Tunnel hidden hole foundation reinforcement construction and device after ring forming and steel pipe grouting pile forming

By using a concrete casting device with a filter mesh and hydraulic cylinder in tunnel construction, the problem of pipeline blockage caused by larger aggregates in concrete is solved, the stability and efficiency of concrete transport is improved, and the connection of pipelines is simplified and disassembly process.

CN119412071APending Publication Date: 2025-02-11GUANGXI CHANGCHANG ROAD & BRIDGE CONSTR
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Patent Information

Application Number
CN202411411383.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-10-10
Publication Date
2025-02-11

AI Technical Summary

Technical Problem

During the construction of existing tunnels, the larger aggregates in the concrete are easily blocked during the transportation process in the pipeline, affecting the normal transportation of concrete.

Method used

A concrete pouring device is designed, including a filter mesh, hydraulic cylinder and push plate. It is combined with the discharge port and insertion plate, which can filter out larger aggregates in the concrete and reduce the risk of blockage. At the same time, it connects the handle and slide through a two-way screw. Blocks and scrambles to simplify the connection and disassembly of pipes.

Benefits of technology

It effectively reduces the entry of larger aggregates in concrete, avoids pipeline blockage, improves the normality and efficiency of concrete conveying, and simplifies the installation and disassembly of pipelines.

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Abstract

The invention belongs to the technical field of tunnel construction, and particularly relates to a foundation reinforcement construction and device for a tunnel hidden hole after ring formation and steel pipe grouting pile formation, and a construction method comprises the following specific steps: S1, performing geological survey, procedure planning and preparation work of materials and equipment before construction; s2, an inverted arch is measured and excavated according to the design, a steel arch frame is installed for supporting, and then a rigid guide pipe is welded to the steel arch frame; s3, concrete pouring equipment is used for pouring concrete into the installed arch frame, and after the concrete is solidified and formed, pile foundation punching operation is conducted; the top of the bottom plate is fixedly connected with a conveying pump body; the top of the bottom plate is fixedly connected with a feeding hopper; the side wall of the feeding hopper is communicated with a discharging pipe; a filter screen is mounted on the inner side wall of the feeding hopper; and a filter screen, a first hydraulic cylinder and a push plate are arranged, and a discharging opening and an inserting plate are matched, so that concrete can be filtered, and the situation that large aggregate doped in the concrete enters a pipeline to cause blockage, and normal conveying of the concrete is affected is reduced.
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Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular is a tunnel blind hole firstly forms a ring and then steel pipe grouting piles to reinforce the foundation construction and device. Background Art

[0002] With the continuous improvement of my country's economic development level, the national high-speed railway is connected into a network. The high-speed railway network crossing the Loess Plateau in the central and western regions is under large-scale construction. The construction of highway tunnels passing through expansive red clay strata is an important part of the highway network.

[0003] In the existing tunnel construction process, the construction of the tunnel entrance foundation reinforcement is an important link, which is directly related to the safety and stability of the tunnel construction. Usually, concrete slurry is injected into the stratum through a grouting pipe to improve the strength and stability of the soil. When performing the grouting operation, concrete conveying equipment is usually used to assist the operation. During long-term use and observation, it is found that larger aggregates are usually mixed in the concrete. During the transportation of concrete in the pipeline, the larger aggregates will cause blockage in the pipeline, resulting in problems affecting the normal transportation of concrete.

[0004] To this end, the present invention provides a tunnel blind hole first forming a ring and then steel pipe grouting pile reinforcement foundation construction and device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art and solve at least one of the problems raised in the background technology, a tunnel blind hole is first ringed and then steel pipe grouting is used to form piles to reinforce the foundation construction and device is proposed.

[0006] The technical solution adopted by the present invention to solve the technical problem is: the specific steps of the construction method of the tunnel blind hole first forming a ring and then steel pipe grouting piles to reinforce the foundation described in the present invention are as follows:

[0007] S1: Conduct geological survey, process planning, and preparation of materials and equipment before construction;

[0008] S2: Measure and excavate the invert according to the design, and install steel arch support.

