2024 Loess flow

Loess flow

Author: lasd

August undefined, 2024

WitrynaThe word stems from the German word loss or “loose,” and loess is generally easily eroded by water or blown by wind. Major loess deposits are found in Shaanxi, CHINA, in some of the U.S. plains states, … 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. ...

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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 … 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 ... milton roth obituary

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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 ... Witryna1 kwi 2024 · Abstract. Loess flow slides can have catastrophic consequences and have, therefore, become a critical research topic in engineering geology. Recent … Witrynaloess, 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 … milton rothschild

Loess flow

27 questions with answers in LOESS Science topic - ResearchGate

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 … 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 …

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WitrynaLoess slide-flows have become a new geological hazard and erosion process on the Loess Plateau. Loess slide-flows are a prominent ecological and environmental … 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 …

WitrynaThe 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 … 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

WitrynaHeadcut erosion is associated with major hydraulic changes induced by the gully head of concentrated flow. However, the variation in the hydraulic characteristics of the headcut erosion process is still not clear in the gully region of the Loess Plateau. A series of rainfall combined scouring experiments (flow discharges ranging from 3.6 to 7.2 ... 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 …

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 …

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 … milton roundtreeWitryna27 lis 2024 · Loess is very widely distributed, and the unsaturated hydraulic conductivity of loess is related to many engineering issues. To determine the unsaturated hydraulic conductivity of remoulded loess more conveniently and at a lower cost, filter paper test and soil column seepage test were carried out. milton roxberry find a graveWitryna20 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 ... milton r ousleyWitryna13 kwi 2024 · This phenomenon decreases the water flow capacity while ensuring the water evaporation capacity inside the loess. The findings demonstrate the potential of … milton row dunipaceWitryna8 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 … milton roy acc-10t manualWitryna3 cze 2024 · The Yongguang loess flow slide is a rapid and long-runout catastrophic landslide triggered by the Minxian–Zhangxian earthquake. The landslide traveled … milton roundaboutWitrynaThe 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 milton round coffee table