A device and method for correcting deformation of underground structures

Abstract

The present invention belongs to the field of building construction technology, and discloses a device and method for correcting the deformation of underground structures. The device for correcting the deformation of underground structures includes an electromagnetic control system, a folding bag, and a grouting device. The electromagnetic control system includes a control module and an electromagnetic coil group. The control module controls the electromagnetic coil group to generate a repulsive magnetic force to drive two push blocks to move in opposite directions to open the folding bag. The folding bag opens and squeezes the soil at the deformed position of the underground structure to correct the deformed position. According to the real-time change of the deformed position, the control module adjusts the distance of the push blocks moving in opposite directions by adjusting the magnitude of the repulsive magnetic force, thereby dynamically adjusting the volume of the folding bag; the grouting device can inject slurry into the folding bag after it is expanded. The device for correcting the deformation of underground structures can dynamically adjust the volume of the folding bag in real time according to the deformation amount of the deformed position of the underground structure, so as to achieve the purpose of accurately correcting the deformed position.

Description

Technical Field

[0001] The present invention relates to the technical field of building construction, and in particular to a device and method for correcting deformation of an underground structure. Background Art

[0002] With the rapid development of my country's economy, the demand for urban space capacity has increased, and traffic pressure has intensified. The rational development of urban underground space has become particularly important. However, the construction of underground structures is more complicated than that of above-ground structures. There are many factors to consider and many unpredictable factors. For example, during the excavation of the foundation pit, the unloading effect of the surrounding soil will cause the foundation pit to deform to a certain extent, thereby causing corresponding displacement and deformation of nearby buildings (such as tunnels) along with the soil, thereby endangering the safety of nearby buildings. Therefore, in order to reduce the impact of underground structure construction on surrounding buildings and protect the overall stability and safety of the underground structure, it is necessary to control the deformation of the underground structure.

[0003] In the existing technology, the method for controlling the deformation of underground structures such as foundation pits is mainly achieved through bladder grouting. However, the expansion of the bladder in this method is based on the amount of slurry injected. The solidification time of the slurry is usually relatively short. Once the slurry solidifies, the volume of the bladder cannot be changed, and real-time control of the volume change of the bladder cannot be achieved, which leads to low deformation correction accuracy. Summary of the Invention

[0004] One purpose of the present invention is to provide a correction device for underground structure deformation, which generates repulsive magnetic forces through two electromagnetic coils to move two pushing blocks away from each other, thereby expanding the folding bag, and can dynamically adjust the size of the folding bag expansion in real time according to the size of the repulsive magnetic forces.

[0005] To achieve this object, the present invention adopts the following technical solutions:

[0006] A device for correcting deformation of an underground structure, used for correcting the deformed position of the underground structure, comprising:

[0007] An electromagnetic control system includes a control module and an electromagnetic coil assembly, wherein the electromagnetic coil assembly includes two electromagnetic coils, and the two electromagnetic coils are respectively fixedly arranged on two push blocks. The control module is capable of causing the two electromagnetic coils to generate repulsive magnetic forces, and the two push blocks move away from each other under the action of the repulsive magnetic forces. The control module is also capable of adjusting the distance the two push blocks move away from each other by adjusting the magnitude of the repulsive magnetic forces.

[0008] A foldable bag is provided at a preset position, the preset position being corresponding to the deformation position, the two pushing blocks being provided in the foldable bag, and the two pushing blocks being able to open the foldable bag when moving away from each other;

[0009] A grouting device is configured to inject slurry into the expanded folded bag.

[0010] As an optional solution, there are multiple groups of electromagnetic coils, and the multiple electromagnetic coils arranged on each of the pushing blocks are spaced apart along a direction perpendicular to the moving direction of the pushing blocks.

[0011] As an optional solution, the control module can independently control the magnitude of the repulsive magnetic force of each group of electromagnetic coils.

