Lining construction system and method suitable for side-through slope tunnel

Abstract

The invention relates to a lining construction system and method suitable for a side-through slope tunnel, and belongs to the technical field of tunnel engineering. In order to solve the problems that wriggling deformation of a slope body is caused by an existing side-penetrating slope reinforcing measure and the deformation effect influences a supporting structure, two brackets, a transverse supporting component and a vertical supporting component are arranged on a secondary lining structure of a tunnel, each bracket is arranged in the tunneling direction of the tunnel and connected with a secondary lining, and the transverse supporting component is connected with the vertical supporting component; the transverse supporting components are arranged in the width direction of the tunnel and erected between the two brackets, and at least one set of vertical supporting components are arranged and connected between the second lining and the transverse supporting components. According to the lining construction system, the phenomenon of stress concentration of the lining can be avoided, the maximum internal stress borne by the structure is effectively reduced, the requirement for arranging a ventilation system and an electric power system on a vault can be met, the novel lining construction system is fused with secondary lining construction, and the construction efficiency is improved while the tunnel lining strength is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel engineering, and in particular to a lining construction system and a construction method suitable for a side-penetrating slope tunnel. Background Art

[0002] With the development of highway traffic, more and more tunnels are built in mountainous areas. Generally speaking, the route selection of mountain tunnels will avoid crossing landslide geological bodies. During the excavation and construction of mountain tunnels, it is inevitable that they will cross the slope sideways. Due to the hidden existence of landslides and the limitations of understanding of landslides, tunnels are often built in ancient sliding bodies. When the tunnel crosses the slope sideways, the excavation disturbance will break the original stress balance state in the slope, thereby inducing slope deformation or even sliding. Especially during the construction of the entrance section of mountain tunnels, since the covering rock mass is mostly weak and broken accumulation, construction-induced slope sliding and tunnel collapse and other engineering problems often occur.

[0003] At present, the reinforcement measures and support structures of most side-crossing slope tunnels in engineering projects are still designed according to the conventional shallow buried eccentric pressure tunnels. The main purpose of the reinforcement measures is to prevent the slope from losing stability and sliding and to reduce the eccentric pressure load of the tunnel. It is not considered that excavating a tunnel in a reinforced slope may still cause creep deformation of the slope, and the influence of slope creep deformation on the support structure. The lining of the side-crossing slope tunnel is prone to cracking under the action of eccentric pressure load and additional lateral pressure caused by slope creep.

[0004] Therefore, a new tunnel lining construction system is proposed to resist the lateral additional surrounding rock pressure caused by slope creep deformation, providing a new solution for the initial masonry construction of side-penetrating slope tunnels. Summary of the invention

[0005] In order to solve the practical problems existing in the above-mentioned background technology, the present invention aims to provide a lining construction system and construction method suitable for side-crossing slope tunnels. By connecting the corbels, lateral support members, vertical support members and the secondary lining to form a whole, it has better overall bearing performance. The constructed lining structure can not only avoid the phenomenon of lining force concentration for side-crossing slope tunnels, effectively reduce the maximum internal stress of the structure, but also meet the requirements of setting up ventilation and power systems on the arch. The new lining construction system designed by the present invention is integrated into the traditional secondary lining construction process, which improves the construction efficiency while improving the tunnel lining strength.

[0006] The present invention achieves the above technical objectives by adopting the following technical solutions: The technical solution of the first aspect disclosed in the present invention is: a lining construction system suitable for a side-through slope tunnel, comprising a secondary lining in the tunnel, and further comprising: Corbels, two of which are provided, each of which is arranged along the tunneling direction and connected to the secondary lining; The transverse support members are arranged along the width direction of the tunnel and are arranged between two corbels; The vertical supporting members include at least one group and are connected between the secondary lining and the lateral supporting members.

[0007] As a further preferred solution of the above technical solution: the corbel includes a first embedded part, a first longitudinal steel bar, a first vertical stirrup and backfill concrete, the first embedded part is connected to the second lining, the first longitudinal steel bar and the first vertical stirrup are arranged on the first embedded part, and the backfill concrete is filled on the first longitudinal steel bar and the first vertical stirrup.

[0008] As a further preferred solution of the above technical solution: the lateral supporting member includes a cross beam and a top plate, and multiple cross beams are arranged along the excavation direction of the tunnel, and the two ends of each cross beam are respectively placed on two corbels, and the top plate is arranged between two adjacent cross beams.

