Groundwater digital twin dynamic feedback control method, system, device and medium

Abstract

This application discloses a dynamic feedback control method for groundwater digital twins. This method establishes a virtual mapping of groundwater seepage and engineering response by constructing a parametric digital twin analysis model integrating geology, structure, and drainage systems. It provides a clear boundary for dynamic control by defining the target range of water pressure (P) - drainage volume (Q) - ground deformation (F) constrained by structural bearing capacity, environmental drainage limitations, and ground deformation control requirements. Furthermore, by sensing actual P-Q-F data and comparing it with the target range, the digital twin analysis model predicts the control effect and drives the water control and pressure regulating valve matrix to adjust the opening and closing status of the drainage holes. This method overcomes the limitations of existing "strict waterproofing" and "complete drainage" technologies, achieving dynamic, precise, and intelligent control of groundwater conditions under high water pressure, thus ensuring the safety of the engineering structure while meeting the requirements for limiting drainage and controlling settlement in the surrounding environment.

Description

Technical Field

[0001] This application relates to the field of underground engineering construction and operation and maintenance technology, and in particular to a groundwater digital twin dynamic feed control method, system, equipment and medium suitable for environments with high water pressure, restricted drainage and the need to control stratum subsidence. Background Technology

[0002] As urban development expands into deeper underground spaces, the water pressure faced by underground engineering projects has increased significantly. Existing groundwater treatment technologies are mainly divided into two types: one is "strict waterproofing" technology, which relies on the structure itself to completely resist water pressure. This method can lead to structural design difficulties, soaring costs, or even infeasibility under deep high water pressure. The other is "complete drainage" technology, which allows groundwater to be discharged freely. Although this method reduces the structural load, it can lead to the loss of groundwater resources and subsidence of the surrounding strata, endangering the safety of buildings and structures in densely built urban environments.

[0003] Therefore, in environments with high water pressure and limited drainage, existing technologies face a core contradiction: "strict waterproofing - structural limitations" versus "complete drainage - environmental unacceptability," severely restricting the development and utilization of deep underground spaces. Thus, a new technological approach is urgently needed that can dynamically balance the water pressure on the structure, the permissible drainage capacity of the environment, and ground deformation. Summary of the Invention

[0004] The purpose of this application is to solve at least one of the technical problems existing in the prior art mentioned above, and to propose a groundwater digital twin dynamic feed-through control method, system, equipment, and medium. Through digital twin technology, it achieves real-time perception, prediction, and dynamic control of groundwater conditions, realizing a dynamic balance between water pressure on the structure, environmentally permissible drainage volume, and stratum deformation, thus overcoming the core contradiction of "strict waterproofing - structural inability to withstand" and "complete drainage - environmental inability to withstand." To achieve the above objectives, the present invention adopts the following technical solution:

[0005] In a first aspect, embodiments of this application provide a groundwater digital twin dynamic feed control method, including:

[0006] Construct a digital twin analysis model for deep-earth engineering structures under parameterized multidimensional constraints of high water pressure, limited discharge, and controlled settlement;

[0007] Determine the water pressure-drainage-formation deformation relationship curve and the control target range for dynamic regulation of groundwater;

[0008] Based on the digital twin analysis model and measured water pressure-discharge-formation deformation data, the groundwater discharge and water pressure are dynamically controlled by a water control and pressure regulating valve matrix, so that the water pressure-discharge-formation deformation parameters are dynamically maintained within the control target range.

[0009] Furthermore, constructing the digital twin analysis model includes:

[0010] A geological model is constructed based on hydrogeological borehole information, and a deep-earth engineering structure model is generated using a parametric method; wherein the deep-earth engineering structure model supports circular or multi-centered circular cross sections;

[0011] A model of a drainage system based on seepage motion control is constructed, and the actual drainage behavior is mapped by setting the permeable interface, the permeability coefficient of the grouting curtain ring and / or the boundary conditions of the drainage holes.

[0012] Furthermore, determining the target range for regulation includes:

[0013] Determine the maximum limiting water pressure P that deep-earth engineering structures can withstand. lim , stratigraphic allowable deformation F lim and environmentally permissible discharge Q lim ;

[0014] P is obtained through the digital twin analysis model. lim Corresponding displacement Q P and stratigraphic deformation F P F lim The corresponding water pressure P F and displacement Q F Q lim The corresponding water pressure P Q and stratigraphic deformation F Q ;

[0015] With P lim As the upper limit, with max(P) Q , P F ) is the lower limit P min The target range for regulation is determined to be [P]. min , P lim ].

[0016] Furthermore, the dynamic control includes:

[0017] Real-time acquisition of water pressure, drainage volume, and formation deformation data;

[0018] When the measured water pressure-discharge-formation deformation data exceed the control target range or show an adverse trend, the digital twin analysis model is activated to perform iterative prediction and find a drainage hole opening and closing scheme that is suitable for the control target range.

[0019] The opening and closing status of the drain holes is adjusted according to the drain hole opening and closing scheme adapted to the control target range, so as to achieve gradual adjustment of water pressure and drainage volume.

[0020] Furthermore, a parametric method is used to generate a deep-earth engineering structure model, including:

[0021] For a multi-centered circular cross-section, the coordinates of the i-th arc segment are calculated using the following formula:

[0022] ;

[0023] ;

[0024] Where φ represents the central angle; φ represents the radius of the i-th arc segment; j Let represent the central angle of the j-th arc segment.

