Process for installing and pouring arch wall lining pre-embedding device with mold

Abstract

The invention provides a process for installing and pouring an arch wall lining pre-embedding device with a mold. The process comprises the following steps: S1, spraying concrete on an excavation surface to form a concrete spraying layer; s2, a waterproof layer is installed, gaskets are evenly distributed and fixed to the inner side of the concrete spraying layer through fasteners, and bonding pieces are arranged on the gaskets to bond and fix the waterproof layer; s3, lining pouring is prepared to fix an auxiliary supporting piece and a pre-embedded device on one side of the waterproof layer, and the pre-embedded device is fixedly connected with the auxiliary supporting piece; s4, formwork fixing is conducted, an overall formwork trolley is adopted to form a formwork for lining pouring, and the pre-embedded device is connected with an overall formwork of the overall formwork trolley; s5, pouring lining: pouring concrete between the waterproof layer and the integral template, and performing concrete curing; and S6, the whole formwork trolley is moved away, the embedded device and the whole formwork are connected and detached, and then the whole formwork trolley is moved away. The technical problems that in lining pouring of an existing tunnel and underground engineering, the pre-buried pouring quality is poor, and the efficiency is low are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of tunnel and underground engineering pouring, and particularly to the casting process of the embedded device for the arch wall lining with formwork installation. Background Art

[0002] The current pouring process in tunnel and underground engineering usually involves spraying concrete to form a shotcrete layer, then setting a waterproof layer, and finally formwork is set on the inner side of the waterproof layer, and then casting the lining.

[0003] However, many structural members need to be set in the lining layer in tunnel and underground engineering, such as grouting devices, groundwater discharge devices, and some sensors and lamps, etc. Many chambers of various shapes also need to be set for functional spaces such as emergency shelters, electrical and mechanical system layouts, drainage pump rooms, and fire fighting equipment placement.

[0004] The installation of the above-mentioned structural members usually adopts two methods:

[0005] 1. Before pouring the lining, the box formwork or the outer shell of the embedded part is fixed to the integral formwork by spot welding to fix the embedded part in the lining, and then pouring is carried out.

[0006] 2. After the rough pouring of the lining in the early stage is completed, installation is carried out through later finishing installation, such as drilling and concrete cutting.

[0007] In summary, there are some technical problems in the later installation method: the reserved and embedded parts of the lining are prone to problems such as rough surface, water stains, and deformation (such as position deformation and shape deformation), that is, the quality of the embedded pouring is poor, so secondary or tertiary repairs need to be carried out later, leaving a large number of appearance defects.

[0008] The reasons for the rough surface and water stains in the above problems are that there are pores between the embedded parts and the formwork, which is prone to leakage of mortar, and then leads to an imbalance in the proportion of concrete slurry. Severe mortar leakage causes abnormal distribution of the lateral pressure of the concrete on the formwork, which may squeeze the embedded parts and cause deviation. Summary of the Invention

[0009] Aiming at the deficiencies in the prior art, the present invention provides a casting process for the embedded device of the arch wall lining with formwork installation, which solves the technical problems of poor quality and low efficiency in the embedded casting in the existing tunnel and underground engineering lining pouring.

[0010] According to an installation and casting process of an arch wall lining recorded in an embodiment of the present invention, it includes:

[0011] S1. Spraying concrete: Spraying concrete on the excavation surface to form a shotcrete layer;

[0012] S2. Install the waterproof layer: Gaskets are evenly fixed on the inner side of the shotcrete layer by nail shooting, and a waterproof layer is adhesively fixed on the gaskets by an adhesive member;

[0013] S3. Preparation for lining pouring: An auxiliary support member and a pre-embedded device are fixed on one side of the waterproof layer, and the pre-embedded device is connected and fixed to the auxiliary support member;

[0014] S4. Template fixing: An integral formwork trolley is used to form the formwork for lining pouring, and the pre-embedded device is connected to the integral formwork of the integral formwork trolley;

[0015] S5. Pour the lining; Pour the concrete between the waterproof layer and the integral formwork, and perform concrete curing;

[0016] S6. Remove the integral formwork trolley: Disconnect the connection between the pre-embedded device and the integral formwork, and then remove the integral formwork trolley.

[0017] The technical principle of the present invention is as follows: The use of an integral formwork trolley for pouring can effectively improve the pouring efficiency. At the same time, the pre-embedded device is directly fixed on the integral formwork of the integral formwork trolley. Because the integral formwork of the integral formwork trolley has excellent strength, one end of the pre-embedded device can be firmly fixed, preventing it from shifting; and the surface of the integral formwork of the integral formwork trolley is flat, and it is not easy for the connection position between the pre-embedded device and it to leak slurry.

[0018] At the same time, the middle part of the pre-embedded device is also connected and cooperated with the auxiliary support member, and the bottom is connected to the integral formwork, which can effectively ensure that the pre-embedded device is not prone to elastic deformation when the concrete is injected, resulting in a cavity between the pre-embedded device and the concrete.

[0019] Compared with the prior art, the present invention has the following beneficial effects: Through the mechanical or physical fixation between the pre-embedded device, the auxiliary support member and the integral formwork, and in cooperation with the integral formwork trolley, high-efficiency and high-quality pre-embedded pouring of the lining is realized. It solves the technical problems of poor quality and low efficiency in the pre-embedded pouring of the lining in existing tunnels and underground engineering, can avoid secondary or tertiary repair and improvement, enhance the appearance quality of the lining, and achieve the purpose of beautiful finished products, economy and rationality.

[0020] Further, in the step S4, the coupling formwork is installed in the large window of the integral formwork, and then the pre-embedded device is connected to the coupling formwork. The installation stability and accuracy of the pre-embedded device, the auxiliary support member and the coupling formwork are checked through the empty space on one side of the coupling formwork where the large window is located. Finally, the seal formwork is installed at the empty space between the large window and the coupling formwork.

[0021] It is connected to the embedded device through the coupling template, and the connection of the embedded device can be observed through the gaps on both sides of the large window to ensure the firm connection of the embedded device during the pouring of the lining, thus ensuring the quality of the poured lining.

[0022] Furthermore, the integral formwork trolley includes evenly distributed integral formworks. There are large windows on the integral formworks. The coupling template and the bulkhead formwork are laid in the large windows. Small windows are opened on the coupling template for the installation of small-sized embedded devices. There is also a baffle for replacing the coupling template and the bulkhead formwork at the large window. When there is no need for an embedded device at this integral formwork, the baffle is directly fixed at the large window.

[0023] The large window is provided for directly cooperating with the installation of large-sized embedded devices. The large-sized embedded device is fixed by setting bolts at the edge of the large window, so that the fixing of the coupling template and the bulkhead formwork is omitted. Preferably, the embedded positions of the same type of embedded device in the tunnel lining are relatively fixed on the lining contour. Therefore, only large windows need to be opened on the corresponding integral formworks and cooperate with various coupling templates and bulkhead formworks to realize the embedded fixing of various different types of embedded devices, effectively improving the efficiency and shortening the embedded construction period. Moreover, the coupling template and the bulkhead formwork can cooperate with the integral formwork for repeated use, effectively reducing the formwork usage amount and thus reducing the cost.

[0024] Furthermore, support components are provided on the lower sides of the integral formwork at the coupling template and the bulkhead formwork. There are at least two groups of support components on the sides of the coupling template and the bulkhead formwork away from the embedded device;

[0025] The support component includes stiffening bolt noses arranged on the horizontal sides of the large window and a strengthening bolt rod installed between the two stiffening bolt noses corresponding to each other horizontally on both sides. There is also a rubber cushion block between the strengthening bolt rod and the coupling template and the bulkhead formwork.

[0026] By setting the strengthening bolt rod and the rubber cushion block, sufficient strength is provided for the integral formwork, the coupling template and the bulkhead formwork, avoiding the reduction of the formwork strength around and at the window due to the opening of the large window and the small window.

