Loess flow

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August undefined, 2024

WitrynaSoil erosion in sloping cropland is a major water and soil conservation issue in the Loess Plateau region, one of the main areas with sloping cropland in China. However, the effect of crop root systems, a major factor potentially influencing soil and water conservation in cropland, on farmland erosion, remains unclear. In the present study, soil erosion was … WitrynaIn the Loess Plateau, the effects of run-on may be significant, because of the deep and loose surface soil layer. In this study, the role of run-on for overland flow in the Upper Wei River basin, located in the Loess Plateau, is evaluated by means of a simple numerical model at the hillslope scale.

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Witryna1 lis 2013 · The loess flows initiated at the contact between loess and underlying clay and can travel a distance of more than 300 m at a speed of up to 5 m/s. Controlled by … Witryna19 paź 2024 · Although pore water velocity was small in the deep loess, preferential water flow still accounted for 34–65% of total infiltrated water. This study presented … club bayer pl

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Witryna28 mar 2024 · Landslides occur mainly along the West Qinling faults on slopes with gradients of 10° to 25° and on southeast- and southwest-facing slopes. These … WitrynaSoil erosion in sloping cropland is a major water and soil conservation issue in the Loess Plateau region, one of the main areas with sloping cropland in China. However, the … Witryna1 lut 2024 · The experiments focused on the process and mechanism of loess erosion and the downstream movement of channel mudflow, so the flow rate, water level, and … clubb construction

Small-scale catastrophic landslides in loess areas of China: an …

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Witryna31 maj 1999 · Hyperconcentrated flows are an important factor responsible for the high-intensity erosion and sediment yield in the middle Yellow River basin. Many previous studies have indicated that the sediment delivery ratio on the Loess Plateau approaches 1. This can be explained by the action of hyperconcentrated flows. Witryna16 paź 2024 · The types of landslides include loess-bedrock planar slide, loess flow, loess flowslide, and loess slide . Several scholars have reported that rising groundwater levels aggravate the saturated area of loess and that the matrix suction inside a slope decreases under saturated water conditions [3,4]. club bayar beach hotel 4*WitrynaLoess flow Rock dall Subsidence Debris flow/debris avalanche Mudflow Gambar 2. Pergerakan tanah sebagai fungsi dari kadar air dan kecepatan pergerakan (Abbot, 2004) cabinet with clothes rack

"Witryna14 kwi 2024 · The high sensitivity of loess slopes to water has been emphasized in many studies. However, it is still limited in terms of the understanding of slope morphological differentiation on the overall and local failure patterns in slopes, as well as on the acquisition method of hydrological dynamics. In this study, rainfall characteristics and … " - Loess flow

Loess flow

Effects of Different Crop Root Systems on Soil Detachment by ...

Witryna14 gru 2024 · The formation mechanism of different failures in the course of loess tunnel construction is revealed by numerical analysis, in which the structural property of … Witryna13 kwi 2024 · Specifically, the permeability coefficient of the loess with low compaction degree (1.35 g/cm 3) decreases by 87% after the addition of 3% SHP. Moreover, the permeability coefficient of the loess with a compaction degree of 1.50 g/cm 3 decreases from 1.58 × 10 −6 to 7.9 × 10 −8 cm/s.

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Witryna18 lip 2024 · This paper studied the anti-seepage ability of the modified loess by using attapulgite, which is abundant in local areas. The possibility of using the modified loess as the sustainable compacted soil liner material in a solid waste landfill was also considered in this research. The materials were then evaluated using Nuclear … WitrynaPerched water table was significantly raised and resulted in many loess flow failures in the past 30 years. This type of landslide was often featured by long runout distance, high speed and recurrence. Laboratory tests along ICU and CSD stress paths were performed. It is shown that the loess has a strong strain-softening behavior and ...

WitrynaLi Luo's 3 research works with 18 citations and 62 reads, including: Unique landslides (loess slide-flows) induced by an extreme rainstorm in 2024 on the Loess Plateau: A … Witryna10 lut 2024 · A comprehensive understanding of the spatial distribution and dynamic changes of soil properties are the basis for sustainable land management. Topography and land use types are key factors affecting soil property variability. This study analyzed the effects of land use types and landscape locations on soil properties, based on …

Witryna19 paź 2024 · Although pore water velocity was small in the deep loess, preferential water flow still accounted for 34–65% of total infiltrated water. This study presented the mechanisms that regulate movement of soil water following deforestation through field observations and advanced our understanding of the soil hydrologic process in deep … Witryna18 paź 2024 · Therefore, loess mudflows have become a common geological disaster on the Chinese Loess Plateau. In order to study the initiation mode and mechanism of …

Witryna22 lut 2011 · Loess flow failure. The clay underlying the loess acts as an impermeable layer at Heifangtai. Long-term irrigation has raised the perched water table …

Witryna8 mar 2024 · 1 answer. Feb 21, 2024. preferential flow may be ubiquitous, it is difficult to measure and quantify,since the Loess has deep soil layer. Tracers is sultable but … cabinet with coffee barWitryna23 gru 2014 · Field investigations indicated that the loess flow-slides only occurred at a depth of <2 m, which corresponded to a surface layer of completely saturated loess … club beachbody on demand loginWitryna合作机构. 长安大学地质工程与测绘学院 269; 长安大学地质工程与测绘工程学院 161; 长安大学 149; 长安大学地质工程系 38; 长安大学建筑工程学院 32; 中国地质科学院地质力学研究所 31; 浙江大学 15; 长安大学西部矿产资源与地质工程教育部重点实验室 15; 西部矿产资源与地质环境教育部重点实验室 14 cabinet with coat hooksWitryna8 kwi 2024 · High-intensity rainfall, over-irrigation of agricultural fields, and freeze–thaw cycles induce gradual groundwater infiltration within the upper loess layer, and this water flow generally overflows from slopes (Zhou et al. 2014). The same mechanism leads to pothole erosion and increases the chances of hillslope failure of the walls of gullies ... cabinet with coat hangers n storage areaWitryna14 gru 2024 · The dry loess flowing on excavation face. After the loess with a large porosity ratio is immersed and saturated, the original structure of the loess Q3 and upper Q2 is destroyed largely by subjecting to collapsing deformation disturbance. When the deformation is caused by excavating, the loess structure will change further. cabinet with coat hangers and storage areaWitrynaloess, an unstratified, geologically recent deposit of silty or loamy material that is usually buff or yellowish brown in colour and is chiefly deposited by the wind. Loess is a … club bay viewWitrynaThe semi-arid region of China’s Loess Plateau is characterized by fragile ecosystems and a shortage of water resources. The major natural forest type in this region is the secondary forest with the flora dominated by the Liaodong oak (Quercus liaotungensis Koidz.). To understand its transpiration water use in relation to environmental factors, … cabinet with chicken wire doors