WorldCat Identities

U.S. Army Engineer Nuclear Cratering Group

Overview
Works: 96 works in 110 publications in 1 language and 294 library holdings
Genres: Methods 
Roles: Originator
Classifications: TA7,
Publication Timeline
Key
Publications about U.S. Army Engineer Nuclear Cratering Group Publications about U.S. Army Engineer Nuclear Cratering Group
Publications by U.S. Army Engineer Nuclear Cratering Group Publications by U.S. Army Engineer Nuclear Cratering Group
Most widely held works about U.S. Army Engineer Nuclear Cratering Group
 
Most widely held works by U.S. Army Engineer Nuclear Cratering Group
Analytical and graphical methods for the analysis of slopes in rock masses by A. J Hendron ( Book )
3 editions published between 1971 and 1980 in English and held by 25 WorldCat member libraries worldwide
In this report the methods of analyzing the static stability of rock slopes cut by a three-dimensional network of discontinuities are given. The general use of vector analysis to solve these problems analytically is described and a method utilizing stereonets to solve these problems graphically is also given. For both the graphical and analytical methods the general analysis of slopes cut by one, two, or three sets of discontinuities is presented which can take into account the porepressures acting on the discontinuities and external forces acting on the slope. Detailed examples are given to illustrate both the graphical and vector methods of analysis. The dynamic stability of slopes is also treated in this report. It is shown that the dynamic resistance of a three-dimensional rock slope can be calculated by either the graphic-stereonet method or the analytic vector analysis method. The dynamic resistance can then be used to estimate the movement of the slope under dynamic loading using a procedure given by Newmark (1965). A criterion is then given for determining if the calculated movement of the rock slope is acceptable or harmful. (Author)
The behavior of sands under seismic loading conditions by Marshall L Silver ( Book )
4 editions published in 1969 in English and held by 14 WorldCat member libraries worldwide
Project Pre-GONDOLA II, survival of hypothetical preemplaced charges by Charles E Joachim ( Book )
1 edition published in 1968 in English and held by 12 WorldCat member libraries worldwide
Seepage characteristics of explosively produced craters in soil and rock by Walter C Sherman ( Book )
3 editions published between 1969 and 1970 in English and held by 10 WorldCat member libraries worldwide
The report contains a review of the permeability characteristics of soil and rock formations in both disturbed and undisturbed conditions which are likely to occur in the zones surrounding craters. The report presents methods of determining permeability and tabulates typical values of permeability in a variety of materials. Factors which affect the seepage characteristics of craters are discussed, and a few examples are presented to illustrate the influence of seepage on stability calculations. The data indicate that laminar-flow conditions will prevail in soil and rock formations, depending upon the size of the pore opening and hydraulic gradient. For a given pore opening, a critical gradient exists above which the flow is found to be turbulent; the technique of constructing flow nets for turbulent flow is illustrated in the report. The correct assessment of seepage conditions in the zones surrounding a crater will depend to a large extent upon the correct evaluation of boundary conditions, such as geological discontinuities and sources of seepage. (Author)
Selected methods for analyzing the stability of crater slopes by D. C Banks ( Book )
1 edition published in 1968 in English and held by 10 WorldCat member libraries worldwide
Initiation of failure in slopes in overconsolidated clays and clay shales by Ioannis V Constantopoulos ( Book )
2 editions published in 1971 in English and held by 9 WorldCat member libraries worldwide
The conditions leading to the initiation of failure in slopes of overconsolidated clay or clay shale are investigated by means of two finite element programs. The analysis is two-dimensional and assumes plane strain in a homogeneous semi-infinite mass. The material is assumed to be linearly elastic and isotropic with body forces. No pore pressure effects are analyzed. The effects of initial stress ratio, slope angle, and available friction, are investigated for two smooth bottom models and the one rough bottom model. The results are presented in a dimensionless ratio involving the cohesion required to prevent the beginning of failure and the overburden stress at the toe before excavation
Construction techniques and costs for emplacement of nuclear explosives in disturbed media by James L Hair ( Book )
1 edition published in 1969 in English and held by 9 WorldCat member libraries worldwide
The purpose of this report is to discuss the feasibility of emplacement construction through disturbed crater media produced by underground explosions. The primary use for these shafts will be for emplacement of nuclear explosives in order to extend a partially completed nuclear excavation or modify the geometry of an existing crater. A secondary usage will be to provide access for recovery of previously buried but undetonated devices. The area which is expected to provide the greatest potential for this type of emplacement will be civil works projects where nuclear explosions are used as a construction tool. (Author)
