Grouting pressure control method and device in urban underground space grouting construction process

Abstract

The invention provides a grouting pressure control method and device in the grouting construction process of an urban underground space, and relates to the technical field of pressure control. The method comprises the steps that geological conditions and soil body characteristics of a target urban underground space are obtained, and the target pressure range of grouting construction is determined; a plurality of grouting stages are divided based on the target pressure range, and a corresponding grouting adjustment model is trained; real-time grouting pressure data are obtained through monitoring of the real-time monitoring module and matched with the multiple grouting stages, and the target grouting stage is locked; on the basis of the target grouting stage, the target grouting adjustment model is activated, real-time grouting pressure data and real-time soil body characteristic data serve as input, grouting adjustment analysis is conducted, and a stage pressure control scheme is generated; and the stage pressure control scheme is executed, and grouting pressure control of the target grouting stage is carried out. The technical problem that in the prior art, the grouting pressure control effect is poor can be solved, and the technical effect of improving the grouting pressure control effect is achieved.

Description

Technical Field

[0001] This application relates to the field of pressure control technology, and in particular to a method and device for controlling grouting pressure during the grouting construction process in urban underground spaces. Background Technology

[0002] With the acceleration of urbanization, the development and utilization of underground space is becoming increasingly widespread. Projects such as subway tunnels, underground civil defense projects, underground utility tunnels, and large underground commercial spaces are playing an increasingly important role in urban construction. At the same time, the underground construction environment is complex and variable, with significant differences in soil structure. Factors such as groundwater pressure and the load of surrounding buildings have placed higher demands on construction safety.

[0003] Currently, existing grouting construction technologies largely rely on manual experience and simple pressure control methods. They typically employ fixed pressures or single pressure values ​​set according to construction specifications, lacking the ability to dynamically adapt to different geological conditions and soil properties. Furthermore, they lack real-time monitoring and intelligent feedback mechanisms for grout diffusion range, soil reaction, and changes in the underground environment during construction. This singular, static control method leads to situations where, in areas with low stratum bearing capacity or poor soil permeability, the grouting pressure may be too low, preventing the grout from effectively penetrating and forming a reinforced layer, thus affecting the reinforcement effect. Conversely, in areas with high stratum bearing capacity or limited underground space, the grouting pressure may be too high, easily causing soil fissures to expand, surface heave, and even adversely affecting surrounding buildings.

[0004] In summary, existing technologies suffer from technical problems due to the lack of dynamic adjustment and intelligent management of grouting pressure control. This results in the inability to achieve precise pressure matching under different geological conditions, uneven grout diffusion, or abnormal soil stress, which further affects the stability of underground space structures, the safety of grouting construction, and the reliability of reinforcement effects. Summary of the Invention

[0005] The purpose of this application is to provide a method and device for controlling grouting pressure during the grouting construction process in urban underground spaces, in order to solve the technical problems in the prior art where the lack of dynamic adjustment and intelligent management of grouting pressure control leads to the inability to achieve precise pressure matching under different geological conditions, uneven grout diffusion, or abnormal soil stress, which further affects the stability of underground space structures, the safety of grouting construction, and the reliability of reinforcement effects.

[0006] In view of the above problems, this application provides a method and device for controlling grouting pressure during the grouting construction process in urban underground spaces.

[0007] Firstly, this application provides a method for controlling grouting pressure during the grouting construction process in urban underground spaces. This method is implemented using a grouting pressure control device for the grouting construction process in urban underground spaces. The method includes: acquiring the geological conditions and soil characteristics of the target urban underground space; determining the target pressure range for grouting construction, where the target pressure range is a floating pressure interval; dividing the target pressure range into multiple grouting stages and training corresponding grouting adjustment models; monitoring and acquiring real-time grouting pressure data through a real-time monitoring module and matching it with the multiple grouting stages to lock in the target grouting stage; activating the target grouting adjustment model based on the target grouting stage, using the real-time grouting pressure data and real-time soil characteristic data as inputs to perform grouting adjustment analysis and generate a stage pressure control scheme; and executing the stage pressure control scheme to control the grouting pressure of the target grouting stage.

