Red layer soft rock deep cutting arch deformation measuring and calculating method and device

Abstract

The invention discloses a red layer soft rock deep cutting arch deformation measuring and calculating method and device, and the method comprises the steps: dividing a foundation into a plurality of layers from top to bottom according to the natural environment elements of the position where a deep cutting is located; the plurality of layers comprise a first layer, a plurality of middle layers and a last layer from top to bottom; according to the thickness of the first layer and a first preset formula, calculating to obtain an upward arch deformation amount of the first layer; the first preset formula is used for calculating the upward arch deformation amount at any time point according to the thickness of the first layer and the deformation characteristic parameters of the rock-soil body; according to the thickness of each middle layer and a second preset formula, calculating to obtain an upward arch deformation amount of each middle layer; the second preset formula is a deformation time equation established by utilizing the thickness of the middle layer according to a Burgers model; and according to the upward arch deformation amounts of the first layer and all the middle layers, the total upward arch deformation amount of the red-layer soft rock deep cutting is determined. According to the method, the accuracy and efficiency of measuring and calculating the arch deformation of the deep cutting of the red-layer soft rock can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of civil engineering, and in particular to a method and device for measuring and calculating the upturn deformation of a red-bed soft rock deep cutting. Background Art

[0002] This section is intended to provide a background or context to the embodiments of the invention that are recited in the claims. No statement herein is admitted to be prior art by virtue of its inclusion in this section.

[0003] Red bed soft rock exhibits certain expansive and rheological properties. When railways pass through such areas through deep excavation, changes in the hydraulic environment and the stress state caused by unloading often result in sustained, slow upward arching deformation. Existing methods for measuring this arching deformation primarily rely on on-site testing, which relies on monitoring equipment and personnel and exhibits a certain degree of lag. Numerical simulation methods using numerical calculation software such as finite element and finite difference methods also exist. However, these methods require comprehensive consideration of multiple factors, including physical and mechanical properties, geological conditions, and engineering loads. This makes implementation complex, and the resulting simulations often deviate from actual conditions, resulting in low efficiency. Summary of the Invention

[0004] An embodiment of the present invention provides a method for calculating the deformation of a deep red-bed soft rock cutting, which is used to improve the accuracy and efficiency of calculating the deformation of a deep red-bed soft rock cutting. The method includes:

[0005] According to the natural environment factors at the location of the deep road cutting, the foundation is divided into multiple layers from top to bottom; each layer has a different thickness; the multiple layers include a first layer, multiple intermediate layers, and a final layer from top to bottom;

[0006] The arching deformation of the first layer is calculated based on the thickness of the first layer and a first preset formula; the first preset formula is used to calculate the arching deformation of the first layer at any time point based on the thickness of the first layer and the deformation characteristic parameters of the rock and soil mass;

[0007] The upward deformation of each intermediate layer is calculated based on the thickness of each intermediate layer and a second preset formula; the second preset formula is a deformation time equation established based on the Burgers model using the thickness of the intermediate layer;

[0008] The total amount of upwarping deformation of the red bed soft rock deep cutting is determined based on the upwarping deformation of the first layer and all the intermediate layers.

[0009] The embodiment of the present invention further provides a device for calculating the deformation of a deep red-bed soft rock cutting, which is used to improve the accuracy and efficiency of calculating the deformation of a deep red-bed soft rock cutting. The device includes:

[0010] A layer division module is used to divide the foundation into multiple layers from top to bottom according to the natural environmental factors of the location of the deep road cutting; each layer has a different thickness; the multiple layers include a first layer, multiple intermediate layers, and a final layer from top to bottom;

[0011] The arching deformation calculation module is used to calculate the arching deformation of the first layer based on the thickness of the first layer and a first preset formula; the first preset formula is used to calculate the arching deformation of the first layer at any time point based on the thickness of the first layer and the deformation characteristic parameters of the rock and soil mass; the arching deformation of each intermediate layer is calculated based on the thickness of each intermediate layer and the second preset formula; the second preset formula is a deformation time equation established based on the Burgers model using the thickness of the intermediate layer; the total amount of arching deformation of the red bed soft rock deep road cutting is determined based on the arching deformation of the first layer and the arching deformation of all intermediate layers.

