Environmental micro-deformation analysis method and system for double-side extension of operating subway

Abstract

In order to improve the monitoring accuracy and reliability of environmental micro-deformation during the double-sided extension of an operating subway, the present invention proposes an environmental micro-deformation analysis method and system for the double-sided extension of an operating subway, which relates to the field of underground structure engineering technology. In view of the limitations of single-point modeling and prediction methods in the prior art, the present method aims to obtain a more comprehensive data set through multi-point monitoring to more accurately evaluate the deformation of the underground structure. Determine the location of the main measuring point of the underground structure and select the surrounding adjacent measuring points to collect the deformation data of these measuring points. By correcting the deformation data of the central measuring point and the adjacent measuring points, the comprehensive improvement value of the underground structure is calculated, and a trend analysis is performed on it, based on which a corresponding response strategy is formulated. The present method can effectively reduce the impact of errors and outliers, improve the reliability and accuracy of the data, and provide strong technical support for the safe construction of the double-sided extension project of the subway.

Description

Technical Field

[0001] The present application relates to the technical field of underground structure engineering, and in particular to an environmental micro-deformation analysis method and system for the double-sided extension of an operating subway. Background Art

[0002] Large subway stations are an important part of urban transportation infrastructure. When constructing other underground structures or buildings on both sides of large subway stations during operation, complex civil engineering technology and geological conditions are involved. During operation, due to the excavation on both sides of the subway station and the vibration caused by train operation, groundwater level changes, soil settlement and other factors, the subway station may undergo micro-deformation, which poses a potential threat to the safety of subway stations and passenger comfort. The traditional deformation monitoring and processing methods currently used are usually limited to single-point modeling and single-point prediction, and do not make full use of the correlation between monitoring points. It is a local modeling and deformation law analysis. In real life, the deformation development of any monitoring point does not exist in isolation. When it is affected by other monitoring points, it also affects the deformation of other monitoring points. Therefore, the mutual interference between monitoring points should be used as an influencing factor of the prediction model from the perspective of the deformation observation system. Therefore, establishing a reliable and identifiable deformation analysis and prediction model for deformable bodies is of great significance for timely and accurately grasping the deformation development trend of the deformable body, taking all measures to prevent the occurrence of disasters, and minimizing losses. From a more profound perspective, a reasonable and accurate deformation prediction model can not only understand the deformation trend of the deformable body, but also provide sufficient protection for human material property and life property. Summary of the invention

[0003] The purpose of this application is to provide an environmental micro-deformation analysis method and system for the double-sided extension of an operating subway.

[0004] On the one hand, according to the embodiment of the present application, a method and system for analyzing environmental micro-deformation of two-side extension of an operating subway are proposed, comprising the following steps:

[0005] Step 1, obtaining the main measuring point position of the underground structure;

[0006] Step 2, according to the main measuring point position, determine the positions of adjacent measuring points around the main measuring point position;

[0007] Step 3, obtaining deformation data of the main measuring point position and deformation data of the adjacent measuring point position;

[0008] Step 4, correcting the deformation data of the main measuring point and the deformation data of the adjacent measuring point to obtain a comprehensive improvement value of the underground structure;

[0009] Step 5: Conduct trend analysis on the comprehensive improvement value of underground structures and formulate response strategies.

[0010] According to one aspect of an embodiment of the present application, the deformation data of the main measuring point position and the deformation data of the adjacent measuring point position are corrected to obtain a comprehensive improvement value of the underground structure, which specifically includes the following steps:

[0011] Step 41, calculating the connection distance between each adjacent measuring point position and the main measuring point position;

[0012] Step 42, determining the proximity weight of each adjacent measuring point position relative to the main measuring point position according to the connection distance;

[0013] Step 43, based on the neighboring weights of the neighboring measuring point positions relative to the main measuring point position and the deformation data of the neighboring measuring point positions, the deformation data of the neighboring measuring point positions are corrected to obtain corrected data of the neighboring measuring point positions;

[0014] Step 44, determining the main weight of the main measuring point position according to the neighboring weight;

[0015] Step 45, correcting the deformation data of the main measuring point position according to the main weight and the deformation data of the main measuring point position to obtain the corrected data of the main measuring point position;

[0016] Step 46, obtaining a comprehensive improvement value of the underground structure according to the neighboring weight, the connection distance, the neighboring measuring point position correction data, and the main measuring point position correction data.