[0008] Preferably, the grouting pressure control method in the grouting construction process of urban underground space further includes: conducting geological exploration of the target urban underground space to obtain rock and soil geological data; determining the upper limit and lower limit of grouting pressure based on the rock and soil geological data and the requirements of the grouting task; obtaining surrounding environmental data, fine-tuning the upper limit and lower limit of grouting pressure, and determining the target pressure range for grouting construction.

[0009] Preferably, the grouting pressure control method in the grouting construction process of the urban underground space further includes: assessing the bearing capacity of the stratum and the diffusion capacity of the grout through the rock and soil geological data, and determining the upper limit of the grouting pressure; and determining the lower limit of the grouting pressure according to the grouting task requirements, combined with the flow characteristics of the grouting liquid and the bearing capacity of the stratum.

[0010] Preferably, the grouting pressure control method for the grouting construction process in urban underground space further includes: performing interval clustering analysis based on the pressure fluctuation range of the target pressure range to divide the grouting construction process into multiple grouting stages, with each grouting stage corresponding to a pressure sub-range; and training a corresponding grouting adjustment model for each grouting stage.

[0011] Preferably, the grouting pressure control method for the grouting construction process in urban underground space further includes: the multiple grouting stages include a low-pressure grouting stage, a medium-pressure grouting stage, and a high-pressure grouting stage; for the low-pressure grouting stage, the medium-pressure grouting stage, and the high-pressure grouting stage, historical construction data and historical soil reaction data are extracted respectively; based on the historical construction data and soil reaction data, machine learning is used for training to obtain a low-pressure grouting adjustment model, a medium-pressure grouting adjustment model, and a high-pressure grouting adjustment model.

[0012] Preferably, the grouting pressure control method in the grouting construction process of urban underground space further includes: continuously monitoring the pressure and flow rate during the grouting process through a real-time monitoring module to obtain real-time grouting pressure data; comparing the real-time grouting pressure data with preset pressure sub-ranges of multiple grouting stages; and determining the target grouting stage of the current grouting construction based on the comparison results.

[0013] Preferably, the grouting pressure control method in the grouting construction process of urban underground space further includes: activating the target grouting adjustment model corresponding to the target grouting stage; inputting real-time grouting pressure data and real-time soil characteristic data into the target grouting adjustment model for adjustment analysis, and outputting grouting pressure adjustment instructions; generating a stage pressure control scheme according to the grouting pressure adjustment instructions, wherein the stage pressure control scheme includes the adjustment target value of grouting pressure, the adjustment speed, and the adjustment time.

[0014] Secondly, this application also provides a grouting pressure control device for the grouting construction process of urban underground space, used to execute the grouting pressure control method for the grouting construction process of urban underground space as described in the first aspect, including: a target pressure range determination module, used to acquire the geological conditions and soil characteristics of the target urban underground space, and determine the target pressure range for grouting construction, wherein the target pressure range is a floating pressure interval; a grouting adjustment model training module, used to divide multiple grouting stages based on the target pressure range, and train corresponding grouting adjustment models; a target grouting stage locking module, used to acquire real-time grouting pressure data through a real-time monitoring module, and match it with the multiple grouting stages to lock the target grouting stage; a stage pressure control scheme generation module, used to activate the target grouting adjustment model based on the target grouting stage, and perform grouting adjustment analysis with the real-time grouting pressure data and real-time soil characteristic data as input, to generate a stage pressure control scheme; and a grouting pressure control module, used to execute the stage pressure control scheme to control the grouting pressure of the target grouting stage.

[0015] The technical solution provided in this application has at least the following technical effects or advantages: by achieving the technical goal of dynamically adjusting the grouting pressure according to the real-time grouting pressure and soil characteristics, it achieves the technical effects of precise pressure control, uniform grout diffusion, significant improvement in the stratum reinforcement effect, and comprehensive improvement in construction safety and efficiency during the grouting construction process.

