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Journal articles on the topic 'Long-term hydraulic conductivity'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Al-Mahbashi, Ahmed M., Muawia Dafalla, and Mosleh Al-Shamrani. "Long-Term Performance of Liners Subjected to Freeze-Thaw Cycles." Water 14, no. 20 (2022): 3218. http://dx.doi.org/10.3390/w14203218.

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The technique of using clay-sand mixtures as liners has been widely used in several geotechnical projects where hydraulic barriers or waste-buffer layers are required. During weather fluctuations and below-zero temperature conditions, these layers can be subjected to successive freeze-thaw cycles. The serviceability of such liners needs to be examined during their lifetime for efficiency and function under such suspected weather conditions. The hydraulic conductivity over the long run needs to remain within the acceptable design ranges. In this study, the efficiency of two different clay-sand

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2

Azooz, R. H., and M. A. Arshad. "Soil infiltration and hydraulic conductivity under long-term no-tillage and conventional tillage systems." Canadian Journal of Soil Science 76, no. 2 (1996): 143–52. http://dx.doi.org/10.4141/cjss96-021.

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Long-term tillage practices may affect crop growth, in part by changing soil hydraulic properties. The hypothesis that long-term no-till (NT) and conventional tillage (CT) practices affect soil infiltration and hydraulic conductivity was evaluated on silt loam and sandy loam soils (both Gray Luvisols). Ponded soil infiltration, water content and marric potential were measured in the field during 1992 and 1993. In most cases, the ponded soil infiltration rates (i) were significantly lower (P ≤ 0.05) under the CT than under the NT for both soils. Total volume of soil pores with radii < 14 μm

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3

Bortolami, Giovanni, Elena Farolfi, Eric Badel, et al. "Seasonal and long-term consequences of esca grapevine disease on stem xylem integrity." Journal of Experimental Botany 72, no. 10 (2021): 3914–28. http://dx.doi.org/10.1093/jxb/erab117.

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Abstract Hydraulic failure has been extensively studied during drought-induced plant dieback, but its role in plant-pathogen interactions is under debate. During esca, a grapevine (Vitis vinifera) disease, symptomatic leaves are prone to irreversible hydraulic dysfunctions but little is known about the hydraulic integrity of perennial organs over the short- and long-term. We investigated the effects of esca on stem hydraulic integrity in naturally infected plants within a single season and across season(s). We coupled direct (ks) and indirect (kth) hydraulic conductivity measurements, and tylo

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4

S, MAHIMAIRAJA, HELKIASH J, and GOPALSWAMY A. "LONG TERM EFFECT OF GRADED DOSES OF FERTILIZERS AND MANURES ON SOIL PHYSICAL CONDITIONS." Madras Agricultural Journal 73, june (1986): 340–47. http://dx.doi.org/10.29321/maj.10.a02280.

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Long form application of graded doses of NPK fertilizers did not have signi ficant influence on bulk density and porespace, but significantly influenced the hydraulic conductivity and to some extent the soil nagrogate parameters. The combined application of inorganic fertilizers with organic manures viz., FYM impro- ved the physical condition of soil by increasing the hydraulic conductivity, poro- sity and aggregation and reducing the bulkdensity of soils. The improvement in Physical condition of soil due to the combined application of inorganic fortilizers and organic manures was reflected in

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Chihi, Feten, Gabriella Varga, and Katalin Kopecskó. "Long-Term Effects of Municipal Solid Waste Leachate on Soil Hydraulic Properties." Geotechnics 5, no. 1 (2025): 14. https://doi.org/10.3390/geotechnics5010014.

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This experimental study examines the effects of landfill leachate contamination on soil hydraulic conductivity over a 12-month period, addressing the current lack of long-term experimental data in this field. Laboratory permeability tests were performed on sandy clayey silt samples contaminated with leachate at concentrations ranging from 5% to 25%. Microstructural and mineralogical analyses were conducted using SEM and XRD to identify the mechanisms behind observed changes. The results identify a critical threshold at 15% contamination, where soil behavior transitions from granular to cohesiv

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Tang, Q., H. Y. Wang, H. Chen, P. Li, X. W. Tang, and T. Katsumi. "Long-term hydraulic conductivity of compacted clay permeated with landfill leachates." Japanese Geotechnical Society Special Publication 2, no. 53 (2016): 1845–48. http://dx.doi.org/10.3208/jgssp.chn-52.

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7

Desouky, Mahmoud, Murtada Saleh Aljawad, Theis Solling, Amao Abduljamiu, Kion Norrman, and Dhafer Alshehri. "Improving long-term hydraulic fracture conductivity by alteration of rock minerals." Journal of Petroleum Science and Engineering 196 (January 2021): 108046. http://dx.doi.org/10.1016/j.petrol.2020.108046.