[0017] According to one aspect of the embodiment of the present application, the neighbor weight is obtained by a standard Gaussian function;

[0018] The standard Gaussian function is:

[0019] ;

[0020] In the above formula, Indicates the neighboring weight of the nth neighboring measurement point relative to the main measurement point. represents the position of the nth adjacent measuring point, Indicates the main measuring point position, Indicates the connection distance between the nth adjacent measuring point and the main measuring point. Represents the comprehensive adjustment coefficient.

[0021] According to one aspect of the embodiment of the present application, the master weight is obtained by weighted average of each neighboring weight.

[0022] According to one aspect of the embodiment of the present application, the calculation formula of the comprehensive improvement value is:

[0023] ;

[0024] In the above formula, Y represents the comprehensive improvement value, Indicates the position correction data of the nth adjacent measuring point, It represents the correction data of the main measuring point position, and m represents the total number of adjacent measuring point positions.

[0025] According to one aspect of an embodiment of the present application, the underground structure is divided into hard rock geological conditions and soft soil geological conditions according to the physical and mechanical properties of the underground structure, and the hard rock geological conditions and soft soil geological conditions are combined into mixed geological conditions.

[0026] According to one aspect of the embodiment of the present application, the comprehensive adjustment coefficient is calculated according to the mixed geological conditions, specifically:

[0027] Obtain a first adjustment coefficient of the underground structure under hard rock geological conditions, determine a magnification factor of the first adjustment coefficient based on the first adjustment coefficient, determine a second adjustment coefficient of the underground structure under soft soil geological conditions based on the first adjustment coefficient and the magnification factor, and determine a comprehensive adjustment coefficient based on the first adjustment coefficient and the second adjustment coefficient.

[0028] According to one aspect of an embodiment of the present application, obtaining a first adjustment coefficient under hard rock geological conditions for an underground structure specifically includes: obtaining rock samples of the underground structure under hard rock geological conditions, and obtaining the hardness coefficient of the rock sample, and taking the average of the hardness coefficients of the rock sample as the first adjustment coefficient.

[0029] According to one aspect of the embodiment of the present application, the calculation formula of the second adjustment coefficient is:

[0030] ;

[0031] In the formula, represents the second adjustment coefficient, represents the amplification factor of the first adjustment factor, represents the first adjustment coefficient;

[0032] The process of obtaining the magnification factor of the first adjustment factor is as follows: obtaining the unconfined compressive strength, porosity, and permeability of the underground structure under soft soil geological conditions, and obtaining the magnification factor of the first adjustment factor according to the unconfined compressive strength, porosity, and permeability;

[0033] The calculation formula of the amplification factor of the first adjustment factor is:

[0034] ;

[0035] Among them, U represents the unconfined compressive strength of the underground structure, V represents the porosity ratio of the underground structure, P represents the permeability coefficient of the underground structure, and A, B, C, D, E, F, G, and H represent adjustment factors, respectively.

[0036] According to one aspect of an embodiment of the present application, determining a comprehensive adjustment coefficient according to the first adjustment coefficient and the second adjustment coefficient specifically includes:

[0037] determining a first weighting coefficient of a first adjustment coefficient based on a probability of a rock sample being contained within the underground structure;

[0038] determining a second weighting factor for a second adjustment factor based on a probability of a soft soil sample being included in the underground structure;

[0039] A comprehensive adjustment coefficient is calculated according to the first adjustment coefficient, the first weight coefficient, the second adjustment coefficient, and the second weight coefficient.

[0040] In summary, the beneficial technical effects of this application are:

[0041] By obtaining the main measuring point position, determining the adjacent measuring point position according to the main measuring point position, obtaining the deformation data of the main measuring point position and the adjacent measuring point position, and correcting the deformation data of the main measuring point position and the adjacent measuring point position, a comprehensive improvement value of the underground structure is obtained; a trend analysis is performed on the comprehensive improvement value of the underground structure and a response strategy is formulated. Compared with the prior art, on the one hand, the present invention adopts a multi-point monitoring method of simultaneously monitoring the main measuring point position and the adjacent measuring point position to obtain a more comprehensive data set, which helps to more accurately evaluate the deformation of the underground structure; on the other hand, by correcting the deformation data of the main measuring point position and the adjacent measuring point position to calculate the comprehensive improvement value, the influence of errors and outliers is reduced, and the reliability and accuracy of the data are improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 It is a schematic diagram of the underground structure in the environmental micro-deformation analysis method for the double-sided extension of the operating subway in this application;