[0016] The above description is merely an overview of the technical solution of this application. To enable a clearer understanding of the technical means of this application and to facilitate its implementation according to the description, and to make the above and other objects, features, and advantages of this application more apparent, specific embodiments of this application are described below. It should be understood that the content described in this section is not intended to identify key or important features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent through the following description. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely exemplary. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0018] Figure 1 This is a flowchart illustrating the grouting pressure control method for the grouting construction process in urban underground space as described in this application.

[0019] Figure 2 This is a schematic diagram of the grouting pressure control device used in the grouting construction process of urban underground space in this application.

[0020] Explanation of reference numerals in the attached diagram: Target pressure range determination module 1, grouting adjustment model training module 2, target grouting stage locking module 3, stage pressure control scheme generation module 4, grouting pressure control module 5. Detailed Implementation

[0021] This application provides a grouting pressure control method and device for urban underground space grouting construction, solving the technical problems in existing technologies where the lack of dynamic adjustment and intelligent management of grouting pressure control leads to the inability to achieve precise pressure matching under different geological conditions, uneven grout diffusion, or abnormal soil stress, further affecting the stability of underground space structures, the safety of grouting construction, and the reliability of reinforcement effects. It achieves the technical goal of dynamically adjusting grouting pressure based on real-time grouting pressure and soil characteristics, resulting in precise pressure control, uniform grout diffusion, significantly improved stratum reinforcement effects, and comprehensive improvements in construction safety and efficiency during grouting construction.

[0022] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. It should be understood that this application is not limited to the exemplary embodiments described herein. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. It should also be noted that, for ease of description, only the parts related to this application are shown in the accompanying drawings, not all of them.

[0023] Example 1, please refer to the appendix. Figure 1 This application provides a grouting pressure control method for the grouting construction process in urban underground spaces, and a grouting pressure control device applied to the grouting construction process in urban underground spaces, specifically including the following steps: S1: Obtain the geological conditions and soil characteristics of the underground space of the target city, and determine the target pressure range for grouting construction. The target pressure range is a floating pressure interval.

[0024] Furthermore, this application also includes: conducting geological exploration of the underground space of the target city to obtain rock and soil geological data; determining the upper limit and lower limit of grouting pressure based on the rock and soil geological data and in conjunction with the requirements of the grouting task; obtaining surrounding environmental data, fine-tuning the upper limit and lower limit of grouting pressure, and determining the target pressure range for grouting construction.

[0025] Furthermore, this application also includes: assessing the bearing capacity of the strata and the diffusion capacity of the grout using the aforementioned rock and soil geological data, and determining the upper limit of the grouting pressure; and determining the lower limit of the grouting pressure based on the grouting task requirements, combined with the flow characteristics of the grouting liquid and the bearing capacity of the strata.

[0026] Specifically, geological exploration is conducted on the underground space of the target city to obtain rock and soil geological data. Geological exploration refers to a comprehensive investigation of the underground rock structure, soil layer distribution, water content, and bearing capacity through drilling, sampling, testing, and other methods. Rock and soil geological data includes parameters such as the type of rock and soil layers, particle size, porosity, and permeability coefficient.

[0027] By using geotechnical data, the bearing capacity of the strata and the diffusion capacity of the grout are assessed to determine the upper limit of the grouting pressure. The bearing capacity of the strata refers to the external pressure that the soil or rock strata can withstand without significant deformation or damage. The diffusion capacity of the grout indicates the range and speed at which the grout diffuses through pores or fissures in the soil. The determination of the upper limit is to ensure that the grout can penetrate and diffuse, while avoiding excessive pressure that could cause strata cracking or surface heave. For example, in sandy soils with weak bearing capacity, if the grouting pressure exceeds 0.6 MPa, it may lead to the destruction of the sand layer. Therefore, the upper limit needs to be controlled below this value.