Project TANK TRAP : a field evaluation of nuclear terrain barriers ( Book )
1 edition published in 1969 in English and held by 9 WorldCat member libraries worldwide
Variation in angle of internal friction with confining pressure by D. C Banks ( Book )
1 edition published in 1969 in English and held by 8 WorldCat member libraries worldwide
Quarrying with nuclear explosives by Aleksandar Sedmak Vesić ( Book )
1 edition published in 1970 in English and held by 8 WorldCat member libraries worldwide
Engineering properties of nuclear craters : by R. C Hirschfeld ( Book )
2 editions published in 1965 in English and held by 7 WorldCat member libraries worldwide
This report is concerned with the slope stability problems which will arise if a new channel is excavated through the types of weak shale encountered along the present panama Canal. It includes (a) a discussion of the need for slope stability analyses for new routes, and the approaches which might be used to obtain the necessary data; (b) a review of past experience with slopes in the field and with laboratory tests, especially experience with the present Panama Canal; and (c) a description of some new studies, including first attempts at reanalysis of the landslide experience at the Panama Canal and development of new laboratory test equipment
Study of explosives for lunar applications by U.S. Army Engineer Nuclear Cratering Group ( Book )
1 edition published in 1971 in English and held by 7 WorldCat member libraries worldwide
Preshot geological and engineering conditions at the Project Flivver site, Nevada Test Site by Louis D Carter ( Book )
1 edition published in 1967 in English and held by 7 WorldCat member libraries worldwide
The site of the Flivver experiment is in basalt on the central ridge of Buckboard Mesa, Nevada Test Site. A soil layer averaging 2 feet thick covers the site. The basalt, which is about 237 feet thick at the Flivver site, can be divided into three units: an upper, vesicular unit; a middle, dense unit; and a thin, basal vesicular unit. Deformation of vesicles and concentration of vesicles into layers during viscous flowage have imparted a pronounced layering to the basalt. The orientation of these layers indicates that the major structure of the ridge is cylindrical. Minor folding in the upper portion of the flow complicates this structure. The trend of the ridge and the attitudes of flow layers indicate that the flow curved eastward as it flowed south-southeast across the site. (Author)
Survey of slope failures in reservoirs by Walter C Sherman ( Book )
1 edition published in 1968 in English and held by 6 WorldCat member libraries worldwide
Engineering properties of nuclear craters : by Roger T Saucier ( Book )
1 edition published in 1965 in English and held by 6 WorldCat member libraries worldwide
Investigations were conducted to select a site suitable for producing craters in a saturated cohesive medium by small-scale high-energy detonations. According to prescribed criteria, the ideal site would be a large (200 acres or more), cleared, moderately flat tract of Federally owned land characterized by soft, homogeneous clays to a minimum depth of 40 feet. An evaluation of the U.S. by physical divisions revealed that suitable sites might occur in four general areas, i.e. (1) the Lake Bonneville area, (2) the Lake Agassiz area, (3) the Great Lakes area, and (4) the Lower Mississippi Valley area. Acquisition and analyses of pertinent data on these areas indicated a need for field reconnaissances except in the case of the Great Lakes area which was eliminated from further consideration because of heterogeneous soil deposits. A reconnaissance of the Lake Bonneville area indicated the presence of apparently favorable test site conditions in a portion of the Dugway Proving Ground, Utah. The Dugway site was concluded to be the most suitable for the project. (Author)
Application of finite element method in determining stability of crater slopes by J. B Palmerton ( Book )
1 edition published in 1972 in English and held by 6 WorldCat member libraries worldwide
Engineering properties of nuclear craters : by H. G Herrmann ( Book )
1 edition published in 1966 in English and held by 6 WorldCat member libraries worldwide
Project Pre-Schooner, PNE 501 F : stem design and shotcrete, grout, and concrete support by K. L Saucier ( Book )
1 edition published in 1964 in English and held by 6 WorldCat member libraries worldwide
Project Pre-Buggy, PNE 302 : emplacement and firing of high-explosive charges and crater measurements by Allen D Rooke ( Book )
1 edition published in 1965 in English and held by 6 WorldCat member libraries worldwide
Settlement of fallback materials by Walter C Sherman ( Book )
1 edition published in 1968 in English and held by 5 WorldCat member libraries worldwide
 
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Audience Level
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Audience Level
1
  Kids General Special  
Audience level: 0.62 (from 0.00 for Seepage ch ... to 1.00 for Constructi ...)
Alternative Names
Engineer Nuclear Cratering Group
Engineer Nuclear Cratering Group United States, Army
NCG
United States. Army. Engineer Nuclear Cratering Group
United States Engineer Nuclear Cratering Group
US Army Engineer Nuclear Cratering Group
Languages
English (30)