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8

Francisca, F. M., and D. A. Glatstein. "Long term hydraulic conductivity of compacted soils permeated with landfill leachate." Applied Clay Science 49, no. 3 (2010): 187–93. http://dx.doi.org/10.1016/j.clay.2010.05.003.

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9

Xie, Mingliang, Dirk Aldenkortt, Jean-Frank Wagner, and Gerhard Rettenberger. "Effect of plastic fragments on hydraulic characteristics of pretreated municipal solid waste." Canadian Geotechnical Journal 43, no. 12 (2006): 1333–43. http://dx.doi.org/10.1139/t06-070.

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A systematic study was undertaken of the granular composition and hydraulic properties of municipal solid waste (MSW) produced by mechanical–biological pretreatment (MBP–MSW) from three different treatment plants with the aim of evaluating the potential application of MBP–MSW as an alternative barrier material for landfill final cover systems. Despite its coarse granular composition, MBP–MSW has low hydraulic conductivity. Long-term permeability tests show that the hydraulic conductivity decreases with time. The most likely explanation for the long-term changes in permeability is the swelling

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10

Singh, Baldev, D. S. Chanasyk, and W. B. McGill. "Soil hydraulic properties of an Orthic Black Chernozem under long-term tillage and residue management." Canadian Journal of Soil Science 76, no. 1 (1996): 63–71. http://dx.doi.org/10.4141/cjss96-010.

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The effects of tillage on soil hydraulic properties are unclear from the literature and residue effects are little reported. The hydraulic properties of an Orthic Black Chernozem under three tillage-residue systems in central Alberta — tillage with straw incorporated (till+straw) or removed (till−straw) — and no tillage with straw on the surface (no till+straw) — were studied for 2 yr. Measurements began in the 9th year of continuous barley (Hordeum vulgare L.).Plant-available water capacity differed among treatments only in the 0–2.5 cm layer, due to differences in water retention at −1500 kP

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11

Tan, C. S., C. F. Drury, W. D. Reynolds, J. D. Gaynor, T. Q. Zhang, and H. Y. Ng. "Effect of long-term conventional tillage and no-tillage systems on soil and water quality at the field scale." Water Science and Technology 46, no. 6-7 (2002): 183–90. http://dx.doi.org/10.2166/wst.2002.0678.

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No-tillage (NT) is becoming increasingly attractive to farmers because it clearly reduces soil erosion and production costs relative to conventional tillage (CT). However, the impacts of no-tillage on the quantity and quality of tile drainage water are less well known. Accordingly, two adjacent field scale on-farm CT and NT sites were established to compare the impacts of the two tillage systems on tile drainage and NO3-N loss in tile drainage water. The effect of the two tillage systems on soil structure, hydraulic conductivity, and earthworm population were also investigated. The total NO3-N

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12

Kohno, Masanori, Yoshitaka Nara, Masaji Kato, and Tsuyoshi Nishimura. "Effects of clay-mineral type and content on the hydraulic conductivity of bentonite–sand mixtures made of Kunigel bentonite from Japan." Clay Minerals 53, no. 4 (2018): 721–32. http://dx.doi.org/10.1180/clm.2018.52.

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ABSTRACTClay-mineral type and content, bulk mineralogical composition and alteration of bentonite are very important factors for the ultra-long-term stabilization of barriers and backfills in radioactive waste disposal. This study investigates the effects of clay-mineral type and content on the swelling characteristics and permeability of bentonite–sand mixtures with clay minerals using one-dimensional swelling-pressure and constant-pressure permeability tests. The hydraulic conductivity of bentonite–sand–clay mineral mixtures increased with increasing content of non-swelling alteration produc

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13

Chen, Qing, Zhiqiang Huang, Hao Huang, et al. "An Experimental Study on the Impact of the Particle Size and Proportion of Composite Proppant on the Conductivity of Propped Fractures in Coalbed Methane Reservoirs following Pulverized Coal Fines Infiltration." Processes 11, no. 7 (2023): 2205. http://dx.doi.org/10.3390/pr11072205.

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Coalbed methane reservoirs exhibit a low strength and high heterogeneity, rendering them susceptible to coal fines generation during hydraulic fracturing operations. The detrimental impact of coal fines on the conductivity of the propped fracture has been overlooked, leading to a substantial negative effect on the later-stage recovery of coalbed methane reservoirs. Moreover, the particle size distribution of the composite proppant also affects the conductivity of the propped fracture. To mitigate the damage caused by coal fines to the conductivity of the proppant pack in CBM reservoirs, this s

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14

Lozano, Luis Alberto, Carlos Germán Soracco, Vicente S. Buda, Guillermo O. Sarli, and Roberto Raúl Filgueira. "Stabilization of soil hydraulic properties under a long term no-till system." Revista Brasileira de Ciência do Solo 38, no. 4 (2014): 1281–92. http://dx.doi.org/10.1590/s0100-06832014000400024.