[0012] As an optional solution, the grouting device includes a grouting pump and a grouting pipe, one end of the grouting pipe is connected to the grouting pump, and the other end is connected to the folding bag, and the grouting pump can inject the slurry into the folding bag through the grouting pipe.

[0013] As an optional solution, a flow meter is provided on the grouting pipe.

[0014] As an optional solution, the pushing block and the electromagnetic coil are wrapped in a protective sleeve, and the protective sleeve can prevent the slurry from corroding the pushing block and the electromagnetic coil.

[0015] As an optional solution, a straight sleeve is provided on the foldable bag, and the straight sleeve can drive the foldable bag to be lowered to the preset position.

[0016] As an optional solution, the material of the foldable bag is polymer rubber.

[0017] Another object of the present invention is to provide a method for correcting deformation of an underground structure, using the device for correcting deformation of an underground structure in any of the above-mentioned solutions, and the method for correcting deformation of an underground structure comprises the following steps:

[0018] S1: Determine the drilling position and depth on the ground according to the deformation position and deformation amount of the underground structure;

[0019] S2: Drilling is performed at the drilling position until the drilling depth is reached, and the folded bag is lowered to a preset position corresponding to the deformation position;

[0020] S3: The control module controls the electromagnetic coil assembly to generate a repulsive magnetic force, and the two pushing blocks move in opposite directions under the action of the repulsive magnetic force to expand the foldable bag;

[0021] S4: the control module dynamically adjusts the magnitude of the set repulsive magnetic force;

[0022] S5: The grouting device injects slurry into the folded bag.

[0023] As an optional solution, the underground structure is provided with a monitoring device for monitoring the deformation amount.

[0024] Beneficial effects of the present invention:

[0025] The present invention provides a device for correcting the deformation of an underground structure, which is used to correct the deformed position of the underground structure. The device includes an electromagnetic control system, a folding bag, and a grouting device. The electromagnetic control system includes a control module and an electromagnetic coil assembly. The control module controls the electromagnetic coil assembly to generate a repulsive magnetic force to drive two push blocks to move away from each other to expand the folding bag. The folding bag expands and squeezes the soil at the deformed position of the underground structure to correct the deformed position. Based on the real-time changes in the deformed position, the control module adjusts the distance the push blocks move away from each other by adjusting the magnitude of the repulsive magnetic force, thereby dynamically adjusting the volume of the folding bag. The grouting device can inject slurry into the expanded folding bag to form a solidified body. The device can dynamically adjust the volume of the folding bag in real time based on the deformation amount of the deformed position of the underground structure to achieve the purpose of accurately correcting the deformed position. After the underground structure stabilizes, slurry is injected into the expanded folding bag to form a solidified body to ensure the permanent stability of the underground structure.

[0026] The present invention also provides a method for correcting deformation of underground structures. The above-mentioned correction device for underground structure deformation can correct the deformation of the underground structure, thereby improving the overall stability and safety of the underground structure and reducing the impact of underground structure construction on surrounding buildings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 1 is a schematic structural diagram of a device for correcting deformation of an underground structure according to an embodiment of the present invention;

[0028] Figure 2 It is a schematic diagram of the foldable pouch according to an embodiment of the present invention when it is expanded.

[0029] In the picture:

[0030] 1-electromagnetic control system; 11-control module; 12-electromagnetic coil assembly; 121-electromagnetic coil;

[0031] 2- Push block;

[0032] 3-Folding pouch;

[0033] 4- grouting device; 41- grouting pump; 42- grouting pipe; 43- flow meter;

[0034] 5-Straight casing. DETAILED DESCRIPTION

[0035] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present invention, but are not to be construed as limiting the present invention.