[0025] Furthermore, tools for collecting water pressure-displacement-formation deformation data include water pressure sensors;

[0026] The water pressure sensor is arranged at the center of four adjacent drain holes and / or the middle of two adjacent drain holes to monitor the maximum water pressure on the outer surface of the deep-earth engineering structure.

[0027] Furthermore, the water control and pressure regulating valve matrix consists of multiple water control and pressure regulating valves, each of which controls the opening and closing of a drain hole, thereby achieving multi-level and gradual adjustment of the drainage volume through unified control.

[0028] Secondly, embodiments of this application provide a groundwater digital twin dynamic feed-control system capable of implementing the groundwater digital twin dynamic feed-control method described in any of the foregoing claims, comprising:

[0029] The waterproofing subsystem includes a grouting curtain ring installed around the deep-ground engineering structure and a waterproofing layer laid on the outer surface of the deep-ground engineering structure;

[0030] The drainage subsystem includes blind drainage pipes distributed longitudinally along the deep-ground engineering structure and drain holes installed on them;

[0031] The control subsystem includes a water pressure sensor, a water control and pressure regulating valve, and a dynamic feed control center. The water pressure sensor is arranged at a key position preset between the drain holes, the water control and pressure regulating valve is located at the drain hole, and the dynamic feed control center controls the opening and closing of the water control and pressure regulating valve based on a digital twin analysis model and the control target range.

[0032] Thirdly, embodiments of this application provide an electronic device, including: one or more processors;

[0033] A memory for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors are able to implement the steps in the groundwater digital twin dynamic feed control method described in any of the preceding claims.

[0034] Fourthly, embodiments of this application provide a computer-readable medium storing a computer program, which, when executed by a processor, can implement the steps in the groundwater digital twin dynamic feed control method described in any of the preceding claims.

[0035] This application discloses a dynamic feedback control method for groundwater digital twins. This method establishes a virtual mapping of groundwater seepage and engineering response by constructing a parametric digital twin analysis model integrating geology, structure, and drainage systems. It provides clear boundaries for dynamic control by defining the target range of water pressure (P), drainage volume (Q), and ground deformation (F), which is jointly constrained by structural bearing capacity, environmental drainage limitations, and ground deformation control requirements. Furthermore, by sensing actual PQF data and comparing it with the target range, the digital twin analysis model predicts the control effect and drives the water control and pressure regulating valve matrix to adjust the opening and closing status of the drainage holes. This method overcomes the limitations of existing "strict waterproofing" and "complete drainage" technologies, achieving dynamic, precise, and intelligent control of groundwater conditions under high water pressure, thus ensuring the safety of the engineering structure while meeting the requirements for limiting drainage and controlling settlement in the surrounding environment. Attached Figure Description

[0036] Figure 1 This application provides a core flowchart of a groundwater digital twin dynamic feed control method.

[0037] Figure 2 A schematic diagram of a parameterized deep-earth engineering fluid-structure interaction numerical analysis model provided in this application embodiment;

[0038] Figure 3 This is a schematic diagram of parametric modeling of a multi-centered circular tunnel structure provided in an embodiment of this application;

[0039] Figure 4 This is a schematic diagram of the overall structure of the drainage system for underground space in high-pressure, limited-discharge strata provided in this application embodiment;

[0040] Figure 5 This is a partial structural diagram of the drainage system for underground space in high-pressure, limited-discharge strata provided in an embodiment of this application.

[0041] Figure 6 This is a schematic diagram of the water pressure distribution along the line connecting adjacent open drain holes provided in an embodiment of this application;

[0042] Figure 7 A schematic diagram of water pressure distribution in a blind drain pipe with an open drain hole, provided for an embodiment of this application;

[0043] Figure 8A schematic diagram of the structure of the digital twin dynamic feed control system for groundwater under multidimensional constraints of water pressure, drainage volume, and formation deformation provided in this embodiment of the application;

[0044] Figure 9 This is a schematic diagram of the multi-dimensional constraints and control target range of high water pressure-limited discharge-controlled sedimentation provided in the embodiments of this application;

[0045] Figure 10 This is a structural block diagram of an electronic device provided in an embodiment of this application. Detailed Implementation

[0046] To enable those skilled in the art to better understand the technical solutions of this application, exemplary embodiments of this application are described below with reference to the accompanying drawings, including various details of the embodiments of this application to aid understanding. These should be considered merely exemplary. Therefore, those skilled in the art should recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. Similarly, for clarity and conciseness, descriptions of well-known functions and structures are omitted in the following description. Unless otherwise specified, the various embodiments of this application and the features within those embodiments can be combined with each other.

[0047] As used herein, the term “and / or” includes any and all combinations of one or more of the associated enumerated entries. The terminology used herein is for describing particular embodiments only and is not intended to limit the application. As used herein, the singular forms “a” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that when the terms “comprising” and / or “made of” are used in this specification, the presence of the stated features, integrals, steps, operations, elements, and / or components is specified, but the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof is not excluded. Terms such as “connected” or “linked” are not limited to physical or mechanical connections but can include electrical connections, whether direct or indirect.

[0048] Unless otherwise specified, all terms used herein (including technical and scientific terms) have the same meaning as commonly understood by one of ordinary skill in the art. It should also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having the meaning consistent with their meaning in the context of the relevant art and this application, and will not be interpreted as having an idealized or overly formal meaning, unless expressly so defined herein.

