A grouting double-locking pressure real-time sensing system and a method of using the same

Abstract

The application discloses a grouting double-locking pressure real-time sensing system and a use method thereof. The system comprises a positioning structure fixed to the ground, an expandable positioning structure penetrating through the positioning structure and connected with a grouting structure at an input end, and a pressure real-time monitoring assembly connected with the expandable positioning structure. The expandable positioning structure comprises a hollow conduit, an expandable assembly, an upper positioning piece and a lower positioning piece. The upper positioning piece and the lower positioning hole are respectively connected with two ends of the expandable assembly. The hollow conduit penetrates through the upper positioning piece and the lower positioning piece and is threadedly connected with the lower positioning piece. The upper positioning piece is fixedly connected with the positioning structure. When the hollow conduit is rotated, the lower positioning piece moves up and down to realize expansion or contraction of the expandable assembly. The method comprises the following steps: drilling a grouting hole, installing the expandable positioning structure, installing the positioning structure, rotating the hollow conduit, forming an outward expansion structure by the expandable assembly, connecting the grouting structure with the hollow conduit, and grouting. The application monitors the grouting state and guarantees the grouting effect.

Description

Technical Field

[0001] This invention relates to the field of grouting in geotechnical engineering, and in particular to a real-time sensing system for dual-locking grouting pressure and its usage method. Background Technology

[0002] With the rapid development of my country's economy, a large number of new and existing infrastructure projects are being built. For example, the mileage of road projects increases significantly every year, and the number of underground infrastructure such as tunnels is also increasing. Due to improper design and construction in the early stages or improper maintenance in the later stages, defects gradually appear, such as cracks in concrete structures, voids and cavities in roads, subsidence in pipelines, and settlement of high-speed railway track slabs. These problems seriously affect the safety of projects and people's daily lives. These problems often require treatment, and trenchless grouting is currently a commonly used method.

[0003] Existing grouting devices, such as the controllable rotating grouting head and grouting method described in patent number 202110948644.3, use a rotating grouting head to cut the soil, creating controllable cavities in the pile body. Compared to traditional grouting, this effectively overcomes the drawbacks of traditional grouting, such as difficulty in controlling grout flow and low grout utilization. However, for the treatment of reinforcement and uplift defects, high-pressure grouting is often used, which requires a high degree of stability in the connection of the grouting device. Conventional insert-type grouting heads or simple external sleeve grouting devices cannot meet the requirements of high-pressure grouting, nor can they monitor the supply pressure and borehole pressure during the grouting process. After grouting, changes in borehole pressure cannot be monitored, leading to significant uncertainty in construction and potentially causing secondary damage to structural defects, thus failing to ensure the quality of project repair. Summary of the Invention

[0004] The purpose of this invention is to provide a real-time sensing system for dual-locking pressure in grouting and its usage method, which solves the locking problem and pressure monitoring problem in high-pressure grouting.

[0005] This invention is implemented as follows: a real-time pressure sensing system for grouting with dual locking mechanisms. The sensing system includes a positioning structure, an expandable positioning structure, a real-time pressure monitoring component, and a grouting structure. The positioning structure is fixed to the ground. The expandable positioning structure passes through the positioning structure, and its input end is connected to the grouting structure. The real-time pressure monitoring component is connected to the expandable positioning structure to monitor the pressure within the grouting hole and the grouting supply pressure, and feeds this information back to the receiving end.

[0006] The expandable positioning structure includes a hollow conduit, an expandable component, an upper positioning member, and a lower positioning member. The upper positioning member and the lower positioning hole are respectively connected to both ends of the expandable component. The hollow conduit passes through the upper positioning member and the lower positioning member and is threadedly connected to the upper positioning member and the lower positioning member. The upper positioning member is fixedly connected to the positioning structure. When the hollow conduit is rotated, the lower positioning member moves up and down to realize the expansion or contraction of the expandable component.

[0007] Both the upper and lower positioning parts are nuts. The upper positioning part is fixedly connected to the positioning structure to increase stability. When the hollow tube moves downward, the lower positioning part moves upward and approaches the upper positioning part, thereby causing the expandable component to expand. Conversely, it contracts. In the expanded state, it forms an internal bolt, achieving internal locking.

[0008] A further technical solution of the present invention is: the expandable component includes a plurality of strips with bendable centers, the strips being made of rigid material.

[0009] A further technical solution of the present invention is: the expandable component includes two strips symmetrical to the hollow conduit, and the strips are made of iron or high-density polyethylene.

