Soil-geotextile system interaction

Mlynarek, J; BogumiłLewandowski, J.; Rollin, A. L.; Bolduc, G.F.

doi:10.1016/0266-1144(91)90027-t

Cited by 10 publications

(7 citation statements)

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“…The changes of grain size distributions near nonwoven geotextile described above are associated with formulation of filter cake (Figure 14), as described by other authors [9,12,27]. The changes of grain size distributions near nonwoven geotextile described above are associated with formulation of filter cake (Figure 14), as described by other authors [9,12,27]. The application of HYDRUS (2D/3D) software allows one to calculate and present the piezometric pressure ( Figure 15).…”

Section: Samplementioning

confidence: 82%

“…Młynarek et al [9] described the changes occurring on the contact surface of the nonwoven fabric and soil, during several hours of observation reproducing the operation of the nonwoven fabric as a separation and filtration layer. The migration of the smallest particles causes a decrease of the water permeability coefficient of the nonwoven fabric and the formation of a reverse filter at the interface between the non-woven fabric and soil.…”

Section: Introductionmentioning

confidence: 99%

“…The proper operation of geotextile as filtering layers requires that the processes should proceed according to the characteristics of I or II. Młynarek et al [9] noted that due to the interaction between soil and geotextile, the most important period is the initial period of filtration when the processes of outflowing particles and stabilization take place the most intensively (in the study conditions of about 20 hours). During the operation of the geotextile as a filtering layer, due to changes occurring, we can distinguish five characteristic periods: migration of soil particles, flow of the finest particles, formation of filter/non-woven structure (filter cake), fine particle retention in geotextile (clogging), and stabilization of the protected ground.…”

Section: Introductionmentioning

confidence: 99%

“…These processes usually are not linear and the duration of each of them depends on the volume flow of water flowing through the surface of geotextile Q/A (m 3 s −1 m −2 ). However, it can be assumed that in a sufficiently long period of operation, the drainage work stabilizes [9].…”

Section: Introductionmentioning

confidence: 99%

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Small Dam Drainage with Nonwoven Geotextile after 40 Years of Exploitation

2019

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Synthetic materials such as nonwovens, mats and membranes have been commonly used in civil engineering for many years. The changes of geotextile characteristics in time (permeability, porosity, etc.) are poorly understood. Many authors have presented the changes in the properties of synthetic materials, mainly based on laboratory tests. The studies on geotextile samples taken from working hydraulic structures are not so many. Over 40 years, the reduction in the permeability of nonwoven geotextile was about four-fold. Probably the reason for that reduction is mechanical clogging caused by fine particles which have moved from the earth dam soil to the nonwoven geotextile. Over 40 years of operations, despite the reduction in permeability of the nonwoven geotextile, the drainage worked properly. The experiment was conducted in the field and laboratory and a two-dimensional numerical model built in software package HYDRUS (two-dimensional/three-dimensional (2D/3D)) Standard was proposed. The field measurements allow calibration and validation of the numerical model. The conducted simulations showed that at a maximum water level in the reservoir equal to 3.32 m, the water supply to the drainage is higher from upstream than from downstream. Particularly, water supply from above to the drainage is absent.

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Section: Samplementioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Small Dam Drainage with Nonwoven Geotextile after 40 Years of Exploitation

2019

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“…The system design must fulfill the filtration and drainage criteria. A number of reports have discussed the performance of geosynthetic materials for filtration and drainage applications (1)(2)(3)(4). They concluded that the materials tested all showed acceptable results.…”

Section: Materials Selection Criteriamentioning

confidence: 99%

New Method to Stabilize the Uplift-Pressure Problem for Raft Foundations

Chang

Chang²,

Tung³

et al. 2000

Transportation Research Record: Journal of the Transportation R

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In Taipei City, the deep-raft foundation is the most common foundation type for typical commercial buildings. It is known that deep-raft foundations below a high groundwater table are associated with uplift-pressure problems. Conventional solutions, such as increased dead weight, tension piles, or ground anchors, are costly, time consuming, and sometimes inefficient. A successful approach using a geosynthetic system to stabilize and relieve the hydrostatic uplift pressure within the impervious strata is presented. Filtration, clogging, transmissivity, and other properties of geosynthetics are specified to assure the dissipation of uplift pressure in the long run. The design concept was applied in practice to a multistory commercial complex. Two typical cases are introduced. Monitoring results are also covered. Based on the site experience, the installation of this system was found to be rapid, simple, and cost-effective.

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Engineering characteristics of crushed stone and coal ash mixture compaction piles

Chun

2012

KSCE J Civ Eng

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Soil-geotextile system interaction

Cited by 10 publications

References 0 publications

Small Dam Drainage with Nonwoven Geotextile after 40 Years of Exploitation

Small Dam Drainage with Nonwoven Geotextile after 40 Years of Exploitation

New Method to Stabilize the Uplift-Pressure Problem for Raft Foundations

Engineering characteristics of crushed stone and coal ash mixture compaction piles

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