[0049] In existing groundwater treatment technologies, when the groundwater pressure is not high (such as most existing urban underground projects with a burial depth of no more than 40 m), strict waterproofing groundwater treatment methods are generally adopted to avoid adverse effects on the urban environment; while when the groundwater pressure is high (such as underground projects with a burial depth of 50 m or more, or even hundreds of meters, such as mountain tunnels), groundwater treatment methods that prioritize drainage are generally adopted to avoid the structure bearing excessive water pressure.

[0050] However, when applying existing groundwater treatment technologies to "high-pressure, restricted-discharge environments" such as deep underground urban spaces characterized by both high water pressure and restricted discharge, the following prominent contradictions arise:

[0051] (1) The existing technology for strict waterproofing cannot withstand the high water pressure in deep underground spaces.

[0052] Most existing urban underground space projects are no more than 30 meters deep, with those exceeding 40 meters being extremely rare. When using existing, strictly waterproof technologies, the underground structure can withstand 100% of the original water pressure, making it feasible to increase the structure's water resistance. However, with continued urbanization, deep underground space projects reaching depths of 50 meters and beyond are emerging, significantly increasing groundwater pressure. In such cases, relying solely on existing, strictly waterproof technologies will make it difficult for the structure to withstand such a massive groundwater load, rendering the structural design infeasible and severely hindering the development and utilization of deep urban underground spaces.

[0053] (2) The existing technology of complete drainage cannot meet the environmental requirements of urban underground drainage, such as environmental drainage volume and control of stratum deformation caused by additional deformation.

[0054] For tunnel projects buried deep in mountains, existing technologies for complete drainage can be adopted when groundwater pressure is high. When completely drained, the groundwater pressure on the structure drops to zero. However, the discharge of groundwater may cause changes in the groundwater environment and deformation of the strata. For sparsely populated rural mountainous areas, existing technologies for complete drainage are feasible. However, for environments with groundwater discharge restrictions, such as urban underground spaces with dense buildings and people, complete drainage will not only significantly disrupt the normal groundwater cycle, but may also cause additional settlement of buildings and structures, and even endanger the safety of people and property. Existing technologies for complete drainage are unacceptable in such cases.

[0055] Existing stringent waterproofing technologies make it difficult for structures to withstand the load, while complete drainage seriously affects the safety of geology, buildings, and personnel. This prominent contradiction severely restricts the development and utilization of high-pressure, limited-drainage underground spaces, such as deep underground spaces in cities.

[0056] The key technical issues that this application needs to address include:

[0057] (1) Break through the core technical bottlenecks of “strict waterproofing - structural inability to bear” and “complete drainage - environmental inability to bear” in high water pressure limited discharge underground space, and propose a technically feasible high water pressure limited discharge environmental groundwater treatment technology.

[0058] The groundwater pressure borne by the structure is the original, undiminished groundwater pressure under strict waterproofing conditions. However, after drainage measures are implemented and water is drained, the groundwater pressure borne by the structure begins to decrease. When the groundwater is completely drained (i.e., the drainage volume per unit time equals the groundwater recharge), the groundwater pressure borne by the structure drops to zero, representing a fully drained state. It can be seen that there is a negative correlation between groundwater pressure P and drainage volume Q. Strict waterproofing and full drainage correspond to two extreme states of the PQ relationship, respectively. An intermediate state in the PQ relationship may exist where both groundwater pressure and drainage volume simultaneously meet the requirements. Determining this intermediate state is a key technical challenge that needs to be addressed.

[0059] (2) Establish groundwater regulation technology that can cope with the periodic changes in the groundwater environment.

[0060] Groundwater is not static but constantly changing. Especially in scenarios with deep underground development needs, such as deep urban underground spaces, groundwater content is generally abundant and fluctuates seasonally. Therefore, it is necessary to establish dynamic regulation technologies capable of responding to groundwater changes.

[0061] (3) Construct a software and hardware system that can realize dynamic regulation of groundwater.

[0062] To achieve dynamic regulation of groundwater, it is necessary to construct a software and hardware system for dynamic regulation of groundwater that can sense the movement of groundwater and adjust the drainage volume and water pressure. This is another key technical challenge that needs to be solved to achieve groundwater treatment in high-pressure restricted drainage strata.

[0063] (4) Construct a groundwater feed control technology with multi-dimensional constraints such as water pressure, drainage volume, and formation deformation.

[0064] A groundwater digital twin dynamic feed-control method is proposed, which takes into account the external water pressure P borne by the structure, the drainage volume Q, and the formation deformation F, and is coordinated by multiple parameters such as structural design parameters and formation treatment parameters, and satisfies the multidimensional constraints of high water pressure, limited drainage and controlled settlement.

[0065] refer to Figure 1 One embodiment of this application proposes a digital twin dynamic feed control method for groundwater under a multi-dimensional constraint environment of high water pressure, limited discharge, and controlled sedimentation. The method may specifically include the following steps.

[0066] Step 1: Construct a digital twin analysis model of deep-earth engineering structures under parameterized high water pressure-limited discharge-controlled sedimentation multidimensional constraints.

[0067] Using a parametric approach, a numerical analysis model for deep-earth engineering structures is constructed under multi-dimensional constraints, including high water pressure load, limited drainage environment constraints, and settlement-controlled geological constraints. The model consists of the following parts.

[0068] 1. A rapid method for constructing digital twin analysis models of deep earth engineering structures

[0069] Construct a parametric fluid-structure interaction numerical analysis model for deep earth engineering. (See schematic diagram for reference.) Figure 2 .