[0012] An embodiment of the present invention also provides a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, the above-mentioned method for calculating the upturn deformation of a deep red-bed soft rock cutting is implemented.

[0013] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the method for calculating the upturn deformation of a deep red-bed soft rock cutting is implemented.

[0014] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the above-mentioned method for measuring the upturn deformation of a deep road cutting in red bed soft rock.

[0015] In this embodiment of the present invention, the foundation is divided into multiple layers from top to bottom based on the natural environmental factors of the deep cutting's location. Pre-established formulas are then used to sequentially calculate the arching deformation of the first layer and the remaining layers, ultimately yielding the total arching deformation of the red-bed soft rock deep cutting. Compared to existing techniques using on-site monitoring, which allows for pre-determined arching deformation during the design phase, and compared to existing numerical simulation methods, this method, through layer division and layered deformation calculation, is simple, efficient, and has wider applicability, improving the accuracy and efficiency of arching deformation calculation for red-bed soft rock deep cuttings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0017] Figure 1 Schematic diagram of the process of calculating the deformation of a deep cutting in red soft rock in an embodiment of the present invention;

[0018] Figure 2 FIG. 1 is a specific example of a method for calculating the deformation of a deep cutting in red soft rock in an embodiment of the present invention;

[0019] Figure 3 FIG. 1 is another specific example of a method for calculating the upturn deformation of a deep cutting in red soft rock according to an embodiment of the present invention;

[0020] Figure 4 Schematic diagram of a device for measuring and calculating the upturn deformation of a deep cutting in red soft rock according to an embodiment of the present invention;

[0021] Figure 5 Schematic diagram of a computer device in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0023] In order to clearly describe the technical solutions of the embodiments of the present invention, in the embodiments of the present invention, words such as "first" and "second" are used to distinguish between identical or similar items with basically the same functions and effects. Those skilled in the art can understand that words such as "first" and "second" do not limit the quantity and execution order.

[0024] The technical problem to be solved by the embodiments of the present invention is to provide a method for measuring the arch deformation of deep road cuttings in red bed soft rock, so as to clarify the arch deformation of deep road cuttings in red bed soft rock, and provide a basis for the reinforcement design of deep road cuttings in red bed soft rock areas.

[0025] Figure 1 FIG. 1 is a flow chart of a method for calculating the deformation of a deep cutting in a red-bed soft rock according to an embodiment of the present invention. Figure 1 As shown, the method includes:

[0026] Step 101: Divide the foundation into multiple layers from top to bottom according to the natural environment factors of the deep cutting; each layer has a different thickness; the multiple layers include, from top to bottom, a first layer, multiple intermediate layers, and a final layer;

[0027] Step 102: Calculate the arching deformation of the first layer based on the thickness of the first layer and a first preset formula; the first preset formula is used to calculate the arching deformation of the first layer at any time point based on the thickness of the first layer and the deformation characteristic parameters of the rock and soil mass;

[0028] Step 103: Calculate the arching deformation of each intermediate layer based on the thickness of each intermediate layer and a second preset formula; the second preset formula is a deformation time equation established based on the Burgers model using the thickness of the intermediate layer;

[0029] Step 104: Determine the total amount of the red bed soft rock deep cutting arching deformation based on the arching deformation of the first layer and the arching deformation of all the intermediate layers.

[0030] Below Figure 1 The method shown is explained in detail.

[0031] In step 101, the foundation is divided into multiple layers from top to bottom based on the natural environmental factors of the deep cutting. For example, from the perspective of calculating the uplift deformation, the layers are divided into layers taking into account the deformation characteristics at different depths and the influence of climate, water temperature, and geological factors on the rock and soil at different depths.

[0032] In one embodiment, considering the characteristics of red bed soft rock and based on the natural environmental factors at the location of the deep cutting, the foundation is divided into multiple layers from top to bottom. This may include: dividing the foundation from top to bottom into an arching deformation layer, a hydraulic coupling arching deformation layer, a creeping deformation layer, and a stable layer based on the climate, hydrology, and geology of the deep cutting. The first layer is the atmospheric influence arching deformation layer, the multiple intermediate layers include the hydraulic coupling arching deformation layer and the creeping deformation layer, and the last layer is the stable layer. The natural environmental factors include, but are not limited to, climate, hydrology, and geology.