[0009] Based on the above technical solution, further, a metal sheet is arranged between the cross beam and the corbel, and the gap between the cross beam and the secondary lining is filled with fire-fighting foam.

[0010] As a further preferred solution of the above technical solution: the vertical supporting member comprises a group, which includes a plurality of square steel members arranged in the middle of the tunnel vault along the tunnel excavation direction.

[0011] Based on the above technical solution, further, the top of the square steel piece 1 is connected to the second embedded part in the second lining through the square metal plate 1, and the bottom thereof is embedded in the cross beam or the top plate.

[0012] As a further preferred solution of the above technical solution: the vertical supporting members include two groups, which include a plurality of square steel members arranged on both sides of the tunnel vault along the tunnel excavation direction.

[0013] Based on the above technical solution, further, the top of the second square steel piece is connected to the third embedded part in the second lining through the second square metal plate, and the bottom is embedded in the beam or the top plate.

[0014] The technical solution of the second aspect disclosed in the present invention is: a lining construction method applicable to a side-through slope tunnel, which is used to implement any one of the above-mentioned lining construction systems applicable to a side-through slope tunnel, comprising the following steps: Step 1: Calculate the spacing of the beams according to the design load of the tunnel, and prefabricate the first embedded parts, the second embedded parts, the third embedded parts, the angle steels and the metal embedded plates; Step 2: Carry out initial support and surface treatment on the side arch wall of the tunnel, lay a waterproof layer on the treated side arch wall, and then tie steel bars on the waterproof layer; Step 3: Connect the first embedded part, the second embedded part / the third embedded part at the corresponding positions of the tied steel bars respectively; Step 4: Cast the secondary lining of the tunnel and remove the formwork after the secondary lining is cured; Step 5: Tie the crossbeam reinforcement and top plate reinforcement separately, and place square steel piece 1 / square steel piece 2 on the crossbeam reinforcement and top plate reinforcement, pour concrete to form the crossbeam and top plate, and complete the lining construction.

[0015] Preferably, in step 5, the process of forming the cross beam and the top plate is as follows: Tie the crossbeam reinforcement between the first embedded parts facing each other in the tunnel, and connect the metal embedded plate, angle steel and square steel part 1 / square steel part 2 to the crossbeam reinforcement; Tie the top plate reinforcement between adjacent crossbeam reinforcements, and connect the metal embedded plate, angle steel, and square steel piece 1 / square steel piece 2 to the top plate reinforcement corresponding to the second embedded part / third embedded part; Connect the top of the square steel piece 1 to the second lining through the second embedded piece, or connect the top of the square steel piece 2 to the second lining through the third embedded piece; Concrete is poured to form a cross beam and a top plate, and the square steel member 1 / square steel member 2 is formed in the cross beam or the top plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Aiming at the phenomenon that the construction of tunnel side-through slope will break the original stress balance in the slope and induce slope deformation or even sliding, the present invention arranges brackets, transverse support members and vertical support members to be connected with the secondary lining to form an overall structure with uniform force and enhanced rigidity, thereby increasing the transverse and longitudinal rigidity of the tunnel lining structure. At the same time, the initial force is no longer limited to the local area, but is dispersed on the overall structure. Under the conditions of lateral additional surrounding rock pressure and bias load of the side-through slope tunnel, the internal force distribution of the lining is more uniform, the deformation of the lining is effectively reduced, the local stress concentration phenomenon of the lining can be effectively avoided, the maximum internal force received by the tunnel lining structure is reduced, the problem of lateral additional surrounding rock pressure caused by slope creep deformation is effectively solved, and the overall bearing performance is better.

[0017] 2. The construction method of the present invention integrates the construction of a new lining structure into the traditional secondary lining construction process, which improves the strength of the tunnel lining while improving the construction efficiency. The construction method is low in difficulty and easy to maintain, which is of great significance to improving the durability and safety of side-through slope tunnels and reducing the difficulty of engineering operation and maintenance.

[0018] 3. The transverse support members and vertical support members located in the tunnel arch of the present invention, in addition to being connected with the secondary lining to improve the strength of the tunnel lining structure, also reserve installation space for the installation of ventilation equipment and circuit equipment. The installation of such a lining structure meets the requirements of installing ventilation equipment and power pipelines on the concrete roof at the top of the tunnel, achieving better ventilation effect and saving space. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required in the embodiments are briefly introduced below.