[0028] Based on the grouting task requirements, combined with the flow characteristics of the grouting fluid and the bearing capacity of the stratum, the lower limit of the grouting pressure is determined. The grouting task requirements include water stopping, foundation reinforcement, or filling voids. Different tasks determine the minimum penetration effect that the grout must achieve. The flow characteristics of the grouting fluid refer to its viscosity, setting time, and permeability, which determine whether the grout can smoothly pass through the pores or cracks of the soil. At the same time, the bearing capacity of the stratum also plays a constraining role on the lower limit, because too low a pressure may prevent the grout from entering the soil to form a reinforced layer. For example, in silty clay, if the grouting pressure is lower than 0.2 MPa, the grout will remain at the grouting hole opening due to excessive permeability resistance, resulting in ineffective construction. Therefore, the lower limit must be set above 0.2 MPa.

[0029] By acquiring surrounding environmental data, the upper and lower limits of grouting pressure are fine-tuned to determine the target pressure range for grouting construction. Surrounding environmental data includes the distribution of underground pipelines, the type and distance of foundations of nearby buildings. For example, if there is a water supply pipeline 5 meters underground, excessively high grouting pressure may cause the pipeline to deform or even rupture. Therefore, the upper limit needs to be appropriately lowered. At the same time, if the construction area is located next to a subway line, an excessively low lower limit may not be able to form a sufficient reinforcement effect. Therefore, the lower limit needs to be appropriately increased to determine a more reasonable floating pressure range under actual engineering conditions.

[0030] The target pressure range is a floating pressure interval, which means that the range is a range in which fluctuations are allowed. Pressure changes within the floating pressure interval will not have a negative impact on construction safety and results, and can take into account the dynamic changes in soil conditions and the slight fluctuations in equipment output during construction.

[0031] S2: Divide the grouting process into multiple stages based on the target pressure range, and train the corresponding grouting adjustment model.

[0032] Furthermore, this application also includes: performing interval clustering analysis based on the pressure fluctuation range of the target pressure range to divide the grouting construction process into multiple grouting stages, with each grouting stage corresponding to a pressure sub-range; and training a corresponding grouting adjustment model for each grouting stage.

[0033] Furthermore, this application also includes: the plurality of grouting stages include a low-pressure grouting stage, a medium-pressure grouting stage, and a high-pressure grouting stage; for the low-pressure grouting stage, the medium-pressure grouting stage, and the high-pressure grouting stage respectively, historical construction data and historical soil reaction data are extracted; based on the historical construction data and soil reaction data, machine learning is used for training to obtain a low-pressure grouting adjustment model, a medium-pressure grouting adjustment model, and a high-pressure grouting adjustment model.

[0034] Specifically, based on the pressure fluctuation range within the target pressure range, interval cluster analysis is performed to divide the grouting construction process into multiple grouting stages, each corresponding to a pressure sub-range. The target pressure range refers to a reasonable pressure range obtained after adjustments based on geological exploration, construction task requirements, and environmental factors. The pressure fluctuation range refers to the amplitude of pressure fluctuation within this range. Interval cluster analysis is a data processing method that groups pressure values ​​within an interval to identify intervals with similar characteristics, thereby dividing the grouting construction process into several stages. Each stage has a relatively stable pressure sub-range. For example, within the target range of 0.25 MPa to 0.45 MPa, cluster analysis can be used to divide it into a low-pressure stage (0.25 MPa to 0.3 MPa), a medium-pressure stage (0.3 MPa to 0.38 MPa), and a high-pressure stage (0.38 MPa to 0.45 MPa), which helps to more precisely control the grouting process.

[0035] The grouting process involves multiple stages, including low-pressure, medium-pressure, and high-pressure grouting. For each stage, a corresponding grouting adjustment model is trained. The grouting stage refers to dividing the entire grouting construction process into several parts according to different pressure levels. The low-pressure grouting stage is used in the initial stage of construction to ensure the grout can smoothly enter the soil pores. The medium-pressure grouting stage is used for the grout to diffuse and fill the soil, forming a stable structure. The high-pressure grouting stage mostly occurs in the later stages of construction to enhance the overall bearing capacity of the stratum or achieve a water-stopping effect.

