Breakage dam body material design method of barrier dam

Abstract

The invention discloses a dam burst dam body material design method, which comprises the following steps of: acquiring sand material data graded and paired with a burst dam body material, and preprocessing the sand material data; controlling the water content of the sand material data to obtain regulation and control data, and carrying out a dam body building simulation test according to the regulation and control data; and configuring a damming material according to the sediment transportation strength by adopting a similar proportion, and outputting a dam body material. The method not only can improve the design precision of the dam burst dam body material of the barrier dam, but also has better interpretability, and can be directly applied to a system for designing the dam burst dam body material of the barrier dam.

Description

Technical Field

[0001] The invention relates to the field of material design, and in particular to a method for designing materials for a dam body that may cause a dam to fail. Background Art

[0002] In the natural environment, the formation and collapse of a landslide dam is a complex and unpredictable natural phenomenon, which is often accompanied by severe natural disasters such as floods and mudslides, posing a serious threat to the safety of life and property of people in downstream areas. In order to effectively respond to this challenge, scientists have been exploring how to simulate, predict and even control the collapse process of a landslide dam through human intervention, among which the design and optimization of dam materials is a key link. Traditional dam material design methods often rely on empirical formulas or simple trial and error, lacking systematicity and scientificity, and it is difficult to accurately reflect the dynamic change characteristics of dam materials during actual collapse.

[0003] To address this problem, a design method for dam body materials based on fine data analysis and simulation tests is proposed. This method aims to accurately design dam body materials that meet specific breach conditions through scientific data collection, preprocessing, analysis and simulation tests, so as to improve the ability to predict and control the breach process of dams.

[0004] Specifically, firstly, the sand material data of the breach dam material gradation pair are collected through field investigation or laboratory simulation, including but not limited to the physical properties of sand particle size distribution, shape, density, etc. Then, these raw data are preprocessed to remove outliers, fill in missing values, and perform necessary normalization or standardization to ensure the accuracy and comparability of the data. Summary of the invention

[0005] The purpose of the invention is to provide a method for designing materials of a weir dam bursting dam body.

[0006] To achieve the above object, the present invention is implemented according to the following technical solutions:

[0007] The present invention comprises the following steps:

[0008] Collecting sand material data of the material gradation pair of the breached dam body, and preprocessing the sand material data;

[0009] Controlling the water content of the sand material data to obtain control data, and conducting a dam construction simulation test according to the control data;

[0010] The dam-building materials are configured in similar proportions according to the sediment transport intensity, and the dam body materials are output.

[0011] Furthermore, the method of selecting the sand material data according to the Shields parameter to obtain the dam material includes:

[0012] The sediment transport intensity is expressed by the Shields parameter, which is expressed as:

[0013]

[0014] The water conservancy radius is R b , the bed shear stress is τ b , the weight of sediment is γ s , the water density is γ, the median particle size of the sediment is d, the sediment transport intensity is θ, the hydraulic slope is J, the flow velocity is u, and the roughness is n.

[0015] Furthermore, the method for controlling the water content of the sand material data to obtain the control data includes:

[0016] Input the sand material data into the moisture content control model and calculate the moisture content of the sand material data:

[0017]

[0018] The moisture content of the a-th sand material data is f a , the i-th sand material particle size mass in the a-th sand material data is U a,i , the total mass of the sand material particle size in the a-th sand material data is U a , the mass of dry sand in the ath sand material data is Q a,s , the water mass in the a-th sand material data is Q a,w , the number of sand particles is N i ;

[0019] The sand material data with a water content between 2% and 10% are regarded as qualified sand material data, and the qualified sand material data are used to conduct a simulation test of dam construction to obtain test data;

[0020] Calculate the beneficial ratio of qualified sand material data based on the test data:

[0021]

[0022] The weight coefficients are The volume of the dam material is V, and the volume of the solid particles of the qualified sand material data is V 1 The cross-sectional area of ​​the dam material is S, and the maximum force on the dam material during compression failure is F. c The maximum force on the dam material during tensile failure is F t The maximum force that the material is subjected to during shear failure is F s , the head difference is Δd, and the saturated permeability of the dam material is β 1 , the effective saturation of the dam material is Y, and the relative permeability of the dam material is β 2 , the flow coefficient is The acceleration of gravity is g, and the benefit ratio of the ath qualified sand material data is

[0023] The moisture content is continuously adjusted and the beneficial ratio is recalculated until the beneficial ratio is greater than 0.432, and the qualified sand material data after the adjustment that meets the conditions is output as the control data.