[0020] Figure 1 It is a structural schematic diagram of the straight wall type tunnel lining of the present invention; Figure 2 It is a structural schematic diagram of the curved wall tunnel lining of the present invention; Figure 3 It is a schematic diagram of the connection between the corbel and the secondary lining of a straight wall or curved wall tunnel of the present invention; Figure 4 It is a schematic diagram of the connection between the central square steel and the secondary lining of a straight wall or curved wall tunnel of the present invention; Figure 5 This is a schematic diagram of the structure of the square steel bottom connected to the crossbeam or top plate of the present invention; Figure 6 It is a structural schematic diagram of a large-section tunnel lining of the present invention; Figure 7 It is a schematic diagram of the connection between the square steel and the secondary lining of the large-section tunnel of the present invention; Figure 8 It is a schematic diagram of the lining structure construction method of the present invention; In the figure: 1. Second lining; 2. Corbel; 21. First embedded part; 22. First longitudinal reinforcement; 23. First vertical stirrup; 24. Backfill concrete; 3. Transverse supporting member; 31. Crossbeam; 311. Transverse stirrup; 312. Transverse through-length reinforcement; 313. Longitudinal reinforcement; 32. Top plate; 4. Vertical supporting member; 41. Square steel piece 1; 42. Square steel piece 2; 5. Metal sheet; 6. Fire foam; 7. Square metal plate 1; 8. Second embedded part; 9. Square metal plate 2; 10. Third embedded part; 11. Fireproof board; 12. Metal embedded plate; 13. Angle steel; 14. Metal plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical scheme and advantages of the present invention clearer, the technical scheme in the embodiments will be described clearly and completely in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments, not all of the embodiments. For ordinary technicians in this field, other embodiments can be obtained without creative work. Embodiment 1

[0022] Reference Figure 1-Figure 5 The present invention proposes a lining construction system suitable for a side-through slope tunnel, comprising a secondary lining 1, a corbel 2, a lateral support member 3 and a vertical support member 4 in the tunnel, wherein two corbels 2 are provided, each corbel 2 is arranged along the tunneling direction of the tunnel and connected to the secondary lining 1, the lateral support member 3 is arranged along the width direction of the tunnel, and the lateral support member 3 is erected between the two corbels 2, at least one group of vertical support members 4 is provided, and the vertical support member 4 is connected between the secondary lining 1 and the lateral support member 3, and the corbel 2, the lateral support member 3, the vertical support member 4 and the secondary lining 1 are connected to form an integral force system.

[0023] like Figure 3 As shown, the corbel 2 is arranged throughout the secondary lining 1. Specifically, the corbel 2 includes a first embedded part 21, a first longitudinal steel bar 22, a first vertical stirrup 23 and backfill concrete 24. The first embedded part 21 is U-shaped and connected to the secondary lining 1. That is, before pouring the secondary lining 1, the first embedded part 21 is connected to the secondary lining 1, and the first longitudinal steel bar 22 and the first vertical stirrup 23 are arranged on the first embedded part 21. After the formwork is supported, the backfill concrete 24 is poured on the first longitudinal steel bar 22 and the first vertical stirrup 23, and the corbel 2 is formed after the concrete solidifies.

[0024] like Figure 1-Figure 2 As shown, the transverse support member 3 includes a cross beam 31 and a top plate 32. A plurality of cross beams 31 are arranged along the excavation direction of the tunnel. The cross beam 31 is a precast concrete beam. The reinforcement of the cross beam 31 is in the form of transverse stirrups 311, transverse through-length bars 312 and longitudinal steel bars 313 for binding, and then concrete is poured to improve stability. The two ends of each formed cross beam 31 are respectively placed on the corbels 2 on both sides, and the top plate 32 is arranged between two adjacent cross beams 31. The top plate 32 is cast in place after steel bar binding. A metal sheet 5 is placed on the corbel 2, and the cross beam 31 is placed on the metal sheet 5 to reduce stress concentration. Fire foam 6 is used to fill the gap between the cross beam 31 and the secondary lining 1, and the bottom of the corbel 2 and the bottom of the cross beam 31 are covered with a fireproof board 11.

