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Physical Characterization of a Deep Weathering Profile Over Rhyolite in Humid Tropical Peninsular Malaysia
Springer Science and Business Media LLC - Tập 36 - Trang 3793-3809 - 2018
The weathering profile, exposed at 38.2 km of the Kuala Lumpur—Karak Highway,
can be differentiated into three broad zones; the topmost Zone I (pedological
soil) comprising A, B and C soil horizons and made up of clayey silty sand with
indistinct relict bedrock textures. The intermediate Zone II (saprock) consists
of gravelly silty sand with distinct relict bedrock texture and structures, and
can ...
Stability of an Embankment on Soft Consolidating Soil with Vertical Drains
Springer Science and Business Media LLC - - 2016
Recommendations for a Quantitative Description of Joint Orientation Data
Springer Science and Business Media LLC - Tập 37 - Trang 1503-1514 - 2018
A comprehensive joint orientation data collection program is necessary to ensure
a sufficient degree of confidence in constructing a structural model. This paper
investigates the influence of the number of joints sampled on the
characterisation of the joint dip and dip direction. In a series of numerical
experiments, Discrete Fracture Networks (DFNs) were used to model joint set
populations. The a...
Influence of Petrogenesis on Suitability of Some Pelitic Rocks as Construction Aggregates in South-Eastern Nigeria
Springer Science and Business Media LLC - Tập 33 - Trang 1395-1407 - 2015
Ten rock samples, collected from five studied Albian rock quarry units, were
subjected to hand specimen and X-ray diffraction studies to determine their
petrography and also to two degradability test versions of soaking and drying to
simulate their resistance to intra-seasonal and inter-seasonal weathering that
occurs in south-eastern Nigeria. Nine of the samples, which are pelitic in
composition,...
Cracking Problems in the Segments of Tabriz Metro Tunnel: A 3D Computational Study
Springer Science and Business Media LLC - Tập 36 - Trang 1959-1974 - 2018
This paper presents numerical models of tunnel segments with respect to the
steel rebars using a finite element method under TBM thrust jack referring to
the Tabriz metro line 2. The analyses have been carried out in five different
steps. Numerical modellings have been done from the lowest ratio of
reinforcement (the weakest case) to the highest ratio of it (the strongest
case), which means that t...
The characteristics of glacial tills from Northern England derived from a relational database
Springer Science and Business Media LLC - Tập 24 - Trang 973-984 - 2006
Geotechnical investigations have been carried out for many years in order to
identify the depth, extent and the properties of the glacial deposits of
Northern England. This valuable source of data exists in various forms because
of the differences in the design of the investigations, the codes of practice
relevant at the time of investigations, and contractors practice. An electronic
store of thes...
A Parametric Analysis on the Influence of the Binder Characteristics on the Behaviour of Passive Rock Bolts with the Block Reinforcement Procedure
Springer Science and Business Media LLC - - 2020
Effect of Inclined Clay Core on Embankment Dam Seepage and Stability Through LEM and FEM
Springer Science and Business Media LLC - Tập 38 - Trang 6571-6586 - 2020
Water seepage affects dam stability and loss of water from reservoirs.
Consequently, seepage is an important problem in the design, implementation, and
operation of embankment dams. One type of embankment dam is a non-homogeneous
(zoned) dam with a clay core. Water passes through the core of the dam and loses
much of its energy due to friction. Zoned embankment dams can be designed and
implemented...
Influencing Factors of the Rebreak of the Key Rock Block of the Main Roof in the Gob
Springer Science and Business Media LLC - Tập 40 - Trang 4345-4356 - 2022
In view of the phenomenon that upright triangular zone and inverted triangular
zone of the collapsed roof appeared alternately in the gob, a mechanical model
of the rebreak of the key rock block (KRB) of the main roof in the gob was
established by using theoretical analysis. The main reason for the rebreak of
KRB was revealed and the bending moment expression at any point of KRB was
obtained. So, ...
Mechanism of the Mudstone Tunnel Failures Induced by Expansive Clay Minerals
Springer Science and Business Media LLC - Tập 35 - Trang 263-275 - 2016
Expansive clay minerals can be a serious threat to underground rock structure
because of their swelling behavior when absorbing water. Roof and wall collapse
as well as large deformation were observed in Xiaotun Coal Mine, Guizhou
Province, China. This paper studies the characteristics of expansive clays in
order to understand the mechanism of the mudstone tunnel failures in the mine.
The physical...
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