[0043] Figure 2 This is a flow chart of the environmental micro-deformation analysis method for the double-sided extension of the operating subway in this application;

[0044] Figure 3 This is the structural diagram of the environmental micro-deformation analysis system for the double-sided expansion of the subway in this application. DETAILED DESCRIPTION

[0045] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0047] In the embodiments of the present application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width and other dimensions of various components in the embodiments of the present application shown in the drawings, as well as the overall thickness, length, width and other dimensions of the integrated device are only exemplary descriptions and should not constitute any limitation to the present application.

[0048] The term “plurality” used in this application refers to two or more (including two).

[0049] On the one hand, the following combination Figure 1 to Figure 2 The underground structure micro-deformation analysis method according to the embodiment of the present application is described in detail.

[0050] See attached Figure 1 , is a schematic diagram of the underground structure of a large subway station, in which Figure 1 Part A is a two-dimensional schematic diagram of the underground structure. The blue circle X0 represents the main measuring point of the underground structure, and the red circles X1, X2, and X n Represents the adjacent measuring point positions around the main measuring point, W0, W1, W2, W nDeformation data are obtained from different positions at the adjacent measuring point and the main measuring point. In the actual analysis of underground structures in this embodiment, it is necessary to obtain deformation data of each deformation measuring point for analysis. Figure 1 The four deformation measurement points marked in part A are only for reference. Figure 1 Part B is a three-dimensional stereogram of the underground structure, which places the main measuring point position, the adjacent measuring point position, and the deformation measuring point in a three-dimensional space to intuitively reflect the relative position in the underground structure. Figure 1 The deformation data of each deformation measurement point in the model are collected and the comprehensive improvement value of the underground structure is calculated to realize micro-deformation analysis.

[0051] See attached Figure 2 The environmental micro-deformation analysis method for the double-sided extension of the operating subway includes the following steps:

[0052] Step 1: Obtain the main measuring point location of the underground structure.

[0053] First, a three-dimensional model of the underground structure is constructed, and the finite element analysis software is used to perform structural analysis, find out the parts of the structure that are subject to the greatest force, predict the deformation of the structure under different working conditions, identify deformation-sensitive areas, and evaluate the stability of the structure. The part with the greatest structural stability is taken as the main measuring point position, and a displacement sensor is installed at the selected main measuring point position to record the precise coordinate information of the main measuring point position. The coordinates of the main measuring point position are (X0, Y0).

[0054] Among them, the finite element analysis software performs structural analysis to find out the parts of the structure that are subject to the greatest force, predict the deformation of the structure under different working conditions, identify deformation-sensitive areas, and evaluate the stability of the structure. This process belongs to the existing technology and will not be described in detail.

[0055] Step 2: According to the main measuring point position, determine the positions of adjacent measuring points around the main measuring point position.

[0056] According to the main measuring point location and the characteristics of the parts at the main measuring point location, the layout principle of the adjacent measuring point location is determined: around the main measuring point location, appropriately arrange adjacent measuring points near key parts, give priority to setting adjacent measuring points at key connections and corners of the structure, and maintain a certain density of measuring points to ensure that the changes in the structure can be fully reflected. Displacement sensors or other monitoring equipment are installed at the selected adjacent measuring point locations to record the precise coordinate information of the adjacent measuring point locations. The coordinates of the adjacent measuring point locations are (X n , Y n ).

[0057] Step 3: Obtain deformation data of the main measuring point and deformation data of the adjacent measuring point.

[0058] Multiple pressure sensors are installed at different depths near the measuring point to capture deformation characteristics at different levels. For the main measuring point, sensors are installed at one depth to monitor the deformation of key locations, and the deformation data of the time series of the pressure sensors are collected regularly.

[0059] Step 4: Correct the deformation data of the main measuring point and the deformation data of the adjacent measuring point to obtain a comprehensive improvement value of the underground structure.

[0060] The goal of this embodiment is to correct the deformation data of the main measuring point and the deformation data of the adjacent measuring point to obtain a more accurate comprehensive improvement value. Specifically, the following steps are included:

[0061] Step 41, calculating the connection distance between each adjacent measuring point position and the main measuring point position.