[0036] In the description of the present invention, unless otherwise expressly specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they may refer to fixed or detachable connections, mechanical or electrical connections, direct or indirect connections through an intermediate medium, and internal communication between two elements or interaction between two elements. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0037] In the description of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first feature being in direct contact with the second feature, or may include the first feature being in contact with the second feature through another feature between them instead of being in direct contact. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0038] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0039] The present invention provides a device for correcting the deformation of underground structures. For example, during foundation pit excavation, the unloading of the surrounding soil causes the pit to deform, which can affect adjacent buildings. Therefore, correction control of the underground structure is necessary.

[0040] like Figure 1-Figure 2As shown, the underground structure deformation correction device in this embodiment includes an electromagnetic control system 1, a folding bag 3, and a grouting device 4. The electromagnetic control system 1 includes a control module 11 and an electromagnetic coil group 12. The electromagnetic coil group 12 includes two electromagnetic coils 121, and the two electromagnetic coils 121 are respectively fixedly arranged on two pushing blocks 2. The two pushing blocks 2 are arranged in the folding bag 3. The control module 11 can make the two electromagnetic coils 121 generate repulsive magnetic forces. The two pushing blocks 2 can move away from each other under the repulsive magnetic forces of the two electromagnetic coils 121. The folding bag 3 is located at a preset position, and the preset position is set corresponding to the deformation position of the underground structure. When the two pushing blocks 2 move away from each other, the folding bag 3 can be opened. The folding bag 3 is located at the preset position and squeezes the soil when it is opened to correct the deformation position corresponding to the preset position in the underground structure. In addition, the control module 11 can also adjust the magnitude of the repulsive magnetic force between the two electromagnetic coils 121. The greater the repulsive magnetic force, the greater the distance the two pushing blocks 2 move away from each other, and the smaller the repulsive magnetic force, the smaller the distance the two pushing blocks 2 move away from each other. Therefore, by adjusting the magnitude of the repulsive magnetic force, the volume of the folding bag 3 can be adjusted. During actual construction, the volume of the folding bag 3 is dynamically adjusted according to the real-time changes in the deformation position of the underground structure, making the correction more accurate. After the correction is completed, the grouting device 4 can inject slurry into the expanded folding bag 3 to form a solidified body of the folding bag 3.

[0041] The correction device for underground structure deformation can dynamically adjust the volume of the folding bag 3 in real time according to the deformation amount of the deformation position of the underground structure, so as to achieve the purpose of accurate correction of the deformation position and meet the multiple deformation control needs; and after the underground structure tends to be stable, slurry is injected into the expanded folding bag 3 to form a solidified body to ensure that the underground structure is permanently stable.

[0042] In order to ensure that the two pushing blocks 2 can push the hard soil, multiple groups of electromagnetic coils 12 are provided. The multiple electromagnetic coils 121 provided on each pushing block 2 are spaced apart along the direction perpendicular to the movement of the pushing block 2. Figure 1 The pushing block 2 is a rectangular parallelepiped, and multiple electromagnetic coils 121 are evenly spaced along the long side of the rectangular parallelepiped. Multiple groups of electromagnetic coils 12 simultaneously generate repulsive magnetic forces to make the force generated when the two pushing blocks 2 move away from each other stronger.

[0043] Furthermore, the control module 11 can individually control the magnitude of the repulsive magnetic force of each electromagnetic coil assembly 12, so that the repulsive magnetic forces generated by each electromagnetic coil assembly 12 are equal or unequal. When the repulsive magnetic forces generated by multiple electromagnetic coil assemblies 12 are equal, the two push blocks 2 move in opposite directions and are arranged in parallel, and the folding bag 3 forms a square structure. When the repulsive magnetic forces generated by multiple electromagnetic coil assemblies 121 increase or decrease in sequence, the two push blocks 2 are arranged at an angle, and the folding bag 3 forms a regular triangle or inverted triangle structure. This design enables the folding bag 3 to use different shapes according to the different deformations of the underground structure, making the correction more targeted.

[0044] In this embodiment, four electromagnetic coil groups 12 are provided.

[0045] Optionally, the foldable bag 3 is made of polymer rubber, which has the characteristics of high strength, high elasticity and corrosion resistance.

