Numerical Simulation of Soil Levee Slope Instability Using Particle-Flow Code Method

2019 ◽  
Vol 20 (2) ◽  
pp. 04019001 ◽  
Author(s):  
Huaizhi Su ◽  
Zhaoqing Fu ◽  
Ang Gao ◽  
Zhiping Wen
Keyword(s):  
Numerical Simulation ◽  
Slope Instability ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Particle Flow Code Method ◽  
Soil Levee

Numerical Simulation of Vibration Sieve Based on DEM

2012 ◽  
Vol 482-484 ◽  
pp. 1358-1361
Author(s):  
Yue Jing Zhao ◽  
Zhi Ying Qin
Keyword(s):  
Numerical Simulation ◽  
Discrete Element Method ◽  
Special Kind ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Screening Process ◽  
Vibration Direction ◽  
Sieve Effect ◽  
Screening Efficiency ◽  
Particle Group

Vibrating sieve is a special kind of equipment which used to grading materials according to particle granularity. By the vibration acted on the sieve, the materials are loosed, are divided into layers, are transported and are permeated the sieve to screen the materials. Discrete Element Method (DEM) has been an effective numerical method to research the granule system motion. Using Particle Flow Code (PFC) based DEM, the screening process, the particle group motions on the screen, are simulated. How the amplitude, the frequency of vibration, the vibration direction angle, the decline degree of sieve effect screening efficiency are presented.

Meso-Mechanical Simulation of Fracture Grouting under Fluid-Solid Coupling Environment and Engineering Applications

2013 ◽  
Vol 477-478 ◽  
pp. 485-491 ◽  
Author(s):  
Feng Sun ◽  
Rong Pan ◽  
Xiu Yun Zhu ◽  
Tie Lin Chen
Keyword(s):  
Numerical Simulation ◽  
Soil Properties ◽  
Bearing Capacity ◽  
Field Test ◽  
Particle Flow ◽  
Particle Flow Code ◽  
Engineering Applications ◽  
Weathered Rock ◽  
Grouting Pressure ◽  
Fracture Grouting

Due to the complication of grouting process in soil, design of fracture grouting works is still mainly based on empirical considerations and experiences from past projects. Based on the theory of particle flow, the domain of flow is defined by using Fish language implemented in PFC and the formulas for flow and pressure are put forward respectively. Combined with above study, the process of fracture grouting in soil is simulated with particle flow code (PFC2D) from micro-viewpoint under coupling environment. In addition, the emergence and development of crack and grouting pressure in soil is analyzed under different grouting pressure and soil properties. The research results show that pressure plays a key role in consolidating the soil by fracture grouting, but in fact it should be kept in a reasonable value in order to forming grouting slurry net entirely. Filed test indicates that fracture grouting greatly increases the bearing capacity of weathered rock in Xiamen Xiangan subsea tunneling and the conclusions of numerical simulation agrees well with the field test and grouting theory.

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