[0027] Furthermore, clamping grooves are provided at the upper and lower edges of the large window. The bulkhead formwork and the coupling template are provided with hooks corresponding to the clamping grooves. The hooks are snapped into the clamping grooves. A hot melt adhesive layer is provided in the gap between the hooks and the clamping grooves. The gaps between the bulkhead formwork, the coupling template and the integral formwork are filled with bright joint strips.

[0028] By the way of snapping the hooks into the clamping grooves, the disassembly and assembly efficiency of the bulkhead formwork and the coupling template is improved, and in combination with the hot melt adhesive layer and the bright joint strip, it is ensured that there will be no leakage of mortar.

[0029] Furthermore, a pre-embedded device is fixedly connected at the large window. The pre-embedded device is a lidless box body. The edge of the large window is connected to the opening of the pre-embedded device, and the formwork for sealing the bin and the connecting formwork are not provided at the position of the large window corresponding to the pre-embedded device.

[0030] By directly using a large-volume pre-embedded device such as a lidless box body as a pre-embedded part, there is no need for secondary or tertiary improvement after pouring, nor for installing a large-volume pre-embedded device later.

[0031] Furthermore, a pre-embedded device is fixedly connected at the small window. The pre-embedded device is a lidless box body. The edge of the small window is connected to the opening of the pre-embedded device, and the periphery is strengthened by bolts.

[0032] Furthermore, the pre-embedded device is a radial grouting device. The pre-embedded device includes a grouting hole pipe, an internal valve, and a fixing part provided at one end of the grouting hole pipe. The fixing part is connected to the overall formwork. The middle of the grouting hole pipe is connected to an auxiliary support. The grouting hole pipe penetrates the waterproof layer and is connected to the shotcrete layer on the excavation surface. Grouting ports are provided at both positions of the grouting hole pipe corresponding to both sides of the waterproof layer. An internal valve is provided in the grouting hole pipe corresponding to the grouting port. A hollow rotating rod is provided in the center of the grouting hole pipe, and one end of the hollow rotating rod communicates with the grouting port close to the shotcrete layer.

[0033] By sequentially connecting the grouting hole pipe to the excavation surface, the waterproof layer, the auxiliary support, and the overall formwork, a stable fixing structure is formed to ensure that it will not move during concrete pouring.

[0034] Furthermore, a nut structure is provided at the bottom of the fixing part. The nut structure is connected to a connecting formwork. The connecting formwork is connected to the overall formwork. The fixing part is provided with a cover plate, and the cover plate is connected through the nut structure after the overall formwork trolley is removed.

[0035] The nut structure is used to connect to the overall formwork during pouring and to connect to the cover plate after pouring. The cover plate plays a role in protecting the radial grouting device.

[0036] Furthermore, the pre-embedded device is a groundwater limited discharge device. The pre-embedded device includes a grate cage structure and a water discharge pipe connecting the grate cage structure. The grate cage structure is installed in the shotcrete layer. The water discharge pipe penetrates the shotcrete layer and is connected to the waterproof layer with a connecting formwork. The connecting formwork is connected to the overall formwork. The middle of the water discharge pipe is also connected to an auxiliary support.

[0037] By fixing the water discharge pipe to the shotcrete layer, the waterproof layer, the auxiliary support, and the overall formwork in sequence, a stable fixing structure is formed to ensure that it will not move during concrete pouring.

[0038] In summary, the beneficial effects of the present application are as follows:

[0039] 1. By using a variety of movable forms (connecting form and closing form) on the overall formwork trolley and repeating the process of installing a considerable number of embedded devices of different types, the production efficiency is greatly improved.

[0040] 2. During installation, the use of intermediate auxiliary materials can be greatly reduced, achieving energy consumption reduction and carbon emission reduction.

[0041] 3. The finished product effect and quality of the embedded devices are guaranteed, and secondary repair and improvement can be avoided.

[0042] 4. The large window of the overall form of the overall formwork trolley can be restored without affecting secondary sales, thus greatly reducing the cost loss of large equipment.

