Adjustable intelligent soft soil grouting method and grouting system

Abstract

The invention discloses an adjustable intelligent soft soil grouting method and a grouting system.The grouting method comprises the steps that firstly, construction preparation is conducted, void ratio reference values under different soil texture conditions and optimal grouting parameters matched with the void ratio reference values are input into a grouting proportion control system, a sensor and a camera are installed in a grouting pipe, and the grouting pipe is connected with the sensor and the camera; during construction, the grouting pipe is inserted into a to-be-reinforced soil body, data are collected through the sensor and the camera, and collected pore image data are processed and calculated through software to obtain the void ratio; then searching the parameter table to obtain an optimal grouting parameter, carrying out slurry automatic proportioning operation according to the optimal grouting parameter, controlling the pump quantity of a grouting pump after the slurry automatic proportioning operation is completed, and starting one-time grouting circulation operation; and after each grouting cycle is completed, the construction process is repeated until the void ratio and the grouting amount are marked, and grouting operation is ended. According to the intelligent grouting system, grouting is more accurate and more intelligent, and the adaptability is high.

Description

Technical Field

[0001] The present invention relates to the field of engineering construction, and in particular to an adjustable intelligent soft soil grouting method and a grouting system. Background Art

[0002] Grouting technology is commonly used in construction projects such as building, transportation, and water conservancy projects for foundation reinforcement, waterproofing, and tunnel surrounding rock stabilization. Currently, traditional grouting methods rely primarily on the experience of construction personnel or pre-set fixed parameters to adjust the grouting mix. For example, in sandy soil grouting reinforcement, the water-cement ratio is often set based on experience, without fully considering the impact of differences in sand porosity and moisture content on grout diffusion. In clay soil grouting, fixed parameters can easily lead to excessive grouting pressure, resulting in grout infiltration problems.

[0003] These traditional methods have obvious defects: first, they lack the ability to dynamically detect and respond to geological conditions at the construction site in real time, making it difficult to adapt to complex and changing geological environments; second, manual experience judgment is highly subjective, and the grouting ratio accuracy is low, which can easily lead to problems such as slurry waste and poor reinforcement effect. Summary of the Invention

[0004] The purpose of the present invention is to provide an adjustable intelligent soft soil grouting method and grouting system to solve the obvious defects of the traditional methods mentioned in the above background technology, so that grouting is more accurate, more intelligent and has strong adaptability.

[0005] In order to achieve the above technical effects, the technical solution adopted by the present invention is: An adjustable intelligent soft soil grouting method, characterized by comprising the following steps: S1. Construction Preparation: Enter relevant parameters into the grouting mix control system to form a parameter table. The relevant parameters include reference values for porosity under different soil conditions and their matching optimal grouting parameters. The grouting parameters include slurry penetration parameters and water-cement ratio parameters. S2. Data Collection and Processing: Based on the designed grouting point locations and depths, the grouting pipe is inserted into the soil to be reinforced. Water content data and pore image data are collected, and the void ratio is calculated based on the pore image data. S3. Obtaining the optimal grouting parameters: The grouting ratio control system searches the parameter table based on the calculated porosity ratio to obtain the optimal grouting parameters that match the porosity ratio; S4. Automatic batching system batching operation: Based on the obtained optimal grouting parameters, the automatic batching system performs slurry batching operation; S5. Start grouting operation: The grouting equipment automatically adjusts the grouting pump output and starts a grouting cycle; S6. End grouting: During the grouting operation, after each grouting cycle is completed, the grouting ratio control system controls the sensor and camera to re-collect data, and sends an end grouting instruction when the porosity ratio reaches the standard value and the grouting volume is sufficient, and the grouting equipment ends the grouting operation.

[0006] Furthermore, the construction preparation in step S1 also includes selecting a suitable type of equipment and assembling and debugging it, and also includes installing sensors and cameras at the front end of the grouting pipe, and debugging the installed sensors and cameras.