[0033] Figure 2 FIG. 1 is a specific example of a method for calculating the deformation of a deep red-bed soft rock cutting according to an embodiment of the present invention. Figure 2 As shown in the figure, from the roadbed surface downward, it is divided into the atmospheric influence arch deformation layer C1, the water-mechanical coupling arch deformation layer C2, the creep deformation layer C3 and the stable layer C4, where h1, h2, h3, hw and hcr represent the thickness and depth position of the corresponding layers respectively, and the stress difference Δσ curve at different depths is shown on the right.

[0034] Atmospheric influence arching deformation layer C1: Due to the poor weathering resistance of the red soft rock, after cutting excavation, the mechanical properties of the rock mass within a certain depth range in the shallow layer are significantly degraded by atmospheric factors such as rainfall and temperature fluctuations. Due to the small thickness of this layer, the effects of overburden pressure and horizontal stress on the rock mass deformation can be ignored. The deformation is caused by the expansion and collapse of the red soft rock.

[0035] Hydraulic coupling arching deformation layer C2: The rock mass below the atmospheric influence arching deformation layer and above the stable groundwater level has a small overburden load, a large difference between horizontal stress and vertical stress, obvious rheological deformation of the rock stratum, a large crack opening, and is strongly affected by the infiltration of upper surface water, the rise of groundwater, and water vapor evaporation.

[0036] Creep deformation layer C3: The rock layer below the stable lower water level. Since this part of the rock mass is located in a saturated groundwater environment for a long time, the water content remains basically unchanged. The deformation of this part of the rock layer is mainly affected by the horizontal stress adjusted by the unloading excavation stress and the vertical creep deformation caused by the vertical stress difference.

[0037] Stable layer C4: This layer is buried deep and is not affected by excavation unloading. The water environment also remains stable. The rock layer in this part is a non-deformable stable layer.

[0038] After layer division, according to the mechanism of arching deformation in red bed soft rock deep cutting, the arching deformation S is divided into expansion deformation S1 of C1 layer, creep deformation S2 of hydraulic coupling arching deformation layer C2, and creep deformation S3 of creep deformation layer C3.

[0039] In a preferred embodiment, after dividing the foundation into multiple layers from top to bottom according to the natural environment factors at the location of the deep cutting, the method may further include: determining the thicknesses of the multiple layers.

[0040] In one embodiment, determining the thickness of the C1 layer, specifically, determining the thickness of multiple layers may include: determining the thickness of the atmospherically affected arch deformation layer based on local meteorological data of the red bed soft rock deep cutting, deformation observation data of the stratum, and water absorption characteristic parameters.

[0041] For example, if data is available, meteorological data such as rainfall, evaporation, and temperature changes can be obtained; the stratigraphic structure of the area where the road cutting is located, including soil type and stratification, can be obtained; soil tests can be conducted to determine its water absorption characteristic parameters such as water absorption and expansion; and finally, numerical simulation methods or empirical formulas can be used to determine the thickness of the atmospheric influence arch deformation layer.

[0042] When no data is available, the value can be taken as 1.3m~2.5m. When the water content of the rock layer changes greatly, the larger value can be taken, otherwise the smaller value can be taken.

[0043] In one embodiment, determining the thickness of the C2 layer, specifically, determining the thickness of multiple layers, includes: obtaining local stable groundwater level elevation data of a red bed soft rock deep cutting; subtracting the thickness of the atmospherically affected arch deformation layer from the local stable groundwater level elevation data to obtain the thickness of the hydraulically coupled arch deformation layer.

[0044] For example, the lowest stable groundwater level elevation hw is observed by using groundwater level observation means. The observation period is required to be no less than one complete hydrological year. The depth of the hydraulically coupled arch deformation layer C2 is h2 = hw - h1 (unit: m).