[0043] 5. This application can be used for large and small devices or enclosures that need to be installed in the arch wall lining or roof (shed) of all tunnels and underground projects. Taking tunnels as an example, the details are as follows:

[0044] 5.1. For different types of devices, large or small in size, large in quantity, or large enclosures, a large amount of repetitive work is obvious; this application can effectively reduce this repetitive work.

[0045] 5.2. The embedded positions of the same type of embedded devices are relatively fixed on the lining contour. Small objects can be installed using limited connecting forms and closing forms, and large objects can be directly installed using the overall form around the large window of the overall formwork trolley. The installation of devices or enclosures of different sizes saves labor and materials, improves efficiency, and shortens the embedded construction period.

[0046] 5.3. By repeatedly using the auxiliary connecting forms and closing forms, the embedded quality is improved, meeting the requirements of green and low-carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic structural diagram of the overall arch wall form of the embodiment of the present invention.

[0048] Figure 2 It is an exploded view of the installation structure of the connecting form of the embodiment of the present invention.

[0049] Figure 3 It is a schematic structural diagram of the installation of the connecting form and the closing form of the embodiment of the present invention.

[0050] Figure 4 It is a process flow chart of the installation and pouring of the arch wall lining of the embodiment of the present invention.

[0051] Figure 5 It is a schematic structural diagram of the installation of the large lidless box of Embodiment 1 of the present invention.

[0052] Figure 6Schematic installation structure diagram of the small lidless box body in Embodiment 2 of the present invention.

[0053] Figure 7 Schematic installation structure diagram of the radial grouting device in Embodiment 3 of the present invention.

[0054] Figure 8 Exploded view of the installation structure of the radial grouting device in Embodiment 3 of the present invention.

[0055] Figure 9 Schematic installation structure diagram of the groundwater limited discharge device in Embodiment 4 of the present invention.

[0056] In the above-mentioned drawings: 1. Integral formwork; 11. Large window; 12. Connecting formwork; 121. Small window; 13. Sealing formwork; 131. Hook; 14. Baffle; 15. Support assembly; 151. Stiffening bolt nose; 152. Reinforcing bolt bar; 153. Rubber cushion block; 16. Card slot; 161. Hot melt adhesive layer; 17. Exposed joint strip; 2. Embedded device; 201. Opening; 202. Bolt; 21. Grouting hole pipe; 211. Grouting port; 22. Built-in valve; 221. Hollow rotating rod; 23. Fixing piece; 231. Nut structure; 232. Cover plate; 24. Grating cage structure; 25. Water discharge pipe; 3. Excavation surface; 4. Shotcrete layer; 5. Waterproof layer; 6. Lining; 61. Auxiliary support piece; 62. Externally attached support piece. Detailed implementation manners

[0057] The technical solutions in the present invention will be further described below with reference to the drawings and embodiments.

[0058] As Figure 1-2 shown in the integral formwork trolley, it includes evenly distributed integral formworks 1. There are large windows 11 on the integral formworks 1 for installing large embedded devices 2. Specifically, the large windows 11 can be set at specific positions. Currently, the common positions are at both sides near the bottom and the top. Connecting formworks 12 and sealing formworks 13 are laid in the large windows 11 to cover the large windows 11. There are small windows 121 on the connecting formworks 12 for installing small embedded devices 2. When there is no need to set an embedded device 2 at the large window 11, a baffle 14 is fixed to the large window 11 to cover the large window 11.

[0059] As Figure 2-3As shown, a support assembly 15 is provided below the overall formwork 1 at the side connecting the connecting formwork 12 and the bulkhead formwork 13. At least two sets of support assemblies 15 are provided on the side of the connecting formwork 12 and the bulkhead formwork 13 away from the embedded device 2. Specifically, the support assembly 15 includes stiffening bolt noses 151 welded and fixed on the horizontal sides of the large window 11 and a reinforcing bolt rod 152 installed between two horizontally corresponding stiffening bolt noses 151 on both sides. A rubber cushion block 153 is also inserted between the reinforcing bolt rod 152 and the connecting formwork 12 and the bulkhead formwork 13, which is used to distribute the pressure borne by the connecting formwork 12 and the bulkhead formwork 13 onto the reinforcing bolt rod 152. Since the rubber cushion block 153 is used, it has a certain elasticity and can offset part of the impact force of the concrete.