[0024] Furthermore, the method of configuring dam-building materials in similar proportions according to the sediment transport intensity includes:

[0025] When sediment transport satisfies Shields similarity, the similarity of the phenomenon is guaranteed, and the relationship between the converted particle size similarity scale and the geometric scale is obtained, and the expression is:

[0026]

[0027] The particle size ratio is k b , the geometric scale is L;

[0028] According to the relationship between the converted particle size similarity scale and the geometric scale, the geometric scale of the model and prototype is selected according to the test site and water supply capacity, the similarity criterion is obtained, and the dam construction materials are configured according to the similarity criterion.

[0029] In a second aspect, an embodiment of the present application further provides an electronic device, including:

[0030] A processor; and a memory arranged to store computer executable instructions, which when executed cause the processor to perform the method steps described in the first aspect.

[0031] In a third aspect, an embodiment of the present application further provides a computer-readable storage medium, which stores one or more programs. When the one or more programs are executed by an electronic device including multiple applications, the electronic device executes the method steps described in the first aspect.

[0032] The beneficial effects of the present invention are:

[0033] The present invention is a method and system for designing materials for a dam breach. Compared with the prior art, the present invention has the following technical effects:

[0034] The present invention can improve the accuracy of the design of the dam body material of the barrier dam breach through the steps of pretreatment, material selection, material grading, water content control, simulation test and dam body material configuration, thereby improving the accuracy of the design of the dam body material of the barrier dam breach, optimizing the design of the dam body material of the barrier dam breach, greatly saving resources and improving work efficiency, realizing the intelligent design of the dam body material of the barrier dam breach, performing material grading and controlling water content of the multi-dimensional dam body material design of the barrier dam breach in real time, having important significance for the design of the dam body material of the barrier dam breach, being adaptable to the design of the dam body material of the barrier dam breach of different standards and the design requirements of the dam body material of the barrier dam breach of different standards, and having certain universality. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A flowchart of the steps of a method for designing materials for a weir dam breach according to the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of an electronic device in an embodiment of this specification;

[0037] Figure 3 It is a structural diagram of a simulation experimental system in the embodiment of this specification; upstream reservoir 7, test water tank 8, downstream pool 9, water supply system 10, horizontal water tower 2, expansion pool 11, dam body 12, water pump 13. DETAILED DESCRIPTION

[0038] The present invention is further described below by means of specific embodiments. The illustrative embodiments and descriptions of the present invention are used to explain the present invention but are not intended to limit the present invention.

[0039] A method for designing materials for a dam breaching dam body according to the present invention comprises the following steps:

[0040] like Figure 1 As shown, in this embodiment, the following steps are included:

[0041] Collecting sand material data of the material gradation pair of the breached dam body, and preprocessing the sand material data;

[0042] Controlling the water content of the sand material data to obtain control data, and conducting a dam construction simulation test according to the control data;

[0043] Using similar proportions to configure dam-building materials according to the sediment transport intensity, and outputting dam body materials;

[0044] In the actual evaluation, during the test, the water level drop rate of the upstream reservoir is automatically controlled by the horizontal water tower 5; the upstream reservoir consists of a main reservoir of 20m long × 12m wide and an auxiliary reservoir of 10m long × 12m wide, 1.6m high, with a maximum storage capacity of 576m3, the downstream pool is 22m long, 14m wide, 1.8m deep, with a maximum storage capacity of 550m3, and the test flume is 18m long, 4m wide, and 0.8m high. A water pump is used to supply water from the downstream pool, with a maximum water supply flow rate of 0.05m3 / s;

[0045] The dam construction system includes two winch belt conveyors with lengths of 7.5m and 6m, and a mixer with a length of 1.0m 3 , rolling steel pipe 1 20kg; before each test, all dam-building materials are fully mixed in a mixer, moistened with an atomizing nozzle, and sampled and weighed to ensure that the moisture content of the dam-building materials is consistent. Then, a belt conveyor is used to transport the mixed dam-building materials to the water tank for dam-building according to the designed dam body size, with each 20cm thick layer, and rolled back and forth with a steel pipe 5 times; the trench is excavated using a pre-buried customized plexiglass trench, and a level is used to review and correct after the excavation is completed;

[0046] The purchased sand is screened according to the material grade of the dam body, and preliminary work such as turning and drying is carried out, and the materials are weighed and prepared; a mixer is used to mix the sand evenly in the test field, and the sand is transported to the dam body of the test water tank by a belt conveyor; the dam body is filled in layers manually, and a 20kg steel pipe is used for rolling after each 20cm thick layer is laid until the dam body is completed; after the dam body is filled, a diversion channel is excavated, and the elevation of the channel bottom is verified with a level.

