Thermal and rheological computations for artificially frozen ground construction

Sanger, Frederick J.; Sayles, Francis H.

doi:10.1016/0013-7952(79)90040-1

Cited by 73 publications

(53 citation statements)

References 5 publications

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“…In this section, three of the most commonly used solutions for designing AGF operations (Ständer, 1967;Victor, 1969;Sanger & Sayles, 1979) will be summarised and compared with the laboratory test results. The solutions have all been derived for a single freeze pipe.…”

Section: Comparison With Closed-form Solutions Closed-form Solutionsmentioning

confidence: 99%

“…They assume rotational symmetry around the pipe, and saturated, homogeneous ground. The soil parameters are assumed to be constant T40 T40 Pipe Pipe Pipe Pipe T35 T35 T34 T34 T33 T33 T32 T32 T31 T31 T30 T30 T29 T29 T28 T28 V5 Pipe T35 T35 T34 T34 T33 T33 T32 T32 T31 T31 T30 T30 T29 T29 T28 T28 V3 V4 T40 T40 Pipe Pipe Pipe Pipe T35 T35 T34 T34 T33 T33 T32 T32 T31 T31 T30 T30 T29 T29 T28 T28 V1 V2 20 20 Sanger & Sayles (1979), Ständer (1967) and Victor (1969) (x-coordinate denotes distance from central pipe in Fig. 3) over the relevant temperature range, for both the unfrozen and the frozen phases.…”

Section: Comparison With Closed-form Solutions Closed-form Solutionsmentioning

confidence: 99%

“…The solutions are based on the Fourier conduction equation, and consider the latent heat due to water freezing at the interface between the unfrozen and frozen soil. The solutions of Ständer (1967) and Sanger & Sayles (1979) have been derived for the case where there is no seepage flow, whereas the solution of Victor (1969) can be applied for both cases, that is, with and without seepage flow.…”

Section: Comparison With Closed-form Solutions Closed-form Solutionsmentioning

confidence: 99%

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Large-scale laboratory tests on artificial ground freezing under seepage-flow conditions

Pimentel¹,

Sres²,

Anagnostou³

2012

Géotechnique

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A high seepage-flow velocity represents a potential problem for artificial ground freezing (AGF), as it may hinder the growth of an ice body and the development of a closed ice wall. To avoid such difficulties, careful thermal hydraulic analysis is necessary. This presupposes, of course, that the reliability of the underlying computational models has been verified by means of comparisons with the results of appropriate field tests or physical models. As there are scarcely any results of such tests available in the literature, a new large-scale physical model for AGF under conditions of high seepage-flow velocities has been developed. The present paper documents in detail the experimental set-up, the thermodynamic properties of the soil material, the boundary conditions, and the results of six experiments. These data are valuable as a reliable basis for the evaluation of numerical or analytical prediction models. Additionally, the paper discusses existing closed-form solutions for AGF with and without seepage flow in the light of the experimental results, from the perspective of the refrigeration time and the cooling power required for the merger of a freeze-pipe row.

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Section: Comparison With Closed-form Solutions Closed-form Solutionsmentioning

confidence: 99%

Section: Comparison With Closed-form Solutions Closed-form Solutionsmentioning

confidence: 99%

Section: Comparison With Closed-form Solutions Closed-form Solutionsmentioning

confidence: 99%

See 1 more Smart Citation

Large-scale laboratory tests on artificial ground freezing under seepage-flow conditions

Pimentel¹,

Sres²,

Anagnostou³

2012

Géotechnique

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“…In an effort to enhance the air flow rate through a ducted foundation, U.S. Army CRREL engineers employed the use of the chimney effect by connecting manifolds and vertical stacks to the ducts (see Sangar and Sayles, 1979;. Design methods were advanced for this foundation type, in which the theoretical air flow induced by the chimney was estimated, and a total heat balance was carried out to determine the amount of insulation and ducts required.…”

Section: Natural Ventilation Through Air Ducts In Padsmentioning

confidence: 99%

“…Solutionfor radial freezing around a cylindricalfreezing pipe (after Harlan & Nixon, 1978). (Sangar & Sayles, 1979). based on a compilation of actual brine temperatures during freezedown for several sites in Washington is presented in Figure 6.…”