[0060] As Figure 2-3 shown, clamping grooves 16 are provided at the upper and lower edges of the large window 11. The bulkhead formwork 13 and the connecting formwork 12 are provided with hooks 131 corresponding to the clamping grooves 16. The hooks 131 are snapped into the clamping grooves 16. The specific snapping method is to push the hooks 131 of the bulkhead formwork 13 and the connecting formwork 12 into the clamping grooves 16 from one side of the large window 11 and then slide along the clamping grooves 16 to a specific position. It should be noted that after the installation of the bulkhead formwork 13 and the connecting formwork 12, the upper surfaces are flush with the overall formwork.

[0061] Specifically, a hot-melt adhesive layer 161 is provided in the gap between the hook 131 and the clamping groove 16, and a visible joint strip 17 is filled in the gap between the bulkhead formwork 13, the connecting formwork 12 and the overall formwork 1. The above-mentioned hot-melt adhesive layer 161 and the visible joint strip 17 are both to prevent the concrete slurry from flowing in, forming an uneven surface of the lining 6, and to avoid the occurrence of slurry leakage, while ensuring the stable fixation of the bulkhead formwork 13 and the connecting formwork 12.

[0062] As Figure 4 shown, the installation and pouring process of the arch wall lining 6 includes:

[0063] S1. Shotcreting: Shotcrete is sprayed on the excavation surface 3 to form a shotcrete layer 4. This space refers to the chamber of the tunnel and underground project.

[0064] S2. Installing the waterproof layer 5: Washers are evenly fixed inside the shotcrete layer 4 by nail guns. The washers need to be fixed in the shotcrete layer 4 by nail guns. An adhesive member is provided on the washers to adhesively fix the waterproof layer 5, thereby achieving the function of fixing the waterproof layer 5.

[0065] S3. Preparation for lining 6 pouring: An auxiliary support member 61 and an embedded device 2 are fixed on one side of the waterproof layer 5. The specific method is to first fix the auxiliary support member 61, and then fix the embedded device 2 on the auxiliary support member 61 at the position where the embedded device 2 needs to be set.

[0066] S4. Formwork fixation: Use the one vehicle of the overall formwork 1 of the present application to form the formwork for lining 6 pouring, and connect the embedded device 2 to the overall formwork 1 of the overall formwork 1 vehicle.

[0067] S5. Pour the lining 6; Pour the concrete between the waterproof layer 5 and the overall formwork 1, and carry out concrete curing.

[0068] S6. Remove the overall formwork 1 vehicle: When the concrete strength meets 80%, disassemble the connection between the embedded device 2 and the overall formwork 1, and then remove the overall formwork 1 vehicle. At this time, the embedded device 2 is accurately and stably fixed in the lining 6, without the need for secondary or tertiary repair, nor the need to remove the embedded parts, and is fixed into the embedded device 2.

[0069] The auxiliary support member 61 mentioned above refers to a support structure added to the concrete, such as steel bars, steel frames, etc.

[0070] It should be noted that the embedded device 2 referred to in the present application is not exactly the same as the embedded part mentioned in the background technology. In the background technology, large-volume embedded parts are not the embedded device 2, and the embedded device 2 is installed after the pouring is completed.

[0071] Embodiment 1

[0072] As Figure 5 shown, an embedded device 2 is connected and fixed at the large window 11. The embedded device 2 is an uncovered box body. The edge of the large window 11 is connected to the opening 201 of the embedded device 2. Specifically, the uncovered box body embedded part is directly fixed to the large window 11 by bolts 202. There is no need to install the closing formwork 13 and the connecting formwork 12 at the position of the large window 11 corresponding to the embedded device 2. Of course, in order to ensure that there is no leakage of grout, a hot melt adhesive layer 161 needs to be provided between the large window 11 and the embedded device 2.