[0007] Furthermore, when the equipment is assembled, a lighting lamp is installed at the front end of the grouting pipe. The lighting lamp is an LED lamp to assist the camera in obtaining clear images.

[0008] Furthermore, the method for obtaining the porosity ratio in step S2 is to first process the pore image data collected by the camera through image analysis software and calculate the porosity, and then the data calculation module calculates the porosity ratio through a formula.

[0009] An adjustable intelligent soft soil grouting system includes an automatic batching system, grouting equipment and a grouting ratio control system; the grouting ratio control system is connected to the automatic batching system and the grouting equipment respectively, and is used to control the automatic batching system to prepare corresponding slurry according to the received optimal grouting parameters and to control the grouting equipment to perform grouting operations.

[0010] Furthermore, the automatic batching system includes several raw material silos, water tanks, slurry storage tanks, mixing equipment, conveying equipment, and several measuring instruments; the raw material silos include cement silos, fly ash silos and admixture (such as water reducer, etc.) silos; the measuring instruments are used to measure the amount of raw materials and water, and the measuring instruments include multiple electronic weighing scales and liquid level gauges.

[0011] Furthermore, the grouting equipment includes a grouting pipe; the grouting pipe is provided with a detection section, a grouting section and a slurry feeding section from front to back, a sensor is installed inside the front end of the detection section, and a wireless transmission module, a camera, a lighting lamp and a power supply module are installed inside the rear end of the detection section, the power supply module is respectively connected to the sensor, camera and lighting lamp, and the wireless transmission module is used to realize the connection between the data detection module and the sensor and camera.

[0012] Furthermore, the grouting equipment also includes a grouting pump; one end of the grouting pump is connected to the slurry storage tank, and the other end of the grouting pump is connected to the grouting port of the grouting pipe through a grouting valve, and a pressure gauge is provided on the grouting pump.

[0013] Furthermore, the grouting ratio control system is provided with a data detection module, a data calculation module and a grouting ratio adjustment module. The grouting ratio control system is connected to the sensor and the camera through the data detection module, and is respectively connected to various measuring instruments and pressure gauges through the grouting ratio adjustment module.

[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. Accuracy: Through real-time detection and precise calculation, the grouting ratio is automatically adjusted according to the actual geological parameters. Compared with the traditional empirical method, the grouting ratio accuracy is improved, effectively avoiding slurry waste and insufficient reinforcement.

[0015] 2. Intelligence: It realizes the automation of the entire process from data detection and calculation to grouting ratio adjustment, reduces manual intervention, reduces human errors, and improves construction efficiency.

[0016] 3. Strong adaptability: The grouting parameters can be dynamically adjusted according to the changes in porosity and water content of different strata. It is suitable for a variety of complex geological conditions such as sandy soil and clay soil, and broadens the application scope of grouting technology.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail with reference to the accompanying drawings and embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is an implementation flow chart of the grouting method of the present invention.

[0019] Figure 2 It is a structural schematic diagram of the grouting system of the present invention.

[0020] Figure 3 It is a schematic diagram of the grouting pipe structure of the present invention.

[0021] Description of reference numerals: 1. Grouting ratio control system, 11. Data detection module, 12. Data calculation module, 13. Grouting ratio adjustment module, 2. Automatic batching system, 3. Grouting equipment, 4. Grouting pipe, 4a. Testing section, 4b. Grouting section, 4c. Slurry feeding section, 41. FDR sensor, 42. Wireless transmission module, 43. Power supply module, 44. Camera, 45. Lighting, 46. Grouting hole, 47. Grouting valve. DETAILED DESCRIPTION Example 1