Section: Thermal Designmentioning

confidence: 99%

Thermal Analysis, Construction, and Monitoring Methods for Frozen Ground

Esch¹

2004

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FOREWORD111C ASCE Tt.~hnical Council ()n Cold Regions Erlgineering (TCCRE) }u;1.S established the Technic.al C()nlmittee on Frozen Ground f()r the purpose of~ncouraging development of new scientific and engineering knowledge of freezing and thawing of soil-water systenls and perrnancntly frozen ground, and fostering dissemination of this knowledge. To help accolnplish these objectives, TCCRE is publishing a series of Monographs on various cold regions engineering subjects. Each monograph reviews the state of the practice within a defined area through a set ofpapers written by invited experts in the field.This Monograph is the ninth in the series and the first of the 21 st century. It focuses on the methods used to control freezing and thawing of soils in engineered facilities, on the calculations used to predict the thennal consequences and analyze the benefits of various approaches, and on the field monitoring methods used to monitor thennal perfonnance. Much of itVlas drawn from an earlier Il1oI1ograph, published by ASCE in 1985, and titk.xi 111errnal Design Con.siderations in rrozenGrc>1l11d Engillt~(}ring. AU of the nine chapters in thnt volUlne w(..,-e incorporated in th.is new nlon{)graph. . with Illost ()f thetll being extensively reviSt.'"d and updated. Four new chapters were ndded t<) cover rt,~ent devel()pments in this field, including un overview of the toreca~ts and anticipatt..xl cOI1St-quences ()f cliu18te change on cold regions.Many people were inv()lved in the preparatit)n of this rl1onognlph. 111e chapter ,1uthQrs are tt) be given mc)st of the credit and the fact that many are Il{)t AseE Inenlbers is particularly noted. Thanks are due to the Editors ()f the previous rnonograph n"ted above; R.G. Tart and T.G. Krzewinski.~I11is InQf1ogroph was edited D.C. Esch, with the extens.iveassistance of Susan Mitchell at Inkworks {1f Fairbanks., who converted the earlier 11lonograph chapters into a uniform format, inc()11X)rat(.~updates and review Ctlmnlcnts, and prt..,'>8rCd the final document for publishing. F~ch paper had at least two technical reViCYls. In the table that follows all reviewers are listed, and their assistance is greatly appreciated. Without them this monograph would not be of the high quality that it is. All papers (chapters) 8.re eligible for discussion in the Journal o-f Cold Regions l~ngineering and all papers with significant new content are eligible for ASeE awards.iii Downloaded from ascelibrary.org by New York University on 07/29/15.

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Deformation of debris-ice mixtures

2014

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Mixtures of rock debris and ice are common in high-latitude and high-altitude environments and are thought to be widespread elsewhere in our solar system. In the form of permafrost soils, glaciers, and rock glaciers, these debris-ice mixtures are often not static but slide and creep, generating many of the landforms and landscapes associated with the cryosphere. In this review, a broad range of field observations, theory, and experimental work relevant to the mechanical interactions between ice and rock debris are evaluated, with emphasis on the temperature and stress regimes common in terrestrial surface and near-surface environments. The first-order variables governing the deformation of debris-ice mixtures in these environments are debris concentration, particle size, temperature, solute concentration (salinity), and stress. A key observation from prior studies, consistent with expectations, is that debris-ice mixtures are usually more resistant to deformation at low temperatures than their pure end-member components. However, at temperatures closer to melting, the growth of unfrozen water films at ice-particle interfaces begins to reduce the strengthening effect and can even lead to profound weakening. Using existing quantitative relationships from theoretical and experimental work in permafrost engineering, ice mechanics, and glaciology combined with theory adapted from metallurgy and materials science, a simple constitutive framework is assembled that is capable of capturing most of the observed dynamics. This framework highlights the competition between the role of debris in impeding ice creep and the mitigating effects of unfrozen water at debris-ice interfaces.

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Thermal and rheological computations for artificially frozen ground construction

Cited by 73 publications

References 5 publications

Large-scale laboratory tests on artificial ground freezing under seepage-flow conditions

Large-scale laboratory tests on artificial ground freezing under seepage-flow conditions

Thermal Analysis, Construction, and Monitoring Methods for Frozen Ground

Deformation of debris-ice mixtures

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