[0046] In order to prevent the electromagnetic coil 121 and the pushing block 2 from being corroded by the slurry, the pushing block 2 and the electromagnetic coil 121 are wrapped in a protective sleeve, which can effectively prevent the slurry from entering the protective sleeve.

[0047] In this embodiment, the protective sleeve is made of polyethylene, which is corrosion-resistant and can maintain stable performance in slurry.

[0048] Continue to refer to Figure 1 The grouting device 4 includes a grouting pump 41 and a grouting pipe 42. One end of the grouting pipe 42 is connected to the grouting pump 41, and the other end is connected to the folding bag 3. The grouting pump 41 can inject slurry into the expanded folding bag 3 through the grouting pipe 42. In this embodiment, the grouting pipe 42 is a PVC pipe with an outer diameter of 100 mm.

[0049] In this embodiment, according to the actual deformation of the underground structure, the two pushing blocks 2 expand the folding bag 3 into the desired shape. The electromagnetic control system 1 can calculate the volume after expansion based on the shape of the folding bag 3, and the grouting pump 41 quantitatively injects slurry into the folding bag 3 according to the calculated volume.

[0050] In order to accurately measure the flow rate through the grouting pipe 42, a flow meter 43 is provided on the grouting pipe 42. The flow meter 43 can accurately measure the flow rate, thereby achieving the purpose of quantitative transportation.

[0051] Continue to refer to Figure 1A straight sleeve 5 is provided on the foldable bag 3. When lowering the foldable bag 3 to the desired depth, the straight sleeve 5 is used to lower the bag 3 to the desired depth, making the operation more convenient. Furthermore, the wires controlling the electromagnetic coil 121 are routed through a wire collection tube, which is routed within the straight sleeve 5 to protect the wires and the tube. Furthermore, the grouting pipe 42 is routed through the straight sleeve 5 to protect the grouting pipe 42. In this embodiment, the wire collection tube is a PVC pipe with an outer diameter of 100 mm.

[0052] The present invention also provides a method for correcting deformation of underground structures. By using the above-mentioned device for correcting deformation of underground structures, the deformation of underground structures can be corrected, thereby improving the overall stability and safety of the underground structure and reducing the impact of underground structure construction on surrounding buildings.

[0053] The method for correcting deformation of an underground structure comprises the following steps:

[0054] S1: Determine the drilling position and depth on the ground according to the deformation position and deformation amount of the underground structure;

[0055] Determining a preset position corresponding to the deformed position according to the deformed position, and then determining a drilling position and a drilling depth on the ground according to the preset position;

[0056] S2: Drilling is performed at the drilling position and reaches the drilling depth, and the foldable bag 3 is placed down to the preset position;

[0057] Drilling equipment is used to perform drilling construction at the drilling position and reach the required drilling depth, so that the folding bag 3 can be set at a preset position. The preset position is set opposite to the deformed position of the underground structure and has a preset distance. When the folding bag 3 is expanded at the preset position, the deformed position can be restored by squeezing the soil at the preset position.

[0058] S3: The control module 11 controls the electromagnetic coil 121 to generate a repulsive magnetic force. Under the action of the repulsive magnetic force, the two pushing blocks 2 move away from each other to expand the foldable bag 3;

[0059] The repulsive magnetic force is set according to the deformation amount, and the foldable bag 3 can be expanded to a set volume by the set repulsive magnetic force to accurately correct the deviation.

[0060] S4: The control module 11 dynamically adjusts the magnitude of the set repulsive magnetic force;

[0061] After the underground structure is corrected, it will take some time for it to stabilize. Dynamically adjusting the magnitude of the repulsive magnetic force before the underground structure stabilizes can achieve more accurate correction.

[0062] S5: The grouting device 4 injects slurry into the folded bag 3.