[0025] This embodiment is directed to conventional straight wall tunnels and arch wall tunnels, such as Figure 4-Figure 5As shown, a group of vertical support members 4 are provided. The vertical support members 4 are a plurality of square steel members 41 arranged in the middle of the tunnel vault along the tunnel excavation direction. The square steel members 41 are made of steel pipes or I-beams. The top of the square steel members 41 is connected to the second embedded member 8 embedded in the second lining 1 through a square metal plate 7. The second embedded member 8 is a mechanical anchor with a washer, which is anchored on the square metal plate 7. An angle steel 13 is used to connect the square metal plate 7 and the square steel member 41. A gap is left between the square metal plate 7 and the second lining 1, a metal plate 14 is arranged in the gap, and then cement mortar is used to fill it tightly, the bottom of the square steel piece 41 is embedded in the cross beam 31 or the top plate 32, and the fireproof board 11 is covered on the periphery of the square steel piece 41; specifically, a plurality of square steel pieces 41 are arranged between the two cross beams 31, and the arrangement spacing of the square steel pieces 41 is suitable to meet the lateral pressure caused by the slope rock bias load and rock creep, such as Figure 1 As shown, the bottoms of some square steel parts 41 are connected to the cross beam 31, and the bottoms of other square steel parts 41 are connected to the top plate 32. In both cases, metal embedded plates 12 are embedded in the bottoms of the square steel parts 41. The metal embedded plates 12 are fixedly connected to the square steel parts 41 through angle steels 13, and the metal embedded plates 12 are embedded under the transverse through-length ribs 312 to improve the stability after the overall connection.

[0026] In this embodiment, the square steel member 41 divides the tunnel arch top into two parts, and the clearance positions of the left and right arches can be used as the placement areas of ventilation equipment and power pipelines to meet the requirements of setting up ventilation and power systems in the tunnel arch. The arrangement spacing of the crossbeams 31 is based on the premise that the top plate, ventilation equipment and power pipelines can remain stable under the action of their own weight. The advantage of laying ventilation equipment and power pipelines in the tunnel arch is that it can improve the ventilation effect while saving the available space in the tunnel. Embodiment 2

[0027] Different from the first embodiment, for large-section tunnels, such as Figure 6-Figure 7 As shown, due to its large transverse span, multiple vertical support members 4 are required to be connected to the secondary lining 1 to improve the overall support performance.

[0028] In the present embodiment, two groups of vertical support members 4 are provided, and the vertical support members 4 include a plurality of square steel members 42 arranged on both sides of the tunnel vault along the tunnel excavation direction, and the top of the square steel member 42 is connected to the third embedded member 10 in the second lining 1 through a square metal plate 9, and the third embedded member 10 is also a mechanical anchor with a washer, and the third embedded member 10 is obliquely embedded in the second lining 1, and the square metal plate 9 is connected to the third embedded member 10 and is inclined, and the bottom of the square steel member 42 is embedded in the cross beam 31 or the top plate 32 (the same as in the first embodiment); since the top of the square steel member 42 is obliquely connected to the second lining 1 (different from the vertical connection in the first embodiment), for the large-section tunnel in the present embodiment, the top of the square steel member 42 needs to be processed into an inclined surface. Embodiment 3

[0029] Combination Figure 8 As shown in the figure, a lining construction method suitable for side-through slope tunnels is used in actual construction: 1) Calculate the arrangement spacing of the cross beam 31; Before construction, it is necessary to calculate the arrangement spacing of the cross beam 31 according to the design load of the tunnel (such as live load, dead load, wind load, etc.). Under normal circumstances, the arrangement spacing of the cross beam 31 should be set to 1.5m~2m to ensure that it can be evenly stressed under the deadweight of the top plate 32, the surrounding rock pressure and other effects; at the same time, according to the design requirements, prefabricated first embedded parts 21, second embedded parts 8, third embedded parts 10, angle steel 13 and metal embedded plates 12 and other embedded parts, the above embedded parts usually use Q235 steel, the diameter and specifications must meet the design requirements, the tensile strength should not be less than 250MPa, the number and position of the above embedded parts should be arranged according to the drawings to ensure that the load can be effectively transferred after the concrete is poured.

