This study explores the potential of integrating stateoftheart physically based hydrogeological modeling into slope stability simulations to identify the hydrogeological triggers of landslides. Here we apply the model to investigate the effect of neglecting the unsaturated storage on the assessment of slope stability in the steadystate hydrology. Download and murmur books online, epub pdf online audible kindle is an easy way to report, books for discordant. Advances in hillslope hydrology have been numerous in the past four decades. Based on the principles of hillslope hydrology, hydrologic information can be generated at suf.
Hydrogeological models considering detailed morphological, lithological, and climatic factors were elaborated. Effect of root strength soil saturation on hillslope. Kolka the hydrology, soils, and watershed processes of a. Hillslope hydrology and stability landslides occur when hillslopes become mechanically unstable, because of meteorological and geologic processes, and pose a serious threat to human environments in their proximity. Hillslope hydrology and stability article in environmental and engineering geoscience 204. Implications of the extreme spatial variability in porewater pressure are evaluated for conceptual models of hillslope hydrology.
In previous studies of shallow landslide models, the effect of overland water flow on slope stability was ignored. Pdf hillslope and watershed hydrology download ebook for. Geomorphological control on variably saturated hillslope. Mar 19, 2020 hillslope hydrology and stability landslides occur when hillslopes become mechanically unstable, because of meteorological and geologic processes, and pose a serious threat to human environments in their proximity. This hierarchy can be envisaged as a cascade in which the. Pdf stability and damping in a dynamical model of hillslope. Soil indicators of hillslope hydrology, principles, application and assessment in soil science, e. Chuan yan, tianchyi j yeh, yuan yuan zha hydrology and water resources. Triggering mechanisms and rainfall thresholds of shallow. Solar radiation, wind speed, cloud cover and dew point were downloaded from. Please click button to get hillslope hydrology and stability book now. Mar 14, 2015 it is well know that many shallow landslides are triggered by rainfalls. In this paper, a physical model considered the effect of overland water flow on rainfallinduced shallow landslides is derived and applied to predict the landslides. Flow duration curve analysis, hydrologic alteration, ranges of variability.
Hillslope hydrology and stability oregon state university. Download pdf hillslope hydrology and stability free. Stability analysis of a layered hillslope subjected to a constant infiltration rate of 0. British columbia is a diverse province with mountain ranges and incised plateaus. Preevent water is water that was present in the hillslope before the storm as identified by a distinct isotopic or.
Hillslope hydrology and stability ning lu colorado school of mines jonathan godt united states geological survey, colorado about the book landslides are caused by a failure of the mechanical balance within hillslopes. Jul 16, 2018 this study explores the potential of integrating stateoftheart physically based hydrogeological modeling into slope stability simulations to identify the hydrogeological triggers of landslides. The hydrologic response of a hillslope to rainfall involves a complex, transient saturatedunsaturated interaction that usually leads to a water table rise. D, physically based, distributed model coupled with a module for computation of the probability of. Describing the fates of precipitation, the mechanics of runoff, and the calculations involved in assessment, this book clarifies the complex interplay of soils, sediment, subsurface flow, overland flow, saturation, erosion, and more. Johan van tol, pieter le roux and malcolm hensley december 22nd 2011. Topography mainly affects slope stability through two main processes. A linear reservoir model for simulation of ground water levels was coupled to a viscoplastic stability model. Our results show that slope stability increases when profile curvature changes from concave to convex. Groundwater modeling reveals locations with elevated pore water pressures in the. Process studies in hillslope hydrology pdf despite rapid hillslope transport processes during events, soil. The motivation for the research is to develop a physically.
Preface hillslope hydrological modelling for landslides prediction. A physical model considered the effect of overland water flow. May 19, 2016 we aim to assess and quantify the impact of topography on both saturated and unsaturated hillslope hydrology and its effects on shallow slope stability. All books are in clear copy here, and all files are secure so dont worry about it. Hillslope stability an infinite slope model was used to evaluate the relative influence of the estimated changes in soil saturation and root strength on slope stabil ity. Download hillslope hydrology and stability pdf book author, online pdf book editor hillslope hydrology and stability. Despite a largely soilcentric view of hillslope hydrology, early workby wilson and dietrich1987 ina zeroorder basin incalifornia showed the potentially signi. This study assessed the effects of forest harvest on hillslope hydrology and linked hydrologic change before and after harvest with a simple model of hillslope stability. Jeff mcdonnell richardson chair in watershed science 015 peavy hall 7378720. The mountainous topography is responsible for creating a variety of climates. Mar 11, 2014 the ecological mitigation of hillslope instability combines science and practice at the intersection of civilgeotechnical engineering, geomorphology, soil science, hydrology, silviculture if trees are used for timber, plant science, landscape design and ecological restoration.
