Railroad widening subgrade by active fracture method and system

Abstract

The present application relates to a kind of railway widening roadbed through active fault method and system, belong to traffic engineering technical field, the method utilizes active fault rotation direction, average annual horizontal sliding rate and its included angle with the direction of railway line as parameter, calculates the displacement amount along the vertical line direction within the design annual use limit of railway, multiplied by design safety factor, obtains roadbed design widening value.The present application provides control basis for the determination of roadbed widening value when railway passes through active fault zone in the form of roadbed, guarantees the economy and safety of railway operation.

Description

Technical Field

[0001] This invention belongs to the field of transportation engineering technology, specifically, it relates to a method and system for widening railway subgrade through active fractures. Background Technology

[0002] With the increase in railway construction mileage and the improvement of construction standards, it is inevitable that railways will pass through active fault zones in areas with high seismic intensity. Since the repairability of roadbed structures is significantly better than that of bridges, it is a widely accepted consensus in the industry to use roadbed structures to pass through active fault zones.

[0003] However, sudden seismic activity can cause some displacement of the roadbed structure. If this displacement leads to excessive deformation of the pavement structure, it will inevitably compromise the operational safety of the railway, make track repair difficult, delay repair time, and result in greater economic losses. Currently, there is a lack of reasonable methods to address this displacement so that the function of the displaced roadbed structure can be restored more quickly and economically. Summary of the Invention

[0004] In situations where railways pass through active faults via the roadbed, excessive lateral deformation of the roadbed caused by fault displacement inevitably compromises railway operational safety and complicates track repair. To overcome these problems, this invention provides a method for widening the railway roadbed to pass through active faults, improving the accuracy of railway roadbed construction and the repairability during railway operation.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] A method for widening railway subgrade via active fracture includes the following steps:

[0007] Step (1) Collect parameters

[0008] Collect relevant parameters such as the rotation direction, annual average sliding rate, and angle between the active faults along the railway line and the railway line direction;

[0009] Step (2) Calculate the horizontal displacement caused by active fracture along the vertical line direction within the railway's design service life based on the above parameters;

[0010] Step (3) Multiply the horizontal displacement obtained in step (2) by the design safety factor to obtain the roadbed widening value.

[0011] Furthermore, the calculation process for step (2) is as follows:

[0012]

[0013] In the formula, d: the horizontal displacement caused by the active fracture in the direction perpendicular to the track;

[0014] n: Design service life of the railway;

[0015] a: Annual average slip rate of active faults;

[0016] θ: The angle between the active fault zone and the railway line alignment.

[0017] Furthermore, in step (3), the safety factor is a design safety factor that takes into account the rotation direction of the active fracture.

[0018] Furthermore, the calculation process for step (3) is as follows:

[0019]

[0020] In the formula, ΔB: the widening value of the roadbed surface;

[0021] F: Design safety factor, preferably 1.5~2.0;

[0022] d: Horizontal displacement caused by a break in the vertical direction of the track.

[0023] The present invention also relates to a system comprising a data collector and a processor. The data collector collects the rotation direction, annual average sliding rate, and angle between the active fracture along the railway line and the direction of the active fracture. The processor calculates the horizontal displacement caused by the active fracture along the direction perpendicular to the railway line within the railway's design service life. The obtained horizontal displacement is multiplied by the design safety factor to obtain the roadbed widening value.

[0024] Furthermore, the processor's calculation process is as follows:

[0025]

[0026] In the formula, d: the horizontal displacement caused by the active fracture in the direction perpendicular to the track;

[0027] n: Design service life of the railway;

[0028] a: Annual average slip rate of active faults;

[0029] θ: The angle between the active fault zone and the railway line alignment;

[0030]

[0031] In the formula, ΔB: the widening value of the roadbed surface;

[0032] F: Design safety factor, preferably 1.5~2.0;

[0033] d: Horizontal displacement caused by a break in the vertical direction of the track.

