Modular cave depot secondary lining trolley and secondary lining construction method

Abstract

The invention relates to a modular cave depot secondary lining trolley and a secondary lining construction method. The modular cave depot secondary lining trolley comprises a first trolley section and a second trolley section. The first trolley section and the second trolley section are each independently provided with a portal frame structure, a walking system, a formwork system and a hydraulic supporting system. The first trolley section and the second trolley section are connected in the cave depot through a detachable connecting mechanism to form an integral large-section trolley which is stressed integrally. The construction method has the advantages of being simple in design, convenient to assemble, high in construction speed, capable of saving construction cost, reducing construction risks and the like, and construction of the variable cross-section cave depot second lining can be rapidly completed.

Description

Technical Field

[0001] This invention relates to a modular tunnel secondary lining trolley and a secondary lining construction method, belonging to the field of tunnel secondary lining construction. Background Technology

[0002] A tunnel lining is a warehouse built within a rocky mountain. It is a type of underground engineering construction. Its construction is similar to that of conventional highway tunnel projects, but it also features significant variations in the cross-sectional structure of the main tunnel and approach tunnels within the same tunnel, diverse cross-sectional forms, and frequent changes in construction procedures. Traditional tunnel lining trolleys require internal modification or overall internal assembly at locations with cross-sectional changes within the tunnel. This process is hampered by the narrow construction space and harsh working environment inside the tunnel, leading to difficulties in trolley assembly, long modification and assembly periods, high construction risks, and hindering the overall progress of the project. Summary of the Invention

[0003] The technical problem solved by this invention is to overcome the shortcomings of the prior art and propose a modular tunnel lining trolley and lining construction method, which has the advantages of simple design, convenient assembly, fast construction speed, saving construction costs and reducing construction risks, and can quickly complete the construction of variable cross-section tunnel lining.

[0004] The technical solution of the present invention is: a modular tunnel lining trolley, comprising: a first trolley segment and a second trolley segment; each of the first trolley segment and the second trolley segment is independently equipped with a gantry structure, a walking system, a template system and a hydraulic support system; the first trolley segment and the second trolley segment are connected in the tunnel through a detachable connecting mechanism to form an integral large-section trolley that bears the overall force.

[0005] The connecting mechanism includes: The gantry lateral connection system consists of pins, connecting beams, and locking devices. The first and second car segments are laterally connected and fixed through the pins, connecting beams, and locking devices to transfer the casting load. Template docking mechanism: Located at the docking point of two sections, it includes alignment guide pins and sealing and pressing devices to ensure that the joints are flat, tight and leak-proof after the templates are assembled.

[0006] The walking system includes an omnidirectional wheel assembly, a drive unit, a guide unit, and a fixing unit; it has two modes: independent control and joint control, and can drive a single segment to walk independently and achieve movement in both longitudinal and lateral directions, or drive two connected segments to walk synchronously.

[0007] The template system is an adjustable design, divided into top template and side template according to position; the lower end of the template is fixed to the gantry structure by support rods; the top template and side template are processed and designed according to the outer contour of the cave structure; the top template and side template can be quickly modified from small cross-sectional contour to large cross-sectional contour by adding or replacing standardized template widening modules and adjusting the position of hinge points.

[0008] A secondary lining construction method using the aforementioned modular tunnel secondary lining trolley includes: S1: Small-section lining construction: The first and second car segments are pre-connected longitudinally outside the tunnel to form an integral car, which then travels to the small section construction area to complete the pouring, curing and demolding of the secondary lining of that section. S2: Demolition and Remodeling Outside the Cave: The entire trolley was removed from the tunnel to a spacious area outside the tunnel; the connecting mechanism between the first and second trolley segments was disconnected, separating them into two independent segments; the template system of each segment was modified, and the outline of the two segments was adjusted to adapt to the large cross-section design size by adding template widening modules, and the modified pre-assembly inspection was completed outside the tunnel; S3: Segmented entry into the tunnel and lateral positioning: The modified first and second vehicle segments are moved sequentially into the tunnel's large-section construction area; using their respective walking systems, the two segments are moved to the design axis position of the large section. S4: Internal Reassembly and Connection: Using the gantry transverse connection system and template docking mechanism, the first car segment and the second car segment are reconnected and locked to form a complete large-section lining trolley. S5: Large-section lining construction: The reassembled monolithic trolley was used to carry out the secondary lining pouring construction of the large section.