[0022] An adjustable intelligent soft soil grouting method, such as Figure 1 As shown, the method includes the following steps: S1. Construction Preparation: First, select appropriate equipment types and assemble them to form a grouting system. Simultaneously, enter relevant parameters into the assembled grouting mix control system to create a parameter table. These parameters include reference porosity values for different soft soil types (such as sand and clay) (Note: the reference porosity values in the parameter table represent multiple continuous intervals) and the optimal grouting parameters for each porosity reference value. Grouting parameters include slurry penetration, water-cement ratio, and grouting pressure. Furthermore, during equipment assembly, sensors, cameras, and lighting must be installed inside the front end of the grouting pipe before assembly. After the grouting system is assembled, the entire grouting system (including installed sensors and cameras) must be debugged. Preferably, the sensor is an FDR (frequency domain reflectometry) sensor to collect real-time soil moisture data; the camera is a high-definition camera to capture images of the soil pores in the grouting area; and the lighting is an LED to assist the camera in obtaining clear images. The grouting proportion control system in this embodiment is a computer control system with industrial computers as hardware platforms and has data acquisition, analysis, decision-making and control functions, which can be realized.

[0023] S2. Data acquisition and processing: Before the actual grouting of the project, the grouting pipe is inserted into the soil to be reinforced according to the designed location and depth of the grouting point, and the moisture content data and pore image data are collected. The porosity ratio is calculated based on the pore image data processing. Specifically, the grouting ratio control system sends instructions through the data detection module to start the FDR sensor and camera, and collects the moisture content and pore image data of the set position of the soil in real time. The FDR sensor transmits the moisture content data to the grouting ratio control system data calculation module through the wireless data transmission module, and the camera transmits the captured image data to the grouting ratio control system through the wireless data transmission module. The porosity is calculated after processing by the image analysis software of the grouting ratio control system, and then the porosity data is transmitted to the data calculation module; the data calculation module calculates the porosity based on the received porosity data using a formula, and transmits the result to the grouting ratio control system.

[0024] S3. Obtaining the optimal grouting parameters: The grouting ratio control system searches the pre-entered parameter table for the corresponding soil conditions based on the calculated porosity ratio, obtains the optimal grouting parameters that match the corresponding porosity ratio under the soil conditions, and sends the optimal grouting parameters to the automatic batching system. Preferably, considering the influence of soil moisture content on grouting parameters (when the soil moisture content is high, the water-cement ratio should be appropriately reduced and the slurry concentration increased; when the moisture content is low, the water-cement ratio should be appropriately increased and the slurry concentration reduced), the grouting ratio control system recalculates the water-cement ratio parameters in the optimal grouting parameters directly obtained from the parameter table through the built-in algorithm of the data calculation module to obtain the optimized new water-cement ratio. The grouting ratio control system replaces the water-cement ratio in the optimal grouting parameters obtained in the original parameter table with the new water-cement ratio and sends it to the automatic batching system.

[0025] S4. Batching operation of automatic batching system: The automatic batching system accurately adjusts the amount of cement, water and admixtures according to the optimized optimal grouting parameters, controls the water-cement ratio, and realizes precise adjustment of the grouting ratio to automatically perform slurry batching operations.

[0026] S5. Grouting begins: The grouting equipment control unit automatically adjusts the grouting pump pressure and flow rate based on the penetration rate and pressure parameters through the grouting module, starting a grouting cycle. The grouting fluid, under pressure, penetrates the soil pores through the grouting pipe. During this process, the system also monitors the grouting pressure, flow rate, and cumulative grouting volume in real time to ensure that the grouting parameters meet the set values.

[0027] S6. End grouting: During the grouting operation, after each grouting cycle is completed, the grouting ratio control system controls the sensor and camera to re-collect data, and sends a grouting end instruction when the porosity ratio reaches the standard value and the grouting volume is sufficient, and the grouting equipment ends the grouting operation. Specifically, after each grouting cycle is completed, the grouting equipment will pause grouting, restart the sensor and camera, and repeat step S2 data collection and processing. The grouting ratio control system determines whether to continue grouting based on the latest calculated porosity ratio data and cumulative grouting volume data; when the porosity ratio reaches the target value and the grouting volume is sufficient, the grouting ratio control system sends an instruction to end the grouting operation; otherwise, steps S2-S5 are repeated.