[0034] The present invention also relates to an electronic device, including a memory, a processor, and a computer program on the memory and executable on the processor, wherein the processor executes the computer program to implement the steps of the above method.

[0035] The present invention also relates to a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method described above.

[0036] One of the hazards of active fractures is horizontal displacement, which leads to a loss of railway subgrade width. Repairing this width requires sacrificing significant operational time, resulting in substantial economic costs. Anticipating this width loss and widening the subgrade can reduce repair time and thus minimize economic losses. This invention addresses the displacement caused by active fractures by widening the subgrade surface, enabling faster and more economical restoration of the subgrade structure's function. This provides precise guidance for railway construction and more effectively solves the problem of railway subgrades passing through active fracture zones.

[0037] This invention utilizes geological data to calculate the changes in the lateral width of the roadbed caused by active faults, thereby addressing the issue of roadbed width variations due to geological faults within the design life of high-speed railways through roadbed widening. Specifically, for a given roadbed widening value, the rotation direction of the active fault, the annual average sliding rate, and the angle between the fault and the railway route, provided by geological survey data, are used as parameters to calculate the displacement along the perpendicular direction of the railway within its design service life. This displacement is then multiplied by a design safety factor to obtain the design widening value for the roadbed. This method provides a control basis for determining the roadbed widening value when a railway passes through an active fault zone, ensuring the economy and safety of railway operation. Attached Figure Description

[0038] Figure 1 This is a schematic diagram of a railway for which the roadbed widening method of this invention is applied;

[0039] Figure 2 This is a system block diagram of an embodiment of the present invention;

[0040] In the figure, 1 - active fault zone; 2 - rotation direction of the active fault; 3 - angle θ between the active fault zone and the railway subgrade; 4 - width B of the subgrade surface before widening; 5 - widening value ΔB of the subgrade surface; 6 - edge line of the subgrade surface before widening; 7 - edge line of the subgrade surface after widening. Detailed Implementation

[0041] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0042] Unless otherwise defined, the technical or scientific terms used in the embodiments of this application shall have the ordinary meaning understood by one of ordinary skill in the art. The terms "first," "second," and similar terms used in these embodiments do not indicate any order, quantity, or importance, but are merely used to distinguish different components.

[0043] like Figure 1 As shown, a section of railway encounters an active fault and passes through it in the form of a roadbed. This embodiment of the method for widening the railway roadbed to pass through an active fault includes the following steps:

[0044] Step (1) Collect parameters, including the rotation direction of the active faults traversed by the railway, the annual average sliding rate, and the angle between the faults and the railway line direction;

[0045] Step (2) Calculate the horizontal displacement caused by the active fault along the direction perpendicular to the railway line, based on the railway's design service life, the annual average sliding rate of the active fault, and its angle with the railway line alignment. The method is as follows:

[0046]

[0047] In the formula, d: the horizontal displacement caused by the active fracture in the direction perpendicular to the track;

[0048] n: Design service life of the railway;

[0049] a: Average annual slip rate of active faults

[0050] θ: The angle between the active fault zone and the railway line alignment.

[0051] Step (3) Multiply the horizontal displacement caused by the active fracture along the perpendicular direction of the track by the design safety factor that takes into account the rotation direction of the active fracture to obtain the roadbed widening value:

[0052]

[0053] In the formula, ΔB: the widening value of the roadbed surface;

[0054] F: Design safety factor, preferably 1.5~2.0;

[0055] d: Horizontal displacement caused by a break in the vertical direction of the track.

[0056] like Figure 2 As shown, to implement the method of this embodiment, this embodiment also provides a system, including an input terminal, a memory, a data acquisition unit, and a processor. The data acquisition unit collects the rotation direction, annual average sliding rate, and angle between the active faults traversed by the railway and the railway line alignment; the processor calculates the horizontal displacement caused by the active faults along the direction perpendicular to the railway line within the railway's design service life; the obtained horizontal displacement is multiplied by a design safety factor to obtain the roadbed widening value. The memory stores the raw data and calculation results. Data provided by geological exploration data can be stored in the memory for the data acquisition unit to access, or the data acquisition unit can be connected to other systems storing geological exploration data to access the corresponding data.