[0036] Historical construction data and historical soil response data were extracted for the low-pressure, medium-pressure, and high-pressure grouting stages. Historical construction data included engineering records such as grouting pump pressure curves, grouting volume, and grouting rate. Historical soil response data referred to information such as ground displacement, pore water pressure changes, and surface settlement monitored during past construction. By extracting data, corresponding input-output relationships could be established for each stage, thereby reflecting the true response of the soil under different pressure levels. For example, in the low-pressure stage, soil response data might show a slower grout infiltration rate, while in the high-pressure stage, soil response data might show increased surface heave.

[0037] Based on historical construction data and soil response data, pattern recognition and regularity extraction are performed to construct predictive and adjustable models, resulting in low-pressure grouting adjustment models, medium-pressure grouting adjustment models, and high-pressure grouting adjustment models. The low-pressure grouting adjustment model helps maintain stable grouting pressure within a small range to avoid grout stagnation. The medium-pressure grouting adjustment model can dynamically adjust pressure and flow rate according to the diffusion range, while the high-pressure grouting adjustment model focuses on avoiding soil damage caused by excessive pressure. For example, after training thousands of construction samples using neural network algorithms, automatic control capabilities for different stages can be formed, making the control of each stage more scientific and precise.

[0038] S3: Real-time grouting pressure data is obtained by monitoring the real-time monitoring module and matched with the multiple grouting stages to lock the target grouting stage.

[0039] Furthermore, this application also includes: continuously monitoring the pressure and flow rate during the grouting process through a real-time monitoring module to obtain real-time grouting pressure data; comparing the real-time grouting pressure data with preset pressure sub-ranges for multiple grouting stages; and determining the target grouting stage of the current grouting construction based on the comparison results.

[0040] Specifically, the pressure and flow rate during the grouting process are continuously monitored by a real-time monitoring module to obtain real-time grouting pressure data. The real-time monitoring module is a device that integrates sensors, data acquisition, and transmission functions. It can continuously collect key parameters during the grouting construction process. Pressure refers to the force exerted by the grout on the stratum when it is injected into the soil, and flow rate is the volume of grout injected per unit time. Continuous monitoring means high-frequency real-time acquisition, thereby forming a complete dynamic change curve.

[0041] The real-time grouting pressure data is compared with the preset pressure sub-ranges for multiple grouting stages. The real-time grouting pressure data is the current value obtained from monitoring, while the preset pressure sub-ranges are the pressure intervals for each stage divided by interval clustering analysis. The comparison process is to match the current actual value with each sub-range to determine the interval range of the stage. For example, if the real-time monitored pressure is 0.35 MPa, and the sub-range of the medium pressure stage is 0.3 MPa to 0.38 MPa, then the comparison result will classify the pressure as belonging to the medium pressure stage.

[0042] Based on the comparison results, the target grouting stage of the current grouting construction is determined. The target grouting stage refers to the stage corresponding to the actual pressure range of the current construction. By comparing, the construction progress can be clarified, thus providing a basis for subsequent grouting adjustments, thereby ensuring the controllability of the construction process. It can also automatically call the adjustment model of the corresponding stage. For example, if it is determined that it is in the high pressure stage, the high pressure adjustment model is called to avoid formation damage, thereby achieving phased and targeted control.

[0043] S4: Based on the target grouting stage, activate the target grouting adjustment model, and use the real-time grouting pressure data and real-time soil characteristic data as inputs to perform grouting adjustment analysis and generate a stage pressure control scheme.

[0044] Furthermore, this application also includes: activating the target grouting adjustment model corresponding to the target grouting stage; inputting real-time grouting pressure data and real-time soil characteristic data into the target grouting adjustment model for adjustment analysis, and outputting grouting pressure adjustment instructions; generating a stage pressure control scheme according to the grouting pressure adjustment instructions, wherein the stage pressure control scheme includes the target value of grouting pressure adjustment, adjustment speed, and adjustment time.