[0028] The present invention realizes real-time dynamic detection and response to the geological conditions at the construction site by installing an FDR sensor and a high-definition camera at the front end of the grouting pipe. It can dynamically adjust the grouting parameters according to the changes in the porosity and water content of different strata. It is applicable to a variety of complex geological conditions such as sandy soil and clay soil, and broadens the application range of grouting technology. A data calculation module is used to calculate the porosity ratio based on the detected porosity, and the grouting ratio control system automatically matches the optimal grouting parameters, thereby reducing manual intervention, reducing human errors, improving construction efficiency, effectively avoiding slurry waste and insufficient reinforcement problems, and also reducing slurry waste. By continuously repeating detection, calculation and ratio adjustment during the grouting operation, dynamic and precise control of the grouting process is achieved, and the grouting parameters are automatically adjusted according to the real-time detection of soil parameters, making the grouting process more scientific, standardized and intelligent. Example 2

[0029] An adjustable intelligent soft soil grouting system, such as Figure 2 、 3 As shown, the grouting system includes an automatic batching system 2, a grouting device 3 and a grouting ratio control system 1. The grouting ratio control system 1 is connected to the automatic batching system 2 and the grouting device 3, respectively, and is used to control the automatic batching system 2 to prepare the corresponding slurry according to the received optimal grouting parameters and to control the grouting device 3 to perform the grouting operation. Specifically, The grouting mix ratio control system 1 is equipped with a data detection module 11, a data calculation module 12, and a grouting mix ratio adjustment module 13. The automatic batching system 2 includes several raw material silos, a water tank, a slurry storage tank, mixing equipment, conveying equipment, and several measuring instruments. The raw material silos include cement silos, fly ash silos, and admixture (such as water reducer) silos. The measuring instruments include multiple electronic weighing scales and liquid level gauges. The electronic weighing scales are used to automatically measure the amount of raw materials used in preparing the mortar slurry, and each raw material silo is equipped with at least one electronic weighing scale. The liquid level gauge is located in the water tank and is used to automatically measure the amount of water used in preparing the mortar slurry. The electronic weighing scales and liquid level gauges are connected to the grouting mix ratio control system 1 via the grouting mix ratio adjustment module 13. The automatic batching system 2 is used to prepare the mortar slurry. The connections between the raw material silos, water tanks, mixing equipment, and other components are relatively conventional and well known in the art, and will not be described in this embodiment.

[0030] The grouting equipment 3 mainly includes a grouting pipe 4 and a grouting pump. The grouting pipe 4 is provided with a detection section 4a, a grouting section 4b and a grouting section 4c from front to back. The detection section 4a is used to detect the moisture content and porosity of the soil at the designed position; an FDR sensor 41 is installed inside the front end of the detection section 4a, a wireless transmission module 42 is installed in the middle, and a camera 44, a lighting lamp 45 and a power supply module 43 are installed inside the rear end of the detection section 4a. The power supply module 43 is connected to the FDR sensor 41, the camera 44 and the lighting lamp 45 respectively, and is used to power the FDR sensor 41, the camera 44 and the lighting lamp 45. The wireless transmission module 42 is used to connect the data detection module 11 with the FDR sensor 41 and the camera 44, to transmit the data detected by the FDR sensor 41 and the camera 44 to the data detection module 11, and to realize remote control of the sensor and the camera 44 by the grouting ratio control system 1. The grouting section 4b is used to implement grouting reinforcement of the soil at the designed location. Grouting holes 46 are provided on its surface. The grouting section 4c is used to introduce slurry and is equipped with a grouting inlet connected to an automatically adjustable grouting valve 47. The grouting valve 47 is connected to the grouting ratio control system 1 via the grouting ratio adjustment module 13 to control the grouting flow rate. One end of the grouting pump is connected to the slurry storage tank, and the other end of the grouting pump is connected to the grouting inlet of the grouting pipe 4 via the grouting valve 47. The grouting pump is equipped with a pressure gauge, which is connected to the grouting ratio control system 1 via the grouting ratio adjustment module 13.

