Loess flow

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August undefined, 2024

Witryna22 gru 2024 · Loess flow slide are usually 1.5–3 m thick, while clayey flow slides can be 8–10 m thick. Study of the eroded landslide dams produced by the flow slides show that their volume can comprise up to 30% of the entire flow slide volume if it crosses the dammed valley, and up to 80% if the flow slide moves along the valley. ... Witryna1 kwi 2024 · Abstract. Loess flow slides can have catastrophic consequences and have, therefore, become a critical research topic in engineering geology. Recent …

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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 … 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]. la mejor playa de samana

Characteristics and numerical modeling of a catastrophic …

Witryna8 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 ... 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 … Witryna13 kwi 2024 · This phenomenon decreases the water flow capacity while ensuring the water evaporation capacity inside the loess. The findings demonstrate the potential of … la mejor runa para yasuo

Flows through intensively row-cropped land U.S. Geological Survey

Loess flow

Determining the unsaturated hydraulic conductivity of remoulded loess ...

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. 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 …

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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 … 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 …

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 … Witryna20 lis 2009 · The Yasman valley loess flow has some similarity with the 1994 Paez River flow, Colombia, formed by the coalescence of multiple earthquake-triggered debris flows (Calderon et al., 1997, Scott et al., 2001). In comparison, the volume of the Paez River flow has been estimated as 318 ...

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 … WitrynaErratum for ‘Rapid loess flow slides in Heifangtai terrace, Gansu, China’ Quarterly Journal of Engineering Geology and Hydrogeology , 50, 106–110. Article. Nov 2024; Jianbing Peng;

Witryna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

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 … la mejor playlist para jugarWitrynaLoess is very loose fine soil, and after long-term erosion by runoff and river water, sediment is carried into the Yellow River, turning its water yellow. It can be said that … jersey mike\u0027s menu bread choicesWitryna21 kwi 2024 · The geologic environment, causes, movement process, movement mechanism, and disasters-causing characteristics of loess flow slides can contribute … la mejor tarifa bateria virtualWitryna14 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 … la mejor salsa barbacoaWitryna14 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. jersey mike\u0027s menu bg kyWitryna18 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 … la mejor playa de panamaWitrynaThe Yellow River’s basin area is 752,443 km 2 (290,520 mi 2 ), containing about 200,000 km 2 (77,000 mi 2) of arable land and over 100 million people. The average flow rate of the Yellow River is 1,800 cubic meters per second. Its biggest tributary is the Wei River, which flows past Xi'an. The Upper Reaches of the Yellow River jersey mike\u0027s menu apple valley ca