[0070] The model consists of the following parts:

[0071] (1) Geological model

[0072] Input hydrogeological borehole information and construct a geological model. To balance computational efficiency and accuracy, the mesh generation of the geological model should meet the following control requirements:

[0073] The geological model mesh size of the adjacent tunnel structure is the minimum size of the geological body, satisfying the following:

[0074] (1)

[0075] In formula (1): l ave The average side length of the grid near the underground structure; l i t represents the length of the i-th edge in the corresponding grid cell; N represents the total number of edges in the corresponding grid cell; lining It refers to the thickness of the outer wall of an underground structure (such as the secondary lining of a tunnel).

[0076] Equation (1) only needs to constrain the geological grid cells in contact with the underground structure. As the distance between the grid cell and the underground structure increases, l ave The value can be increased gradually to avoid consuming too many computing resources and to speed up the response of the numerical analysis model.

[0077] (2) Parametric rapid modeling of underground structures (or deep earth engineering structures, underground engineering structures, etc.)

[0078] For specific projects, an underground structure model is created and a mesh is generated.

[0079] This application provides a parametric modeling method for common circular cross-sections and multi-centered circles in underground engineering (parametric modeling methods can achieve automated and rapid modeling and have good iterative update conditions; this application uses parametric modeling methods to construct the structural analysis model of a digital twin system):

[0080] Users can specify the key geometric parameters of the multi-centered circular (circular cross-sections can be regarded as single-centered circular cross-sections) cross-sections, and the corresponding underground structure models will be automatically generated by the numerical model provided in this application.

[0081] The user-specifiable cross-sectional parameters are: the number of arcs n, and the radius r of each arc segment. i The central angle φ of each arc segment i ,refer to Figure 3 .

[0082] The parametric modeling method for multi-circle tunnel cross-sections is as follows:

[0083] The coordinates of the first arc segment can be calculated and modeled according to equations (2) and (3):

[0084] (2)

[0085] (3)

[0086] In equations (2) and (3): φ is the central angle of the calculation point, which is defined as the angle between the line connecting the calculation point and the center of the corresponding arc and the vertical line. See [link to equation (2)] for details. Figure 3 .

[0087] The coordinates of the i-th arc segment can be calculated and modeled according to equations (4) and (5):

[0088] (4)

[0089] (5)

[0090] Equations (2) to (5) can not only complete the modeling of the lining structure, but also the modeling of the waterproof layer and grouting curtain ring with the same geometric properties. (Refer to...) Figure 2 .

[0091] (3) Modeling method for drainage and waterproofing system based on seepage motion control

[0092] To maximize the computational speed of the structural analysis model in the digital twin system while ensuring computational accuracy, this application adopts a method of controlling hydraulic boundary conditions for modeling the drainage system.

[0093] The process involves aligning multivariate parameters between the "hydrogeological and drainage system design of the actual project" and the "hydraulic boundary conditions of the model" to perform digital twin simulation and control of underground seepage movement. Specifically, this includes:

[0094] Permeable and impermeable formations: The permeability of formations is mapped by setting a permeable interface in the model.

[0095] Grouting curtain ring: The water-stopping effect of the grouting curtain ring is reflected by the actual permeability coefficient of the curtain ring, and the formation reinforcement and deformation control effect of the grouting curtain ring is reflected by the cohesion and friction angle.

[0096] Drainage system: When drainage holes are set, for open drainage holes, the pore water pressure of the corresponding grid cells and nodes is set to zero for digital twin mapping; for closed drainage holes, they are used as impermeable boundaries in seepage calculation.

[0097] Except for the geological model, which is an objective condition and does not need to be changed after modeling, the application allows for rapid parametric modeling and updating of underground engineering structures, stratum reinforcement measures (grouting curtain ring), and drainage systems, thereby leveraging the response speed advantage of the digital twin system.

[0098] 2. Sensor Arrangement

[0099] (1) Water pressure measurement and sensing

[0100] Reference for underground engineering structure waterproofing and drainage system Figure 4 and Figure 5 (See the high water pressure limited discharge and controlled sedimentation environment composite waterproofing and drainage structure system in step 3 below), install distributed array water pressure sensors on the exterior of the underground engineering structure.

[0101] The water pressure sensor is positioned at the center of four adjacent drainage holes and / or the midpoint of two adjacent drainage holes. The water pressure distribution in the underground structure after groundwater seepage is not uniform; it is zero at the opened drainage holes, while the maximum value P of the current PQF balance combination (see step 2 below) is reached at the location furthest from the drainage holes. imax Therefore, the water pressure sensor should be placed at the location where the maximum water pressure is likely to occur: when all drain holes are open, the external water pressure borne by the structure at the center of four adjacent drain holes reaches its maximum value; when the drain hole interval begins, the external water pressure borne by the structure at the center of two adjacent drain holes reaches its maximum value. (Reference) Figure 6 and Figure 7 .

[0102] The maximum measured external water pressure P is based on the water pressure sensor. imax The groundwater pressure P at the monitoring point obtained by numerical analysis emax Establish a digital twin mapping.

[0103] (2) Deformation measurement and sensing

[0104] The main requirement for ground deformation in urban deep underground spaces and other construction environments is to control ground deformation to not exceed the settlement (or uneven settlement) limits of adjacent buildings and structures, in order to maintain the normal operation and structural safety of existing buildings and structures. Therefore, deformation measurement is determined based on the deformation control and measurement requirements of existing buildings and structures. The measurement results are incorporated into the numerical analysis model of this application, with reference to... Figure 8 .