[0009] Afterwards, a rigid guide tube is welded on the steel arch;

[0010] S3: Use concrete pouring equipment to pour concrete on the installed arch frame. When the concrete solidifies and takes shape, perform pile foundation drilling operations;

[0011] S4: After the pile foundation hole is drilled, a steel pipe pile is driven into the hole. After the pile driving is completed, gravel is filled on the outside of the steel pipe pile and then ultra-fine cement slurry is injected for reinforcement, thereby completing the construction of the blind hole invert arch.

[0012] A concrete pouring device, which is suitable for any of the above-mentioned tunnel blind hole ring-forming and then steel pipe grouting pile reinforcement foundation construction methods, wherein the concrete pouring device described in S3 includes a bottom plate; a conveying pump body is fixedly connected to the top of the bottom plate; a feed hopper is fixedly connected to the top of the bottom plate; a discharge pipe is connected to the side wall of the feed hopper; a filter is installed on the inner wall of the feed hopper; a first hydraulic cylinder is fixedly connected to the side wall of the feed hopper; a push plate is fixedly connected to the end of the first hydraulic cylinder; the push plate is in contact with the filter; the feed hopper is away from A discharge port is provided on one side wall of the first hydraulic cylinder; a plug plate is slidably fitted in the discharge port; through the above structure, a filter screen, the first hydraulic cylinder and a push plate are arranged, and the discharge port and the plug plate are cooperated to filter the concrete, so as to reduce the situation where larger aggregates mixed in the concrete enter the pipeline and cause blockage, thereby affecting the normal transportation of the concrete. At the same time, the first hydraulic cylinder drives the push plate to push the filtered large aggregates out of the top of the filter screen from the discharge port, so as to reduce the situation where aggregates accumulate on the top of the filter screen and affect the filtering effect of the filter screen on the concrete.

[0013] Preferably, a slide rail is fixedly connected to the top of the discharge pipe; a bidirectional screw is rotatably connected to the inner wall of the slide rail; a plurality of turning handles are fixedly connected to the end of the bidirectional screw; a pair of sliding blocks are threadedly connected to the middle of the bidirectional screw; a clamping plate is fixedly connected to the side wall of the sliding block; the pair of clamping plates are both semicircular in structure and are arranged correspondingly; through the above structure, a bidirectional screw is provided to connect the turning handle with the sliding block and the clamping plate, which can facilitate the connection and disassembly of the pipeline, so as to reduce the traditional method of using a large number of bolts and flanges for fixing, resulting in a more complicated operation process and a longer installation and disassembly time.

[0014] Preferably, a fixing frame is fixedly connected to the side wall of the pallet on one side; a fixing plate is fixedly connected to the side wall of the pallet on the other side; the fixing frame and the fixing plate are engaged with each other; the fixing frame and the fixing plate are both arranged near the top of the pallet; a fixing pin is slidably fitted in the middle of the fixing frame and the fixing plate; through the above structure, the fixing frame, the fixing plate and the fixing pin are arranged, which can improve the stability of the connection between the pallets on both sides when the pallet is fixed to the pipeline, so as to reduce the vibration generated during the transportation process, which may cause the separation of the pallet caused by the rotation of the bidirectional screw.

[0015] Preferably, a plurality of second hydraulic cylinders are fixedly connected to the side wall of the base plate; the plurality of second hydraulic cylinders are symmetrically arranged in pairs; the output ends of the second hydraulic cylinders are arranged toward the bottom of the base plate; the ends of the second hydraulic cylinders are fixedly connected to a support plate; through the above structure, the second hydraulic cylinders and the support plates are arranged, and support and reinforcement can be performed from the outside of the base plate to improve the stability of the overall equipment during use and reduce the situation where the center of gravity is unstable and tipping occurs due to the heavy mass of concrete.

[0016] Preferably, a plurality of damping springs are fixedly connected to the bottom of the support plate; the plurality of damping springs are evenly distributed at the bottom of the support plate; a pad is commonly fixedly connected to the bottom of the plurality of damping springs; through the above structure, the damping springs and the pad can be provided for buffering and vibration reduction, which can reduce vibration during concrete transportation and cause the overall connection structure to loosen and fall off.