[0063] After the underground structure is stabilized, the electromagnetic control system 1 calculates the volume of the folding bag 3 according to the shape of the folding bag 3, and the grouting device 4 injects a certain amount of slurry equal to the volume into the expanded folding bag 3. After the slurry solidifies, the folding bag 3 forms a solidified body filled with slurry, and the correction is completed.

[0064] Furthermore, a monitoring device for monitoring deformation is provided on the underground structure. The deformation of the underground structure can be effectively monitored by the monitoring device. The electromagnetic control system 1 precisely controls the electromagnetic coil group 12 by controlling the monitoring device to monitor the deformation of the underground structure.

[0065] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A device for correcting deformation of underground structures, used for correcting the deformation position of underground structures, characterized in that: The underground structure deformation correction device includes: An electromagnetic control system (1) comprises a control module (11) and an electromagnetic coil group (12), wherein the electromagnetic coil group (12) comprises two electromagnetic coils (121), and the two electromagnetic coils (121) are respectively fixedly arranged on two push blocks (2); the control module (11) can cause the two electromagnetic coils (121) to generate repulsive magnetic forces, and the two push blocks (2) move away from each other under the action of the repulsive magnetic forces; and the control module (11) can adjust the distance that the two push blocks (2) move away from each other by adjusting the magnitude of the repulsive magnetic forces; A folding bag (3) is arranged at a preset position, the preset position being arranged corresponding to the deformation position, the two pushing blocks (2) being arranged in the folding bag (3), and the two pushing blocks (2) being able to open the folding bag (3) when moving away from each other; a grouting device (4), the grouting device (4) being configured to inject slurry into the expanded folding bag (3); The electromagnetic coil group (12) is provided in multiple groups, and the multiple electromagnetic coils (121) provided on each of the pushing blocks (2) are spaced apart along a direction perpendicular to the moving direction of the pushing block (2); The control module (11) is capable of individually controlling the magnitude of the repulsive magnetic force of each set of electromagnetic coil groups (12).

2. The underground structure deformation correction device according to claim 1, characterized in that: The grouting device (4) comprises a grouting pump (41) and a grouting pipe (42); one end of the grouting pipe (42) is connected to the grouting pump (41), and the other end is connected to the folding bag (3); the grouting pump (41) can inject the slurry into the folding bag (3) through the grouting pipe (42).

3. The underground structure deformation correction device according to claim 2, characterized in that: The grouting pipe (42) is provided with a flow meter (43).

4. The underground structure deformation correction device according to claim 1, characterized in that: The pushing block (2) and the electromagnetic coil (121) are wrapped in a protective sleeve, and the protective sleeve can prevent the slurry from corroding the pushing block (2) and the electromagnetic coil (121).

5. The underground structure deformation correction device according to claim 1, characterized in that: A straight sleeve (5) is provided on the folding bag (3), and the straight sleeve (5) can drive the folding bag (3) to be lowered to the preset position.

6. The underground structure deformation correction device according to any one of claims 1 to 5, characterized in that: The material of the foldable bag (3) is polymer rubber.

7. A method for correcting deformation of underground structures, characterized in that: The underground structure deformation correction device according to any one of claims 1 to 6 is used, and the underground structure deformation correction method comprises the following steps: S1: Determine the drilling position and depth on the ground according to the deformation position and deformation amount of the underground structure; S2: drilling at the drilling position and reaching the drilling depth, and lowering the folding bag (3) to a preset position corresponding to the deformation position; S3: The control module (11) controls the electromagnetic coil assembly (12) to generate a repulsive magnetic force, and the two pushing blocks (2) move in opposite directions under the action of the repulsive magnetic force to open the foldable bag (3); S4: the control module (11) dynamically adjusts the magnitude of the set repulsive magnetic force; S5: The grouting device (4) injects slurry into the folded bag (3).

8. The method for correcting deformation of underground structures according to claim 7, characterized in that: The underground structure is provided with a monitoring device for monitoring the deformation amount.

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