Differential soil digging, pressurizing and grouting linked intelligent deviation rectifying system and method

Abstract

The invention relates to the technical field of constructional engineering, in particular to an intelligent deviation correction system and method for linkage of differential soil digging, pressurization and grouting, and the system comprises an intelligent control center, and a soil digging subsystem, a pressurization subsystem, a multi-point grouting subsystem and a monitoring subsystem which are in communication connection with the intelligent control center; the soil digging subsystem comprises a spiral soil digging device and a soil pressure monitoring sensor; the pressurizing subsystem comprises a hydraulic anchor rod pressurizing device, a tensioning device and pressure control equipment; the grouting subsystem comprises an intelligent grouting pump, a grouting pipe and a slurry storage tank; the monitoring subsystem comprises a tilt angle sensor, a displacement sensor, a soil pressure sensor and a geological radar. According to the invention, through real-time processing of multi-source data by the intelligent control center and feedback of the high-precision sensor, millimeter-level precise control of building lifting or settlement can be realized, and the correction precision is high; the sinking promoting process and the lifting process are carried out synchronously, two-way adjustment is formed, the deviation rectifying efficiency is high, and the construction period is greatly shortened.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, and specifically relates to an intelligent correction system and method that links differential soil removal, pressurization, and grouting. Background Technology

[0002] With the acceleration of urbanization, the number of existing buildings is increasing year by year. Some buildings have uneven settlement and tilting safety hazards due to factors such as improper foundation treatment, the impact of surrounding construction, and changes in geological conditions. Therefore, it is necessary to correct the tilting and settlement of buildings.

[0003] In existing technologies, traditional excavation methods suffer from insufficient settlement control precision, lacking a pressure compensation mechanism for unilateral excavation; simple anchor reinforcement is insufficient for dynamic adjustment and does not address the coordinated control of excavation and pressurization; traditional methods often implement excavation or grouting alone when dealing with differential settlement, lacking a dynamic balance between stiffness adjustment and pressure compensation; there is also a lack of real-time monitoring and feedback mechanisms during construction, and the multi-process collaborative operation system is incomplete. Therefore, traditional building tilt correction techniques suffer from limitations such as a single correction method, poor correction effect, long processing time, inability to completely solve building tilting problems, and even secondary settlement issues. Furthermore, traditional methods are difficult to adapt to complex geological conditions and do not adequately improve the overall structural durability, easily leading to re-tilting after correction. Summary of the Invention

[0004] To address the problems of existing technologies, this invention proposes an intelligent correction system and method that integrates differential soil removal, pressurization, and grouting. The purpose of this invention and the solution to its technical problems are achieved through the following technical solutions.

[0005] According to the present invention, an intelligent correction system for differential soil removal, pressurization, and grouting linkage is proposed, comprising an intelligent control center and a soil removal subsystem, a pressurization subsystem, a multi-point grouting subsystem, and a monitoring subsystem that are communicatively connected to the intelligent control center; the soil removal subsystem includes a spiral soil removal device and an earth pressure monitoring sensor for controlled soil removal on the settlement side; the pressurization subsystem includes a hydraulic anchor pressurization device, a tensioning device, and a pressure control device; the grouting subsystem includes an intelligent grouting pump, a grouting pipe, and a grout storage tank; and the monitoring subsystem includes an tilt sensor, a displacement sensor, an earth pressure sensor, and a ground-penetrating radar.

[0006] Furthermore, the spiral soil-removing device includes a fixed frame and a soil-removing mechanism, with a movable connection between the soil-removing mechanism and the fixed frame to allow the spiral soil-removing device to tilt for soil removal.

[0007] Furthermore, the intelligent control center includes a data processing unit, a control algorithm module, and a user interface.

[0008] Furthermore, the prestressed anchor rods in the hydraulic anchor rod pressurization device are vertically installed around the excavation area, with their bottom ends anchored in deep stable soil; the tensioning device is installed on the reaction support to apply a controllable vertical downward tension force to the top of the prestressed anchor rod; and the pressure sensor is used to monitor the tension force value in real time.