[0017] Preferably, a plurality of anchor rods are fixedly connected to the bottom of the pad; the plurality of anchor rods are distributed in a circular array; the bottom of the anchor rods is a conical structure; through the above structure, anchor rods are provided to connect the pad, which can improve the tightness of the connection between the pad and the ground, and at this time, the position movement of the overall equipment can be reduced to improve the stability during use.

[0018] Preferably, a sealing gasket is fixedly connected to the inner side wall of the card plate; the sealing gasket is made of flexible material; through the above structure, a sealing gasket is arranged to connect the card plate, which can seal the pipeline and the discharge pipe to reduce the leakage of concrete from the gap between the discharge pipe and the pipeline during transportation.

[0019] Preferably, a collecting box is fixedly connected to the side wall of the feed hopper; the collecting box is arranged with a top opening; the collecting box is close to the bottom of the discharge port; through the above structure, the collecting box can be arranged to collect the aggregate pushed out from the discharge port to reduce the situation where the aggregate is scattered on the ground and affects the construction.

[0020] The beneficial effects of the present invention are as follows:

[0021] 1. The invention discloses a tunnel blind hole construction and device for first forming a ring and then grouting steel pipes to form piles to reinforce the foundation. By setting a filter, a first hydraulic cylinder and a push plate, in cooperation with a discharge port and a plug plate, the concrete can be filtered to reduce the situation where larger aggregates mixed in the concrete enter the pipeline and cause blockage, thus affecting the normal transportation of the concrete. At the same time, the first hydraulic cylinder drives the push plate to push the filtered large aggregates out of the top of the filter from the discharge port to reduce the situation where aggregates accumulate on the top of the filter and affect the filtering effect of the filter on the concrete.

[0022] 2. The invention describes a tunnel blind hole construction and device that first forms a ring and then injects steel pipes to form piles to reinforce the foundation. By setting a bidirectional screw to connect the handle with the slider and the clamping plate, it is easy to connect and disassemble the pipeline, thereby reducing the traditional method of using a large number of bolts and flanges to fix, which results in a more complicated operation process and a longer installation and disassembly time. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] Figure 1 It is a flow chart of the construction method of the present invention in which the tunnel blind hole is first ringed and then steel pipe grouting is used to form piles to reinforce the foundation;

[0025] Figure 2 is a three-dimensional diagram of the concrete conveying equipment of the present invention;

[0026] Figure 3 It is a structural schematic diagram of the feed hopper in the present invention;

[0027] Figure 4 It is a structural schematic diagram of the card board in the present invention;

[0028] Figure 5 It is a structural schematic diagram of the second hydraulic cylinder in the present invention.

[0029] Legend:

[0030] 1. Bottom plate; 11. Conveying pump body; 12. Feed hopper; 13. Discharge pipe; 14. Filter; 15. First hydraulic cylinder; 16. Push plate; 17. Discharge port; 18. Insert plate; 2. Slide rail; 21. Bidirectional screw; 22. Turning handle; 23. Sliding block; 24. Clamping plate; 3. Fixing frame; 31. Fixing plate; 32. Fixing pin; 4. Second hydraulic cylinder; 41. Support plate; 5. Damping spring; 51. Pad; 6. Anchor rod; 7. Sealing pad; 8. Collection box. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Specific examples are given below.

[0033] like Figure 1 As shown, the specific steps of the construction method for first forming a ring and then grouting steel pipes to form piles to reinforce the foundation described in the embodiment of the present invention are as follows:

[0034] S1: Conduct geological survey, process planning, and preparation of materials and equipment before construction;

[0035] S2: Measure and excavate the invert according to the design, and install steel arch support.

[0036] Afterwards, a rigid guide tube is welded on the steel arch;

[0037] S3: Use concrete pouring equipment to pour concrete on the installed arch frame. When the concrete solidifies and takes shape, perform pile foundation drilling operations;

[0038] S4: After the pile foundation hole is drilled, a steel pipe pile is driven into the hole. After the pile driving is completed, gravel is filled on the outside of the steel pipe pile and then ultra-fine cement slurry is injected for reinforcement, thereby completing the construction of the blind hole invert arch.