[0009] The advantages of this invention compared to the prior art are: 1. High integration and economy: One set of equipment enables lining construction of two different cross sections, avoiding the investment of multiple sets of equipment and significantly reducing project costs.

[0010] 2. Highly efficient construction organization: The most time-consuming trolley modification process was arranged to be carried out outside the tunnel, and carried out in parallel with other processes inside the tunnel, which effectively shortened the critical path construction period and improved the overall construction efficiency.

[0011] 3. Safety and quality controllable: The open space outside the tunnel allows for convenient operation, avoiding the safety risks of working at heights and in confined spaces inside the tunnel. It also facilitates ensuring the accuracy of template modification and assembly quality, thereby ensuring the molding quality of the lining concrete. Attached Figure Description

[0012] Figure 1 Schematic diagram of the cross-section of the cave-cabin junction.

[0013] Figure 2 Schematic diagram of the longitudinal section of the cavern structure.

[0014] Figure 3 Schematic diagram of the cave structure.

[0015] Figure 4 Schematic diagram of the cross section of the tunnel module trolley.

[0016] Figure 5 Schematic diagram of the longitudinal section of the secondary lining trolley for the external assembly of the pilot tunnel.

[0017] Figure 6 Schematic diagram of the lining trolley for assembling the secondary lining module outside the tunnel.

[0018] Figure 7 Schematic diagram of the cross section of the secondary lining being poured using a modular secondary lining trolley inside the tunnel.

[0019] Figure 8 Schematic diagram of the longitudinal section of the secondary lining being poured by the modular secondary lining trolley inside the tunnel.

[0020] Figure 9 Schematic diagram of the secondary lining pouring plan of the module secondary lining trolley inside the tunnel.

[0021] Figure 10 Schematic diagram of the cross-section of the lining trolley tunnel outside module 2.

[0022] Figure 11 Schematic diagram of the longitudinal section of the lining trolley tunnel outside Module 2.

[0023] Figure 12 Schematic diagram of the external split plan of the lining trolley tunnel of Module 2.

[0024] Figure 13 Schematic diagram of the cross section of the lining trolley being pushed into the tunnel in module two.

[0025] Figure 14 Schematic diagram of the longitudinal section of the lining trolley of module two being pushed to the main tunnel.

[0026] Figure 15 Schematic diagram of the lining trolley being pushed to the main tunnel in module two.

[0027] Figure 16 Schematic diagram of the assembly equipment layout inside the tunnel of the Module 2 lining trolley.

[0028] Figure 17 Schematic diagram of the cross section of the module assembled inside the tunnel of the Module 2 lining trolley (right side).

[0029] Figure 18Schematic diagram of the cross section of the module assembled inside the tunnel of the Module 2 lining trolley (left side).

[0030] Figure 19 Schematic diagram of the longitudinal section of the module assembled inside the tunnel of the Module 2 lining trolley.

[0031] Figure 20 Schematic diagram of the assembly module inside the tunnel of the lining trolley for module two Figure 21 Schematic diagram of the cross section of the lining trolley in the tunnel of module two (right side).

[0032] Figure 22 Schematic diagram of the cross section of the lining trolley in the tunnel of module two (left side).

[0033] Figure 23 Schematic diagram of the transverse movement and positioning of the lining trolley inside the tunnel of Module 2.

[0034] Figure 24 Schematic diagram of the main tunnel module trolley.