Regolith stripping and the control of shallow translational hillslope failure. The hillslope hydrology and stability analysis carried out in this paper are based on the geotopfs 2. Recent research in hillslope hydrology involving tracers, especially in humid catchments has found that the dominant contributor to stormflow in the stream is preevent water averaging 75% world wide, buttle, 1994. Measurements from an instrumented network in a small area have been used to establish index. Because the latter model is discussed in detail by angeli et al. Observations of peak water table heights in 56 groundwater monitoring wells showed that soil saturation levels on hillslopes differed significantly with harvest intensity at. Download book hillslope hydrology and stability in pdf format. The department of forest engineering fe 537 hillslope hydrology. This balance is governed by two coupled physical processes. Stability calculations were made for each of the 34 piezometer sites in cedardecline areas using observed values of soil depth, saturated. This book is, essentially, a textbook for a graduatelevel course in slope stability analysis. The assumption of parallel seepage flow is widely adopted in translational slope stability analyses, imposing a linear distribution of porewater pressure with depth. Summary of hillslope flow process wetland water budgets hydropatterns wetland hydraulics and residence time geomorphic controls on wetland hydrology effects of land use on wetland hydrology two wetland soils, hydrology, and geomorphology c.
Physically based hydrogeological and slope stability modeling. This is incorporated into a combined numerical hillslope hydrology stability model. The relation between geometry, hydrology and stability of complex. Three real hillslope morphologies concave, convex, and planar are analyzed using a 3. Hillslope hydrology and stability by lu, ning and a great selection of related books, art and collectibles available now at. Slope stability analysis, landslide, hillslope hydrology and stability, pdf ebook, pdf, geoscience, remote sensing and gis open pdf and software resources of earthsciences, remote sensing and geographic information system. It is well know that many shallow landslides are triggered by rainfalls. Hillslope hydrology and stability request pdf researchgate. Lecture overview background on hillslope hydrology boussinesq equation for unconfined flow over a sloping bed water balance method for hillslope segments the importance of divergence and convergence of hillslopes. The relation between geometry, hydrology and stability of. Bank stability summary seepage erosion is an important factor in hillslope instability and failure.
The hydrologic response of a hillslope to rainfall involves a complex, transient. The hydrologic response of a hillslope to rainfall involves a complex, transient saturatedunsaturated interaction that. Hillslope hydrology provides a comprehensive introduction to the behavior of water on a slope. A stability analysis is performed on the twostate variable, integralbalance model of hillslope hydrology developed by duffy 1996. We aim to assess and quantify the impact of topography on both saturated and unsaturated hillslope hydrology and its effects on shallow slope stability. Read hillslope and watershed hydrology online, read in mobile or kindle.
The relation between geometry, hydrology and stability of complex hillslopes examined using lowdimensional hydrological models, doctoral thesis, wageningen university, wageningen, the netherlands. Download hillslope and watershed hydrology ebook free in pdf and epub format. You can read online hillslope hydrology and stability here in pdf, epub, mobi or docx formats. Swgw interaction needs to be understood from the watershed perspective. This implies the lower potential for landsliding in the sandstone hillslopes, corresponding to the lower landslide activity. Advances in understanding of hydrological processes have been abundant in the last. Quantifying the threedimensional effects of anisotropic soil. Recent studies have shown that the hillslope connection depends on. A complete guide to the behavior of water on graded land hillslope hydrology provides a comprehensive introduction to the behavior of water on a slope. Hillslope hydrology streams are the conduits of the surface and subsurface runoff generated in watersheds. Hillslope hydrology and stability ning lu, jonathan w. Exercises and homework problems are provided for students to engage with the theory in practice. Request pdf hillslope hydrology and stability landslides are caused by a failure of the mechanical balance within hillslopes. The ecological mitigation of hillslope instability combines science and practice at the intersection of civilgeotechnical engineering, geomorphology, soil science, hydrology, silviculture if trees are used for timber, plant science, landscape design and ecological restoration.
For long term analysis, the linearized steadystate solution of the hsb equation berne. Hydrological response of hillslope soils above a debrisslide. Transient hydrology, described by the richards 1931 equation, determines soil moisture changes and related variations in pore water. Hillslope hydrology and stability assets cambridge university. Hillslope geometry, hillslope hydrology, hillslope stability, complex hillslopes, modeling shallow landslides, hsb model, hsbsm model. Limitations exist with all existing seepage erosion sediment transport functions, including neglecting the. A combined hillslope hydrologystability model for low. In addition to testing our method for nine characteristic hillslope types, a general relationship between plan shape and profile curvature of landform elements and the factor of safety is derived for a pre. Hillslope hydrology and stability download ebook pdfepub. Transient hydrology, described by the richards 1931 equation, determines soil moisture changes and related variations in pore water pressure.
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