[0045] In one embodiment, determining the thickness of the C3 layer, wherein determining the thickness of the plurality of layers comprises:

[0046] By hydraulic fracturing, horizontal stress and vertical stress of the rock formation at different depths of the foundation are obtained to obtain a first stress difference at different depths; the first stress difference is the difference between the horizontal stress and the vertical stress of the rock formation;

[0047] Obtaining a simulated stress difference when a foundation rock sample is subjected to a simulated horizontal stress and a simulated vertical stress and undergoes creep deformation; the simulated stress difference is the difference between the simulated horizontal stress and the simulated vertical stress;

[0048] When the simulated stress difference is equal to the first stress difference, obtaining a depth value corresponding to the first stress difference;

[0049] The thickness of the creep deformation layer is obtained by subtracting the thickness of the atmospheric influence upper arch deformation layer and the thickness of the hydraulic coupling upper arch deformation layer from the depth value.

[0050] Figure 3 This is another specific example of the method for calculating the deformation of a deep red-bed soft rock cutting according to the embodiment of the present invention. Figure 3 When implementing, first establish an on-site ground stress observation system, and use hydraulic fracturing to measure the horizontal stress σ of the rock formation at different depths. h and vertical stress σ z , and the stress difference of rock layers at different depths is obtained as Δσ=σ h -σ z , and draw different depth Δσ curves, Δσ max is the maximum value of the Δσ curve.

[0051] On-site basement rock samples were used to conduct indoor large-scale loading-unloading creep and expansion experiments. The rock sample size can be a cube with a length, width and height of 0.1m. Lateral loading can be used to simulate the horizontal stress σ h , vertical loading method simulates vertical stress σ z The loading pressure difference Δσ can range from 0kPa to 1500kPa, the water content is 0% to 15%, and the creep deformation modulus K of rock samples with different water contents is recorded. m , K k (where K m K is the creep deformation modulus of rock entering uniform creep under shear stress; kis the creep deformation modulus of rock under stress), expansion deformation modulus Kp, deformation viscosity coefficient η, and the stress difference threshold Δσ for creep deformation cr . When Δσ=Δσ on the Δσ curve cr The depth at this time is hcr, and the depth of the creep deformation layer C3 is h3 = hcr-h2-h1.

[0052] After the thickness of the arching deformation layer, hydraulic coupling arching deformation layer and creep deformation layer are determined, the arching deformation amount of each layer is determined respectively.

[0053] In step 102, the arch deformation of the first layer is calculated based on the thickness of the first layer and a first preset formula; the first preset formula is used to calculate the arch deformation of the first layer at any time point based on the thickness of the first layer and the deformation characteristic parameters of the rock and soil mass.

[0054] The first preset formula can be obtained as follows:

[0055] Based on the fitting analysis of test data (for example, test data including the time-varying deformation patterns of rock formations at different depths obtained from large-scale indoor loading-unloading creep and expansion experiments), the deformation of the upper arch deformation layer should be positively correlated with time and the ultimate expansion deformation, and exponentially correlated with the time variable and the viscosity coefficient. The first preset formula is thus determined to be expressed as follows:

[0056]

[0057] Where S1 represents the upward deformation of the first layer; K is the empirical coefficient of expansion deformation of the red soft rock in the upper arch deformation layer C1, which can be taken as 0.6 for high-speed ballastless railway; p is the ultimate expansion deformation strain of the red bed soft rock; h1 is the thickness of the upper arch deformation layer; η is the deformation viscosity coefficient of the basement rock layer, which reflects the strain rate of the rock under shear stress. The larger η is, the smaller the deformation rate is; K p Both η and η can be determined by water absorption expansion test; t is the time from excavation to the current calculation time.

[0058] In step 103, the arching deformation of each intermediate layer is calculated based on the thickness of each intermediate layer and a second preset formula; the second preset formula is a deformation time equation established based on the Burgers model using the thickness of the intermediate layer.

[0059] In the embodiment of the present invention, considering that the deformation of the hydraulic coupling arching deformation layer and the creep deformation layer is mainly creep deformation, the arching deformation of these two layers can be measured and calculated using the same method.