[0031] The present invention is not limited to the above-mentioned specific implementation manners. For ordinary technicians in this field, various changes made based on the above-mentioned conception without creative work are all within the scope of protection of the present invention.

Claims

1. An adjustable intelligent soft soil grouting method, characterized in that: The following steps are involved: S1. Construction Preparation: Install sensors and cameras at the front end of the grouting pipe; enter relevant parameters into the grouting ratio control system to form a parameter table. The relevant parameters include reference values for porosity under different soil conditions and their matching optimal grouting parameters, including slurry penetration parameters and water-cement ratio parameters; S2. Data Collection and Processing: Based on the designed grouting point locations and depths, the grouting pipe is inserted into the soil to be reinforced. Water content data and pore image data are collected, and the void ratio is calculated based on the pore image data. S3. Obtaining the optimal grouting parameters: The grouting ratio control system searches the parameter table based on the calculated porosity ratio to obtain the optimal grouting parameters that match the porosity ratio; S4. Automatic batching system batching operation: Based on the obtained optimal grouting parameters, the automatic batching system performs slurry batching operation; S5. Start grouting operation: The grouting equipment automatically adjusts the grouting pump output and starts a grouting cycle; S6. End grouting: During the grouting operation, after each grouting cycle is completed, the grouting ratio control system controls the sensor and camera to re-collect data, and sends an end grouting instruction when the porosity ratio reaches the standard value and the grouting volume is sufficient, and the grouting equipment ends the grouting operation.

2. The adjustable intelligent soft soil grouting method according to claim 1, characterized in that: The construction preparation in step S1 also includes selecting suitable types of equipment and assembling and debugging them.

3. The adjustable intelligent soft soil grouting method according to claim 2, characterized in that: When the equipment is assembled, a lighting lamp is installed at the front end of the grouting pipe. The lighting lamp is an LED lamp to assist the camera in obtaining clear images.

4. The adjustable intelligent soft soil grouting method according to claim 1, characterized in that: The method for obtaining the porosity ratio in step S2 is to first process the pore image data collected by the camera through image analysis software and calculate the porosity, and then the data calculation module calculates the porosity ratio through a formula.

5. An adjustable intelligent soft soil grouting system for implementing the grouting method according to claim 1, characterized in that: It includes an automatic batching system, grouting equipment and a grouting ratio control system; the grouting ratio control system is connected to the automatic batching system and the grouting equipment respectively, and is used to control the automatic batching system to prepare the corresponding slurry according to the received optimal grouting parameters and to control the grouting equipment to perform grouting operations.

6. The grouting system according to claim 5, characterized in that: The automatic batching system includes several raw material silos, water tanks, slurry storage tanks, mixing equipment, conveying equipment, and several measuring instruments; the raw material silos include cement silos, fly ash silos and admixture silos; the measuring instruments are used to measure the amount of raw materials and water, and the measuring instruments include multiple electronic weighing scales and liquid level gauges.

7. The grouting system according to claim 5, characterized in that: The grouting equipment includes a grouting pipe; the grouting pipe is provided with a detection section, a grouting section and a slurry feeding section from front to back, a sensor is installed inside the front end of the detection section, and a wireless transmission module, a camera, a lighting lamp and a power supply module are installed inside the rear end of the detection section. The power supply module is connected to the sensor, camera and lighting lamp respectively, and the wireless transmission module is used to realize the connection between the data detection module and the sensor and camera.

8. The grouting system according to claim 6, characterized in that: The grouting equipment also includes a grouting pump; one end of the grouting pump is connected to the slurry storage tank, and the other end of the grouting pump is connected to the grouting port of the grouting pipe through a grouting valve, and a pressure gauge is provided on the grouting pump.

9. A grouting system according to claim 5, characterized in that: The grouting ratio control system is provided with a data detection module, a data calculation module and a grouting ratio adjustment module. The grouting ratio control system is connected to the sensor and the camera through the data detection module, and is respectively connected to various measuring instruments and pressure gauges through the grouting ratio adjustment module.

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