[0073] When performing the S4 step of the installation and pouring process of the arch wall lining 6, the embedded device 2 is directly bolted to the large window 11, and the connection firmness between the embedded device 2 and the overall formwork 1 is ensured through the large window 11.

[0074] And after completing the S6 step, the structure inside the embedded device 2 can be directly installed, such as installing a door structure at the opening 201 of the embedded device 2.

[0075] Preferably, an external support member 62 is provided inside the embedded device 2 to increase the strength of the embedded device 2. Specifically, the external support member 62 supports five inner surfaces on the inner side of the embedded device 2 respectively, and the external support member 62 passes through the opening 201 of the embedded device 2 and is connected to the strengthening bolt rod 152.

[0076] Embodiment 2

[0077] AsFigure 6 As shown, an embedded device 2 is fixedly connected at the small window 121. The embedded device 2 is a box body without a cover. The edge of the small window 121 is connected to the opening 201 of the embedded device 2 by bolts 202. Of course, in order to ensure that there is no grout leakage, a hot melt adhesive layer 161 needs to be provided between the small window 121 and the embedded device 2.

[0078] When performing the S4 step of the installation and pouring process of the arch wall lining 6, first install the connecting formwork 12 into the large window 11 of the integral formwork 1, then connect the embedded device 2 to the connecting formwork 12 by bolts, and fix the hot melt adhesive layer 161 between the small window 121 and the embedded device 2. Then, check the installation stability and accuracy of the embedded device 2, the auxiliary support 61 and the connecting formwork 12 through the gap on one side of the connecting formwork 12 where the large window 11 is located. Finally, install the closing formwork 13 at the gap between the large window 11 and the connecting formwork 12. Of course, after the installation is completed, a hot melt adhesive layer 161 needs to be fixed in the gaps between the large window 11, the connecting formwork 12 and the closing formwork 13, and a clear joint strip 17 is provided between the connecting formwork 12 and the closing formwork 13 for filling to ensure that there is no grout leakage and the fixing stability of the connecting formwork 12 and the closing formwork 13.

[0079] Example 3

[0080] As Figure 7-8 shown, the embedded device 2 is a radial grouting device. The embedded device 2 includes a grouting hole pipe 21, an internal valve 22 and a fixing member 23 provided at one end of the grouting hole pipe 21. The fixing member 23 is connected to the integral formwork 1. The middle of the grouting hole pipe 21 is connected and fixed to the auxiliary support 61. The grouting hole pipe 21 penetrates through the waterproof layer 5 and is connected and fixed to the shotcrete layer 4 on the excavation surface 3. Grouting ports 211 are provided at positions corresponding to both sides of the waterproof layer 5 on the grouting hole pipe 21. An internal valve 22 is provided in the grouting hole pipe 21 corresponding to the grouting ports 211. A hollow rotating rod 221 is provided in the center of the grouting hole pipe 21. One end of the hollow rotating rod 221 communicates with the grouting port 211 close to the shotcrete layer 4. The rotation of the hollow rotating rod 221 can drive the opening and closing of the internal valve 22.

[0081] Specifically, when there are phenomena such as leakage and voids on both sides of the waterproof layer 5, concrete can be re-injected into both sides of the waterproof layer 5 through the radial grouting device. The structure of the radial grouting device can refer to the patent content with the publication number CN113982649A.

[0082] Specifically, a nut structure 231 is provided at the bottom of the fixing member 23. The nut structure 231 is connected to the connecting formwork 12 of the integral formwork 1. The fixing member 23 is provided with a cover plate 232. After the integral formwork trolley is removed, the cover plate 232 is connected through the nut structure 231 to protect the radial grouting device.

[0083] After the S1 step of the installation and pouring process of the arch wall lining 6, it is necessary to drill holes to fix the grouting hole pipe 21 on the excavation surface 3. Then, in the S2 step, it is necessary to open holes in the waterproof layer 5 for the grouting hole pipe 21 to pass through, and sealing structures need to be provided on both sides of the waterproof layer 5.