[0057] In the above embodiments, implementation can be achieved entirely or partially through software, hardware, firmware, or any combination thereof. When implemented using software, it can be implemented entirely or partially in the form of a computer program product. The computer program product includes one or more computer instructions. When the computer program instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a readable storage medium or transmitted from one readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another website, computer, server, or data center via wired (e.g., coaxial cable, fiber optic, digital subscriber line, or wireless) means. The readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media.

[0058] The processors mentioned above can be general-purpose processors, including central processing units, network processors, etc.; they can also be digital signal processors, application-specific integrated circuits, field-programmable gate arrays or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components.

[0059] Optionally, embodiments of this application also provide a storage medium storing instructions that, when run on a computer, cause the computer to perform the methods described in the above embodiments.

[0060] Optionally, embodiments of this application also provide a chip for executing instructions, the chip being used to execute the methods of the embodiments shown above.

[0061] This application also provides a program product, which includes a computer program stored in a storage medium. At least one processor can read the computer program from the storage medium, and when the at least one processor executes the computer program, it can implement the method of the above embodiments.

[0062] Application Examples

[0063] like Figure 1 As shown, this example is a section of railway subgrade with a subgrade width of 13.8m, a railway design service life of 100 years, an average annual sliding rate of 0.01m / year for active faults, an angle of 60 degrees between the active fault zone and the railway line alignment, and a design safety factor of 2.0. The subgrade widening calculation according to the method in this embodiment is as follows:

[0064] 2.0 * 100 years * 0.01 m / year * sin60 = 1.732 m;

[0065] Taking into account the rotation direction of the active fracture, the roadbed surface was widened by 0.866m on each side, resulting in a final roadbed surface width of 15.532m.

[0066] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made to it in form and detail without departing from the scope defined by the claims of the present invention.

Claims

1. A method for widening railway subgrade through active fractures, characterized in that: Includes the following steps: Step (1): Collect parameters Collect the rotation direction, annual average slip rate, and angle between the active faults along the railway line and the railway line direction. Step (2): Calculate the horizontal displacement caused by active fracture along the vertical track direction within the railway's design service life based on the above parameters. The calculation process is as follows: ； In the formula, d: the horizontal displacement caused by the active fracture in the direction perpendicular to the track; n: Design service life of the railway; a: Annual average slip rate of active faults; θ: The angle between the active fault zone and the railway line alignment; Step (3): Multiply the horizontal displacement obtained in step (2) by the design safety factor to obtain the roadbed widening value; the safety factor is the design safety factor that takes into account the rotation direction of the active fracture, and the calculation process is as follows: ； In the formula, ΔB: the widening value of the roadbed surface; F: Design safety factor, preferably 1.5~2.0; d: Horizontal displacement caused by a break in the vertical direction of the track.

2. A system for widening railway subgrade via active fractures, characterized in that: The system includes a data acquisition unit and a processor. The data acquisition unit collects the rotation direction, annual average sliding rate, and angle between the active fractures along the railway line and the railway line direction. The processor calculates the horizontal displacement caused by the active fractures along the direction perpendicular to the railway line within the railway's design service life. The obtained horizontal displacement is multiplied by the design safety factor to obtain the roadbed widening value. The processor's calculation process is as follows: ； In the formula, d: the horizontal displacement caused by the active fracture in the direction perpendicular to the track; n: Design service life of the railway; a: Annual average slip rate of active faults; θ: The angle between the active fault zone and the railway line alignment; ； In the formula, ΔB: the widening value of the roadbed surface; F: Design safety factor, preferably 1.5~2.0; d: Horizontal displacement caused by a break in the vertical direction of the track.

3. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the computer program, it implements the steps of the method as described in claim 1.

4. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, it implements the steps of the method as described in claim 1.

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