[0010] A further technical solution of the present invention is that the hollow conduit and the grouting structure are connected by a nut.

[0011] A further technical solution of the present invention is: the positioning structure includes a positioning plate and a through hole opened in the middle of the positioning plate, the positioning plate is provided with a connecting hole that is fixedly connected to the ground by a connector, and the expandable positioning structure passes through the through hole.

[0012] The positioning plate can be round or square. The connecting component is a locking bolt, which fixes the positioning plate to the ground, making the upper positioning component fixedly connected to the positioning plate stable, thereby ensuring the stability of the expandable positioning structure and the stability during high-pressure grouting. At the same time, the positioning plate can also seal the outer periphery of the grouting hole to prevent grout liquid from leaking out and ensure the grouting effect.

[0013] A further technical solution of the present invention is that the upper positioning member passes through the through hole and is fixedly connected to the anchor plate.

[0014] A further technical solution of the present invention is as follows: the real-time pressure monitoring component includes a pressure sensor and a computer communicatively connected to the pressure sensor. The pressure sensor is placed on the hollow conduit for monitoring the supply pressure of the equipment and the pressure inside the grouting hole during the grouting process. The pressure sensor includes a first sensor disposed inside the hollow conduit for monitoring the supply pressure of the equipment during the grouting process, and a second sensor disposed outside the hollow conduit for monitoring the pressure inside the grouting hole during the grouting process. Both the first and second sensors are communicatively connected to the computer.

[0015] The pressure sensor is connected to a computer, which can sense the supply pressure of the equipment during the grouting process in real time, as well as the pressure inside the hole in real time, and can also monitor the changes in the internal pressure of the structure after grouting.

[0016] Pressure sensors can monitor the supply pressure of the equipment during grouting, as well as the pressure inside the hole, and can monitor the changes in internal pressure of the structure after grouting.

[0017] A further technical solution of the present invention is: a one-way switch is provided on the hollow conduit. The pressure sensor is placed below the one-way switch.

[0018] A further technical solution of the present invention is: the grouting structure includes a grouting machine and a grouting pipe connected to the output end of the grouting machine, the grouting pipe is connected to the hollow conduit, and a grouting switch is provided on the grouting conduit.

[0019] A further technical solution of the present invention is that the thread direction of the upper positioning member is consistent with the thread direction of the lower positioning member. This ensures that when the hollow conduit moves downward along the upper positioning member, the lower positioning member simultaneously moves upward and approaches the upper positioning member, thereby expanding the expandable component. When the hollow conduit moves upward along the upper positioning member, the lower positioning member moves downward, causing the expandable component to straighten.

[0020] A further technical solution of the present invention is that the thread pitch of the upper positioning member is smaller than that of the lower positioning member. This makes the movement distance of the lower positioning member greater than the movement distance of the upper positioning member on the hollow conduit, allowing the expandable component to expand or contract more quickly. The outer periphery of the hollow conduit, which is threadedly engaged with the upper and lower positioning members, is provided with a thread pitch that engages with the upper and lower positioning members.

[0021] The present invention also provides a method for real-time sensing of grouting dual-locking pressure, the method being based on the aforementioned sensing system, and the method comprising the following steps:

[0022] Step 1: Drill grouting holes at the predetermined location, install the positioning structure, and fix the positioning structure to the ground using connectors;

[0023] Step 2: The upper positioning member of the expandable positioning structure passes through the positioning structure and is fixed to the positioning structure. At this time, the expandable positioning structure contracts.

[0024] Step 3: Rotate the hollow guide tube to make the lower positioning part move upward, and the lower end of the expandable component move upward, causing the middle part of the strip to bend. The entire expandable component forms an outward expansion structure, increasing the friction with the grouting channel for internal locking.

[0025] Step 4: Connect the grouting structure to the hollow conduit and perform grouting.

[0026] A further technical solution of the present invention is: in step one, grouting channels are drilled at predetermined locations as needed, the depth of the holes is determined according to the technical solution to the location of the defect, and the channels are cleaned.

[0027] A further technical solution of the present invention is: in step four, the grouting structure is connected to the hollow conduit, and the one-way switch and the grouting switch are turned on to perform grouting.