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The area under the no-tillage system (NT) has been increasing over the last few years. Some authors indicate that stabilization of soil physical properties is reached after some years under NT while other authors debate this. The objective of this study was to determine the effect of the last crop in the rotation sequence (1st year: maize, 2nd year: soybean, 3rd year: wheat/soybean) on soil pore configuration and hydraulic properties in two different soils (site 1: loam, site 2: sandy loam) from the Argentinean Pampas region under long-term NT treatments in order to determine if stabilization

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15

Cresswell, HP, DE Smiles, and J. Williams. "Soil structure, soil hydraulic properties and the soil water balance." Soil Research 30, no. 3 (1992): 265. http://dx.doi.org/10.1071/sr9920265.

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We review the influence of soil structural change on the fundamental soil hydraulic properties (unsaturated hydraulic conductivity and the soil moisture characteristic) and utilize deterministic modelling to assess subsequent effects on the soil water balance. Soil structure is reflected in the 0 to -100 kPa matric potential section of the soil moisture characteristic with marked changes often occurring in light to medium textured soils' (sands, sandy-loam, loams and clay-loams). The effect of long-term tillage on soil structure may decrease hydraulic conductivity within this matric potential

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16

Araya, Samuel N., Jeffrey P. Mitchell, Jan W. Hopmans, and Teamrat A. Ghezzehei. "Long-term impact of cover crop and reduced disturbance tillage on soil pore size distribution and soil water storage." SOIL 8, no. 1 (2022): 177–98. http://dx.doi.org/10.5194/soil-8-177-2022.

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Abstract. We studied the long-term impact of contrasting tillage and cover cropping systems on soil structure and hydraulic properties. Complete water retention and conductivity curves for the top (0–5 cm) and subsurface (20–25 cm) soils were characterized and contrasted. Dynamic water storage and retention were evaluated using numerical simulations in HYDRUS-2D software. Compared with standard-till (ST) and no-cover-crop (NO) systems, soils under no-till (NT) and cover cropping (CC) systems showed improved soil structure in terms of pore size distribution (PSD). Changes in hydraulic conductiv

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17

Chen, Huali, Guoping Ding, Cheng Hu, Eungyu Park, Yeongkyoo Kim, and Jina Jeong. "A Study on the Recovery of Head and the Total Dissolved Solids (TDS) from Long-Term Pressure Depressions in Low Permeable Coastal Aquifers." Water 11, no. 4 (2019): 777. http://dx.doi.org/10.3390/w11040777.

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Studies on the recovery of head and total dissolved solids (TDS) in a coastal aquifer system from long-term pressure depressions because of groundwater abstraction (e.g., pumping) is essential for freshwater protection and seawater-intrusion prevention in coastal areas. A 2D numerical model is applied in this paper to investigate the recovery of head and TDS in terms of long-term behavior considering low permeability media. The spatial behavior of the transition zone (TZ), which was chosen as an indicator, was studied in depth with respect to the participant hydraulic and solute-transport char

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18

Boldt-Leppin, Brigitte EJ, Moir D. Haug, and John V. Headley. "Use of organophilic clay in sand-bentonite as a barrier to diesel fuel." Canadian Geotechnical Journal 33, no. 5 (1996): 705–19. http://dx.doi.org/10.1139/t96-097-318.

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A laboratory research program was conducted to evaluate the long-term hydraulic performance of sandbentonite liners augmented with organophilic clay and permeated with diesel fuel. This program was also designed to establish guidelines for the incorporation of organophilic clay in sandbentonite liners. The study involved three areas of testing. The first was to characterize the materials. The second was to evaluate various combinations of materials and preparation techniques through hydraulic conductivity tests. The third area involved unconfined infiltration tests. The primary hydraulic con

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Moraci, Nicola, Domenico Ielo, Stefania Bilardi, and Paolo S. Calabrò. "Modelling long-term hydraulic conductivity behaviour of zero valent iron column tests for permeable reactive barrier design." Canadian Geotechnical Journal 53, no. 6 (2016): 946–61. http://dx.doi.org/10.1139/cgj-2015-0453.

