33 is used to push the lining slag from left to right to the mouth of the slag receiving pipeline 35, until the lining slag is collected in the slag receiving barrel 26.

[0039] The hanging type formwork system 45 is installed after the removal of the deteriorated lining part 4 of the tunnel and the end of the planting of the reinforcing bars 44, the formwork 59 is arranged around the second lifting rod 47, the first limiting ring 46 is arranged at one end of the second lifting rod 47, and is fixed with the tunnel 2 through the bolt, the second limiting ring 51 is arranged at the other end, and is connected with the movable jacking plate 48 through the telescopic rod 49, the length of the telescopic rod 49 is adjusted by using the motor 50, that is, the elevation of the formwork 59 is changed; the formwork support 56 is arranged in the reserved groove 54 arranged on the back side of the formwork 59, and is fixed with the tunnel 2 through the bolt; a pair of positioning frames 57 are arranged on the back side of the formwork 59, the connection between the positioning frames 57 and the formwork 59 is strengthened through the inclined support 53, the limiting bolt 39 is arranged on the positioning frame 57, and an arc-shaped positioning block 55 is welded at the end of the limiting bolt 39 to accurately position the position of the grouting pipe 52; when the hanging type formwork system 45 is installed, the displacement of the formwork 59 is adjusted up and down through the motor 50, the formwork 59 is closely fixed with the tunnel 2 through the formwork support 56, the limiting bolt 39 is adjusted, the arc-shaped positioning block 55 jacks up the grouting pipe 52, and the concrete pouring construction of the deteriorated lining part 4 of the tunnel is completed by using the concrete delivery pump 58 arranged on the light movable operation platform 3.

[0040] The present application is not limited to the above-mentioned best mode, and anyone can derive other various forms of products under the inspiration of the present application, but regardless of any change in shape or structure, any technical solution with the same or similar to the present application falls within the protection scope of the present application.

Claims

1. A method of operating a system for reinforcing a deteriorated lining of a tunnel by partial replacement, characterized in that, Comprise the following steps: Step one, light mobile operation platform (3) installation: light mobile operation platform (3) is installed at the temporary road surface (1) below the tunnel deterioration lining part (4), the bottom plate (5) of light mobile operation platform (3) is connected with construction platform (21) through several telescopic support columns (6); several hoops (20) with connecting sleeve (9) are connected on telescopic support column (6), crossbar (8), inclined rod (10) and vertical rod (23) are all connected with each other through connecting sleeve (9), the end of crossbar (8) and vertical rod (23) is provided with connecting plate (7), and the connecting plate (7) is fixed with the inner wall of tunnel (2); Step two, hanging type deterioration lining chiseling and slag receiving device installation: the hanging type deterioration lining chiseling and slag receiving device (25) is arranged below the tunnel deterioration lining part (4); one end of the deterioration lining collecting groove (34) of the hanging type deterioration lining chiseling and slag receiving device (25) is notched to form an operating port (30), and the other end is transmitted into the slag receiving barrel (26) arranged on the temporary road surface (1) through the slag receiving pipeline (35); the lower end plate (27) and the upper end plate (28) are symmetrically installed on both sides of the deterioration lining collecting groove (34), and the lower end plate (27) is connected with the deterioration lining collecting groove (34) through the rib plate (37); the second slide rail (31) is symmetrically arranged in the deterioration lining collecting groove (34), and the slag removing knife (33) is slidably connected with the second slide rail (31) through the sliding support (32); Step three, local spray dust removal construction of deterioration lining: the lower end plate (27) of the hanging type deterioration lining chiseling and slag receiving device (25) is positioned and installed with the water tank (40) and the lifting water pump (42) through the L-shaped limiting device (38) and the limiting bolt (39), and the water is sequentially introduced to the water outlet branch pipe (43) of the upper end plate (28) through the water outlet main pipe (41) along the water tank (40) and the lifting water pump (42), the multi-angle spray head (36) is installed on the water outlet branch pipe (43), and the multi-angle spray head (36) is opened to spray and remove dust during the chiseling process; Step four, deterioration lining chiseling and bar planting: the hanging type deterioration lining chiseling and slag receiving device (25) is adjusted to the construction orientation by moving the first lifting rod (29), the tunnel deterioration lining part (4) is chiseled through the operating port (30), the multi-angle spray head (36) is opened to spray and remove dust during the chiseling process, the lining slag is pushed to the slag receiving pipeline (35) by the slag removing knife (33), and is collected in the slag receiving barrel (26); after the tunnel deterioration lining part (4) is chiseled, the bar (44) is planted in the part; Step five, hanging type formwork installation: the second lifting rod (47) is arranged around the formwork (59) of the hanging type formwork system (45), the first limiting ring (46) is arranged at one end of the second lifting rod (47), the second limiting ring (51) is arranged at the other end, and the first limiting ring (46) is fixed with the tunnel (2); Step six, concrete pouring: the concrete delivery pump (58) arranged on the light mobile operation platform (3) is connected with the grouting pipe (52) to perform grouting, so as to complete the concrete pouring construction of the tunnel deteriorated lining part (4), and water is sprayed for maintenance after the construction is completed.