[0062] Based on the coordinates of the main measuring point (X0, Y0) and the coordinates of the adjacent measuring points (X n , Y n ), using any one of the existing methods such as Euclidean distance, Manhattan distance, Chebyshev distance, and Mahlbins distance, to calculate the connection distance between each adjacent measuring point and the main measuring point.

[0063] Step 42: Determine the proximity weight of each neighboring measuring point position relative to the main measuring point position according to the connection distance.

[0064] The neighboring weight of each neighboring measuring point relative to the main measuring point is determined according to the connection distance, so that the neighboring weight distribution is more reasonable. The neighboring measuring point position closer to the main measuring point position has a greater influence in the process of calculating the comprehensive improvement value, while the neighboring measuring point position farther from the main measuring point position has a smaller influence in the process of calculating the comprehensive improvement value. In the process of calculating the comprehensive improvement value, this design method helps to reduce the interference caused by the neighboring measuring point position farther away and improve the accuracy of the correction result.

[0065] Based on the above description, the standard Gaussian function is used to allocate weights according to the connection distance between the neighboring measuring point position and the main measuring point position, satisfying the following conditions: the closer the neighboring measuring point position is to the main measuring point position, the greater the weight value is, and the farther the neighboring measuring point position is from the main measuring point position, the smaller the weight value is.

[0066] The standard Gaussian function is:

[0067] ;

[0068] In the above formula, Indicates the neighboring weight of the nth neighboring measurement point relative to the main measurement point. represents the position of the nth adjacent measuring point, Indicates the main measuring point position, Indicates the connection distance between the nth adjacent measuring point and the main measuring point. Represents the comprehensive adjustment coefficient.

[0069] In the process of calculating the comprehensive improvement value or underground structure analysis, the neighboring weighted measuring point position with a larger neighboring weight will have a greater impact on the final result. The advantage of this weight distribution method is that it can ensure that the local information around the main measuring point position is more fully considered, while the information of the farther measuring points is relatively weakened, thereby reducing the influence of noise or irrelevant factors introduced by the distant measuring points and improving the accuracy and reliability of the analysis results.

[0070] Step 43, based on the neighboring weights of the neighboring measuring point positions relative to the main measuring point position and the deformation data of the neighboring measuring point positions, the deformation data of the neighboring measuring point positions are corrected to obtain corrected data of the neighboring measuring point positions.

[0071] The calculation formula for the correction data of the adjacent measuring point position is:

[0072] ;

[0073] Represents the position correction data of the nth adjacent measuring point, Represents the deformation data of the nth adjacent measuring point.

[0074] Step 44, determining the main weight of the main measuring point position according to the neighboring weights.

[0075] The master weight is obtained by taking the weighted average of each neighboring weight. First, the sum of the neighboring weights S of all neighboring measurement points is calculated:

[0076] .

[0077] Next, according to the neighboring weights of the neighboring measurement points To determine the main weight C of the main measuring point position. The main weight can be calculated by weighted average:

[0078] ;

[0079] m represents the total number of adjacent measuring points.

[0080] Step 45, based on the deformation data of the main weight and the main measuring point position, the deformation data of the main measuring point position is corrected to obtain the main measuring point position correction data.

[0081] The calculation formula for the main measuring point position correction data is:

[0082] ;

[0083] in, Indicates the main measuring point position correction data, Deformation data representing the location of the main measuring point.

[0084] Step 46, obtaining a comprehensive improvement value of the underground structure according to the neighboring weight, the connection distance, the neighboring measuring point position correction data, and the main measuring point position correction data.

[0085] The calculation formula of the comprehensive improvement value is:

[0086] ;

[0087] In the above formula, Y represents the comprehensive improvement value.

[0088] According to the physical and mechanical properties of the underground structure, the underground structure is divided into hard rock geological conditions and soft soil geological conditions. The combination of the hard rock geological conditions and the soft soil geological conditions is a mixed geological condition.

[0089] In order to better reflect the physical and mechanical properties of the underground structure, this embodiment divides the underground structure into two conditions: hard rock geological conditions and soft soil geological conditions, and combines them into mixed geological conditions. For these two different geological conditions, the first adjustment coefficient and the second adjustment coefficient are calculated respectively, and finally the two coefficients are combined to obtain the comprehensive adjustment coefficient. Because the deformation characteristics under hard rock geological conditions and soft soil geological conditions are significantly different, different adjustment coefficients are needed to more accurately describe the deformation behavior of the underground structure.