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In this paper, a numerical model to simulate the hydraulic conductivity reduction observed during long-term laboratory column tests is proposed. The column tests are carried out to study dissolved heavy metals removal by using granular zero valent iron (ZVI). The proposed model is also used to analyse the main causes of hydraulic conductivity reduction observed during laboratory column tests. Expansive iron corrosion, precipitation of reaction products, and gas formation are the processes considered in the proposed model. Numerical simulation results show that to reproduce hydraulic behaviour

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20

CHANG, C., and C. W. LINDWALL. "EFFECT OF LONG-TERM MINIMUM TILLAGE PRACTICES ON SOME PHYSICAL PROPERTIES OF A CHERNOZEMIC CLAY LOAM." Canadian Journal of Soil Science 69, no. 3 (1989): 443–49. http://dx.doi.org/10.4141/cjss89-046.

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This study was conducted to compare the long-term (20 yr) effects of conventional tillage, minimum tillage and no-till on various soil-water related properties within the tilled layer (0–30 and 30–60 mm) and immediately below the tilled layer (90–120 mm) under a spring cereal-summerfallow rotation cropping system. Parameters measured included saturated hydraulic conductivity, saturation percentage, plant-available water-holding capacity, large pore porosity, bulk density, and infiltration rate of the soil. Tillage treatment effects on these soil properties in each of the four sampling periods

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21

Martíni, Aline Fachin, Gustavo Pereira Valani, Laura Fernanda Simões da Silva, Denizart Bolonhezi, Simone Di Prima, and Miguel Cooper. "Long-Term Trial of Tillage Systems for Sugarcane: Effect on Topsoil Hydrophysical Attributes." Sustainability 13, no. 6 (2021): 3448. http://dx.doi.org/10.3390/su13063448.

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Seeking to provide essential information about sustainable tillage systems, this work aimed to assess the effects of liming and soil cultivation systems on the soil hydrophysical attributes of a long-term cultivated sugarcane field in the tropical region of southeast Brazil. Infiltration tests and soil sampling down to 0.10 m were performed in order to determine saturated soil hydraulic conductivity, soil bulk density, soil total porosity, macroporosity, microporosity, and soil resistance to penetration. The studied areas include no-tillage (NT) and conventional tillage (CT) systems with 0 (CT

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22

Zhang, Wenbing, Lipei Zhou, Wenbo Rao, Xin Xiong, Yiyan Lv, and Yonghua Sha. "Stresses and Permeability in Sand–Attapulgite Cut-Off Walls." Water 16, no. 5 (2024): 692. http://dx.doi.org/10.3390/w16050692.

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The long-term performance of sand–attapulgite cut-off walls in landfills is highly dependent on the permeability of the wall material. Laboratory tests show that the hydraulic conductivity of wall material decreases significantly with the increase in consolidation pressure. Therefore, to accurately estimate the hydraulic conductivity of the cut-off wall in the field, the effective stress must be calculated correctly. In this paper, the ‘modified lateral squeezing model’ is used to calculate the stress distribution of the sand–attapulgite cut-off wall, and the distribution of the hydraulic cond

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23

Cagna, Camila P., Osvaldo Guedes Filho, Alexandre R. C. Silva, and Cássio A. Tormena. "Automation of the measurement of time record in determining the hydraulic conductivity of saturated soil." Revista Brasileira de Engenharia Agrícola e Ambiental 26, no. 2 (2022): 149–55. http://dx.doi.org/10.1590/1807-1929/agriambi.v26n2p149-155.

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ABSTRACT The objective of this study was to automate the acquisition of water travel time, as well as the computation of hydraulic conductivity of saturated soil by the falling head method, using water sensors and the Arduino platform. To automate the measurement of travel time, the Arduino Uno board was used, and two water sensors were installed at the initial (h0) and final (h1) heights of the water inside the core. When the water flows across the soil and the water level passes the bottom part of the initial sensor (h0), the time recording starts; it ends when the water is absent from the f

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Kaur, Jaskirandeep. "Long Term Effect of Organic Cropping Systems on Hydraulic Properties of Soils." International Journal of Environment and Climate Change 13, no. 8 (2023): 11–23. http://dx.doi.org/10.9734/ijecc/2023/v13i81927.

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A field study on long term effect of five organic cropping systems viz. poplar + turmeric (CS1), sugarcane + bottle gourd – broccoli (CS2), basmati – wheat (CS3), sugarcane fodder (CS4) and maize + summer moong - wheat (CS5) on soil hydraulic properties was conducted at Natural Agriculture Farm and Research Centre, Dherekot, Jandiala Guru, Amritsar, Punjab. The depth wise soil samples from these cropping systems were collected after rabi (2018-19) and kharif (2019) seasons. Maximum soil water retentivity (MWR) in CS2 and CS5 was significantly higher than CS1, CS3 and CS4. In 15-22.5 cm soil la

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Scalia, Joseph, Craig H. Benson, Gretchen L. Bohnhoff, Tuncer B. Edil, and Charles D. Shackelford. "Long-Term Hydraulic Conductivity of a Bentonite-Polymer Composite Permeated with Aggressive Inorganic Solutions." Journal of Geotechnical and Geoenvironmental Engineering 140, no. 3 (2014): 04013025. http://dx.doi.org/10.1061/(asce)gt.1943-5606.0001040.