[0039] like Figures 2 to 4 As shown, a concrete pouring device is suitable for any of the above-mentioned tunnel blind hole first forming a ring and then steel pipe grouting pile reinforcement foundation construction methods, wherein the concrete pouring device described in S3 includes a bottom plate 1; a conveying pump body 11 is fixedly connected to the top of the bottom plate 1; a feed hopper 12 is fixedly connected to the top of the bottom plate 1; a discharge pipe 13 is connected to the side wall of the feed hopper 12; a filter screen 14 is installed on the inner side wall of the feed hopper 12; a first hydraulic cylinder 15 is fixedly connected to the side wall of the feed hopper 12; The end of the first hydraulic cylinder 15 is fixedly connected with a push plate 16; the push plate 16 is in contact with the filter screen 14; the side wall of the feed hopper 12 away from the first hydraulic cylinder 15 is provided with a discharge port 17; a plug plate 18 is slidably fitted in the discharge port 17; when pouring concrete on the installed arch frame, the pipeline is connected to the discharge pipe 13, and then concrete is added to the feed hopper 12, and the bottom plate 1 is started to send the concrete into the pipeline to the pouring area. When the concrete enters the feed hopper 12, , will pass through the filter screen 14. At this time, the filter screen 14 will filter the concrete and filter out the larger aggregates in the concrete. When the top surface of the concrete is lower than the filter screen 14, the plug plate 18 is pulled out and the first hydraulic cylinder 15 is started to stretch. At this time, the push plate 16 can be driven to move toward the discharge port 17. At this time, the push plate 16 pushes out the larger aggregates filtered out from the top of the filter screen 14 from the discharge port 17, and then the first hydraulic cylinder 15 is contracted to drive the push plate 16 to reset, and then the plug plate 18 is inserted into the discharge port 17. Through the above structure, the filter screen 14, the first hydraulic cylinder 15 and the push plate 16 are set. In conjunction with the discharge port 17 and the plug plate 18, the concrete can be filtered to reduce the larger aggregates mixed in the concrete, which enter the pipeline and cause blockage, thereby affecting the normal transportation of the concrete. At the same time, the first hydraulic cylinder 15 drives the push plate 16 to push the filtered large aggregates out of the top of the filter screen 14 from the discharge port 17 to reduce the accumulation of aggregates on the top of the filter screen 14, which affects the filtering effect of the filter screen 14 on the concrete.

[0040] like Figure 3 to Figure 4As shown, the top of the discharge pipe 13 is fixedly connected with a slide rail 2; the inner side wall of the slide rail 2 is rotatably connected with a bidirectional screw 21; the end of the bidirectional screw 21 is fixedly connected with a plurality of turning handles 22; the middle part of the bidirectional screw 21 is threadedly connected with a pair of sliders 23; the side walls of the sliders 23 are fixedly connected with a clamping plate 24; the pair of clamping plates 24 are both semicircular in structure and are correspondingly arranged; during operation, when connecting the concrete conveying pipe to the discharge pipe 13, align the end of the pipe with the end of the discharge pipe 13, and then rotate the turning handle 22 to drive the bidirectional screw 21 to rotate, at which time the sliders 23 can slide in opposite directions in the slide rail 2, and at this time the sliders 23 can drive The clamping plates 24 move towards each other. When the bidirectional screw 21 rotates clockwise, the clamping plates 24 can be driven to approach each other. At this time, the clamping plates 24 will cover the pipe and the discharge pipe 13, and the pipe and the discharge pipe 13 can be fixed together. When the pipe needs to be removed, the handle 22 can be rotated counterclockwise. At this time, the clamping plates 24 are driven away from each other, and the fixation of the pipe can be released. Through the above structure, a bidirectional screw 21 is set to connect the handle 22 with the slider 23 and the clamping plate 24, which can facilitate the connection and disassembly of the pipe, so as to reduce the traditional method of using a large number of bolts and flange fixation, resulting in a more cumbersome operation process and a longer installation and disassembly time.