[0009] A smart correction method that integrates differential soil removal, pressurization, and grouting includes the following steps: S1 uses ground-penetrating radar and sensor networks for intelligent exploration, and constructs a three-dimensional digital twin model that includes geological information and current deformation status. S2, Based on the aforementioned three-dimensional digital twin model, determine the coordinated construction scheme of differential soil removal, pressurization, and grouting; S3, start the soil removal subsystem on the side with smaller settlement to carry out differential and controllable soil removal, and at the same time start the pressurization subsystem to apply controllable downward pressure through anchor tensioning, so as to promote the settlement of the foundation on that side in a coordinated manner; S4. The grouting subsystem is activated on the side with greater settlement to inject special composite materials. Based on monitoring data, the grouting parameters are adjusted in real time to achieve precise lifting of the foundation on that side. S5, the intelligent control center receives feedback data from the monitoring subsystem in real time, and dynamically adjusts the process parameters of soil removal, pressurization and grouting in S3 and S4 through predictive control algorithms to form closed-loop control until the building tilt rate is restored to the target range. S6 performs effect evaluation and long-term monitoring, and generates digital reports on corrective engineering.

[0010] In step S3, during differential soil removal, a spiral soil removal device is installed under the foundation of the building on the side with smaller settlement, and the soil removal area is 1 / 5 to 1 / 3 of the foundation area.

[0011] In step S3, a hydraulic pressurization device is installed on the side of the building foundation with smaller settlement. The anchor bolts are evenly distributed, and the total pressure value of the anchor bolts is 1 / 3 to 2 / 3 of the building load. Each time the anchor bolt pressurization load is greater than 10% of the total anchor bolt pressure value.

[0012] In step S4, grouting holes are arranged in a quincunx pattern at intervals of 0.75-1.5m, according to the settlement of the building foundation.

[0013] In step S4, the depth of the grouting hole is determined according to the geological conditions. The hole depth should penetrate into the bearing layer by no less than 2m. After grouting, the building foundation is reinforced and a reinforcement curtain is formed.

[0014] In summary, the present invention has the following advantages: Through real-time processing of multi-source data and feedback from high-precision sensors by the intelligent control center, millimeter-level precise control of building lifting or settlement can be achieved, resulting in high correction accuracy. The settlement (soil removal + pressurization) and lifting (grouting) processes are carried out simultaneously, forming an efficient two-way adjustment. This eliminates the idle time in traditional processes where one side of the work is completed before proceeding to the next step, resulting in high correction efficiency and a significantly shortened construction cycle. The system continuously monitors the building's status, avoiding the secondary accident risks that may occur in traditional correction processes, such as sudden settlement, aggravated structural cracking, or excessive lifting. The construction process is smooth, controllable, and predictable, improving safety and reliability.

[0015] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0016] Figure 1 This is a schematic diagram illustrating the system structure and working principle of the present invention. Detailed Implementation

[0017] The technical solution of the present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0018] Please see Figure 1 A smart correction system that integrates differential soil removal, pressurization, and grouting includes an intelligent control center and a soil removal subsystem, a pressurization subsystem, a multi-point grouting subsystem, and a monitoring subsystem that are connected to the intelligent control center.

[0019] The soil removal subsystem includes a spiral soil removal device and an earth pressure monitoring sensor, used for controlled soil removal on the settlement side. Specifically, a miniature spiral soil removal machine (e.g., a Luoyang shovel soil removal machine) can be used in conjunction with a vacuum negative pressure suction integrated device. At the same time, the drill bit has a built-in sensor to detect changes in soil resistance ahead. The suction device can automatically adjust the negative pressure intensity according to the soil viscosity to ensure smooth soil removal without pipe blockage. This achieves precise soil removal, not only controlling the amount of soil removed, but also indirectly judging the soil properties through changes in resistance, providing rich data for the system. Meanwhile, the spiral soil removal device includes a fixed frame and a soil removal mechanism. The soil removal mechanism and the fixed frame are connected to allow the spiral soil removal device to be tilted for soil removal.

[0020] The pressurization subsystem includes a hydraulic anchor pressurization device, a tensioning device, and pressure control equipment. Specifically, the prestressed anchors in the hydraulic anchor pressurization device are vertically installed around the excavation area, with their bottom ends anchored in deep, stable soil. A clustered synchronous tensioning device is used, with hydraulic jacks at the top of each anchor interconnected via hydraulic servo valve groups, all centrally controlled to achieve synchronous, group, or sequential pressurization of all anchors. The tensioning device, installed on the reaction support, applies a controllable downward vertical tension force to the top of the prestressed anchors. Pressure sensors monitor the tension force value in real time, enabling precise reshaping of the stress field on the settlement side of the foundation. This simulates a more natural settlement process, avoiding damage to the foundation slab due to localized stress concentration, and significantly improving the safety and uniformity of the settlement process.