[0105] Based on the user-specified deformation control index requirements, building settlement observation values ​​and underground structure deformation monitoring values ​​can be integrated into the digital twin analysis model to conduct multi-dimensional parameter coordinated groundwater feed control.

[0106] 3. Parameter System Construction

[0107] (1) Input parameters

[0108] Input parameters include two types:

[0109] ① The detection data read by each sensor, including the water pressure distribution provided by the water pressure sensor, the drainage distribution monitored by the water control and pressure regulating valve, and the deformation of the control point measured by the deformation sensor.

[0110] ② Basic engineering parameters, including hydrogeological parameters and structural technical parameters.

[0111] (2) Output parameters

[0112] Output parameters include two types:

[0113] ① Structural effect parameters, such as the distribution of internal forces in the structure and the stress level of the strata.

[0114] ② Verification parameters refer to the PQF parameters predicted by the structural analysis model after groundwater regulation.

[0115] 4. Parameter Calculation and Feedback Control Method

[0116] The methods for parameter calculation and feedback control differ at different stages of design and operation and maintenance.

[0117] (1) During the design phase, structural design parameters such as lining thickness, curtain ring range, and physical and mechanical parameters can be modified, and the project cost parameters can be used as target parameters. At this time, the digital twin analysis model plays more of a role as a structural design analysis model. During the construction phase, the digital twin analysis model needs to be validated.

[0118] (2) During the operation and maintenance phase, the structural design parameters cannot be changed, and the digital twin analysis model plays the role of the underground feeder control center under multi-dimensional constraints:

[0119] Step 141: Read in the current measured PQF value and determine:

[0120] Criterion 1: Does the current PQF value meet the target interval requirements (see step 2 below for details)?

[0121] Criterion 2: Whether the current PQF trend has not evolved towards deviating from the target range.

[0122] When the PQF value does not meet any of the above criteria, the digital twin system structure analysis model (digital twin analysis model) is activated to carry out iterative analysis of the underground structure.

[0123] Step 142: Calculate the expected water pressure P obtained from the model analysis. v Expected infiltration flow Q v Expected control point deformation F v Compare with the target interval:

[0124] When P v -Q v -F v If the combination does not meet the control target requirements, proceed to the next iteration.

[0125] When P v -Q v -F v When the combination meets the control target requirements, the control command is sent to the water control and pressure regulating valve matrix for dynamic control of groundwater.

[0126] Step 143: Proceed back to step 141 to verify the control results.

[0127] Water pressure regulating valve matrix: The distributed water pressure regulating valves / drainage holes proposed in this application form a water pressure regulating valve matrix. By controlling the opening and closing degree of the entire underground structure drainage system (0 represents closed; 1 represents open), it achieves multi-level, gradual dynamic feedback control of water pressure P and drainage volume Q. The specific form of the matrix is ​​as follows:

[0128]

[0129] Step 2: Determine the water pressure-drainage-formation deformation relationship curve and the control target range for groundwater dynamic regulation.

[0130] Reference for the relationship between groundwater pressure P, drainage per unit time Q, and ground deformation F borne by underground engineering structures Figure 9 There are three sets of corresponding relationships among the three key parameters: a negative correlation between P and Q, a negative correlation between PF and Q, and a positive correlation between Q and F. These three key parameters and their three sets of correlations together form a multidimensional constraint on groundwater regulation, and the corresponding groundwater regulation targets are determined as follows.

[0131] 1. Determine the maximum limiting water pressure P that the underground engineering structure can withstand. lim

[0132] At different stages of underground engineering design and operation and maintenance, P lim The engineering significance and value determination methods differ for P at each stage. This application provides P for each stage. lim Method for determining:

[0133] (1) Design phase

[0134] The greater the water pressure, the greater the structural bearing capacity required to resist the corresponding water pressure, which ultimately leads to improvements in underground engineering materials, equipment, and processes, resulting in increased costs.

[0135] The maximum limiting water pressure P that underground space structures can withstand lim It can be expressed as cost P zj Functions:

[0136] (6)

[0137] During the design phase, the cost P zj It is a key indicator for decision-making in underground engineering construction. In the allowable cost P... zj Within the specified range, multiple sets of P are calculated using a digital twin analysis model of underground engineering structures (see step 1 above). lim ~P zj The combination of these factors provides a basis for underground engineering construction decisions, thereby determining the maximum limiting water pressure P that the structure can withstand. lim .

[0138] (2) Operation and maintenance phase

[0139] The structure has been completed during the operation and maintenance phase, and can withstand a maximum water pressure P. lim It has been fixed.

[0140] Considering the safety margin requirements of the project, the maximum water pressure borne by the structure during the operation phase can be corrected to P according to formula (7). lim ':

[0141] (7)

[0142] Wherein, γ is the safety factor, which can be determined according to existing underground engineering technical standards.

[0143] (3) Calculate P lim Corresponding displacement Q P Stratigraphic Deformation F P

[0144] P was calculated using a digital twin analysis model of the underground engineering structure. lim Corresponding displacement Q P Stratigraphic Deformation F P .

[0145] 2. Admissible deformation F of the formation lim Determination method

[0146] Stratigraphic allowable deformation F lim For a series of control points (reference) Figure 8 The parameter sequence consists of monitored deformation values. Each deformation control value in the sequence can be determined according to the corresponding deformation control technical standards for the existing building or structure to which it belongs.

[0147] F was calculated using a digital twin analysis model of the underground engineering structure. lim The corresponding water pressure P F Displacement Q F .