[0045] Specifically, the target grouting adjustment model corresponding to the target grouting stage is activated. Activation means that during the grouting construction process, based on the construction stage determined by comparison, a specific adjustment model that has been trained is automatically called and put into use. The target grouting stage refers to the current low-pressure stage, medium-pressure stage, or high-pressure stage of the construction. The target grouting adjustment model is an intelligent control tool trained for the pressure characteristics and soil response laws of that stage. For example, when the real-time monitoring results show that it is in the medium-pressure stage, the medium-pressure grouting adjustment model is activated in order to more accurately control the grout diffusion range.

[0046] Real-time grouting pressure data and real-time soil property data are input into the target grouting adjustment model for adjustment and analysis, and the model outputs a grouting pressure adjustment command. The real-time grouting pressure data is the instantaneous pressure value collected by the monitoring module, and the real-time soil property data refers to the soil state parameters obtained during construction, such as porosity, water content and deformation. After receiving these input data, the grouting adjustment model performs analysis through calculation and pattern recognition, and finally outputs an adjustment command to indicate how to change the grouting pressure to ensure that the grout can penetrate into the soil layer.

[0047] A stage pressure control scheme is generated based on the grouting pressure adjustment command. The stage pressure control scheme includes the target value of grouting pressure adjustment, the adjustment speed, and the adjustment time. The stage pressure control scheme is a specific operation guide. The target value refers to the final pressure to be achieved, the adjustment speed refers to the rate of pressure change, and the adjustment time refers to the time required to complete the adjustment. These three parameters together determine the stability and safety of pressure changes.

[0048] S5: Execute the stage pressure control scheme to control the grouting pressure in the target grouting stage.

[0049] Specifically, execution refers to putting the control plan into practice on the actual construction equipment. The stage pressure control plan is a set of instructions that includes parameters such as the target value of grouting pressure, adjustment speed, and adjustment time. The target grouting stage refers to the current low-pressure stage, medium-pressure stage, or high-pressure stage of construction. Grouting pressure control is to adjust the output of the grouting pump, the flow rate of grout, and the opening and closing of valves to make the actual grouting pressure gradually approach and stabilize within the target value range set in the plan.

[0050] In summary, the grouting pressure control method for the grouting construction process in urban underground space provided in this application has the following technical effects: by achieving the technical goal of dynamically adjusting the grouting pressure according to the real-time grouting pressure and soil characteristics, it achieves the technical effects of precise pressure control, uniform grout diffusion, significant improvement in the stratum reinforcement effect, and comprehensive improvement in construction safety and efficiency during the grouting construction process.

[0051] Example 2: Based on the same inventive concept as the grouting pressure control method for urban underground space grouting construction in the foregoing examples, this application also provides a grouting pressure control device for urban underground space grouting construction. Please refer to the appendix. Figure 2 The system includes: a target pressure range determination module 1, used to acquire the geological conditions and soil characteristics of the target urban underground space, and determine the target pressure range for grouting construction, wherein the target pressure range is a floating pressure interval; a grouting adjustment model training module 2, used to divide multiple grouting stages based on the target pressure range and train corresponding grouting adjustment models; a target grouting stage locking module 3, used to acquire real-time grouting pressure data through a real-time monitoring module, match it with the multiple grouting stages, and lock the target grouting stage; a stage pressure control scheme generation module 4, used to activate the target grouting adjustment model based on the target grouting stage, and perform grouting adjustment analysis with the real-time grouting pressure data and real-time soil characteristic data as input, and generate a stage pressure control scheme; and a grouting pressure control module 5, used to execute the stage pressure control scheme and control the grouting pressure of the target grouting stage.

[0052] Furthermore, the grouting pressure control device for the grouting construction process in urban underground space is also used for: conducting geological exploration of the target urban underground space to obtain rock and soil geological data; determining the upper limit and lower limit of grouting pressure based on the rock and soil geological data and the requirements of the grouting task; obtaining surrounding environmental data, fine-tuning the upper limit and lower limit of grouting pressure, and determining the target pressure range for grouting construction.