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Jo, Ho Young, Craig H. Benson, Charles D. Shackelford, Jae-Myung Lee, and Tuncer B. Edil. "Long-Term Hydraulic Conductivity of a Geosynthetic Clay Liner Permeated with Inorganic Salt Solutions." Journal of Geotechnical and Geoenvironmental Engineering 131, no. 4 (2005): 405–17. http://dx.doi.org/10.1061/(asce)1090-0241(2005)131:4(405).

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27

Kharel, Geeta, Madhav Dhakal, Sanjit K. Deb, Lindsey C. Slaughter, Catherine Simpson, and Charles P. West. "Effect of Long-Term Semiarid Pasture Management on Soil Hydraulic and Thermal Properties." Plants 12, no. 7 (2023): 1491. http://dx.doi.org/10.3390/plants12071491.

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Semiarid pasture management strategies can affect soil hydraulic and thermal properties that determine water fluxes and storage, and heat flow in unsaturated soils. We evaluated long-term (>10 years) perennial and annual semiarid pasture system effects on saturated hydraulic conductivity (ks), soil water retention curves (SWRCs), soil water thresholds (i.e., volumetric water content (θv) at saturation, field capacity (FC), and permanent wilting point (PWP); plant available water (PAW)), thermal conductivity (λ), and diffusivity (Dt) within the 0–20 cm soil depth. Forage systems included: Ol

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28

Vergni, Lorenzo, Grazia Tosi, Jennifer Bertuzzi, et al. "Using Beerkan Procedure to Estimate Hydraulic Soil Properties under Long Term Agroecosystems Experiments." Applied Sciences 14, no. 9 (2024): 3817. http://dx.doi.org/10.3390/app14093817.

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The BEST (Beerkan Estimation of Soil Transfer parameters) method was used to compare the hydraulic properties of the soils in two Long-term Agroecosystem Experiments (LTAEs) located at the FIELDLAB experimental site of the University of Perugia (central Italy). The LTAE “NewSmoca” consists of a biennial maize-durum wheat crop rotation under integrated low-input cropping systems with (i) inversion soil tillage (INT) or (ii) no-tillage (INT+) and (iii) under an organic cropping system with inversion soil tillage (ORG). ORG and INT+ involve the use of autumn-sown cover crops (before the maize cyc

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Li, Ying, and Dong-Zi Pan. "A Simulation of Salt Transport in NaCl-Laden Soil Barrier to Control Subterranean Termites in an Earth Embankment." Water 13, no. 9 (2021): 1204. http://dx.doi.org/10.3390/w13091204.

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Subterranean termite activity can increase the hydraulic conductivity and water infiltration of filling soil, and therefore affects the stability of an earth embankment and subsequent safety. As a physical barrier for sustainable termite management, NaCl-laden soil barrier (NLSB) is a promising alternative for subterranean termite control in earth embankments. This novel technology can prevent tunneling and penetration of subterranean termites into the interior of an embankment and has been widely employed for more than 20 years in Zhejiang Province, China. The efficacy and longevity of NLSB d

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Bilardi, Stefania, Paolo S. Calabrò, and Nicola Moraci. "Reactive and Hydraulic Behavior of Granular Mixtures Composed of Zero Valent Iron." Water 14, no. 22 (2022): 3613. http://dx.doi.org/10.3390/w14223613.

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Zero valent iron (ZVI) is widely used in permeable reactive barriers (PRBs) for the remediation of contaminated groundwater. The hydraulic conductivity of ZVI can be reduced due to iron corrosion processes activated by water and its constituents including pollutants. To overcome this issue, ZVI particles can be mixed with granular materials that avoid a drastic reduction in the hydraulic conductivity over time. In light of the most recent studies concerning iron corrosion processes and recalling the basic principles of century-old chemistry of iron corrosion, we have revised the results of 24

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Beal, Cara D., Ted Gardner, David W. Rassam, Alison M. Vieritz, and Neal W. Menzies. "Effluent flux prediction in variably saturated soil zones within a septic tank—soil absorption trench." Soil Research 44, no. 7 (2006): 677. http://dx.doi.org/10.1071/sr06007.