[0090] Hard rock geological conditions have higher strength and lower permeability, which means that deformation is smaller and more evenly distributed. Therefore, a smaller first adjustment coefficient is used to calculate the comprehensive improvement value. Soft soil geological conditions have lower strength and higher permeability, which leads to larger deformation and uneven distribution, and are more affected by environmental factors. Therefore, a larger second adjustment coefficient is used to reflect the impact of soft soil deformation.

[0091] Furthermore, the comprehensive adjustment coefficient is calculated according to the mixed geological conditions, specifically:

[0092] Obtain the first adjustment coefficient of the underground structure under hard rock geological conditions, determine the amplification coefficient, determine the second adjustment coefficient of the underground structure under soft soil geological conditions based on the first adjustment coefficient and the amplification coefficient, and determine the comprehensive adjustment coefficient based on the first adjustment coefficient and the second adjustment coefficient.

[0093] Different adjustment coefficients are selected for different geological conditions to obtain a comprehensive adjustment coefficient, which can more finely characterize the deformation behavior of the underground structure and more accurately evaluate the stability of the underground structure.

[0094] Obtaining the first adjustment coefficient under the underground structure being a hard rock geological condition specifically includes: obtaining rock samples of the underground structure under the hard rock geological condition, and obtaining the hardness coefficient of the rock sample, and taking the average value of the hardness coefficient of the rock sample as the first adjustment coefficient.

[0095] The hardness coefficient can reflect the ability of rock to resist external forces. Since the hardness coefficient is an important indicator for measuring the performance of rock materials, the mean value of the hardness coefficient is selected as the first adjustment coefficient in this embodiment. The mean value can represent the overall deformation characteristics under hard rock geological conditions and can more accurately and scientifically describe the deformation behavior under hard rock geological conditions.

[0096] The second adjustment coefficient is determined by the first adjustment coefficient and the magnification coefficient. The magnification coefficient is used to adjust the second adjustment coefficient so as to use a larger second adjustment coefficient to reflect the influence of soft soil deformation under soft soil geological conditions.

[0097] The calculation formula for the second adjustment coefficient is:

[0098] ;

[0099] In the formula, represents the second adjustment coefficient, represents the magnification factor, represents the first adjustment coefficient;

[0100] The process of obtaining the magnification coefficient is as follows: obtaining the unconfined compressive strength, porosity, and permeability of the underground structure under soft soil geological conditions, and obtaining the magnification coefficient of the first adjustment coefficient according to the unconfined compressive strength, porosity, and permeability;

[0101] The calculation formula of the amplification factor of the first adjustment factor is:

[0102] ;

[0103] Among them, U represents the unconfined compressive strength of the underground structure, V represents the porosity ratio of the underground structure, P represents the permeability coefficient of the underground structure, and A, B, C, D, E, F, G, and H represent adjustment factors, respectively.

[0104] , which means that as the unconfined compressive strength increases, the amplification factor Gradually decrease to reflect that stronger soft soil can bear greater loads with less deformation. B and C are adjustment coefficients used to control the influence of unconfined compressive strength on the amplification factor. They are determined according to the range of unconfined compressive strength under actual geological conditions. If the range of unconfined compressive strength is large, B and C are set to be smaller, and vice versa. Preferably, B=0.1 and C=10.

[0105] , indicating that as the porosity increases, the magnification factor gradually increases, reflecting that the larger the porosity, the easier it is for the soft soil to deform. D and E are adjustment coefficients, which are used to adjust the degree of influence of the porosity on the magnification factor and are determined according to the standard range of the porosity. If the porosity range is large, D can be set smaller and E can be set larger. Preferably, D=0.5 and E=2.

[0106] , indicating that as the permeability increases, the magnification factor gradually increases, reflecting that the larger the permeability, the easier it is for the soft soil to deform. F, G, and H are adjustment coefficients used to adjust the degree of influence of the permeability on the magnification, which are determined according to the standard range of the permeability. If the permeability range is large, F can be set to a smaller value, while G can be set to a larger value. H is determined according to the degree of influence of the permeability on the magnification. If the permeability has a greater influence on the magnification, H can be set to a larger value. Preferably, the permeability range is 1×10 -6 to 1×10 -4 cm / s, F=0.1, G=0.01, H=1.5.