[0053] Furthermore, the grouting pressure control device in the urban underground space grouting construction process is also used to: assess the bearing capacity of the stratum and the diffusion capacity of the grout through the rock and soil geological data, and determine the upper limit of the grouting pressure; and determine the lower limit of the grouting pressure according to the grouting task requirements, combined with the flow characteristics of the grouting liquid and the bearing capacity of the stratum.

[0054] Furthermore, the grouting pressure control device for the grouting construction process in the urban underground space is also used to: perform interval clustering analysis based on the pressure fluctuation range of the target pressure range, divide the grouting construction process into multiple grouting stages, each grouting stage corresponding to a pressure sub-range; and train a corresponding grouting adjustment model for each grouting stage.

[0055] Furthermore, the grouting pressure control device for the grouting construction process in urban underground space is also used for: the multiple grouting stages include a low-pressure grouting stage, a medium-pressure grouting stage, and a high-pressure grouting stage; extracting historical construction data and historical soil reaction data for the low-pressure grouting stage, the medium-pressure grouting stage, and the high-pressure grouting stage respectively; and using machine learning to train and obtain a low-pressure grouting adjustment model, a medium-pressure grouting adjustment model, and a high-pressure grouting adjustment model based on the historical construction data and the soil reaction data.

[0056] Furthermore, the grouting pressure control device for the grouting construction process in urban underground space is also used to: continuously monitor the pressure and flow rate during the grouting process through a real-time monitoring module to obtain real-time grouting pressure data; compare the real-time grouting pressure data with the preset pressure sub-ranges of multiple grouting stages; and determine the target grouting stage of the current grouting construction based on the comparison results.

[0057] Furthermore, the grouting pressure control device for the grouting construction process in urban underground space is also used for: activating the target grouting adjustment model corresponding to the target grouting stage; inputting real-time grouting pressure data and real-time soil characteristic data into the target grouting adjustment model for adjustment analysis, and outputting grouting pressure adjustment instructions; generating a stage pressure control scheme according to the grouting pressure adjustment instructions, wherein the stage pressure control scheme includes the target value of grouting pressure adjustment, adjustment speed, and adjustment time.

[0058] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The grouting pressure control method and specific examples in the urban underground space grouting construction process described in the foregoing embodiment one are also applicable to the grouting pressure control device in the urban underground space grouting construction process of this embodiment. Through the foregoing detailed description of the grouting pressure control method in the urban underground space grouting construction process, those skilled in the art can clearly understand the grouting pressure control device in the urban underground space grouting construction process of this embodiment. Therefore, for the sake of brevity, it will not be described in detail here.

[0059] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0060] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of this application and its equivalents, this application also intends to include such modifications and variations.

Claims

1. A method for controlling the grouting pressure in the process of grouting construction of urban underground space, characterized in that, The method comprises: obtaining the geological conditions and soil characteristics of the target urban underground space, determining the target pressure range of the grouting construction, the target pressure range being a floating pressure interval; dividing multiple grouting stages based on the target pressure range, and training corresponding grouting adjustment models; acquiring real-time grouting pressure data through a real-time monitoring module, and matching the real-time grouting pressure data with the multiple grouting stages to lock the target grouting stage; based on the target grouting stage, activating the target grouting adjustment model, taking the real-time grouting pressure data and real-time soil characteristic data as input, performing grouting adjustment analysis, and generating a stage pressure control scheme; executing the stage pressure control scheme to control the grouting pressure in the target grouting stage.

2. The grouting pressure control method for the grouting construction process in urban underground space as described in claim 1, characterized in that, Obtaining the geological conditions and soil characteristics of the target urban underground space, determining the target pressure range of the grouting construction, comprises: conducting geological exploration on the target urban underground space to obtain rock and soil data; based on the rock and soil data, combined with the grouting task requirements, determining the upper limit value of the grouting pressure and the lower limit value of the grouting pressure; acquiring surrounding environment data, fine-tuning the upper limit value of the grouting pressure and the lower limit value of the grouting pressure, and determining the target pressure range of the grouting construction.