[0030] 2) Initial support and surface treatment of side arch walls; In the construction area, steel supports and wooden formwork are used to initially support the side arch walls of the tunnel to ensure that the side arch walls remain stable during the construction process. When the initial support surface is processed, the flatness of the initial support surface is controlled within ±5 mm, and the roughness of the initial support surface is increased to improve the bonding force and overall strength of the subsequent concrete. A waterproof layer with a thickness of 3 mm is laid on the initial support surface of the side arch wall to prevent the influence of moisture penetration on the concrete. Then, steel bars are tied on the waterproof layer. The diameter of the steel bars is usually 16 mm, and the spacing is set to 20 cm to ensure the tensile strength and stiffness of the side arch wall. 3) Arrange embedded parts at relevant positions; Connect the first embedded part 21 at the corresponding position of the tied steel bars, connect the second embedded part 8 / the third embedded part 10 at the arch of the tunnel, the embedded depth of the first embedded part 21 should reach 30cm, the embedded depth of the metal embedded plate 12 and the angle steel 13 should not be less than 40cm, and the embedded length of the bottom of the square steel piece 1 41 / square steel piece 2 42 connected to the metal embedded plate 12 and the angle steel 13 should not be less than 40cm, to ensure that it plays a stable supporting role; 4) Casting of the secondary lining of the tunnel (i.e. second lining 1); The concrete for pouring the second lining 1 is C30 concrete, and the pouring height is 20cm. During the pouring process, a vibrator is used to ensure that the concrete is evenly filled into every corner, and the bubbles in the concrete are discharged in time to enhance the density of the concrete and the overall strength after molding. The pouring speed is controlled to avoid concrete segregation and bleeding. After the pouring is completed, it is maintained for at least 7 days, the humidity is maintained above 90% and watered regularly, and the concrete surface is left to dry and crack. During the curing period, direct sunlight and strong wind should be avoided. After the concrete strength reaches the designed 28-day strength standard (≥30MPa), the formwork can be removed; 5) Casting the cross beam 31 and the top plate 32; After the formwork is removed, according to the arrangement spacing of the cross beam 31 calculated in the early stage, the cross beam reinforcement is tied between the first embedded parts 21 opposite to each other in the tunnel, and the metal embedded plate 12, angle steel 13 and square steel piece 1 41 / square steel piece 2 42 are connected to the cross beam reinforcement, the top plate reinforcement is tied between the adjacent cross beam reinforcements, the metal embedded plate 12, angle steel 13 and square steel piece 1 41 / square steel piece 2 42 are connected to the top plate reinforcement corresponding to the second embedded part 8 / third embedded part 10, and concrete is poured to form the cross beam 31. The strength grade of the concrete is C30, and the pouring height is 20 cm to ensure that it is firmly connected to the second lining 1. Then the top plate 32 is poured, and the pouring thickness is more than 20 cm. The flatness of the top plate 32 should be controlled within ±3 mm to meet the installation requirements of subsequent facilities. After the pouring is completed, the square steel piece 41 / square steel piece 2 42 is formed in the beam 31 or the top plate 32, and then the top of the square steel piece 41 is connected to the second lining 1 through the second embedded part 8, or the top of the square steel piece 2 42 is connected to the second lining 1 through the third embedded part 10 to complete the lining construction; the specifications of the square steel piece 1 41 / square steel piece 2 42 are usually set to 100mm×100mm, and the spacing is maintained at 1.5m to ensure the overall rigidity and stability. The space on both sides of the square steel piece 1 41 / square steel piece 2 42 is used to lay ventilation equipment and power pipelines to ensure ventilation effect and stable power supply. In addition, the connection and sealing of all pipelines must be strictly checked to ensure that there is no risk of air leakage and leakage.

[0031] In the lining structure design of the present invention, the square steel member 41 / square steel member 42, the first embedded member 21, the cross beam 31 and the top plate 32 form an integral force system with the second lining 1, so that the force on the lining is evenly dispersed on the entire structure, reducing local stress concentration. The frame structure formed by the square steel member 41 / square steel member 42 and the cross beam 31 enables the force to be transmitted along the entire lining. The first embedded member 21, as a supporting member, can effectively transfer the load of the lining to the arches on both sides, so that the load is distributed to a larger area, effectively reducing the load on a local area of ​​the lining, and maintaining the stability and safety of the overall structure when facing complex loads and environmental changes.

[0032] It should be clear that the above detailed description of the embodiments of the present invention provided in the accompanying drawings is only used to further illustrate the present invention and is not intended to limit the scope of the invention claimed for protection, but only represents selected embodiments of the present invention. Based on the embodiments of the present invention, some non-essential improvements and adjustments made by ordinary technicians in this field according to the above content of the present invention belong to the protection scope of the present invention.

Claims

1. A lining construction system suitable for a side-through slope tunnel, comprising a secondary lining (1) in the tunnel, characterized in that: Also includes: Two brackets (2) are provided, each bracket (2) is arranged along the tunneling direction and connected to the secondary lining (1); A transverse support member (3) is arranged along the width direction of the tunnel, and the transverse support member (3) is erected between two brackets (2); At least one group of vertical support members (4) is provided and connected between the second lining (1) and the horizontal support member (3).