[0060] The water content of the hydraulically coupled arching deformation layer C2 fluctuates significantly above the stable water level, while the water content of the creep deformation layer C3 is relatively constant below the stable water level. In the embodiment of the present invention, the deformation of C2 and C3 is divided into three parts: the first part is the instantaneous deformation under stress, the second part is the uniform creep deformation under stress, and the third part is the decaying creep deformation. The first part has no impact on the project, so the creep deformation of the second and third parts is mainly calculated. Based on the Burgers model, the deformation time equations of the hydraulically coupled arching deformation layer C2 and the creep deformation layer C3 are established, that is, the second preset formula is expressed as follows:

[0061]

[0062] Where S 2,3 represents the camber deformation of any intermediate layer, i.e., C2 or C3; Δσ represents the difference between the horizontal stress and the vertical stress of any intermediate layer; K m K is the creep deformation modulus of rock entering uniform creep under shear stress; k is the creep deformation modulus of rock under stress; t0, t1, and t2 represent the time from excavation to the current calculation time, the total time of uniform creep, and the total time of decay creep, respectively. Both t1 and t2 can be determined by creep tests; h 2,3 It represents the thickness of any intermediate layer, that is, the thickness of C2 or C3. When calculating S2, h2 is substituted, and when calculating S3, h3 is substituted.

[0063] Finally, in step 104, the total amount of the red bed soft rock deep cutting arching deformation is determined based on the arching deformation of the first layer and the arching deformation of all the intermediate layers.

[0064] During implementation, the arching deformation of each layer can also be measured separately. Finally, the arching deformation of all layers can be added together to obtain the total arching deformation of the red bed soft rock deep cutting.

[0065] The present invention also provides a device for measuring the deformation of a deep red-bed soft rock cutting, as described in the following embodiments. Because the principles underlying the device are similar to those of the method for measuring the deformation of a deep red-bed soft rock cutting, the implementation of the device can be referenced to the implementation of the method for measuring the deformation of a deep red-bed soft rock cutting, and any repetitions will not be repeated.

[0066] Figure 4 FIG. 1 is a schematic diagram of a device for measuring and calculating the deformation of a deep red-bed soft rock cutting according to an embodiment of the present invention. Figure 4 As shown, the apparatus 400 includes:

[0067] The layer division module 401 is used to divide the foundation into multiple layers from top to bottom according to the natural environmental factors of the location of the deep road cutting; each layer has a different thickness; the multiple layers include, from top to bottom, a first layer, multiple intermediate layers, and a final layer;

[0068] The arch deformation calculation module 402 is used to calculate the arch deformation of the first layer based on the thickness of the first layer and a first preset formula; the first preset formula is used to calculate the arch deformation of the first layer at any time point based on the thickness of the first layer and the deformation characteristic parameters of the rock and soil mass; the arch deformation of each intermediate layer is calculated based on the thickness of each intermediate layer and the second preset formula; the second preset formula is a deformation time equation established based on the Burgers model using the thickness of the intermediate layer; the total amount of arch deformation of the red bed soft rock deep road cutting is determined based on the arch deformation of the first layer and the arch deformation of all intermediate layers.

[0069] In one embodiment, the first layer is an atmospheric influence arching deformation layer, the multiple intermediate layers include a hydraulic coupling arching deformation layer and a creep deformation layer, and the last layer is a stable layer; the natural environment factors include climate, hydrology, and geological conditions;

[0070] The layer division module 401 is specifically used to divide the foundation from top to bottom into an arching deformation layer, a hydraulic coupling arching deformation layer, a creep deformation layer and a stable layer according to the climate, hydrology and geological conditions of the deep cutting location.

[0071] In one embodiment, the apparatus 400 further includes:

[0072] The layer thickness determination module is used to determine the thickness of multiple layers after the layer division module 401 divides the foundation into multiple layers from top to bottom according to the natural environment factors of the deep road cutting location.

[0073] In one embodiment, the layer thickness determination module is specifically used to determine the thickness of the atmospherically affected arch deformation layer based on local meteorological data of the red bed soft rock deep cutting, deformation observation data of the stratum, and water absorption characteristic parameters.

[0074] In one embodiment, the layer thickness determination module is specifically used to: obtain local stable groundwater level elevation data of the red layer soft rock deep road cutting; subtract the thickness of the atmospheric impact upper arch deformation layer from the local stable groundwater level elevation data to obtain the thickness of the hydraulic coupling upper arch deformation layer.