[0035] Figure 25 Schematic diagram of the cross section of the main tunnel lining trolley.

[0036] Figure 26 A schematic diagram of the main tunnel lining secondary lining being poured using a trolley.

[0037] Figure 27 Schematic diagram of the longitudinal section of the main tunnel secondary lining cast by the integral main tunnel lining trolley. Detailed Implementation

[0038] This invention relates to a modular tunnel lining trolley, comprising: a first trolley segment and a second trolley segment; each of the first and second trolley segments is independently equipped with a gantry structure, a traveling system, a template system, and a hydraulic support system; the first and second trolley segments are connected within the tunnel through a detachable connecting mechanism to form an integral, large-section trolley that bears the load as a whole.

[0039] The connecting mechanism includes: The gantry lateral connection system consists of pins, connecting beams, and locking devices. The first and second car segments are laterally connected and fixed through the pins, connecting beams, and locking devices to transfer the casting load. Template docking mechanism: Located at the docking point of two sections, it includes alignment guide pins and sealing and pressing devices to ensure that the joints are flat, tight and leak-proof after the templates are assembled.

[0040] The walking system includes an omnidirectional wheel assembly, a drive unit, a guide unit, and a fixing unit; it has two modes: independent control and joint control, and can drive a single segment to walk independently and achieve movement in both longitudinal and lateral directions, or drive two connected segments to walk synchronously.

[0041] The template system is an adjustable design, divided into top template and side template according to position; the lower end of the template is fixed to the gantry structure by support rods; the top template and side template are processed and designed according to the outer contour of the cave structure; the top template and side template can be quickly modified from small cross-sectional contour to large cross-sectional contour by adding or replacing standardized template widening modules and adjusting the position of hinge points.

[0042] This invention also relates to a secondary lining construction method using the above-mentioned modular cavern secondary lining trolley, comprising: S1: Small-section lining construction: The first and second car segments are pre-connected longitudinally outside the tunnel to form an integral car, which then travels to the small section construction area to complete the pouring, curing and demolding of the secondary lining of that section. S2: Demolition and Remodeling Outside the Cave: The entire trolley was removed from the tunnel to a spacious area outside the tunnel; the connecting mechanism between the first and second trolley segments was disconnected, separating them into two independent segments; the template system of each segment was modified, and the outline of the two segments was adjusted to adapt to the large cross-section design size by adding template widening modules, and the modified pre-assembly inspection was completed outside the tunnel; S3: Segmented entry into the tunnel and lateral positioning: The modified first and second vehicle segments are moved sequentially into the tunnel's large-section construction area; using their respective walking systems, the two segments are moved to the design axis position of the large section. S4: Internal Reassembly and Connection: Using the gantry transverse connection system and template docking mechanism, the first car segment and the second car segment are reconnected and locked to form a complete large-section lining trolley. S5: Large-section lining construction: The reassembled monolithic trolley was used to carry out the secondary lining pouring construction of the large section.

[0043] The present invention will be further described below with reference to the accompanying drawings: This invention addresses the problem of efficient trolley construction for variable-diameter cross-section tunnel engineering, wherein the tunnel structure can be found in [reference needed]. Figures 1-3 (Taking the example project as an example, the width of the pilot tunnel is 7m and the height is 8m; the width of the main tunnel is 13m and the height is 11m).

[0044] Step 1: Refer to Figures 4-6 The modular secondary lining trolley 3 is assembled outside the tunnel. The secondary lining trolley of the tunnel consists of two sections. Each of the front and rear sections has an independent gantry structure, a walking mechanism motor + wheelset and hydraulic system. Each section can walk and move laterally independently.

[0045] Step 2: Refer to Figures 7-9 After the modular secondary lining trolley 3 is assembled, it is pushed into the pilot tunnel 1, and the secondary lining 101 of the pilot tunnel is poured.

