Use of Instrumentation to Safeguard Stability of a Tailings Dam

Scott, M. D.; Lo, Robert C.; Thavaraj, Thuraisamy

doi:10.1061/40940(307)56

Cited by 7 publications

(5 citation statements)

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“…In addition to the Chilean dams shown in Table 1, Cerro Verde centerline sand dam in Peru will reach a maximum height of 260 m (Obermeyer and Alexieva, 2011). In Canada, the Thompson Creek dam, also centerline, will have a maximum height of 220 m and in the USA the Highland Copper Valley centerline dam will be 169 m high (Scott et al, 2007). Other tailings sand dams currently under study in South America would have final heights of over 300 m. The dam height indicated is the measurement of vertical distance between the dam crest and its foundation.…”

Section: Trend To Increase the Height Of Tailings Damsmentioning

confidence: 99%

Design, construction, operation and the effect of fines content and permeability on the seismic performance of tailings sand dams in Chile

Valenzuela¹

2016

Obras y Proyectos

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Section: Trend To Increase the Height Of Tailings Damsmentioning

confidence: 99%

Design, construction, operation and the effect of fines content and permeability on the seismic performance of tailings sand dams in Chile

Valenzuela¹

2016

Obras y Proyectos

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“…Major artillery guns may have an associated inclinometer used to facilitate the aiming of shells over long distances [ 7 , 8 ]. Permanently installed inclinometers are employed at major earthworks such as dams [ 9 , 10 ] to monitor the long-term stability of the structure. Inclinometers can also be used in robotics [ 11 ] and to measure bridge deflections [ 12 ] for bridge safety evaluation.…”

Section: Introductionmentioning

confidence: 99%

High Accurate Mathematical Tools to Estimate the Gravity Direction Using Two Non-Orthogonal Inclinometers

Mortari

Gardner

2021

Sensors

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This study provides two mathematical tools to best estimate the gravity direction when using a pair of non-orthogonal inclinometers whose measurements are affected by zero-mean Gaussian errors. These tools consist of: (1) the analytical derivation of the gravity direction expectation and its covariance matrix, and (2) a continuous description of the geoid model correction as a linear combination of a set of orthogonal surfaces. The accuracy of the statistical quantities is validated by extensive Monte Carlo tests and the application in an Extended Kalman Filter (EKF) has been included. The continuous geoid description is needed as the geoid represents the true gravity direction. These tools can be implemented in any problem requiring high-precision estimates of the local gravity direction.

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“…When the depth of pit-slope increases, shear stress on the pit-slope surface will extensive due to increase in load gravity, the extent of this distressed zone will more radical accordingly. This condition brings the shear stress imposed on pit-slope is larger than the strength of the pit-slope, and it can cause the slope failure (Cho & Song, 2014;Scott et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Study of Internal Waste Dump-Induced Shear Stress Behavior on Pit-Slope

Wahyudi¹,

Shimada²,

Sasaoka³

et al. 2020

GEP

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Regardless of beneficial associated with internal waste dump (IWD) method, practices of this method within boundaries of pit-slope have some serious problems on stability issues due to this area is zone of potential failure. This zone is known as dynamic reactive zone which is easy to deform by external force, and inherent dangers of failure posing a threat to slope. Therefore, it is paramount to study the induced shear stress behavior in this zone particularly when IWD method is adopted within this zone. In this paper, a numerical study for investigating IWD-induced shear stress behavior has been carried out using Finite Element Method (FEM) with Strength Reduction approach. Different scenarios as per pit-slope depths, IWD heights and buffer zone lengths have been accounted and simulated using PHASE 2 to understand changes in induced shear stress imposed on the pit-slope. It is found that shear stress imposed on pit slope seems change dramatically with increasing IWD height for case of buffer zone length is less than 100-m-long.

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Use of Instrumentation to Safeguard Stability of a Tailings Dam

Cited by 7 publications

References 0 publications

Design, construction, operation and the effect of fines content and permeability on the seismic performance of tailings sand dams in Chile

Design, construction, operation and the effect of fines content and permeability on the seismic performance of tailings sand dams in Chile

High Accurate Mathematical Tools to Estimate the Gravity Direction Using Two Non-Orthogonal Inclinometers

Study of Internal Waste Dump-Induced Shear Stress Behavior on Pit-Slope

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