[0075] In one embodiment, the layer thickness determination module is specifically configured to:

[0076] By hydraulic fracturing, horizontal stress and vertical stress of the rock formation at different depths of the foundation are obtained to obtain a first stress difference at different depths; the first stress difference is the difference between the horizontal stress and the vertical stress of the rock formation;

[0077] Obtaining a simulated stress difference when a foundation rock sample is subjected to a simulated horizontal stress and a simulated vertical stress and undergoes creep deformation; the simulated stress difference is the difference between the simulated horizontal stress and the simulated vertical stress;

[0078] When the simulated stress difference is equal to the first stress difference, obtaining a depth value corresponding to the first stress difference;

[0079] The thickness of the creep deformation layer is obtained by subtracting the thickness of the atmospheric influence upper arch deformation layer and the thickness of the hydraulic coupling upper arch deformation layer from the depth value.

[0080] In one embodiment, the first preset formula is expressed as follows:

[0081]

[0082] Where S1 represents the upward deformation of the first layer; K is the empirical coefficient of expansion deformation of the first red layer soft rock; p is the ultimate expansion deformation strain of the red layer soft rock; h1 is the thickness of the upper arch deformation layer; η is the deformation viscosity coefficient of the basement rock layer, reflecting the strain rate of the rock under shear stress; t is the time from excavation to the current calculation time.

[0083] In one embodiment, the second preset formula is expressed as follows:

[0084]

[0085] Where S 2,3 represents the camber deformation of any intermediate layer, i.e., C2 or C3; Δσ represents the difference between the horizontal stress and the vertical stress of any intermediate layer; K m K is the creep deformation modulus of rock entering uniform creep under shear stress; k is the creep deformation modulus of rock under stress; t0, t1, and t2 represent the time from excavation to the current calculation time, the total time of uniform creep, and the total time of decay creep, respectively. Both t1 and t2 can be determined by creep tests; h 2,3 It represents the thickness of any intermediate layer, that is, the thickness of C2 or C3. When calculating S2, h2 is substituted, and when calculating S3, h3 is substituted.

[0086] Figure 5 Schematic diagram of a computer device according to an embodiment of the present invention. Figure 5 As shown, an embodiment of the present invention further provides a computer device 500, including a processor 501, a memory 502, and a computer program 503 stored in the memory 502 and executable on the processor 501. When the processor 501 executes the computer program 503, the above-mentioned method for calculating the deformation of the upturn of a deep road cutting in red soft rock is implemented.

[0087] An embodiment of the present invention further provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the method for calculating the upturn deformation of a deep red-bed soft rock cutting is implemented.

[0088] An embodiment of the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, it implements the above-mentioned method for measuring the upturn deformation of a deep road cutting in red bed soft rock.

[0089] In this embodiment of the present invention, the foundation is divided into multiple layers from top to bottom based on the natural environmental factors of the deep cutting's location. Pre-established formulas are then used to sequentially calculate the arching deformation of the first layer and the remaining layers, ultimately yielding the total arching deformation of the red-bed soft rock deep cutting. Compared to existing techniques using on-site monitoring, which allows for pre-determined arching deformation during the design phase, and compared to existing numerical simulation methods, this method, through layer division and layered deformation calculation, is simple, efficient, and has wider applicability, improving the accuracy and efficiency of arching deformation calculation for red-bed soft rock deep cuttings.

[0090] It will be understood by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Thus, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0091] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as combinations of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0092] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0093] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0094] The specific embodiments described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for measuring and calculating the deformation of a deep red-bed soft rock cutting, characterized in that: include: According to the natural environment factors at the location of the deep road cutting, the foundation is divided into multiple layers from top to bottom; each layer has a different thickness; the multiple layers include a first layer, multiple intermediate layers, and a final layer from top to bottom; According to the thickness of the first layer and the first preset formula, the upward arch deformation of the first layer is calculated; The first preset formula is used to calculate the arching deformation of the first layer at any time point based on the thickness of the first layer and the deformation characteristic parameters of the rock and soil mass; According to the thickness of each intermediate layer and the second preset formula, the upward arch deformation of each intermediate layer is calculated; The second preset formula is a deformation time equation established based on the Burgers model using the thickness of the intermediate layer; The total amount of upwarping deformation of the red bed soft rock deep cutting is determined based on the upwarping deformation of the first layer and all the intermediate layers.