[0084] When performing the S4 step, install the connecting formwork 12 into the large window 11 of the integral formwork 1, then bolt-connect the fixing member 23 to the connecting formwork 12, and fix the hot melt adhesive layer 161 between the small window 121 and the embedded device 2. Then, check the installation stability and accuracy of the embedded device 2, the auxiliary support member 61, and the connecting formwork 12 through the gap on one side of the connecting formwork 12 located in the large window 11. Finally, install the bulkhead formwork 13 at the gap between the large window 11 and the connecting formwork 12. Of course, after the installation is completed, it is necessary to fix the hot melt adhesive layer 161 in the gaps between the large window 11, the connecting formwork 12, and the bulkhead formwork 13, and set a joint strip 17 between the connecting formwork 12 and the bulkhead formwork 13 for filling to ensure that there is no leakage of slurry and the fixing stability of the connecting formwork 12 and the bulkhead formwork 13.

[0085] After completing the S6 step, fix the cover plate 232 to the fixing member 23.

[0086] Embodiment 4

[0087] As Figure 9 shown, the embedded device 2 is a groundwater limited discharge device. The embedded device 2 includes a grate cage structure 24 and a water discharge pipe 25 connecting the grate cage structure 24. The grate cage structure 24 is installed in the shotcrete layer 4, and the water discharge pipe 25 penetrates the shotcrete layer 4 and is connected to the waterproof layer 5 and the integral formwork 1. The middle of the water discharge pipe 25 is also connected to the auxiliary support member 61.

[0088] Specifically, the groundwater limited discharge device is used to drain the groundwater accumulated on both sides of the tunnel into the tunnel. The structure of the groundwater limited discharge device can refer to the patent content with the publication number CN114607460A.

[0089] Before the S1 step of the installation and pouring process of the arch wall lining 6, it is necessary to fix the grate cage structure 24, and then perform the S1 step. At this time, the water discharge pipe 25 also needs to be fixed to the grate cage structure 24. When performing the S4 step, it is necessary to fix the middle of the water discharge pipe 25 to the auxiliary support member 61.

[0090] When performing step S4, install the connection template 12 into the large window 11 of the overall template 1. Then insert the end of the water discharge pipe 25 into the small window 121 of the connection template 12, and fix a hot melt adhesive layer 161 between the small window 121 and the embedded device 2 to strengthen the physical connection. After that, check the installation stability and accuracy of the embedded device 2, the auxiliary support 61, and the connection template 12 through the gap on one side of the connection template 12 located in the large window 11. Finally, install the closing formwork 13 at the gap between the large window 11 and the connection template 12. Of course, after the installation is completed, fix the hot melt adhesive layer 161 in the gaps between the large window 11, the connection template 12, and the closing formwork 13, and set a clear joint strip 17 between the connection template 12 and the closing formwork 13 for filling to ensure that there is no leakage of grout and the fixing stability of the connection template 12 and the closing formwork 13.

[0091] In the above four embodiments, if some bolt holes are in a non-use state, means such as rubber plugs and rubber bands can be used for sealing, as long as it is ensured that there is no leakage of grout.

[0092] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A casting process for in-situ installation of a pre-embedded device for arch wall lining, characterized in that: Including: S1. Shotcrete: Shotcrete is sprayed on the excavation surface to form a shotcrete layer; S2. Install waterproof layer: Gaskets are evenly fixed on the inner side of the shotcrete layer by nail shooting, and a waterproof layer is adhesively fixed on the gaskets by an adhesive member; S3. Preparation for lining pouring: An auxiliary support member and a pre-embedded device are fixed on one side of the waterproof layer, and the pre-embedded device is connected and fixed to the auxiliary support member; S4. Formwork fixing: An integral formwork trolley is used to form the formwork for lining pouring, and the pre-embedded device is connected to the integral formwork of the integral formwork trolley; S5. Pour the lining; Pour the concrete between the waterproof layer and the integral formwork, and perform concrete curing; S6. Remove the integral formwork trolley: Disconnect the connection between the pre-embedded device and the integral formwork, and then remove the integral formwork trolley.