[0046] Step 3: See Figures 10-12 After the secondary lining 101 of the pilot tunnel is poured, the modular secondary lining trolley 3 is removed from the tunnel and longitudinally disassembled into two sections. The templates and rods of the non-shared parts of the modular secondary lining trolley 3 are removed, forming modular secondary lining trolley 301 and modular secondary lining trolley 302 respectively.

[0047] Step 4: See Figures 13-15 The disassembled module lining trolleys 301 and 302 are pushed into the designated positions in the main tunnel 2 in sequence.

[0048] Step 5: See Figures 16-20 Inside the tunnel, using lifting equipment 4, the corresponding modules of the top formwork and its support system 3012, 3022, and the side formwork and its support system 3011, 3021 were hoisted and modified according to the lining form of the main tunnel, respectively, for the module lining trolley 301 and module lining trolley 302.

[0049] Step 6: See Figures 21-23 After the modular trolleys inside the tunnel are modified, the two modified modular trolleys are moved laterally to the left and right side walls using the omnidirectional wheels at the bottom of the modular trolleys.

[0050] Step 7: See Figures 24-27 The left and right trolleys are aligned longitudinally using the trolley self-propelled system, and the two trolleys are connected to form an integral main tunnel lining trolley 5. The main tunnel large section trolley assembly is completed, and it is used for the secondary lining pouring of the main tunnel 201.

[0051] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention based on the above-disclosed technical content without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A modular tunnel lining trolley, characterized in that, include: The first and second car segments are each independently equipped with a gantry structure, a traveling system, a formwork system, and a hydraulic support system. The first and second car segments are connected in the tunnel through a detachable connecting mechanism to form an integrated large-section trolley that bears the load as a whole.

2. The modular tunnel lining trolley according to claim 1, characterized in that, The connecting mechanism includes: a gantry lateral connection system and a template docking mechanism; wherein... The lateral connection system of the gantry consists of pins, connecting beams and locking devices. The first car segment and the second car segment are laterally connected and fixed through the pins, connecting beams and locking devices to transfer the casting load. The template joining mechanism, located at the joint of two sections, includes alignment guide pins and sealing and pressing devices to ensure that the joints are flat, tight, and leak-proof after the templates are assembled.

3. The modular tunnel lining trolley according to claim 1, characterized in that, The walking system includes an omnidirectional wheel assembly, a drive unit, a guide unit, and a fixing unit; it has two modes: independent control and joint control, and can drive a single segment to walk independently and achieve movement in both longitudinal and lateral directions, or drive two connected segments to walk synchronously.

4. The modular tunnel lining trolley according to claim 1, characterized in that, The template system is an adjustable design, divided into top template and side template according to position; the lower end of the template is fixed to the gantry structure by support rods; the top template and side template are processed and designed according to the outer contour of the cave structure; the top template and side template can be quickly modified from small cross-sectional contour to large cross-sectional contour by adding or replacing standardized template widening modules and adjusting the position of hinge points.

5. A method for secondary lining construction using the modular tunnel secondary lining trolley as described in claim 1, characterized in that, include: The first and second car segments are pre-connected longitudinally outside the tunnel to form an integral car, which then travels to the small section construction area to complete the pouring, curing and demolding of the secondary lining of that section. The entire trolley was removed from the tunnel to a spacious area outside the tunnel; the connecting mechanism between the first and second trolley segments was disconnected, separating them into two independent segments; the template system of each segment was modified, and the outline of the two segments was adjusted to adapt to the large cross-section design size by adding template widening modules, and the modified pre-assembly inspection was completed outside the tunnel; The modified first and second vehicle segments are moved sequentially into the tunnel's large-section construction area; using their respective walking systems, the two segments are moved to the design axis position of the large section. Using the gantry transverse connection system and template docking mechanism, the first car segment and the second car segment are reconnected and locked to form a complete large-section lining trolley. The reassembled monolithic trolley was used to carry out the secondary lining pouring construction of the large section.

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