[0041] like Figure 4 As shown, a fixing frame 3 is fixedly connected to the side wall of the clamping plate 24 on one side; a fixing plate 31 is fixedly connected to the side wall of the clamping plate 24 on the other side; the fixing frame 3 and the fixing plate 31 are engaged with each other; the fixing frame 3 and the fixing plate 31 are both arranged near the top of the clamping plate 24; a fixing pin 32 is slidably matched in the middle of the fixing frame 3 and the fixing plate 31; during operation, when the clamping plates 24 are brought close to each other to fix the pipeline, the clamping plates 24 will drive the fixing plates 31 and the fixing frames 3 on both sides to approach each other, and when the clamping plates 24 on both sides are in contact, the fixing plates 31 will be inserted into The fixing frame 3 is fixed, and then the fixing pin 32 is inserted into the fixing frame 3 and the fixing plate 31. At this time, the fixing frame 3 and the fixing plate 31 can be connected and fixed. When disassembling, the fixing pin 32 is first removed, and the card plate 24 drives the fixing frame 3 and the fixing plate 31 to move away from each other. Through the above structure, the fixing frame 3 and the fixing plate 31 and the fixing pin 32 are set. When the card plate 24 fixes the pipeline, the stability of the connection between the card plates 24 on both sides is improved to reduce the vibration generated during the transportation process, which causes the rotation of the bidirectional screw 21 to cause the card plate 24 to separate.

[0042] like Figure 2 and Figure 5As shown, a plurality of second hydraulic cylinders 4 are fixedly connected to the side wall of the base plate 1; the plurality of second hydraulic cylinders 4 are symmetrically arranged in pairs; the output end of the second hydraulic cylinder 4 is arranged toward the bottom of the base plate 1; a support plate 41 is fixedly connected to the end of the second hydraulic cylinder 4; when working, before concrete is transported, the base plate 1 is pushed and placed in position, and the second hydraulic cylinder 4 is started to stretch and drive the support plate 41 to move toward the ground. At this time, after the support plate 41 contacts the ground, it can be supported and reinforced from the outside of the base plate 1. After use, the second hydraulic cylinder 4 is started again to shrink and drive the support plate 41 away from the ground. Through the above structure, the second hydraulic cylinder 4 and the support plate 41 are arranged, and the support and reinforcement can be carried out from the outside of the base plate 1 to improve the stability of the overall equipment during use and reduce the situation where the center of gravity is unstable due to the heavy weight of concrete and tipping occurs.

[0043] like Figure 5 As shown, a plurality of damping springs 5 ​​are fixedly connected to the bottom of the support plate 41; the plurality of damping springs 5 ​​are evenly distributed at the bottom of the support plate 41; a pad 51 is fixedly connected to the bottom of the plurality of damping springs 5; during operation, when the second hydraulic cylinder 4 drives the fixed plate 31 to move toward the ground, it will drive the damping spring 5 and the pad 51 to move toward the ground. At this time, the pad 51 will contact the ground, and more vibration will be generated during the transportation of concrete. At this time, when the vibration is transmitted to the damping spring 5, the damping spring 5 will continuously contract and rebound for buffering and vibration reduction. Through the above structure, the damping spring 5 and the pad 51 can be arranged for buffering and vibration reduction, which can reduce the vibration during the transportation of concrete and cause the overall connection structure to loosen and fall off.

[0044] like Figure 5 As shown, a plurality of anchor rods 6 are fixedly connected to the bottom of the pad 51; the plurality of anchor rods 6 are distributed in a circular array; the bottom of the anchor rods 6 is a conical structure; during operation, when the pad 51 contacts the ground, the plurality of anchor rods 6 at the bottom of the pad 51 will be inserted into the soil on the ground. Through the above structure, the anchor rods 6 are arranged to connect the pad 51, which can improve the tightness of the connection between the pad 51 and the ground. At this time, the position movement of the overall equipment can be reduced to improve the stability during use.

[0045] like Figure 4 As shown, a sealing gasket 7 is fixedly connected to the inner wall of the clamping plate 24; the sealing gasket 7 is made of flexible material; during operation, when the clamping plate 24 fixes the pipeline, the sealing gasket 7 on the inner wall of the clamping plate 24 will contact the outside of the pipeline, and at this time, the sealing gasket 7 can seal the pipeline and the discharge pipe 13. Through the above structure, the sealing gasket 7 is arranged to connect the clamping plate 24, which can seal the pipeline and the discharge pipe 13 to reduce the leakage of concrete from the gap between the discharge pipe 13 and the pipeline during transportation.