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The treatment and hydraulic mechanisms in a septic tank–soil absorption system (SAS) are highly influenced by the clogging layer or biomat zone which develops on bottom and lower sidewall surfaces within the trench. Flow rates through the biomat and sub-biomat zones are governed largely by the biomat hydraulic properties (resistance and hydraulic conductivity) and the unsaturated hydraulic conductivity of the underlying soil. One- and 2-dimensional models were used to investigate the relative importance of sidewall and vertical flow rates and pathways in SAS. Results of 1-dimensional modelling

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Sadiki, Nadia, and Dong-Woo Jang. "Estimation of Hydraulic and Water Quality Parameters Using Long Short-Term Memory in Water Distribution Systems." Water 16, no. 21 (2024): 3028. http://dx.doi.org/10.3390/w16213028.

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Predicting essential water quality parameters, such as discharge, pressure, turbidity, temperature, conductivity, residual chlorine, and pH, is crucial for ensuring the safety and efficiency of water supply systems. This study employs long short-term memory (LSTM) networks to address the challenge of capturing temporal dependencies in these complex processes. Our approach, using a robust LSTM-based model, has demonstrated significant predictive accuracy, as evidenced by substantial R-squared values (e.g., 0.86 for discharge and 0.97 for conductivity). These models have proven particularly effe

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Greenwood, K. L., D. A. MacLeod, and K. J. Hutchinson. "Long-term stocking rate effects on soil physical properties." Australian Journal of Experimental Agriculture 37, no. 4 (1997): 413. http://dx.doi.org/10.1071/ea96131.

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Summary. The effects of sheep stocking rate on soil physical properties were investigated in a long-term (>30-year-old) grazing trial on the Northern Tablelands of New South Wales. The soil physical properties studied were unsaturated hydraulic conductivity, soil strength and bulk density. Significant differences between the ungrazed and grazed pastures were found for all soil physical measurements. Compaction by sheep was limited to the upper 5 cm of the soil profile and resulted in lower porosity, mainly due to loss of pores larger than 1.2 mm equivalent diameter. However, after 30 years,

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Gooding, James L. "Geologic perspective for carbon sequestration by woody biomass burial." Science and Technology for Energy Transition 78 (2023): 17. http://dx.doi.org/10.2516/stet/2023014.

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Carbon sequestration by Woody Biomass Burial (WBB) leverages carbon capture through natural photosynthesis, followed by the isolation of dead or fallen wood in a relatively shallow Underground Wood Vault (UWV). Long-term geologic containment, including any greenhouse gas decomposition products, depends on the careful selection of UWV location and depth. To achieve carbon sequestration durability of 100 y, an initially low-moisture UWV should be built as follows: (a) low-permeability, high-plasticity clays with a hydraulic conductivity of ≤10−9 m/s, and with vertical/lateral separation distance

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ЯН, И., Ц. ФУ, Х. ЮАНЬ, М. П. ХАЙДИНА, and Ц. ВЭЙ. "INFLUENCE OF PROPPANT PARAMETERS ON HYDRAULIC FRACTURE CONDUCTIVITY." Физико-технические проблемы разработки полезных ископаемых, no. 5 (November 13, 2023): 85–98. http://dx.doi.org/10.15372/ftprpi20230510.

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Исследовано влияние параметров проппантов на долговременную проводимость трещин гидроразрыва пласта. Вдавливание проппантов в стенки трещины и их раздавливание изучены системой определения проводимости трещины FCMS-V с помощью автоэмиссионного сканирующего микроскопа, поляризационного микроскопа и методом ситового анализа. Выявлены зависимости проводимости от размера гранул, гранулометрического состава, концентрации и способа размещения проппантов, давления смыкания трещины и вдавливания проппантов в стенки трещины. Подробно рассмотрены вопросы вдавливания и раздавливания проппантов различного

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Pikuła, Maciej, Krzysztof Chudy, Magdalena Worsa-Kozak, and Mariusz Czop. "Scale Effect on Hydraulic Properties of Pore-Fissure Deep Rock Formations and Its Importance for the Mining Shaft-Sinking Process." Energies 16, no. 5 (2023): 2263. http://dx.doi.org/10.3390/en16052263.

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The problem of hydraulic parameters estimation lies in the depth: the deeper the rock formation, the more expensive and difficult the field tests and samples acquisition, and the more challenging the technical issues. The article assesses the Triassic sandstone’s drainage potential at the stage of shaft sinking. It focuses on parameter analysis in varied scales, from drill-core sample laboratory testing, through a single well drawing test, to long-term pumping and recovery tests in the well with observation piezometers. The obtained results are compared to the values estimated in the past usin

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Wang, Song Qing, and Shi Jing He. "Influence of Sand Concentration on Variation Characteristics of Aquifer Parameters under Groundwater Source Heat Pump Long-Term Operation." Advanced Materials Research 689 (May 2013): 551–55. http://dx.doi.org/10.4028/www.scientific.net/amr.689.551.