[0047] In this embodiment, the method of selecting the sand material data according to the Shields parameter to obtain the dam body material includes:

[0048] The sediment transport intensity is expressed by the Shields parameter, which is expressed as:

[0049]

[0050] The water conservancy radius is R b , the bed shear stress is τ b , the weight of sediment is γ s , the water density is γ, the median particle size of the sediment is d, the sediment transport intensity is θ, the hydraulic slope is J, the flow velocity is u, and the roughness is n.

[0051] In this embodiment, the method for controlling the water content of the sand material data to obtain the control data includes:

[0052] Input the sand material data into the moisture content control model and calculate the moisture content of the sand material data:

[0053]

[0054] The moisture content of the a-th sand material data is f a , the i-th sand material particle size mass in the a-th sand material data is U a,i , the total mass of the sand material particle size in the a-th sand material data is U a , the mass of dry sand in the ath sand material data is Q a,s , the water mass in the a-th sand material data is Q a,w , the number of sand particles is N i ;

[0055] The sand material data with a water content between 2% and 10% are regarded as qualified sand material data, and the qualified sand material data are used to conduct a simulation test of dam construction to obtain test data;

[0056] Calculate the beneficial ratio of qualified sand material data based on the test data:

[0057]

[0058] The weight coefficients are The volume of the dam material is V, and the volume of the solid particles of the qualified sand material data is V 1 The cross-sectional area of ​​the dam material is S, and the maximum force on the dam material during compression failure is F. c The maximum force on the dam material during tensile failure is F t The maximum force that the material is subjected to during shear failure is F s , the head difference is Δd, and the saturated permeability of the dam material is β 1 , the effective saturation of the dam material is Y, and the relative permeability of the dam material is β 2 , the flow coefficient is The acceleration of gravity is g, and the benefit ratio of the ath qualified sand material data is

[0059] The moisture content is continuously adjusted and the beneficial ratio is recalculated until the beneficial ratio is greater than 0.432, and the qualified sand material data after the adjustment that meets the conditions is output as the control data.

[0060] In this embodiment, the method of configuring dam-building materials according to the sediment transport intensity using similar proportions includes:

[0061] When sediment transport satisfies Shields similarity, the similarity of the phenomenon is guaranteed, and the relationship between the converted particle size similarity scale and the geometric scale is obtained, and the expression is:

[0062]

[0063] The particle size ratio is k b , the geometric scale is L;

[0064] According to the relationship between the converted particle size similarity scale and the geometric scale, the geometric scale of the model and prototype is selected according to the test site and water supply capacity, the similarity criterion is obtained, and the dam construction materials are configured according to the similarity criterion.

[0065] Figure 2 This is a schematic diagram of the structure of an electronic device according to an embodiment of the present application. Figure 2 At the hardware level, the electronic device includes a processor, and optionally also includes an internal bus, a network interface, and a memory. The memory may include a memory, such as a high-speed random access memory (RAM), and may also include a non-volatile memory (non-volatile memory), such as at least one disk storage. Of course, the electronic device may also include hardware required for other services.

[0066] The processor, network interface and memory can be interconnected through an internal bus, which can be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus or an EISA (Extended Industry Standard Architecture) bus. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, Figure 2 Only one bidirectional arrow is used in the diagram, but this does not mean that there is only one bus or only one type of bus.

[0067] The memory is used to store the program. Specifically, the program may include a program code, and the program code includes a computer operation instruction. The memory may include a memory and a non-volatile memory, and provides instructions and data to the processor.

[0068] The processor reads the corresponding computer program from the non-volatile memory into the memory and then runs it, forming a device for designing materials for the breach of a dam at a logical level. The processor executes the program stored in the memory and is specifically used to execute any of the aforementioned methods for designing materials for the breach of a dam.