2. A lining construction system suitable for a side-through slope tunnel according to claim 1, characterized in that: The corbel (2) comprises a first embedded part (21), a first longitudinal steel bar (22), a first vertical stirrup (23) and backfill concrete (24); the first embedded part (21) is connected to the second lining (1); the first longitudinal steel bar (22) and the first vertical stirrup (23) are arranged on the first embedded part (21); and the backfill concrete (24) is filled on the first longitudinal steel bar (22) and the first vertical stirrup (23).

3. A lining construction system suitable for side-through slope tunnel according to claim 2, characterized in that: The transverse supporting member (3) comprises a cross beam (31) and a top plate (32). A plurality of cross beams (31) are arranged along the tunneling direction. Both ends of each cross beam (31) are respectively mounted on two brackets (2). The top plate (32) is arranged between two adjacent cross beams (31).

4. A lining construction system suitable for side-through slope tunnel according to claim 3, characterized in that: A metal sheet (5) is provided between the crossbeam (31) and the corbel (2), and a gap between the crossbeam (31) and the second lining (1) is filled with firefighting foam (6).

5. The lining construction system for side-through slope tunnel according to claim 4 is characterized in that: A group of vertical support members (4) is provided, which includes a plurality of square steel members (41) arranged in the middle of the tunnel vault along the tunnel excavation direction.

6. A lining construction system suitable for side-through slope tunnel according to claim 5, characterized in that: The top of the square steel piece 1 (41) is connected to the second embedded piece (8) in the second lining (1) via a square metal plate 1 (7), and the bottom is embedded in the crossbeam (31) or the top plate (32).

7. The lining construction system for a side-through slope tunnel according to claim 4, characterized in that: Two groups of vertical support members (4) are provided, which include a plurality of square steel members (42) arranged on both sides of the tunnel vault along the tunnel excavation direction.

8. The lining construction system for a side-through slope tunnel according to claim 7, characterized in that: The top of the second square steel member (42) is connected to the third embedded member (10) in the second lining (1) through the second square metal plate (9), and the bottom is embedded in the crossbeam (31) or the top plate (32).

9. A lining construction method suitable for a side-through slope tunnel, characterized in that: A lining construction system for a side-through slope tunnel according to any one of claims 1 to 8 is used to implement the system, comprising the following steps: Step 1: Calculate the arrangement spacing of the cross beam (31) according to the design load of the tunnel, and prefabricate the first embedded part (21), the second embedded part (8), the third embedded part (10), the angle steel (13) and the metal embedded plate (12); Step 2: Carry out initial support and surface treatment on the side arch wall of the tunnel, lay a waterproof layer on the treated side arch wall, and then tie steel bars on the waterproof layer; Step 3: Connecting the first embedded part (21), the second embedded part (8) / the third embedded part (10) to the steel bars respectively; Step 4: pouring the secondary lining (1) of the tunnel, and removing the formwork after the secondary lining (1) is cured; Step 5: Tie the cross beam reinforcement and the top plate reinforcement separately, and arrange the square steel piece 1 (41) / square steel piece 2 (42) on the cross beam reinforcement and the top plate reinforcement, pour concrete to form the cross beam (31) and the top plate (32), and complete the lining construction.

10. A lining construction method suitable for a side-through slope tunnel according to claim 9, characterized in that: In step 5, the process of forming the cross beam (31) and the top plate (32) is as follows: Tie crossbeam reinforcement between first embedded parts (21) facing each other in the tunnel, and connect metal embedded plates (12), angle steels (13) and square steel piece 1 (41) / square steel piece 2 (42) to the crossbeam reinforcement; Tie the top plate reinforcement between adjacent crossbeam reinforcements, and connect the metal embedded plate (12), angle steel (13) and square steel piece 1 (41) / square steel piece 2 (42) to the top plate reinforcement corresponding to the second embedded part (8) / third embedded part (10); Connecting the top of the first square steel piece (41) to the second lining (1) via the second embedded piece (8), or connecting the top of the second square steel piece (42) to the second lining (1) via the third embedded piece (10); Concrete is poured to form a cross beam (31) and a top plate (32), and a square steel piece 1 (41) / square steel piece 2 (42) is formed in the cross beam (31) or the top plate (32).

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