[0028] The beneficial effects of this invention are as follows: This invention has a reasonable design and compact structure. Pressure sensors are installed inside and outside the hollow conduit, which can sense the internal pressure of the structure in real time during grouting, inside the grouting hole and after grouting, and monitor the grouting status. At the same time, through the external fixing of the positioning structure and the expansion of the internal expandable positioning structure, the problem of excessive internal pressure caused by high pressure grouting and excessive grouting, resulting in slippage and detachment of the grouting conduit and affecting the grouting effect is solved, thus ensuring the grouting effect.

[0029] The positioning plate can be round or square. The connecting piece is a locking bolt, which fixes the positioning plate to the ground, making the upper positioning piece fixedly connected to the positioning plate stable, thereby ensuring the stability of the expandable positioning structure and the stability during the high-pressure grouting process. At the same time, the positioning plate can also seal the outer periphery of the grouting hole to prevent the grouting liquid from leaking out and ensure the grouting effect.

[0030] The pressure sensor is connected to a computer, which can sense the supply pressure of the equipment during the grouting process in real time, as well as the pressure inside the hole in real time, and can also monitor the changes in the internal pressure of the structure after grouting. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a real-time sensing system for grouting dual-locking pressure provided by the present invention;

[0032] Figure 2 This is a schematic diagram of the expandable positioning structure provided by the present invention;

[0033] Figure 3 This is a schematic diagram of the positioning structure provided by the present invention.

[0034] Reference numerals: 1. Positioning structure, 2. Expandable positioning structure, 3. Real-time pressure monitoring component, 4. Grouting structure, 5. One-way switch, 6. Grouting switch, 21. Hollow conduit, 22. Expandable component, 23. Upper positioning component, 24. Lower positioning component, 11. Positioning plate, 12. Through hole, 13. Connecting hole, 31. Pressure sensor, 32. Computer, 41. Grouting machine, 42. Grouting pipe. Detailed Implementation

[0035] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0036] It should be noted that the structures, proportions, sizes, etc., illustrated in the accompanying drawings are merely for illustrative purposes to aid those skilled in the art and to facilitate understanding and reading. They are not intended to limit the scope of the invention and therefore have no substantial technical significance. Any modifications to the structure, changes in proportions, or adjustments to size, without affecting the effectiveness and purpose of the invention, should still fall within the scope of the technical content disclosed herein. Furthermore, the terms "upper," "lower," "left," "right," "middle," and "one" used in this specification are merely for clarity and not intended to limit the scope of the invention. Changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

[0037] Example 1:

[0038] Figure 1-3 A real-time grouting dual-locking pressure sensing system is shown.

[0039] The sensing system includes a positioning structure 1, an expandable positioning structure 2, a real-time pressure monitoring component 3, and a grouting structure 4. The positioning structure 1 is fixed to the ground. The expandable positioning structure 2 passes through the positioning structure 1 and its input end is connected to the grouting structure 4. The real-time pressure monitoring component 3 is connected to the expandable positioning structure 2 to monitor the pressure inside the grouting hole and the supply pressure of the grouting equipment, and feeds the information back to the receiving end.

[0040] The expandable positioning structure 2 includes a hollow conduit 21, an expandable component 22, an upper positioning member 23, and a lower positioning member 24. The upper positioning member 23 and the lower positioning hole 24 are respectively connected to both ends of the expandable component 22. The hollow conduit 21 passes through the upper positioning member 23 and the lower positioning member 24 and is threadedly connected to the upper positioning member 23 and the lower positioning member 24. The upper positioning member 23 is fixedly connected to the positioning structure 1. When the hollow conduit 21 is rotated, the lower positioning member 24 moves up and down to realize the expansion or contraction of the expandable component 22.

[0041] Both the upper and lower positioning parts are nuts. The upper positioning part is fixedly connected to the positioning structure to increase stability. When the hollow tube moves downward, the lower positioning part moves upward and approaches the upper positioning part, thereby causing the expandable component to expand. Conversely, it contracts. In the expanded state, it forms an internal bolt, achieving internal locking.

[0042] In this embodiment, the expandable component 22 includes a plurality of centrally flexible strips, which are made of a rigid material.

[0043] In a preferred embodiment, the expandable component 22 includes two strips symmetrical to the hollow conduit 21, the strips being made of iron or high-density polyethylene.

[0044] In this embodiment, the hollow conduit 21 is connected to the grouting structure 4 by a nut.

[0045] In this embodiment, the positioning structure 1 includes a positioning plate 11 and a through hole 12 formed in the middle of the positioning plate 11. The positioning plate 11 is provided with a connecting hole 13 that is fixedly connected to the ground by a connector. The expandable positioning structure 2 passes through the through hole 12.