[0021] The grouting subsystem includes an intelligent grouting pump, grouting pipes, and a grout storage tank. Specifically, a dual-pipe micro-disturbance grouting technology can be adopted. The outer pipe is a protective sleeve, and the inner pipe is a grouting pipe with a mixing nozzle and pressure sensor at the front end. The two grouts, A and B, are mixed only at the nozzle and then sprayed out instantly, greatly reducing the risk of pipe blockage. This achieves extremely high-precision grouting control, so that the grout solidifies instantly at the designated location, forming a "root-like" or "vein-like" solidified body. The lifting force is transmitted directly and efficiently, avoiding the disturbance of the original soil caused by the disorderly diffusion of the grout.

[0022] The monitoring subsystem includes tilt sensors, displacement sensors, earth pressure sensors, ground-penetrating radar, and a level, thus constructing a three-dimensional monitoring network. This forms a digital mapping of the entire lifecycle of the object to be corrected, providing massive, multi-dimensional, real-time, high-frequency data. This ensures that the intelligent control center's decisions are based on an incredibly solid data foundation, achieving transparent construction.

[0023] The intelligent control center includes a data processing unit, a control algorithm module, and a user interface, which are used for data processing and control of the entire construction process, thereby enabling real-time regulation.

[0024] A smart correction method that integrates differential soil removal, pressurization, and grouting includes the following steps: S1 uses ground-penetrating radar and sensor networks for intelligent surveying, comprehensively scans the subsidence area, constructs a three-dimensional digital twin model containing geological information and the current deformation state, accurately locates the root cause of the problem, and determines the design of differential excavation, pressurization, and grouting schemes.

[0025] S2. Based on the above three-dimensional digital twin model, a coordinated construction scheme for differential soil removal, pressurization, and grouting is determined.

[0026] S3. On the side with less settlement, activate the soil removal subsystem for differential controlled soil removal. Specifically, micro-soil removal holes (100-300mm in diameter) are arranged on the side of the building with less settlement. Controlled soil removal is carried out using micro-soil removal equipment, with the soil removal area being 1 / 5-1 / 3 of the foundation area. This gradually reduces the supporting area of ​​the foundation on that side, causing the foundation stress to redistribute. Simultaneously, activate the pressurization subsystem to apply controllable downward pressure through anchor bolt tensioning, synergistically promoting foundation settlement on that side. Specifically, install a hydraulic pressurization device on the foundation on the side of the building foundation with less settlement. Anchor bolts are evenly distributed, with the lower end of the anchor bolts anchored to the bottom of the vertical hole, and the other end connected to the tensioning device. The applied pressure is controlled through the tensioning device to ensure that the building settles slowly and evenly. The total pressure value of the anchor bolts is 1 / 3-2 / 3 of the building load, and each anchor bolt pressurization load does not exceed 10% of the total anchor bolt pressure value.

[0027] S4. The grouting subsystem is activated on the side with greater settlement. Specifically, micro-hole grouting technology is adopted, with grouting hole diameters of 38-50mm. The grouting holes are arranged in a quincunx pattern at intervals of 0.75-1.5m according to the settlement of the building foundation. At the same time, the grouting hole depth is determined according to the stratum conditions. The hole depth should penetrate into the bearing layer by no less than 2m. After grouting, the building foundation is reinforced and a reinforcement curtain is formed. Then, special composite materials are injected, and the grouting parameters are adjusted in real time based on monitoring data to achieve precise lifting of the foundation on that side.

[0028] In S5, the intelligent control center receives feedback data (tilt, settlement, stress, etc.) from the monitoring subsystem in real time. Through predictive control algorithms, it dynamically adjusts the process parameters of soil removal, pressurization, and grouting in S3 and S4 to form a closed-loop control. It adjusts the soil removal, pressurization, and grouting parameters in real time to ensure that the correction process is precise and controllable until the building tilt rate is restored to the target range.

[0029] S6. After the correction is completed, the effect is verified to ensure that the verticality of the building is restored to the standard value; then long-term monitoring is carried out to ensure the stability of the building.