[0148] 3. Environmentally permissible drainage volume Q lim Determination method

[0149] Based on the analysis of groundwater movement and site-related deformation, and considering the constraints of local policies and regulations, the maximum allowable drainage volume for the construction environment is determined as the boundary drainage volume Q. lim .

[0150] Q is calculated using a digital twin analysis model of the underground engineering structure. lim The corresponding water pressure P Q Stratigraphic Deformation F Q .

[0151] 4. Methods for determining the target range of regulation

[0152] refer to Figure 9 P lim This represents one extreme state of the control target range; while the other extreme state P of the control target... min It is then determined by the following formula.

[0153] (8)

[0154] That is, Q lim F lim The corresponding saturation state determines another extreme state of the control target range.

[0155] In (P) min ~P lim Any combination of PQF within the range satisfies the control target requirements.

[0156] Step 3: Based on the digital twin analysis model and the measured water pressure-drainage-formation deformation data, the groundwater drainage and water pressure are dynamically controlled by the water control and pressure regulating valve matrix, so that the water pressure-drainage-formation deformation parameters are dynamically maintained within the control target range.

[0157] This application proposes a waterproofing and drainage system consisting of "grouting curtain ring - waterproof layer - drainage blind pipe - water pressure sensor - water control and pressure regulating valve", referring to... Figure 4 and Figure 5 .

[0158] The aforementioned waterproofing and drainage system consists of three main parts: a waterproofing subsystem, a drainage subsystem, and a control subsystem.

[0159] 1. Waterproofing Subsystem

[0160] Grouting curtain ring: A grouting curtain ring constructed around the structure through methods such as pre-grouting. In high-water-pressure, water-rich underground spaces, it is difficult to achieve complete water stoppage with just a grouting curtain ring, but it can significantly reduce the permeability coefficient of the surrounding strata, thereby reducing the amount of groundwater seepage and improving the overall environment for groundwater movement.

[0161] Waterproof layer: A layer of waterproof material laid on the outer surface of the structure. By setting up a waterproof layer, the waterproofing capacity of non-drainage paths is enhanced (the underground structure concrete itself has a certain waterproofing capacity), allowing groundwater to be discharged according to the drainage subsystem path set by the user.

[0162] 2. Drainage Subsystem

[0163] Drainage blind pipes: These are distributed along the longitudinal spacing S of the underground structure to collect groundwater seeping through the strata and grouting curtain ring. This application assigns a number (numerical number) to each drainage blind pipe and records it in the feed-through subsystem.

[0164] Drainage holes: These are distributed on the blind drainage pipes. The opening and closing of the drainage holes are controlled by water-regulating valves to control the drainage volume, thereby controlling the water pressure on the underground structure. This application numbers each drainage hole using the following format: blind pipe number + letter. For example, the second drainage hole of the i-th blind pipe is numbered "iB". (See reference...) Figure 5 .

[0165] 3. Feed control subsystem

[0166] Water pressure sensor: installed at the center of 4 adjacent drainage holes and / or the middle of 2 adjacent drainage holes to measure the external water pressure borne by the underground engineering structure in real time, see step 1 above for details.

[0167] Water control and pressure regulating valve: It is set at the drain hole and has two functions: (1) controlling the opening and closing of the drain hole, thereby adjusting the drainage volume and water pressure, and realizing the dynamic balance of PQF within the allowable range; (2) setting a drainage volume sensor to record the amount of groundwater discharged by each open pressure relief hole.

[0168] Dynamic Feedback Control Center: This center senses groundwater pressure and drainage volume through sensors, and then... Figure 9 The PQF relationship judgment structure shown can bear the PQF balance combination, and the groundwater dynamic feed control is carried out by uniformly controlling the opening and closing matrix of the drainage hole (see step 1 above).

[0169] An embodiment of this application also provides a groundwater digital twin dynamic feed control system capable of implementing the groundwater digital twin dynamic feed control method described in any of the foregoing claims. This system may specifically include the following components.

[0170] The waterproofing subsystem includes a grouting curtain ring installed around the deep-ground engineering structure and a waterproofing layer laid on the outer surface of the deep-ground engineering structure.

[0171] The drainage subsystem includes blind drainage pipes distributed longitudinally along the deep-ground engineering structure and drain holes installed on them.

[0172] The control subsystem (feedback subsystem) includes a water pressure sensor, a water control and pressure regulating valve, and a dynamic feedback control center. The water pressure sensor is arranged at a preset key position between the drain holes, the water control and pressure regulating valve is located at the drain hole, and the dynamic feedback control center controls the opening and closing of the water control and pressure regulating valve based on a digital twin analysis model and the control target range.

[0173] The embodiments of the groundwater digital twin dynamic feed control system and the groundwater digital twin dynamic feed control method can be referred to each other in terms of technical details and corresponding technical effects, and will not be repeated here.

[0174] Overall, the technical advantages of this application compared to the prior art include:

[0175] (1) It breaks through the limitations of existing technologies in strict waterproofing and complete drainage, solves the key contradiction that “strict waterproofing technology makes the structure difficult to bear, while complete drainage seriously affects the safety of geology, buildings and personnel”, greatly improves the feasibility of developing and utilizing underground spaces such as deep underground spaces in cities, and overcomes a key technical obstacle to the development of underground spaces in various high water pressure and limited discharge environments.