[0046] like Figure 3As shown, the side wall of the feed hopper 12 is fixedly connected with a collecting box 8; the collecting box 8 is set with a top opening; the collecting box 8 is close to the bottom of the discharge port 17; during operation, when the push plate 16 pushes the aggregate filtered by the filter screen 14 out of the discharge port 17, the aggregate will fall into the collecting box 8 below the discharge port 17 and be collected. Through the above structure, the collecting box 8 can be set to collect the aggregate pushed out from the discharge port 17 to reduce the situation where the aggregate is scattered on the ground and affects the construction.

[0047] Working principle: When pouring concrete on the installed arch frame, connect the pipeline to the discharge pipe 13, then add concrete into the feed hopper 12, start the bottom plate 1 to send the concrete into the pipeline and flow to the pouring area. When the concrete enters the feed hopper 12, it will pass through the filter 14. At this time, the filter 14 will filter the concrete and filter out the larger aggregates in the concrete. When the top surface of the concrete is lower than the filter 14, pull out the plug plate 18 and then start the first hydraulic cylinder 15 to stretch it. At this time, it can drive the push plate 16 to move toward the discharge port 17. At this time, the push plate 16 pushes the larger aggregates filtered out from the top of the filter 14 from the discharge port 17, and then the first hydraulic cylinder 15 is retracted to drive the push plate 16 to reset, and then the plug plate 18 is pulled out. Insert it into the discharge port 17. When connecting the concrete conveying pipe to the discharge pipe 13, align the end of the pipe with the end of the discharge pipe 13, and then turn the handle 22 to drive the bidirectional screw 21 to rotate. At this time, the slider 23 can slide in opposite directions in the slide rail 2. At this time, the slider 23 can drive the clamping plate 24 to move in opposite directions. When the bidirectional screw 21 rotates clockwise, it can drive the clamping plates 24 to approach each other. At this time, the clamping plates 24 will cover the pipe and the discharge pipe 13, and the pipe and the discharge pipe 13 can be fixed together. When the pipe needs to be disassembled, the handle 22 can be turned counterclockwise. At this time, the clamping plates 24 are driven away from each other, and the fixation of the pipe can be released. When the clamping plates 24 approach each other to fix the pipe, the clamping plates 24 will drive the clamping plates 24 on both sides when they are close. The fixing plate 31 and the fixing frame 3 are close to each other. When the clamping plates 24 on both sides are in contact, the fixing plate 31 will be inserted into the fixing frame 3, and then the fixing pin 32 will be inserted into the fixing frame 3 and the fixing plate 31. At this time, the fixing frame 3 and the fixing plate 31 can be connected and fixed. When disassembling, the fixing pin 32 should be removed first, and then the clamping plates 24 will drive the fixing frame 3 and the fixing plate 31 to move away from each other. Before conveying concrete, push the bottom plate 1 into position, start the second hydraulic cylinder 4 to stretch and drive the support plate 41 to move toward the ground. At this time, after the support plate 41 contacts the ground, it can be supported and reinforced from the outside of the bottom plate 1. After use, start the second hydraulic cylinder 4 to retract and drive the support plate 41 away from the ground. When the second hydraulic cylinder 4 drives the fixing plate 3 When the support plate 1 moves toward the ground, it will drive the damping spring 5 and the pad 51 to move toward the ground. At this time, the pad 51 will contact the ground. During the transportation of concrete, more vibrations will be generated. When the vibrations are transmitted to the damping spring 5, the damping spring 5 will continuously contract and rebound to buffer and reduce vibration. When the pad 51 contacts the ground, multiple anchor rods 6 at the bottom of the pad 51 will be inserted into the soil on the ground. When the clamping plate 24 fixes the pipeline, the sealing gasket 7 on the inner wall of the clamping plate 24 will contact the outside of the pipeline. At this time, the sealing gasket 7 can seal between the pipeline and the discharge pipe 13. When the push plate 16 pushes the aggregate filtered by the filter screen 14 out of the discharge port 17, the aggregate will fall into the collection box 8 below the discharge port 17 and be collected.