[0107] Determine the comprehensive adjustment coefficient according to the first adjustment coefficient and the second adjustment coefficient, specifically including:

[0108] A first weighting coefficient of the first adjustment coefficient is determined based on a probability of the rock sample being contained within the underground structure.

[0109] The rock sample probability indicates the proportion of rock in the underground structure. It is obtained through field surveys, drilling or other geological exploration methods. The rock sample probability is converted into a decimal form as the first weight coefficient P r .

[0110] A second weight coefficient of the second adjustment coefficient is determined based on the probability of the soft soil sample being included in the underground structure.

[0111] The soft soil sample probability indicates the proportion of soft soil in the underground structure. Similarly, this proportion can be obtained through field surveys, drilling or other geological exploration methods. The soft soil sample probability is converted into a decimal form as the second weight coefficient P s .

[0112] A comprehensive adjustment coefficient is calculated according to the first adjustment coefficient, the first weight coefficient, the second adjustment coefficient, and the second weight coefficient.

[0113] .

[0114] Step 5: Conduct trend analysis on the comprehensive improvement value of underground structures and formulate response strategies.

[0115] First, the comprehensive improvement values ​​over a period of time are collected and a comprehensive improvement value sequence I(t) is formed.

[0116] Next, based on the comprehensive improvement value sequence I(t), a linear regression model is constructed:

[0117] ;

[0118] represents the slope, which represents the growth rate of the comprehensive improvement value over time, and k represents the intercept, which represents the comprehensive improvement value at the initial moment. represents the error term.

[0119] By minimizing the residual sum of squares, the values ​​of q and k are estimated. Then, a graph of the relationship between the comprehensive improvement value and time is plotted to intuitively show the trend of the improvement value.

[0120] According to the results of trend analysis, formulate corresponding response strategies. For example, if the trend analysis shows that the comprehensive improvement value is on an upward trend, it means that there are safety hazards in the underground structure. At this time, monitoring should be strengthened, the frequency of safety inspections should be increased, and reinforcement measures should be considered, such as adding support structures and changing drainage systems. If the trend analysis shows that the comprehensive improvement value is on a downward trend, it means that the condition of the underground structure has improved. At this time, the monitoring intensity should be appropriately reduced, but regular inspections are still required to prevent unexpected situations. If the trend analysis shows that the comprehensive improvement value remains stable, it means that the underground structure is in a relatively stable condition. At this time, the existing monitoring and maintenance plan can be maintained.

[0121] On the other hand, refer to the attached Figure 3 This embodiment also discloses an underground structure micro-deformation analysis system for a large subway station, including the following modules:

[0122] Main measuring point location acquisition module: used to obtain the main measuring point location of the underground structure;

[0123] A neighboring measuring point position determination module: connected to the main measuring point position acquisition module, and used to determine the neighboring measuring point positions around the main measuring point position according to the main measuring point position;

[0124] Deformation data acquisition module: connected to the main measuring point position acquisition module and the adjacent measuring point position determination module, used to acquire the deformation data of the main measuring point position and the deformation data of the adjacent measuring point position;

[0125] Comprehensive improvement value calculation module: connected to the deformation data acquisition module, used to correct the deformation data of the main measuring point position and the deformation data of the adjacent measuring point position to obtain the comprehensive improvement value of the underground structure;

[0126] Strategy formulation module: connected to the comprehensive improvement value calculation module, used to analyze the trend of the comprehensive improvement value of the underground structure and formulate response strategies.

[0127] The above description is only a preferred specific implementation manner of the present application, and is not intended to limit the protection scope of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. The environmental micro-deformation analysis method for the double-sided extension of the operating subway is characterized by: The following steps are involved: Step 1, obtaining the main measuring point position of the underground structure; Step 2, according to the main measuring point position, determine the positions of adjacent measuring points around the main measuring point position; Step 3, obtaining deformation data of the main measuring point position and deformation data of the adjacent measuring point position; Step 4, correcting the deformation data of the main measuring point and the deformation data of the adjacent measuring point to obtain a comprehensive improvement value of the underground structure; Step 41, calculating the connection distance between each adjacent measuring point position and the main measuring point position; Step 42, determining the proximity weight of each adjacent measuring point position relative to the main measuring point position according to the connection distance; Step 43, based on the neighboring weights of the neighboring measuring point positions relative to the main measuring point position and the deformation data of the neighboring measuring point positions, the deformation data of the neighboring measuring point positions are corrected to obtain corrected data of the neighboring measuring point positions; Step 44, determining the main weight of the main measuring point position according to the neighboring weight; Step 45, correcting the deformation data of the main measuring point position according to the main weight and the deformation data of the main measuring point position to obtain the corrected data of the main measuring point position; Step 46, obtaining a comprehensive improvement value of the underground structure according to the neighboring weight, the connection distance, the neighboring measuring point position correction data, and the main measuring point position correction data; Step 5: Conduct trend analysis on the comprehensive improvement value of underground structures and formulate response strategies.

