A Simulation Method of Soil Internal Erosion Deformation Response

A simulation method and soil technology, applied in soil material testing, sampling, instruments, etc., to achieve the effect of high simulation efficiency, high accuracy and speeding up the simulation speed
CN113237722BActive Publication Date: 2022-04-22CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Publication Date
2022-04-22

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Abstract

The invention discloses a soil internal erosion deformation response simulation method, comprising the following steps: S1: collecting a soil sample, constructing a numerical simulation sample model, and pressurizing the numerical simulation sample model according to the actual stress state of the soil Consolidation; S2: Calculate the stress reduction coefficient of each fine particle in the numerical simulation sample model; S3: Generate the statistical distribution map of the stress reduction coefficient of fine particles in the numerical simulation sample model; S4: Calculate the fine particle in the soil sample The critical value of the stress reduction coefficient of particle erosion is to determine the total amount of fine particle erosion; S5: determine the erosion deformation sample model; S6: determine the strength characteristics and deformation characteristics of the erosion deformation sample model; S7: determine the total amount of fine particle erosion , strength characteristics and deformation characteristics as the simulation results of soil internal erosion deformation response. The invention judges the erodible particles based on the stress state of the particles and the hydraulic gradient to be applied, which conforms to the actual erosion conditions.
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Description

technical field

[0001] The invention belongs to the technical field of simulation of soil erosion response, and in particular relates to a simulation method of soil internal erosion deformation response. Background technique

[0002] As one of the main forms of instability of earth-rock dams and dams, seepage failure often occurs in poorly graded cohesionless soils. Under the action of seepage damage, the fine particles in poorly graded cohesionless soil are easily eroded by water flow, which affects the physical and mechanical properties of the soil, and even leads to the destruction of the soil structure. Quickly determine the erosion characteristics of poorly graded cohesionless soil materials under the action of different seepage fields, and conduct effective simulation and analysis of their post-erosion responses, which are important for seepage safety assessment and emergency treatment of dam foundations and dams. meaning.

[0003] Reasonably determining the erosion ...

Claims

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