Correlations of Soil and Rock Properties in Geotechnical Engineering

Ameratunga, Jay; Sivakugan, Nagaratnam; Das, Braja M.

doi:10.1007/978-81-322-2629-1

Cited by 93 publications

(65 citation statements)

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“…The undrained strength ratios ( c u v 0 vl ) CIU of undrained shear strength (c u ) over effective overburden stress ( v0 vl ) are between 0.25 and 0.4 (Table 3) which agree well with the suggested values of NC Clay (Lambe and Whitman 1969;Ameratunga et al 2016). The deformed shapes of specimens show compressive failure modes and very clear shear surfaces are observed with the shearing plane angles (Ψ) between 56 -62° (Fig.…”

Section: Strength Parameterssupporting

confidence: 80%

“…k h = 0.08, we can obtain ( c u v 0 vl ) of 0.26. This ( c u v 0 vl ) value is between the suggested range of 0.2 and 0.4 for NC clay (Lambe and Whitman 1969;Ameratunga et al 2016), but is smaller than the average ( c u v 0 vl ) CIU of 0.31 obtained by CIU triaxial tests (Table 3). Assuming sliding surface is at depth of h avg (= 11 m), the initial effective overburden stress ( vi vl ) is 79 kPa in the sliding plane of infinite slope.…”

Section: Core No Uscs γ (Kn M -3 ) G S N (%) ω N (%) Pl (%) Ll (%) Pmentioning

confidence: 51%

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Back analysis of an earthquake-triggered submarine landslide near the SW of Xiaoliuqiu

Hsu

Dong

Hsu³

et al. 2018

Terr. Atmos. Ocean. Sci.

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Occurred in the offshore of SW Taiwan on 26 December 2006 with a magnitude of 7, the Pingtung earthquake had triggered numbers of submarine landslides. This event provides an excellent opportunity to incorporate the back analysis approach to evaluate the in situ shear strength parameters. According to the chirp sonar images of the seabed near the SW Xiaoliuqiu obtained before and after the earthquake were adopted to establish the slope profile and identified the location of a circular sliding surface. Consequently, the in situ, effective strength parameters under the critical condition can be calculated by back slope stability analysis. Submarine sediment sampler was obtained via gravity sampling method and the laboratory tests were performed to determine the index properties and strength parameters. Test results indicate the cored sediment has the characteristics of normally consolidated (NC) clay. The effective friction angle (φ') is 15.3° with cohesion (c') of 19.4 kPa. The effective and total stress methods were used to perform the back analysis. The strength parameters derived from back analysis of effective and total stress methods all indicate values approach the CIU triaxial tests results. Consequently, the representativeness of the marine sediment characteristics obtained from laboratory tests is identified. The total stress approach yields an undrained strength ratio c u /σ' v0 of 0.26 which well fit the ratio used in geotechnical practice for estimating NC clay. According to the analytical approach, the landslide was applied seismic forces (seismic coefficient k h = 0.14) and generated excess pore pressure of 31 kPa at the sliding surface.

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Section: Strength Parameterssupporting

confidence: 80%

Section: Core No Uscs γ (Kn M -3 ) G S N (%) ω N (%) Pl (%) Ll (%) Pmentioning

confidence: 51%

Back analysis of an earthquake-triggered submarine landslide near the SW of Xiaoliuqiu

Hsu

Dong

Hsu³

et al. 2018

Terr. Atmos. Ocean. Sci.

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“…The actual porosity (n i ) is calculated as the ratio of this released void volume to the total volume (V T ). The actual porosity n i was compared to the porosity (n ki ) deduced from the measured hydraulic conductivity through the Kozeny-Carman formula [25,26]. Because the decrease of the hydraulic conductivity is due to the deposited particles within the constrictions, this parameter can be linked to the CSD evolution.…”

Section: Effective Filtration Volume: Iteration Modelmentioning

confidence: 99%

“…The average diameter of the constrictions change can be estimated using Eq.4, moving from the initial constriction size D c0 to the final constriction size D cf , using the values of the initial porosity n 0 of the clear filter and the final porosity n k (deduced from the Kozeny-Carman relation [25,26], Eq. 2).…”

Section: Evaluation Of the Constrictions Size Reductionmentioning

confidence: 99%

Evaluation of the constriction size reduction of granular filters due to upstream cohesive base-soil erosion

Azirou¹,

Benamar²,

Tahakourt³

2018

ActaGeotechSlov

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This study is devoted to filter-constrictions analysis and its application with respect to void and constrictions reduction during soil filtration. The experimental investigation involves combined Hole Erosion-Filtration tests using several soils and filters. The base soils are lean clays and the granular filters are selected according to the usual filtration criteria. The combination of the experimental data for porosity variation and the analytical results from the Constriction Size Distribution (CSD) analysis was used to evaluate the constrictions size reduction subsequent to the filtration process. The filtration depth was also estimated according to the retained soil mass and the porosity reduction deduced from the measured hydraulic conductivity. An analytical model of the CSD was applied to the experimental results in order to assess the constrictions reduction. As regards the obtained results, a nonuniform constriction reduction was suggested according to the effective filtration depth, advocating a dynamic filter action.

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“…Estimation of internal friction angle and the cohesion of limestone of the Chouf-Amar quarry. The estimation of cohesion and internal friction angle of our limestone rock massif in the Chouf Amar quarry is determined by two criteria which are Structural coefficient of weakening (Ameratunga et al, 2016), and Mohr Coulomb using Hoek-Brown classification of the rock massif (table 2). According to the obtained results, there's a discrepancy related to the estimation method, but, on the whole, they gave close values.…”

mentioning

confidence: 99%

Slope Stability Assessment in the Opencast Quarry in Hammam Dalaa (M'sila, Algeria)

Aiss¹,

Cheikhaoui²,

Kanlı

et al. 2019

VKNUGEOL

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The aim of this study is to identify the main factors that affect the site's stability by using the adequate solutions, which help to solve the problems of slope stability at the quarry of Chouf Amar, Hammam Dalaa, Algeria. A large amount of geological, hydrogeological and mechanical data has been collected from the site. We realized the study of the influence of different factors on the safety coefficient. Limit equilibrium techniques have been adapted, taking into account the variability of the site data, to analyze the performance of the existing area of production site. Results solution under different configurations has shown that stability index is highly affected by hydraulic and seismic factors.

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Correlations of Soil and Rock Properties in Geotechnical Engineering

Abstract: The use of general descriptive names, registered names, trademarks, service marks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.

Cited by 93 publications

References 0 publications

Back analysis of an earthquake-triggered submarine landslide near the SW of Xiaoliuqiu

Back analysis of an earthquake-triggered submarine landslide near the SW of Xiaoliuqiu

Evaluation of the constriction size reduction of granular filters due to upstream cohesive base-soil erosion

Slope Stability Assessment in the Opencast Quarry in Hammam Dalaa (M'sila, Algeria)

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