2. The environmental micro-deformation analysis method for the double-sided extension of an operating subway according to claim 1 is characterized in that: The neighbor weight is obtained by a standard Gaussian function; The standard Gaussian function is: ； In the above formula, Indicates the neighboring weight of the nth neighboring measurement point relative to the main measurement point. represents the position of the nth adjacent measuring point, Indicates the main measuring point position, Indicates The connection distance between the adjacent measuring point and the main measuring point, Represents the comprehensive adjustment coefficient.

3. The environmental micro-deformation analysis method for the double-sided extension of an operating subway according to claim 2 is characterized in that: The master weight is obtained by taking the weighted average of each neighboring weight.

4. The environmental micro-deformation analysis method for the double-sided extension of an operating subway according to claim 3 is characterized in that: The calculation formula of the comprehensive improvement value is: ； In the above formula, Y represents the comprehensive improvement value, Indicates the position correction data of the nth adjacent measuring point, It represents the correction data of the main measuring point position, and m represents the total number of adjacent measuring point positions.

5. The environmental micro-deformation analysis method for the double-sided extension of an operating subway according to claim 2 is characterized in that: According to the physical and mechanical properties of the underground structure, the underground structure is divided into hard rock geological conditions and soft soil geological conditions. The combination of the hard rock geological conditions and the soft soil geological conditions is a mixed geological condition.

6. The environmental micro-deformation analysis method for the double-sided extension of an operating subway according to claim 5 is characterized in that: The comprehensive adjustment coefficient is calculated based on mixed geological conditions, specifically: Obtain the first adjustment coefficient of the underground structure under hard rock geological conditions, determine the amplification coefficient, determine the second adjustment coefficient of the underground structure under soft soil geological conditions based on the first adjustment coefficient and the amplification coefficient, and determine the comprehensive adjustment coefficient based on the first adjustment coefficient and the second adjustment coefficient.

7. The environmental micro-deformation analysis method for the double-sided extension of an operating subway according to claim 6 is characterized in that: Obtaining the first adjustment coefficient under the underground structure being a hard rock geological condition specifically includes: obtaining rock samples of the underground structure under the hard rock geological condition, and obtaining the hardness coefficient of the rock sample, and taking the average value of the hardness coefficient of the rock sample as the first adjustment coefficient.

8. The environmental micro-deformation analysis method for the double-sided extension of an operating subway according to claim 6 is characterized by: The calculation formula for the second adjustment coefficient is: ； In the formula, represents the second adjustment coefficient, represents the magnification factor, represents the first adjustment coefficient; The process of obtaining the magnification coefficient is as follows: obtaining the unconfined compressive strength, porosity, and permeability of the underground structure under soft soil geological conditions, and obtaining the magnification coefficient of the first adjustment coefficient according to the unconfined compressive strength, porosity, and permeability; The calculation formula of the amplification factor of the first adjustment factor is: ； Among them, U represents the unconfined compressive strength of the underground structure, V represents the porosity ratio of the underground structure, P represents the permeability coefficient of the underground structure, and A, B, C, D, E, F, G, and H represent adjustment factors, respectively.

9. The environmental micro-deformation analysis method for the double-sided extension of an operating subway according to claim 6 is characterized by: Determine the comprehensive adjustment coefficient according to the first adjustment coefficient and the second adjustment coefficient, specifically including: determining a first weighting coefficient of a first adjustment coefficient based on a probability of a rock sample being contained within the underground structure; determining a second weighting factor for a second adjustment factor based on a probability of a soft soil sample being included in the underground structure; A comprehensive adjustment coefficient is calculated according to the first adjustment coefficient, the first weight coefficient, the second adjustment coefficient, and the second weight coefficient.

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