Fractured rock mass seepage simulation method and system based on near-field dynamics

A fissured rock mass and seepage simulation technology, applied in the field of geotechnical engineering, can solve the problems of lack of simulation theory and calculation methods for fractured rock mass seepage, and achieve the effect of improving calculation efficiency and effective simulation

Pending Publication Date: 2020-12-25
SHANDONG UNIV
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although peridynamics has achieved a good research foundation in the deformation and failure of homogeneous materials and the simulation of seepage in porous media, there is still a lack of effective simulation theory

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fractured rock mass seepage simulation method and system based on near-field dynamics
  • Fractured rock mass seepage simulation method and system based on near-field dynamics
  • Fractured rock mass seepage simulation method and system based on near-field dynamics

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] In this example, a hollow cylindrical specimen is used to carry out numerical simulation research of water injection test. The test radius is 25mm, and a water injection hole with a radius of 2mm is reserved in the middle; the density of the specimen is 2090kg / m 3 , the elastic modulus is 5GPa, the Poisson's ratio is 1 / 3, the critical elongation is 0.001, the porosity is not 0.5, the Biot coefficient is 1.0, and the fluid density is 1000kg / m 3 , the viscosity coefficient is 0.899Pa·s, and the compressibility coefficient is 0.0485; the test water injection rate is carried out in the form of pressure increment, and its size is 10kPa / s.

[0035] Such as figure 1 Shown is a schematic diagram of the theoretical model of double coverage of peridynamic material points, in which 1 is a solid layer, 2 is a fluid layer, and 3 is a crack; the model is jointly formed by the solid layer 1 and the fluid layer 2. The volume of the rock mass is discretized into a certain number of mat...

Embodiment 2

[0078] This embodiment provides a peridynamics-based seepage simulation system for fractured rock mass, including:

[0079] The discretization module is used to construct the fluid-solid coupling model of fractured rock mass including solid layer and fluid layer based on peridynamics, and discretize the fluid-solid coupling model of fractured rock mass into multiple material points according to rock mass material and rock mass volume ;

[0080] The solving module is used to solve the solid layer to obtain the elongation rate of the solid bond of the material point, judge whether the elongation rate of the solid bond of the material point meets the failure condition, and obtain the local damage degree of the rock mass;

[0081] The iterative module is used to solve the fluid layer to obtain the fracture permeability of the fluid layer. The pore water pressure obtained according to the fracture permeability is used as the initial condition of the solid layer in the next iteratio...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
Densityaaaaaaaaaa
Elastic modulusaaaaaaaaaa
Viscosity coefficientaaaaaaaaaa
Login to view more

Abstract

The invention discloses a fractured rock mass seepage simulation method and system based on near-field dynamics. The method comprises the steps: building a fractured rock mass fluid-solid coupling model comprising a solid layer and a fluid layer based on the near-field dynamics, and discretizing the fractured rock mass fluid-solid coupling model into a plurality of material points according to a rock mass material and a rock mass volume; solving the solid layer to obtain the elongation of the solid bonds of the material points, judging whether the elongation of the solid bonds of the materialpoints meets the damage condition or not, and obtaining the local damage degree of the rock mass; solving the fluid layer to obtain the fracture permeability of the fluid layer, taking the pore waterpressure obtained according to the fracture permeability as the initial condition of the solid layer in the next iteration time step until the fractured rock mass seepage process is completed, obtaining the rock mass local damage condition, and outputting the whole process to simulate the fractured rock mass seepage. Effective simulation of the seepage behavior of the fractured rock mass under thefluid-solid coupling effect is achieved.

Description

technical field [0001] The invention relates to the technical field of geotechnical engineering, in particular to a method and system for simulating seepage of fractured rock mass based on peridynamics. Background technique [0002] The statements in this section merely provide background information related to the present invention and do not necessarily constitute prior art. [0003] There are a large number of pores and fissures in natural rock mass. Under the action of groundwater seepage, not only the strength of rock mass is reduced, but also the expansion of fissures is aggravated. In geotechnical engineering activities, the seepage of fractured rock mass is one of the important factors that induce geological disasters such as surrounding rock instability, structural damage, and rock mass collapse. Theoretical basis and scientific basis. Numerical simulation has the advantages of strong visualization and good repeatability. Establishing an efficient numerical analys...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06F30/28G06F119/14
CPCG06F30/28G06F2119/14Y02A10/40
Inventor 李术才高成路周宗青李利平王利戈王美霞李卓徽张道生白松松
Owner SHANDONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap