Author: V. SilvestriPublisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
The Long-term Stability of a Cutting Slope in an Overconsolidated Sensitive Clay
Author: V. SilvestriLong-term Stability of Slopes in Over-consolidated Clays
Author: F. A. De LorySlope Stability in an Overconsolidated Clay
Author: F. EsuCanadian Geotechnical Journal
Author: Long term stability of slopes in over-consolidated clays
Author: Frederick Anthony De LoryPublisher:
ISBN:
Category : Clay
Languages : en
Pages : 584
Book Description
Fundamentals of Engineering Geology
Author: F. G. BellPublisher: Elsevier
ISBN: 1483102300
Category : Science
Languages : en
Pages : 657
Book Description
Fundamentals of Engineering Geology discusses geomorphological processes, particularly the linkages between geology, geo-technics, rock mechanics, soil mechanics, and foundation design. The book reviews igneous rocks, metamorphic rocks, sedimentary rocks, and stratigraphy. Stratigraphy is based on three fundamental principles, namely, the "Law of Superposition, the ""Law of Faunal Succession
Slope Stability and Stabilization Methods
Author: Lee W. AbramsonPublisher: Wiley-Interscience
ISBN:
Category : Science
Languages : en
Pages : 664
Book Description
This text includes an introduction to the concepts used in slope stability studies, a discussion of the geologic features that usually give slopes their personality, groundwater and seepage issues that frequently cause slope stability problems, and slope s
On the delayed failure of geotechnical structures in low permeability ground
Author: Roberto SchuerchPublisher: vdf Hochschulverlag AG
ISBN: 3728138568
Category : Science
Languages : en
Pages : 217
Book Description
Tunnelling, Tunnel Jacking, Ground Stability, MC Model, MCC Model This thesis investigates the problem of time-dependent stability of geotechnical structures (such as trenches or tunnels) in medium- to low-permeability water-bearing grounds, typically clayey or silty soils. The peculiarity of these soils is that they respond to excavation with a delay. The time-dependency can be traced back to the swelling process triggered by the dissipation of the excavation-induced negative excess pore pressures. Unstable conditions may necessitate improvement or reinforcement of the ground or the application of a support (e.g. by compressed air or pressurized bentonite slurry in the case of tunnel face). As such measures may present economical and operational disadvantages, the question of whether and for how long the excavation can remain stable without support is of great practical relevance. The stand-up time (time lapsing between end of the excavation and the occurrence of failure), and thus the feasibility of refraining from ground reinforcement, improvement or support, depends essentially on soil strength and permeability. The goal of the thesis is to develop a computational method that allows the estimation of the stand-up time, and thus improve construction safety and economy. The main objectives towards this goal are: analysis of the mechanism of delayed failure by means of fully coupled hydraulic-mechanical continuum-mechanical simulations, investigation into the role of the constitutive behaviour of the ground (particularly that of plastic dilation), anddevelopment of a practical method of dealing with the numerical problem of mesh-sensitivity which occurs due to the localization of deformations when assuming non-associated plasticflow in any geotechnical structure at failure;planning and performing experiments and validation of the computational method and assumptions; systematic investigation of the stand-up time of the tunnel face and working-out of design charts.
Geotechnical abstracts
Author: Techniques to Evaluate and Remediate the Slope Stability in Overconsolidated Clay
Author: Herman PeifferPublisher:
ISBN:
Category : Electronic books
Languages : en
Pages : 0
Book Description
In this chapter, the origin and remediation of an important sliding in the overconsolidated Boom Clay in Kruibeke (Belgium) is discussed. Local and environmental factors caused an unstable slope about 30 m deep, A larger sensitivity to erosion resulted finally in the instability of the slope. Because of the formation of fine cracks in the soil there was a possibility for the water to penetrate in the clay close to the surface, resulting in the presence of higher water pressures. Also, the presence of the excavator on top of the slope during exploitation had an important impact on the stress state of the soil. Both an analytical and numerical approach were used to estimate the factor of safety. Because of the change of the soil characteristics, the factor of safety decreases, which can be estimated through a numerical analysis (using the Strength Reduction Method). This chapter also discussed the applied techniques for the remediation using numerical analysis. Also, the importance of the field test is discussed. An integrated approach, using numerical analysis and field tests in combination, is capable of predicting the instability. This approach can also be used to evaluate the stability of the slope after remediation.