[0046] In a preferred embodiment, the positioning plate can be either circular or square. The connecting component is a locking bolt, which fixes the positioning plate to the ground, ensuring the stability of the upper positioning component fixedly connected to the positioning plate. This guarantees the stability of the expandable positioning structure and ensures stability during high-pressure grouting. Simultaneously, the positioning plate also seals the outer periphery of the grouting hole, preventing grout from leaking out and ensuring the effectiveness of the grouting.

[0047] In this embodiment, the upper positioning member 23 passes through the through hole 12 and is fixedly connected to the anchor plate 11.

[0048] In this embodiment, the real-time pressure monitoring component 3 includes a pressure sensor 31 and a computer 32 communicatively connected to the pressure sensor 31. The pressure sensor 31 is placed on the hollow conduit 21 to monitor the supply pressure of the equipment and the pressure inside the grouting hole during the grouting process. The pressure sensor includes a first sensor installed inside the hollow conduit for monitoring the supply pressure of the equipment during the grouting process, and a second sensor installed outside the hollow conduit for monitoring the pressure inside the grouting hole during the grouting process. Both the first and second sensors are communicatively connected to the computer.

[0049] The pressure sensor is connected to a computer, which can sense the supply pressure of the equipment during the grouting process in real time, as well as the pressure inside the hole in real time, and can also monitor the changes in the internal pressure of the structure after grouting.

[0050] Pressure sensors can monitor the supply pressure of the equipment during grouting, as well as the pressure inside the hole, and can monitor the changes in internal pressure of the structure after grouting.

[0051] In this embodiment, a one-way switch 5 is provided on the hollow conduit 21. The pressure sensor is placed below the one-way switch.

[0052] In this embodiment, the grouting structure 4 includes a grouting machine 41 and a grouting pipe 42 connected to the output end of the grouting machine 41. The grouting pipe 42 is connected to the hollow conduit 21, and a grouting switch 6 is provided on the grouting conduit 42.

[0053] In this embodiment, the thread direction of the upper positioning member is consistent with the thread direction of the lower positioning member. This ensures that as the hollow conduit moves downward along the upper positioning member, the lower positioning member simultaneously moves upward toward the upper positioning member, thereby expanding the expandable component. Conversely, as the hollow conduit moves upward along the upper positioning member, the lower positioning member moves downward, causing the expandable component to straighten.

[0054] In this embodiment, the thread pitch of the upper positioning member is smaller than that of the lower positioning member. This makes the movement distance of the lower positioning member greater than the movement distance of the upper positioning member on the hollow conduit, allowing the expandable component to expand or contract more quickly. The outer periphery of the hollow conduit, which is threadedly engaged with the upper and lower positioning members, has a thread pitch that mates with the upper and lower positioning members.

[0055] The working principle of this invention is as follows: First, a hole is drilled at a preset position and fixed to the ground through a positioning structure. Then, the expandable positioning structure passes through the through hole on the positioning plate and enters the grouting hole. The upper positioning component is fixed to the positioning plate. By rotating the hollow conduit, the expandable component expands outward to achieve locking inside the hole. The top of the hollow conduit is connected to the grouting pipe of the grouting structure through a nut. The grouting switch and the one-way switch on the hollow conduit are turned on, and grout is injected through the grouting machine. At this time, the pressure sensor can monitor the pressure during the grouting process and the pressure of the grouting hole in real time and transmit the information to the computer. The staff can make appropriate adjustments to the grouting conditions based on the feedback information on the computer to ensure the grouting effect.

[0056] Example 2:

[0057] This embodiment provides a method for real-time sensing of grouting dual-locking pressure. The method is based on the sensing system of the first embodiment and includes the following steps:

[0058] Step 1: Drill grouting holes at the predetermined location, install positioning structure 1, and fix positioning structure 1 to the ground using connectors;

[0059] Grouting ducts are drilled at predetermined locations as needed, with the hole depth determined according to the technical plan up to the location of the defect, and the ducts are then cleaned.

[0060] Step 2: The upper positioning member 23 of the expandable positioning structure 2 passes through the positioning structure 1 and is fixed to the positioning structure 1. At this time, the expandable positioning structure 2 contracts into a straight line.

[0061] Step 3: Rotate the hollow conduit 21 to make the lower positioning part 24 move upward and the lower end of the expandable component 22 move upward, causing the middle part of the strip to bend. The entire expandable component 22 forms an outward expansion structure, increasing the friction with the grouting channel for internal locking.