2. The method according to claim 1, wherein The first layer is an atmospheric influence arching deformation layer, the multiple intermediate layers include a hydraulic coupling arching deformation layer and a creep deformation layer, and the last layer is a stable layer; the natural environment factors include climate, hydrology, and geological conditions; According to the natural environment factors at the location of the deep cutting, the foundation is divided into multiple layers from top to bottom, including: According to the climate, hydrology and geological conditions of the deep cutting, the foundation is divided from top to bottom into an arching deformation layer, a hydraulic coupling arching deformation layer, a creeping deformation layer and a stable layer. According to the natural environment factors of the deep cutting location, the foundation is divided into multiple layers from top to bottom, including: Determine the thickness of multiple layers.

3. The method according to claim 2, wherein Determine thickness of multiple layers, including: The thickness of the atmospherically affected upper arch deformation layer is determined based on the local meteorological data of the red bed soft rock deep cutting, the deformation observation data of the stratum, and the water absorption characteristic parameters; Obtain local stable groundwater level elevation data for deep red bed soft rock cuttings; The thickness of the hydraulic coupling arching deformation layer is obtained by subtracting the thickness of the atmospheric influence arching deformation layer from the local stable groundwater level elevation data.

4. The method according to claim 2, wherein Determine thickness of multiple layers, including: By hydraulic fracturing, horizontal stress and vertical stress of the rock formation at different depths of the foundation are obtained to obtain a first stress difference at different depths; the first stress difference is the difference between the horizontal stress and the vertical stress of the rock formation; Obtaining a simulated stress difference when a foundation rock sample is subjected to a simulated horizontal stress and a simulated vertical stress and undergoes creep deformation; the simulated stress difference is the difference between the simulated horizontal stress and the simulated vertical stress; When the simulated stress difference is equal to the first stress difference, obtaining a depth value corresponding to the first stress difference; The thickness of the creep deformation layer is obtained by subtracting the thickness of the atmospheric influence upper arch deformation layer and the thickness of the hydraulic coupling upper arch deformation layer from the depth value.

5. The method according to claim 1, wherein The first preset formula is expressed as follows: Where S1 represents the upward deformation of the first layer; K is the empirical coefficient of expansion deformation of the first red layer soft rock; p is the ultimate expansion deformation strain of the red bed soft rock; h1 is the thickness of the upper arch deformation layer; η is the deformation viscosity coefficient of the basement rock layer, which reflects the strain rate of the rock under shear stress; t is the time from excavation to the current calculation time.

6. The method according to claim 1, wherein The second preset formula is expressed as follows: Where S 2,3 represents the camber deformation of any intermediate layer; Δσ represents the difference between the horizontal stress and the vertical stress of any intermediate layer; K m K is the creep deformation modulus of rock entering uniform creep under shear stress; k is the creep deformation modulus of rock under stress; t0, t1, and t2 represent the time from excavation to the current calculation time, the total time of uniform creep, and the total time of decay creep, respectively; h 2,3 represents the thickness of any intermediate layer.

7. A device for measuring and calculating the deformation of a deep red-bed soft rock cutting, characterized in that: include: A layer division module is used to divide the foundation into multiple layers from top to bottom according to the natural environmental factors of the location of the deep road cutting; each layer has a different thickness; the multiple layers include a first layer, multiple intermediate layers, and a final layer from top to bottom; an arching deformation calculation module, configured to calculate the arching deformation of the first layer according to the thickness of the first layer and a first preset formula; The first preset formula is used to calculate the arching deformation of the first layer at any time point based on the thickness of the first layer and the deformation characteristic parameters of the rock and soil mass; the arching deformation of each intermediate layer is calculated based on the thickness of each intermediate layer and the second preset formula; The second preset formula is a deformation time equation established based on the Burgers model using the thickness of the intermediate layer; The total amount of upwarping deformation of the red bed soft rock deep cutting is determined based on the upwarping deformation of the first layer and all the intermediate layers.

8. A computer device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the method according to any one of claims 1 to 6 is implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

10. A computer program product, characterized in that The computer program product comprises a computer program, and when the computer program is executed by a processor, the method according to any one of claims 1 to 6 is implemented.

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