[0069] The above application Figure 1A method for designing materials for a dam body that can cause a landslide to break disclosed in the illustrated embodiment can be applied to a processor or implemented by a processor. The processor may be an integrated circuit chip that has the ability to process signals. In the implementation process, each step of the above method can be completed by an integrated logic circuit of hardware in the processor or by instructions in the form of software. The above processor may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in a decoding processor. The software module can be located in a storage medium mature in the art such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0070] The electronic device may also perform Figure 1 A design method for dam body materials in the field of landslide dam breach and its realization Figure 1 The functions of the illustrated embodiment will not be described in detail in the embodiments of the present application.

[0071] An embodiment of the present application also proposes a computer-readable storage medium, which stores one or more programs, and the one or more programs include instructions. When the instructions are executed by an electronic device including multiple application programs, any of the aforementioned methods for designing materials for a dam body that is prone to collapse is executed.

[0072] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0073] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, 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 generate 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 flowchart and / or block diagram. 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.

[0074] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate 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 A function specified in one or more boxes.

[0075] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions 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.

[0076] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0077] The memory may include non-permanent storage in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0078] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0079] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity 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, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0080] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0081] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for designing materials for a dam breach, characterized in that: The following steps are involved: Collecting sand material data of the material gradation pair of the breached dam body, and pre-processing the sand material data; Controlling the water content of the sand material data to obtain control data, and conducting a dam construction simulation test according to the control data; The dam-building materials are configured in similar proportions according to the sediment transport intensity, and the dam body materials are output.

2. A method for designing materials for a dam breach according to claim 1, characterized in that: The method for obtaining the dam body material by selecting the sand material data according to the Shields parameter includes: The sediment transport intensity is expressed by the Shields parameter, which is expressed as: The water conservancy radius is R b , the bed shear stress is τ b , the weight of sediment is γ s , the water density is γ, the median particle size of the sediment is d, the sediment transport intensity is θ, the hydraulic slope is J, the flow velocity is u, and the roughness is n.

3. A method for designing materials for a dam breach according to claim 1, characterized in that: The method for controlling the water content of the sand material data to obtain control data comprises: Input the sand material data into the moisture content control model and calculate the moisture content of the sand material data: The moisture content of the a-th sand material data is f a , the i-th sand material particle size mass in the a-th sand material data is U a,i , the total mass of the sand material particle size in the a-th sand material data is U a , the mass of dry sand in the ath sand material data is Q a,s , the water mass in the a-th sand material data is Q a,w , the number of sand particles is N i ; The sand material data with a water content between 2% and 10% are regarded as qualified sand material data, and the qualified sand material data are used to conduct a simulation test of dam construction to obtain test data; Calculate the beneficial ratio of qualified sand material data based on the test data: The weight coefficients are l1, l2, l3, l4, l5, the volume of the dam material is V, the solid particle volume of the qualified sand material data is V1, the cross-sectional area of ​​the dam material is S, and the maximum force on the dam material during compression failure is F. c The maximum force on the dam material during tensile failure is F t The maximum force that the material is subjected to during shear failure is F s , the head difference is Δd, the saturated permeability of the dam material is β1, the effective saturation of the dam material is Y, the relative permeability of the dam material is β2, and the flow coefficient is The acceleration of gravity is g, and the benefit ratio of the ath qualified sand material data is The moisture content is continuously adjusted and the beneficial ratio is recalculated until the beneficial ratio is greater than 0.432, and the qualified sand material data after the adjustment that meets the conditions is output as the control data.

4. A method for designing materials for a dam breach according to claim 1, characterized in that: The method of configuring dam-building materials in similar proportions according to the sediment transport intensity comprises: When sediment transport satisfies Shields similarity, the similarity of the phenomenon is guaranteed, and the relationship between the converted particle size similarity scale and the geometric scale is obtained, and the expression is: The particle size ratio is k b , the geometric scale is L; According to the relationship between the converted particle size similarity scale and the geometric scale, the geometric scale of the model and prototype is selected according to the test site and water supply capacity, the similarity criterion is obtained, and the dam construction materials are configured according to the similarity criterion.

5. An electronic device comprising: processor; as well as A memory arranged to store computer executable instructions, which when executed cause the processor to perform the method according to any one of claims 1 to 4.

6. A computer-readable storage medium storing one or more programs, which, when executed by an electronic device including a plurality of application programs, enables the electronic device to execute the method according to any one of claims 1 to 4.

Images