نتایج جستجو برای: rock slopes

تعداد نتایج: 52630  

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2015
Clifford S Riebe Leonard S Sklar Claire E Lukens David L Shuster

Weathering on mountain slopes converts rock to sediment that erodes into channels and thus provides streams with tools for incision into bedrock. Both the size and flux of sediment from slopes can influence channel incision, making sediment production and erosion central to the interplay of climate and tectonics in landscape evolution. Although erosion rates are commonly measured using cosmogen...

In order to analyze the slope stability in open-pit mines, the structural parameters of rock mass such as persistence and spatial orientation of discontinuities are characterized through field surveys, which involve spending high costs and times as well as posing high risks of rock toppling and rock fall. In the present work, a new application of terrestrial digital photogrammetry is introduced...

Numerical modelling techniques are not new for mining industry and civil engineering projects anymore. These techniques have been widely used for rock engineering problems such as stability analysis and support design of roadways and tunnels, caving and subsidence prediction, and stability analysis of rock slopes. Despite the significant advancement in the computational mechanics and availabili...

Journal: :Sustainability 2023

The phenomenon of toppling deformation and failure is common in slopes with anti-dip structures, especially soft metamorphic rock slopes. This paper aims to explore the instability mechanism layered landslides. Taking slope a mining area southern Qinling Mountains China as geological prototype, large-scale centrifuge model test numerical simulation based on combined finite discrete element meth...

Journal: :Applied sciences 2023

Seasonal freeze–thaw environments are one of the key factors that aggravate mechanical strength decay excavated and unloaded rock masses on reservoir banks in cold areas. To study time-dependent properties an mass a bank slope under action, triaxial unloading tests were carried out sandstone, simulating freezing conducted, creep implemented with graded incremental loading specimens subjected to...

The Arghavan Valley of Binalood county located at Khorasan Razavi province, is a habitat for valuable and almost rare plant community in eastern Iran which dominated by Cercis griffithii Boiss. shrubs. This habitat is very important for environmental aspects and combat desertification. It’s documented where arid and semi-arid shrublands destroyed, it is very difficult to restore. The Arghavan v...

This paper is based on the open pit to underground mining practice of Daye Iron Mine. The influence mechanism between high-steep slope and non-pillar sublevel caving method is studied by using physical model test. Firstly, engineering geological properties of the choosing typical research section is analysed and generalized. Secondly, the system of open pit to underground mining is developing a...

2007
Simon H. Brocklehurst Kelin X. Whipple

[1] The response of glaciated landscapes to rapid rock uplift, driven by tectonic convergence, is an important, often neglected, aspect of proposed interactions between plate tectonic processes and climate change. Rivers typically respond to more rapid rock uplift in part through increasing channel gradients. In contrast, the ‘‘glacial buzzsaw’’ hypothesis suggests that glaciers can erode as qu...

2009
M. Sturzenegger

This paper describes experience gained in the application of terrestrial digital photogrammetry and terrestrial laser scanning for the characterization of the structure of high mountain rock slopes and large landslides. A methodology allowing the creation and registration of 3-D models with limited access to high mountain rock slopes is developed and its accuracy verified. The importance of occ...

2009
S. Binet L. Spadini

Water chemical analysis of 100 springs from the Orco and the Tinée valleys (Western Italy and Southern France) and a 7 year groundwater chemistry monitoring of the 5 main springs were performed. All these springs drain from crystalline rock slopes. Some of these drain from currently active gravitational slope deformations. All groundwaters flowing through presently unstable slopes show anomalie...

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