2. The casting process with in-mold installation of the embedded device for arch wall lining according to claim 1, characterized in that: In the step S4, the connecting formwork is installed in the large window of the integral formwork, and then the pre-embedded device is connected to the connecting formwork. The installation stability and accuracy of the pre-embedded device, the auxiliary support member and the connecting formwork are checked through the gap on one side of the connecting formwork located at the large window. Finally, the closing formwork is installed at the gap between the large window and the connecting formwork.

3. The casting process with in-mold installation of the embedded device for arch wall lining according to claim 1 or 2, characterized in that: The integral formwork trolley includes evenly distributed integral formworks. A large window is provided on the integral formwork. A connecting formwork and a closing formwork are laid in the large window. Small windows are provided on the connecting formwork. A baffle for replacing the connecting formwork and the closing formwork is also provided at the large window.

4. The casting process with in-mold installation of the embedded device for arch wall lining according to claim 3, characterized in that: Support components are provided under the connecting formwork and the closing formwork of the integral formwork. At least two groups of support components are provided on the side of the connecting formwork and the closing formwork away from the pre-embedded device; The support component includes stiffening bolt noses arranged on the horizontal two sides of the large window and a reinforcing bolt rod arranged between the two horizontally corresponding stiffening bolt noses on both sides. Rubber pads are also provided between the reinforcing bolt rod and the connecting formwork and the closing formwork.

5. The casting process with in-mold installation of the embedded device for arch wall lining as described in claim 3, characterized in that: Card slots are provided at the upper and lower edges of the large window. Hooks are provided on the closing formwork and the connecting formwork corresponding to the card slots. The hooks are snapped into the card slots. A hot melt adhesive layer is provided in the gap between the hooks and the card slots. A clear joint strip is filled in the gap between the closing formwork, the connecting formwork and the integral formwork.

6. The casting process with in-mold installation of the embedded device for arch wall lining according to claim 3, characterized in that: A pre-embedded device is connected and fixed at the large window. The pre-embedded device is a lidless box body. The edge of the large window is connected to the opening of the pre-embedded device. The closing formwork and the connecting formwork are not provided at the position of the large window corresponding to the pre-embedded device.

7. The casting process with in-mold installation of the embedded device for arch wall lining according to claim 3, characterized in that: A pre-embedded device is connected and fixed at the small window. The pre-embedded device is a lidless box body. The edge of the small window is connected to the opening of the pre-embedded device.

8. The casting process with in-mold installation of the embedded device for arch wall lining according to claim 1 or 2, characterized in that: The pre-embedded device is a radial grouting device. The pre-embedded device includes a grouting hole pipe, an internal valve and a fixing member arranged at one end of the grouting hole pipe. The fixing member is connected to the integral formwork. The middle of the grouting hole pipe is connected to the auxiliary support member. The grouting hole pipe penetrates through the waterproof layer and the shotcrete layer and is connected to the excavation surface. Grouting ports are provided at the positions on both sides of the waterproof layer corresponding to the grouting hole pipe. An internal valve is provided in the grouting hole pipe corresponding to the grouting port. A hollow rotating rod is provided in the center of the grouting hole pipe. One end of the hollow rotating rod communicates with the grouting port close to the shotcrete layer.

9. The casting process with in-mold installation of the embedded device for arch wall lining according to claim 8, characterized in that: The bottom of the fixing member is provided with a nut structure, the nut structure is connected with a coupling template, the coupling template is connected with the integral template, the fixing member is provided with a cover plate, and the cover plate is connected through the nut structure after the integral template trolley is removed.

10. The installation and casting process of the embedded device for arch wall lining with formwork as described in claim 1 or 2, characterized in that: The embedded device is a groundwater limited discharge device, the embedded device includes a grate cage structure and a water discharge pipe connecting the grate cage structure, the grate cage structure is installed in the shotcrete layer, the water discharge pipe penetrates the shotcrete layer and the waterproof layer and then is connected to the coupling template, the coupling template is connected with the integral template, and the middle of the water discharge pipe is also connected with an auxiliary support member.

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