[0176] (2) An innovative deep underground space drainage system with dynamic feed control of water pressure P-drainage Q-stratum deformation F has been realized, breaking through the existing technical limitations of existing underground space structure drainage technology which only exists in a single state and cannot be controlled.

[0177] (3) Through the water control and pressure regulating valve matrix, the multi-level and gradual control of groundwater pressure P, drainage volume Q and stratum deformation F is realized.

[0178] (4) It supports the dynamic control of groundwater under complex groundwater conditions such as seasonal and cyclical changes in groundwater. It not only has outstanding technical advantages in high water pressure and limited discharge strata, but also provides effective support for disaster prevention and mitigation of underground space structures.

[0179] (5) A parameterized numerical analysis model that can be rapidly iterated was constructed, and a digital twin system combining soft and hard and virtual and real mapping was established. Digital twin feed control of groundwater under multidimensional constraints was realized, providing a technical foundation for engineering design, construction and operation and maintenance, and supporting the improvement of the intelligent level of deep underground space development and utilization.

[0180] Based on the same inventive concept, embodiments of this application also provide an electronic device. Figure 10 This is a structural block diagram of an electronic device provided in an embodiment of this application. Figure 10 As shown in the embodiments of this application, an electronic device includes: one or more processors 101, a memory 102, and one or more I / O interfaces 103. The memory 102 stores one or more programs, which, when executed by the one or more processors, enable the one or more processors to implement any of the groundwater digital twin dynamic feed control methods described in the above embodiments; the one or more I / O interfaces 103 are connected between the processor and the memory, configured to enable information interaction between the processor and the memory.

[0181] The processor 101 is a device with data processing capabilities, including but not limited to a central processing unit (CPU); the memory 102 is a device with data storage capabilities, including but not limited to random access memory (RAM, more specifically SDRAM, DDR, etc.), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), and flash memory (FLASH); the I / O interface (read / write interface) 103 is connected between the processor 101 and the memory 102, and can realize information interaction between the processor 101 and the memory 102, including but not limited to a data bus (Bus).

[0182] In some embodiments, the processor 101, memory 102, and I / O interface 103 are interconnected via bus 104, and thus connected to other components of the computing device.

[0183] In some embodiments, the one or more processors 101 include a field-programmable gate array.

[0184] This application also provides a computer-readable medium. The computer-readable medium stores a computer program, which, when executed by a processor, implements the steps of any of the groundwater digital twin dynamic feed control methods described in the above embodiments. The computer-readable storage medium can be volatile or non-volatile.

[0185] This application also provides a computer program product, including computer-readable code, or a non-volatile computer-readable storage medium carrying computer-readable code. When the computer-readable code is run in the processor of an electronic device, the processor in the electronic device executes the above-described groundwater digital twin dynamic feed control method.

[0186] Those skilled in the art will understand that all or some of the steps, systems, and apparatuses disclosed above, and their functional modules / units, can be implemented as software, firmware, hardware, or suitable combinations thereof. In hardware implementations, the division between functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, a physical component may have multiple functions, or a function or step may be performed collaboratively by several physical components. Some or all physical components may be implemented as software executed by a processor, such as a central processing unit, digital signal processor, or microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit (ASIC). Such software can be distributed on a computer-readable storage medium, which may include computer storage media (or non-transitory media) and communication media (or transient media).

[0187] As is known to those skilled in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable program instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM), static random access memory (SRAM), flash memory or other memory technologies, portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD) or other optical disc storage, magnetic cartridges, magnetic tape, disk storage or other magnetic storage devices, or any other medium that can be used to store desired information and is accessible to a computer. Furthermore, it is known to those skilled in the art that communication media typically contain computer-readable program instructions, data structures, program modules, or other data in modulated data signals such as carrier waves or other transmission mechanisms, and may include any information delivery medium.

[0188] The computer-readable program instructions described herein can be downloaded from computer-readable storage media to various computing / processing devices, or downloaded via a network, such as the Internet, local area network, wide area network, and / or wireless network, to an external computer or external storage device. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers, and / or edge servers. A network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards them to the computer-readable storage media in the respective computing / processing device.

[0189] The computer program instructions used to perform the operations of this application may be assembly instructions, instruction set architecture (ISA) instructions, machine instructions, machine-dependent instructions, microcode, firmware instructions, status setting data, or source code or object code written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Smalltalk, C++, etc., and conventional procedural programming languages ​​such as the "C" language or similar programming languages. The computer-readable program instructions may be executed entirely on the user's computer, partially on the user's computer, as a standalone software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network—including a local area network (LAN) or a wide area network (WAN)—or may be connected to an external computer (e.g., via the Internet using an Internet service provider). In some embodiments, electronic circuits, such as programmable logic circuits, field-programmable gate arrays (FPGAs), or programmable logic arrays (PLAs), are personalized by utilizing the status information of the computer-readable program instructions. These electronic circuits can execute the computer-readable program instructions to implement various aspects of this application.

[0190] The computer program product described herein can be implemented specifically through hardware, software, or a combination thereof. In one alternative embodiment, the computer program product is specifically embodied in a computer storage medium; in another alternative embodiment, the computer program product is specifically embodied in a software product, such as a software development kit (SDK), etc.

[0191] Various aspects of this application are described herein with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It should be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer-readable program instructions.

[0192] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing apparatus to produce a machine such that, when executed by the processor of the computer or other programmable data processing apparatus, they create means for implementing the functions / actions specified in one or more blocks of the flowchart and / or block diagram. These computer-readable program instructions can also be stored in a computer-readable storage medium that causes a computer, programmable data processing apparatus, and / or other device to operate in a particular manner; thus, the computer-readable medium storing the instructions comprises an article of manufacture that includes instructions for implementing aspects of the functions / actions specified in one or more blocks of the flowchart and / or block diagram.