3. The grouting pressure control method for the grouting construction process of the urban underground space according to claim 2, based on the rock and soil data, combined with the grouting task requirements, determining the upper limit value of the grouting pressure and the lower limit value of the grouting pressure, comprises: evaluating the stratum bearing capacity and the grout diffusion capacity through the rock and soil data to determine the upper limit value of the grouting pressure; combined with the flow characteristics of the grouting liquid and the stratum bearing capacity, determining the lower limit value of the grouting pressure according to the grouting task requirements.

4. The grouting pressure control method for the grouting construction process of the urban underground space according to claim 1, dividing multiple grouting stages based on the target pressure range, and training corresponding grouting adjustment models, comprises: performing interval clustering analysis according to the pressure floating range of the target pressure range, dividing the grouting construction process into multiple grouting stages, and each grouting stage corresponding to a pressure sub-range; training a corresponding grouting adjustment model for each grouting stage.

5. The grouting pressure control method for the grouting construction process in urban underground space as described in claim 4, characterized in that, Training the corresponding grouting adjustment model comprises: the multiple grouting stages include a low-pressure grouting stage, a medium-pressure grouting stage, and a high-pressure grouting stage; extracting historical construction data and historical soil reaction data for the low-pressure grouting stage, the medium-pressure grouting stage, and the high-pressure grouting stage, respectively; based on the historical construction data and soil reaction data, using machine learning to train and obtain a low-pressure grouting adjustment model, a medium-pressure grouting adjustment model, and a high-pressure grouting adjustment model.

6. The grouting pressure control method for the grouting construction process in urban underground space as described in claim 1, characterized in that, Acquiring real-time grouting pressure data through a real-time monitoring module, and matching the real-time grouting pressure data with the multiple grouting stages to lock the target grouting stage, comprises: continuously monitoring the pressure and flow during the grouting process through the real-time monitoring module to acquire real-time grouting pressure data; comparing the real-time grouting pressure data with the preset pressure sub-ranges of the multiple grouting stages; determining the target grouting stage in which the current grouting construction is located according to the comparison result.

7. The grouting pressure control method for the grouting construction process in urban underground space as described in claim 1, characterized in that, Based on the target grouting stage, activate the target grouting adjustment model, take the real-time grouting pressure data and real-time soil property data as input, perform grouting adjustment analysis, and generate a stage pressure control scheme, including: activating the target grouting adjustment model corresponding to the target grouting stage; inputting the real-time grouting pressure data and real-time soil property data into the target grouting adjustment model for adjustment analysis, and outputting grouting pressure adjustment instructions; generating a stage pressure control scheme according to the grouting pressure adjustment instructions, the stage pressure control scheme including an adjustment target value, an adjustment speed, and an adjustment time of the grouting pressure.

8. A grouting pressure control device for a grouting construction process of urban underground space, characterized by, The steps of the grouting pressure control method for implementing the urban underground space grouting construction process according to any one of claims 1 to 7, comprising: a target pressure range determination module for obtaining the geological conditions and soil properties of the target urban underground space, determining the target pressure range of the grouting construction, and the target pressure range being a floating pressure interval; a grouting adjustment model training module for dividing a plurality of grouting stages based on the target pressure range and training corresponding grouting adjustment models; a target grouting stage locking module for monitoring and obtaining real-time grouting pressure data through a real-time monitoring module, and matching the target grouting stage with the plurality of grouting stages; a stage pressure control scheme generation module for activating the target grouting adjustment model based on the target grouting stage, taking the real-time grouting pressure data and real-time soil property data as input, performing grouting adjustment analysis, and generating a stage pressure control scheme; a grouting pressure control module for executing the stage pressure control scheme and performing grouting pressure control in the target grouting stage.

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