[0062] Step 4: Connect the grouting structure 4 to the hollow conduit 21 and perform grouting.

[0063] In this embodiment, in step one, grouting channels are drilled at predetermined locations as needed, with the hole depth reaching the location of the defect according to the technical solution, and the channels are then cleaned.

[0064] In this embodiment, in step four, the grouting structure 4 is connected to the hollow conduit 21, and the one-way switch and the grouting switch are turned on to perform grouting.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A real-time grouting dual-locking pressure sensing system, characterized in that: The sensing system includes a positioning structure (1), an expandable positioning structure (2), a real-time pressure monitoring component (3), and a grouting structure (4). The positioning structure (1) is fixed to the ground. The expandable positioning structure (2) passes through the positioning structure (1) and its input end is connected to the grouting structure (4). The real-time pressure monitoring component (3) is connected to the expandable positioning structure (2) to monitor the pressure inside the grouting hole and the supply pressure of the grouting equipment, and to feed the information back to the receiving end. The expandable positioning structure (2) includes a hollow conduit (21), an expandable component (22), an upper positioning member (23), and a lower positioning member (24). The upper positioning member (23) and the lower positioning member (24) are respectively connected to both ends of the expandable component (22). The hollow conduit (21) passes through the upper positioning member (23) and the lower positioning member (24) and is threadedly connected to the upper positioning member (23) and the lower positioning member (24). The upper positioning member (23) is fixedly connected to the positioning structure (1). When the hollow conduit (21) is rotated, the lower positioning member (24) moves up and down to realize the expansion or contraction of the expandable component (22). The thread pitch of the upper positioning member (23) is smaller than the thread pitch of the lower positioning member (24).

2. The grouting dual-locking pressure real-time sensing system according to claim 1, characterized in that, The expandable component (22) includes several centrally flexible strips made of a rigid material.

3. The grouting dual-locking pressure real-time sensing system according to claim 2, characterized in that, The expandable component (22) includes two strips symmetrical to the hollow conduit (21), the strips being made of iron or high-density polyethylene.

4. A real-time grouting dual-locking pressure sensing system according to any one of claims 1-3, characterized in that, The hollow conduit (21) is connected to the grouting structure (4) by a nut.

5. A real-time grouting dual-locking pressure sensing system according to any one of claims 1-3, characterized in that, The positioning structure (1) includes a positioning plate (11) and a through hole (12) in the middle of the positioning plate (11). The positioning plate (11) is provided with a connection hole (13) that is fixedly connected to the ground by a connector. The expandable positioning structure (2) passes through the through hole (12).

6. The grouting dual-locking pressure real-time sensing system according to claim 5, characterized in that, The upper positioning member (23) passes through the through hole (12) and is fixedly connected to the positioning plate (11).

7. A real-time grouting dual-locking pressure sensing system according to any one of claims 1-3, characterized in that, The pressure real-time monitoring component (3) includes a pressure sensor (31) and a computer (32) that is communicatively connected to the pressure sensor (31). The pressure sensor (31) is placed on the hollow conduit (21) to monitor the supply pressure of the equipment and the pressure inside the grouting hole during the grouting process.

8. A real-time grouting dual-locking pressure sensing system according to any one of claims 1-3, characterized in that, The hollow conduit (21) is equipped with a one-way switch (5).

9. A real-time grouting dual-locking pressure sensing system according to any one of claims 1-3, characterized in that, The grouting structure (4) includes a grouting machine (41) and a grouting pipe (42) connected to the output end of the grouting machine (41). The grouting pipe (42) is connected to the hollow conduit (21), and a grouting switch (6) is provided on the grouting pipe (42).

10. A method of using a real-time grouting dual-locking pressure sensing system, characterized in that, The method is based on the sensing system according to any one of claims 1-9, and the method includes the following steps: Step 1: Drill grouting holes at the predetermined location, install the positioning structure (1), and fix the positioning structure (1) to the ground using connectors. Step 2: The upper positioning member (23) of the expandable positioning structure (2) passes through the positioning structure (1); and the upper positioning member (23) is fixed to the positioning structure (1), at which time the expandable positioning structure (2) is contracted; Step 3: Rotate the hollow guide tube (21) so that the lower positioning part (24) moves upward and the lower end of the expandable component (22) moves upward. The entire expandable component (22) forms an outward expansion structure, increasing the friction with the grouting channel for internal locking. Step 4: Connect the grouting structure (4) to the hollow conduit (21) and perform grouting.

Images