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The influence of sand concentration on variation characteristics of aquifer parameters, under groundwater source heat pump long-term operation, is theoretically analyzed through numerical simulation method. The present studies show that the sand concentration obviously affects the variations of the porosity and hydraulic conductivity, however, the variation of confined water head is affected inconspicuously. The variations of aquifer parameters are also related with the seepage velocity.

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Nieć, Jakub, and Marcin Spychała. "Hydraulic Conductivity Estimation Test Impact on Long-Term Acceptance Rate and Soil Absorption System Design." Water 6, no. 9 (2014): 2808–20. http://dx.doi.org/10.3390/w6092808.

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Awal, Ripendra, Mohammad Safeeq, Farhat Abbas, et al. "Soil Physical Properties Spatial Variability under Long-Term No-Tillage Corn." Agronomy 9, no. 11 (2019): 750. http://dx.doi.org/10.3390/agronomy9110750.

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Spatial variability of soil physical and hydrological properties within or among agricultural fields could be intrinsically induced due to geologic and pedologic soil forming factors, but some of the variability may be induced by anthropogenic activities such as tillage practices. No-tillage has been gaining ground as a successful conservation practice, and quantifying spatial variability of soil physical properties induced by no-tillage practices is a prerequisite for making appropriate site-specific agricultural management decisions and/or reformulating some management practices. In particul

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Cavusoglu, Ibrahim. "Superplasticizer Dosage Effect on Strength, Microstructure and Permeability Enhancement of Cementitious Paste Fills." Minerals 14, no. 12 (2024): 1242. https://doi.org/10.3390/min14121242.

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A cementitious paste fill (CPF) ensures the long-age stability of underground cavities. Recently, superplasticizers, specifically ones that are polycarboxylate ether-based, have been incorporated to enhance CPF performance, yet their long-term effects on permeability, mechanical properties, and microstructures remain unclear. This study investigates these effects with CPF samples containing varying superplasticizer dosages (0%, 1%, 3%, 5%) that have been cured for up to 150 days. Rheological assessments (slump cone, vane shear tests), unconfined compressive strength testing, microstructural ch

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Ma, Hongfei, Wenqi Zhao, Meng Sun, et al. "Productivity Analysis of Volume Fractured Wells under Different Working Systems." Geofluids 2021 (April 22, 2021): 1–21. http://dx.doi.org/10.1155/2021/5593663.

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The volume fracturing technique has been widely used to improve the productivity of ultralow-permeability reservoirs. This paper presents a new semianalytical model to simulate the pressure transient and production behaviour of finite conductivity vertical fractured wells with stimulated reservoir volume (SRV) in heterogeneous reservoirs. The model is based on the five-linear flow model, the Warren-Root model, and fracture conductivity influence function. The model is validated by comparing its results with a numerical model. One novelty of this model is its consideration of three different ki

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Duan, Chun-Yang, Ming-Yong Li, Li-Dong Fang, et al. "Greater hydraulic safety contributes to higher growth resilience to drought across seven pine species in a semi-arid environment." Tree Physiology 42, no. 4 (2021): 727–39. http://dx.doi.org/10.1093/treephys/tpab137.

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Abstract Quantifying inter-specific variations of tree resilience to drought and revealing the underlying mechanisms are of great importance to the understanding of forest functionality, particularly in water-limited regions. So far, comprehensive studies incorporating investigations in inter-specific variations of long-term growth patterns of trees and the underlying physiological mechanisms are very limited. Here, in a semi-arid site of northern China, tree radial growth rate, inter-annual tree-ring growth responses to climate variability, as well as physiological characteristics pertinent t

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Castellini, Mirko, Francesco Fornaro, Pasquale Garofalo, et al. "Effects of No-Tillage and Conventional Tillage on Physical and Hydraulic Properties of Fine Textured Soils under Winter Wheat." Water 11, no. 3 (2019): 484. http://dx.doi.org/10.3390/w11030484.

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The conversion from conventional tillage (CT) to no-tillage (NT) of the soil is often suggested for positive long-term effects on several physical and hydraulic soil properties. In fact, although shortly after the conversion a worsening of the soil may occur, this transition should evolve in a progressive improvement of soil properties. Therefore, investigations aiming at evaluating the effects of NT on porous media are advisable, since such information may be relevant to better address the farmers’ choices to this specific soil conservation management strategy. In this investigation, innovati

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Ziccarelli, Maurizio. "Mix Design of Pervious Concrete in Geotechnical Engineering Applications." Materials 18, no. 9 (2025): 1909. https://doi.org/10.3390/ma18091909.

