Ground Sediment Transport Model and Numerical Simulation

Sun, Jichao

doi:10.15244/pjoes/60766

Cited by 6 publications

(7 citation statements)

References 10 publications

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“…2a, b.. There is also a significant source of sediment: internal riverbank and under land, which is from the underground and can be called ground sediment (Sun 2015(Sun , 2016Sun & Wang 2013;Wang et al 2010Wang et al , 2011, as shown in Fig. 2c.. Research on ground sediment is a new research area, and the typical performance in this area is the riverbank stability reduction and collapse by the ground sediment transport under the scouring and the fluctuation water level.…”

Section: Three Levels Of Sedimentmentioning

confidence: 99%

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Survey and research frame for ground sediment

Sun

2016

Environ Sci Pollut Res

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Section: Three Levels Of Sedimentmentioning

confidence: 99%

“…Sediment is mainly from the land and river, as well as sediment from the underground called Bground sediment.^Sediment, hidden in the underground, is not known to people. The sediment particle transport in soils by water scouring can be found in the reference Sun (2016). Some or one soil particle runs in a crack and passageway between soil particles.…”

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confidence: 99%

Survey and research frame for ground sediment

Sun

2016

Environ Sci Pollut Res

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“…Specifically, the discrete element method has some branches. For example, the commercial software of the sphere discrete element method [9][10][11][12] is PFC and Yade, esys-particle and LIGGGHTS (Figure 1); the commercial software of the discontinuous medium (jointed rock mass) discrete element method [13][14][15] is UDEC/3DEC, FLAC and EDEM, the discrete lattice points discrete element method [2,16], such as Xsite. However, the particle discrete element method (PDEM) is more widely used in materials processing.…”

Section: Introductionmentioning

confidence: 99%

Modeling the Simultaneous Effects of Particle Size and Porosity in Simulating Geo-Materials

Sun

Huang

2022

Materials

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The particle discrete element method (PDEM) is widely used to simulate rock and soil materials to obtain stress and strain. However, there are three shortcomings: (1) Single sphere or ellipsoids directly replace the soil particles; (2) it treats the diameters of spheres or ellipsoids as the soil particle size; (3) the overlapping particle volume is not deducted in calculating the porosity. Hence, it is difficult for the simulation of the geological body to agree with reality. This research found a rotation calculation model and a pixel counting method to make joint soil particles more accurately simulate geological materials to solve the three shortcomings. The model successfully obtained the gradation curve and porosity of the simulated geological body with joint particles. This research will further enrich and broaden the application prospects of PDEM and provide a reference for scientific research and engineering fields in geological engineering, geotechnical engineering, and petroleum engineering.

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“…The sediment particles in a fissure can be called the underground sediment. The sediment composed of soil particles from the interior of soils 2,3 , rock fissures, porous soils 4 , riverbanks and some other sources constitutes underground sediment. Silt and scour may be created during the movement of underground sands, which block and dredge fissures 5 .…”

Section: Introductionmentioning

confidence: 99%

Hard particle force in a soft fracture

Sun

2019

Sci Rep

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The fissure patency of a rock mass is an important factor contributing towards the fluid production efficiency. Debris particles generated by the crushing of rock masses or other external forces can cause blockage or promote the smoothness of rock fractures. It is of immense theoretical and engineering value to analyze the mechanics of particles in rock fissures, especially under the compression of rock from both sides. In this study, through static analysis, the resultant force of particles in rock fissures is extruded by rock on both sides. The following conclusions are drawn: The resultant force increases first and then decrease with the increase of fissure angle and width when x is constant. The extreme point is at sin θ = R /(3 x ), h = 2 R (9 x 2 − R 2 ) 0.5 /(9 x ) and the maximum of F is 8 πkR 4 /(27 x ). Whereas, the bigger the joint roughness coefficient ( JRC ) of fissure is, the larger the average of fissure open angle is and the larger the average width is. As the JRC increases, the average resultant force decreases. The sharp point at the turning point of the fissure is easily broken, and the fissure width becomes larger, which makes the resultant force decrease. The analysis process expands the application prospects of the JRC . The results help to better understand the blockage and transport of particles in rock fissures.

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Ground Sediment Transport Model and Numerical Simulation

Cited by 6 publications

References 10 publications

Survey and research frame for ground sediment

Survey and research frame for ground sediment

Modeling the Simultaneous Effects of Particle Size and Porosity in Simulating Geo-Materials

Hard particle force in a soft fracture

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