[0030] The above description is merely a preferred embodiment of the present invention. Any simple modifications, equivalent changes, and alterations made by those skilled in the art to the above embodiments without departing from the scope of the present invention and based on the technical essence of the present invention shall still fall within the scope of the present invention.

Claims

1. An intelligent deviation correction system that integrates differential soil removal, pressurization, and grouting, characterized in that: It includes an intelligent control center and a soil removal subsystem, a pressurization subsystem, a multi-point grouting subsystem, and a monitoring subsystem that communicate with the intelligent control center; the soil removal subsystem includes a spiral soil removal device and an earth pressure monitoring sensor, which are used for controlled soil removal on the settlement side; The pressurization subsystem includes a hydraulic anchor pressurization device, a tensioning device, and pressure control equipment; The grouting subsystem includes an intelligent grouting pump, grouting pipes, and a grout storage tank; The monitoring subsystem includes tilt sensors, displacement sensors, earth pressure sensors, and ground-penetrating radar.

2. The intelligent deviation correction system for differential soil removal, pressurization, and grouting linkage as described in claim 1, characterized in that: The spiral soil-removing device includes a fixed frame and a soil-removing mechanism. The soil-removing mechanism and the fixed frame are connected to allow the spiral soil-removing device to tilt for soil removal.

3. The intelligent deviation correction system for differential soil removal, pressurization, and grouting linkage as described in claim 1, characterized in that: The intelligent control center includes a data processing unit, a control algorithm module, and a user interface.

4. The intelligent deviation correction system for differential soil removal, pressurization, and grouting linkage as described in claim 1, characterized in that: The prestressed anchor rods in the hydraulic anchor rod pressurization device are vertically installed around the excavation area, with their bottom ends anchored in deep stable soil; the tensioning device is installed on the reaction support to apply a controllable vertical downward tension force to the top of the prestressed anchor rod; and the pressure sensor is used to monitor the tension force value in real time.

5. A smart correction method that integrates differential soil removal, pressurization, and grouting, characterized in that, Includes the following steps: S1 uses ground-penetrating radar and sensor networks for intelligent exploration, and constructs a three-dimensional digital twin model that includes geological information and current deformation status. S2, Based on the aforementioned three-dimensional digital twin model, determine the coordinated construction scheme of differential soil removal, pressurization, and grouting; S3, start the soil removal subsystem on the side with smaller settlement to carry out differential and controllable soil removal, and at the same time start the pressurization subsystem to apply controllable downward pressure through anchor tensioning, so as to promote the settlement of the foundation on that side in a coordinated manner; S4. The grouting subsystem is activated on the side with greater settlement to inject special composite materials. Based on monitoring data, the grouting parameters are adjusted in real time to achieve precise lifting of the foundation on that side. S5, the intelligent control center receives feedback data from the monitoring subsystem in real time, and dynamically adjusts the process parameters of soil removal, pressurization and grouting in S3 and S4 through predictive control algorithms to form closed-loop control until the building tilt rate is restored to the target range. S6 performs effect evaluation and long-term monitoring, and generates digital reports on corrective engineering.

6. The intelligent correction method for differential soil removal, pressurization, and grouting linkage according to claim 5, characterized in that: In step S3, during differential soil removal, a spiral soil removal device is installed under the foundation of the building on the side with smaller settlement, and the soil removal area is 1 / 5 to 1 / 3 of the foundation area.

7. The intelligent correction method for differential soil removal, pressurization, and grouting linkage according to claim 5, characterized in that: In step S3, a hydraulic pressurization device is installed on the side of the building foundation with smaller settlement. The anchor bolts are evenly distributed, and the total pressure value of the anchor bolts is 1 / 3 to 2 / 3 of the building load. Each time the anchor bolt pressurization load is greater than 10% of the total anchor bolt pressure value.

8. The intelligent correction method for differential soil removal, pressurization, and grouting linkage according to claim 5, characterized in that: In step S4, grouting holes are arranged in a quincunx pattern at intervals of 0.75-1.5m, according to the settlement of the building foundation.

9. The intelligent correction method for differential soil removal, pressurization, and grouting linkage according to claim 5, characterized in that: In step S4, the depth of the grouting hole is determined according to the geological conditions. The hole depth should penetrate into the bearing layer by no less than 2m. After grouting, the building foundation is reinforced and a reinforcement curtain is formed.

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