[0193] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operational steps to be performed on the computer, other programmable data processing apparatus, or other device to produce a computer-implemented process, thereby causing the instructions executed on the computer, other programmable data processing apparatus, or other device to perform the functions / actions specified in one or more boxes of a flowchart and / or block diagram.

[0194] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to various embodiments of this application. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of an instruction containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than those marked in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. It should also be noted that each block in the block diagrams and / or flowcharts, and combinations of blocks in the block diagrams and / or flowcharts, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

[0195] Exemplary embodiments have been disclosed herein, and while specific terminology has been used, it is used and should be interpreted only in a general illustrative sense and is not intended to be limiting. In some embodiments, it will be apparent to those skilled in the art that features, characteristics, and / or elements described in conjunction with particular embodiments may be used alone, or in combination with features, characteristics, and / or elements described in conjunction with other embodiments, unless otherwise expressly indicated. Therefore, those skilled in the art will understand that various changes in form and detail may be made without departing from the scope of this application as set forth by the appended claims.

Claims

1. A method for dynamic feedback control of groundwater digital twinning, characterized in that, The method comprises the following steps: constructing a digital twin analysis model of a deep geotechnical engineering structure under the multi-dimensional constraints of parameterized high water pressure, limited drainage and controlled settlement; determining a water pressure-drainage-stratum deformation relationship curve and a control target interval of groundwater dynamics regulation; determining the control target interval comprises: Determining the maximum boundary water pressure that a geotechnical structure can bear P lim , a formation allowable deformation amount F lim and an environmental allowable discharge amount Q lim ; acquiring, by the digital twin analysis model P lim corresponding to the water pressure Q P and the formation deformation variable F P , F lim corresponding to the water pressure P F and the displacement Q F , Q lim corresponding to the water pressure P Q and the formation deformation variable F Q ; with P lim max( P Q , P F ) as the lower limit P min , the regulation target interval is determined as [ P min , P lim ] based on the digital twin analysis model and the measured water pressure-drainage-stratum deformation data, dynamically regulating the drainage and water pressure of groundwater by a water control pressure regulating valve matrix, so that the water pressure-drainage-stratum deformation parameters are dynamically maintained within the control target interval.

2. The groundwater digital twin dynamic feedback control method of claim 1, wherein, constructing the digital twin analysis model comprises: constructing a geological model based on hydrogeological drilling information, and generating a deep geotechnical engineering structure model by a parameterization method; wherein the deep geotechnical engineering structure model supports a circular or multi-center circular cross section; constructing a waterproof and drainage system model based on seepage motion control, and mapping the actual waterproof and drainage behavior by setting the boundary conditions of the water permeable interface, the grouting curtain circle permeability coefficient and / or the drainage hole.

3. The groundwater digital twin dynamic feedback control method of claim 1, wherein, The dynamic regulation comprises: real-time acquisition of water pressure-drainage-stratum deformation data; when the measured water pressure-drainage-stratum deformation data exceeds the control target interval or presents an adverse trend, starting the digital twin analysis model for iterative prediction to find a drainage hole opening and closing scheme that adapts to the control target interval; controlling the water control pressure regulating valve matrix to adjust the opening and closing state of the drainage hole according to the drainage hole opening and closing scheme that adapts to the control target interval, so as to realize gradual regulation of water pressure and drainage.

4. The groundwater digital twin dynamic feedback control method of claim 3, wherein, The tool for collecting water pressure-drainage-stratum deformation data comprises a water pressure sensor; the water pressure sensor is arranged at the center position of adjacent four drainage holes and / or at the intermediate position of adjacent two drainage holes, and is used for monitoring the maximum water pressure on the outer surface of the deep geotechnical engineering structure.

5. The groundwater digital twin dynamic feedback control method of claim 1, wherein, The water control pressure regulating valve matrix is composed of a plurality of water control pressure regulating valves, each of which controls the opening and closing of a drainage hole, and realizes multi-stage and gradual regulation of the drainage by unified control.

6. A groundwater digital twin dynamic feedback control system capable of implementing the method of any one of claims 1-5, characterized in that, The method comprises the following steps: a waterproof subsystem comprising a grouting curtain circle arranged around the deep geotechnical engineering structure and a waterproof layer laid on the outer surface of the deep geotechnical engineering structure; a drainage subsystem comprising a drainage blind pipe distributed along the longitudinal direction of the deep geotechnical engineering structure and a drainage hole arranged thereon; a control subsystem comprising a water pressure sensor, a water control pressure regulating valve and a dynamic feedback control hub; the water pressure sensor is arranged at a pre-set key position between the drainage holes, the water control pressure regulating valve is arranged at the drainage hole, and the dynamic feedback control hub controls the opening and closing of the water control pressure regulating valve based on the digital twin analysis model and the control target interval.

7. An electronic device, comprising: The method comprises the following steps: one or more processors; a memory for storing one or more programs; when the one or more programs are executed by the one or more processors, the one or more processors can implement the steps in the groundwater digital twin dynamic feedback control method according to any one of claims 1 to 5.

8. A computer readable medium having stored thereon a computer program, characterized in that The computer program can implement the steps in the groundwater digital twin dynamic feedback control method according to any one of claims 1 to 5 when executed by a processor.

Images