[0048] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tunnel blind hole first forms a ring and then steel pipe grouting piles to reinforce the foundation construction and device, characterized by: The specific steps of the construction method are as follows: S1: Conduct geological survey, process planning, and preparation of materials and equipment before construction; S2: Measure and excavate the invert according to the design, and install steel arch support. Afterwards, a rigid guide tube is welded on the steel arch; S3: Use concrete pouring equipment to pour concrete on the installed arch frame. When the concrete solidifies and takes shape, perform pile foundation drilling operations; S4: After the pile foundation hole is drilled, a steel pipe pile is driven into the hole. After the pile driving is completed, gravel is filled on the outside of the steel pipe pile and then ultra-fine cement slurry is injected for reinforcement, thereby completing the construction of the blind hole invert arch.

2. A concrete pouring device, which is suitable for any one of the tunnel blind hole ring-forming and then steel pipe grouting pile reinforcement foundation construction methods in claim 1, characterized in that; The concrete pouring equipment described in S3 includes a base plate (1); a conveying pump body (11) is fixedly connected to the top of the base plate (1); a feed hopper (12) is fixedly connected to the top of the base plate (1); a discharge pipe (13) is connected to the side wall of the feed hopper (12); a filter screen (14) is installed on the inner side wall of the feed hopper (12); a first hydraulic cylinder (15) is fixedly connected to the side wall of the feed hopper (12); a push plate (16) is fixedly connected to the end of the first hydraulic cylinder (15); the push plate (16) is in contact with the filter screen (14); a discharge port (17) is provided on the side wall of the feed hopper (12) away from the first hydraulic cylinder (15); and a plug plate (18) is slidably fitted in the discharge port (17).

3. A concrete pouring device according to claim 2, characterized in that: The top of the discharge pipe (13) is fixedly connected to a slide rail (2); the inner wall of the slide rail (2) is rotatably connected to a bidirectional screw (21); the end of the bidirectional screw (21) is fixedly connected to a plurality of turning handles (22); the middle of the bidirectional screw (21) is threadedly connected to a pair of sliders (23); the side walls of the sliders (23) are fixedly connected to a clamping plate (24); the pair of clamping plates (24) are both semicircular in structure and are arranged correspondingly.

4. A concrete pouring device according to claim 3, characterized in that: A fixing frame (3) is fixedly connected to the side wall of the card plate (24) on one side; a fixing plate (31) is fixedly connected to the side wall of the card plate (24) on the other side; the fixing frame (3) and the fixing plate (31) are mutually engaged; the fixing frame (3) and the fixing plate (31) are both arranged near the top of the card plate (24); a fixing pin (32) is slidably matched in the middle of the fixing frame (3) and the fixing plate (31).

5. A concrete pouring device according to claim 4, characterized in that: A plurality of second hydraulic cylinders (4) are fixedly connected to the side wall of the base plate (1); the plurality of second hydraulic cylinders (4) are symmetrically arranged in pairs; the output ends of the second hydraulic cylinders (4) are arranged toward the bottom of the base plate (1); and the ends of the second hydraulic cylinders (4) are fixedly connected to a support plate (41).

6. A concrete pouring device according to claim 5, characterized in that: A plurality of damping springs (5) are fixedly connected to the bottom of the support plate (41); the plurality of damping springs (5) are evenly distributed on the bottom of the support plate (41); and a pad (51) is commonly fixedly connected to the bottom of the plurality of damping springs (5).

7. A concrete pouring device according to claim 6, characterized in that: A plurality of anchor rods (6) are fixedly connected to the bottom of the pad (51); the plurality of anchor rods (6) are distributed in a circular array; and the bottom of the anchor rods (6) is in a conical structure.

8. A concrete pouring device according to claim 6, characterized in that: A sealing gasket (7) is fixedly connected to the inner side wall of the clamping plate (24); the sealing gasket (7) is made of a flexible material.

9. A concrete pouring device according to claim 6, characterized in that: A collecting box (8) is fixedly connected to the side wall of the feed hopper (12); the collecting box (8) is arranged with an opening at the top; and the collecting box (8) is close to the bottom of the discharge port (17).