2. The method of claim 1, wherein: In step one, the sliding plates (16) are symmetrically arranged on both sides of the construction platform (21), a pair of first sliding blocks (13) are arranged on the transverse guardrails (15), the first sliding blocks (13) are movably arranged in the sliding grooves (12) of the sliding plates (16), a plurality of vertical telescopic guardrails (22) are uniformly arranged below the transverse guardrails (15) and are fixed with the construction platform (21), so as to form the protection platform.

3. The method of claim 2, wherein: The jacks (11) are arranged between the first sliding blocks (13) and the second sliding blocks (14), one end of the electric push rod (17) is provided with the knob (18), the other end is connected to the second sliding blocks (14), the electric push rod (17) is fixed through the support (19); during construction, the knob (18) is rotated forward, the electric push rod (17) provides upward thrust, the first sliding blocks (13) and the second sliding blocks (14) push the transverse guardrails (15) to move upward, the vertical telescopic guardrails (22) are elongated, and the distance between the first sliding blocks (13) and the second sliding blocks (14) is adjusted by the jacks (11); the knob (18) is reversely rotated, the electric push rod (17) reduces the upward thrust, the transverse guardrails (15) move downward, and the vertical telescopic guardrails (22) are shortened.

4. The method of claim 1, wherein: In step five, the second limiting ring (51) and the movable tightening plate (48) are connected through the telescopic rod (49), the length of the telescopic rod (49) is adjusted by the motor (50), so that the elevation of the formwork (59) is changed; the formwork support (56) is arranged in the reserved grooves (54) arranged on the back side of the formwork (59) and is fixed with the tunnel (2); during installation of the hanging formwork system (45), the displacement of the formwork (59) is adjusted up and down by the motor (50).

5. The method of claim 1, wherein: In step six, a pair of positioning frames (57) are arranged on the back side of the formwork (59), the positioning frames (57) and the formwork (59) are connected through the inclined supports (53), the limiting bolts (39) are arranged on the positioning frames (57), the arc-shaped positioning blocks (55) are arranged at the ends of the limiting bolts (39), the arc-shaped positioning blocks (55) are tightened by adjusting the limiting bolts (39).

6. The method of claim 1, wherein: In step two, the first lifting rod (29) of the hanging deteriorated lining removal and slagging device (25) is slidably connected with the first sliding rail (24) arranged on the tunnel (2).

7. A system for operating a partial replacement and reinforcement of a deteriorated lining of a tunnel, characterized in that: The construction method of claim 1-6 is used to obtain the construction of the operation tunnel deteriorated lining partial replacement and reinforcement system.

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