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This paper presents a comprehensive experimental study on the mix design and performance of permeable concrete for geotechnical applications, focusing on its hydraulic conductivity, durability, and filter properties. Characterized by high porosity and minimal or no fine aggregates, classical pervious concretes are effectively utilized in various civil and environmental engineering applications, including drainage systems and erosion control. This research examines the influence of the particle size distribution of aggregates on the filter properties of permeable concrete for applications in ge

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Malhi, S. S., A. P. Moulin, A. M. Johnston, and H. R. Kutcher. "Short-term and long-term effects of tillage and crop rotation on soil physical properties, organic C and N in a Black Chernozem in northeastern Saskatchewan." Canadian Journal of Soil Science 88, no. 3 (2008): 273–82. http://dx.doi.org/10.4141/cjss07062.

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A field experiment was conducted for 8 yr (from 1994 to 2001) in a Black Chernozem (Udic Haploboroll) high in organic C (5.5%) at Melfort, Saskatchewan, Canada, to assess the environmental impact of tillage and crop rotation. Short-term effects on residue cover, soil temperature, moisture, aggregation, bulk density and hydraulic conductivity were measured, and long-term effects on total organic C (TOC) and N (TON), and light fraction organic C (LFOC) and N (LFON) were determined. There were two tillage systems [no tillage (NT) and conventional tillage (CT)] and three 4-yr annual crop rotations

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Phogat, V. K., and R. Horn. "Applicability of Darcy’s law for predicting irrigation head: what are the limits?" Soil Research 51, no. 1 (2013): 10. http://dx.doi.org/10.1071/sr12257.

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Modelling soil water movement has increased the demand for accurate measurements of soil physical and hydraulic properties. Data on saturated hydraulic conductivity (K), which was measured by using different hydraulic heads, are presented for artificially packed soil columns and for different soil layers of undisturbed soil cores taken from a long-term experiment on conservation tillage. In the majority of the samples in both artificially packed soil columns and undisturbed soil cores, increasing hydraulic head caused significant deviation (i.e. significant positive correlation coefficient bet

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Chen, Chenghao, Shengshui Chen, Shiang Mei, Shaoyang Han, Xian Zhang, and Yi Tang. "An Improved Large-Scale Stress-Controlled Apparatus for Long-Term Seepage Study of Coarse-Grained Cohesive Soils." Sensors 21, no. 18 (2021): 6280. http://dx.doi.org/10.3390/s21186280.

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Clay–gravel mixture has been widely used in high embankment dams and understanding its seepage characteristics is critical to dam safety. From the instrumental perspective, the realization of continuous pressurized water supply becomes a key technical challenge, significantly restricting the working conditions replicated in previous seepage apparatuses. To this end, a novel water provision system, relying on parallel-disposed sensor-based pressure devices, was introduced, so that the application of an existing large-scale stress-controlled apparatus can be expanded to long-term seepage tests r

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Popolizio, Stefano, Anna Maria Stellacci, Luisa Giglio, Emanuele Barca, Matteo Spagnuolo, and Mirko Castellini. "Seasonal and Soil Use Dependent Variability of Physical and Hydraulic Properties: An Assessment under Minimum Tillage and No-Tillage in a Long-Term Experiment in Southern Italy." Agronomy 12, no. 12 (2022): 3142. http://dx.doi.org/10.3390/agronomy12123142.

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Defining the optimal sampling time across the growing season is crucial to standardize sampling protocols for soil physical status monitoring and to achieve comparable results under different experimental conditions and on different sites. In this study, the seasonal variability of soil physical and hydraulic properties under two conservative soil management strategies, minimum tillage and no-tillage, was evaluated in a long-term field experiment. On two sampling dates, autumn 2021 and summer 2022, soil bulk density (BD) and volumetric soil water content at the time of the experiments (θi) wer

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Radcliffe, D. E., and L. T. West. "Spreadsheet for Converting Saturated Hydraulic Conductivity to Long-Term Acceptance Rate tor On-Site Wastewater Systems." Soil Horizons 50, no. 1 (2009): 20. http://dx.doi.org/10.2136/sh2009.1.0020.

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Joshi, Kaushal, Cedric Kechavarzi, Kenneth Sutherland, Man Yin Albert Ng, Kenichi Soga, and Paul Tedd. "Laboratory and In Situ Tests for Long-Term Hydraulic Conductivity of a Cement-Bentonite Cutoff Wall." Journal of Geotechnical and Geoenvironmental Engineering 136, no. 4 (2010): 562–72. http://dx.doi.org/10.1061/(asce)gt.1943-5606.0000248.

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