A discrete numerical model for granular assemblies

77A

Geomechanics Abstracts

methods, field vane test, a ~ hydraulic frac~urIng), (5) embankment d e s i g n a ~ porforma--e, (6) foumdations and tummlling. Selected papers are given separate entries in this ismmm.

General

PJBLICATIONS OF THE ~JNGARIAN MINI~ I I ~ I ~ , NO 20, 1977 Budapest: The Institute, 1977

794001 NUM~BICAL METHODS IN ~ C S , AACHEN, 1979 (IN 2 ~ S ) Wittke, W (editor) ROtterdam: A A Balkema, 1979, 1252P Comprises the first 3 vol~es of the Proceedings of the 3rd International Conference on Nkm~rlcal Methods in Geomechanics, Aachen, 2-6 April 1979. Vol I contains the following sections: theoretical developments, flow and consolidation, constitutive laws. Vol 2 : rock behaviour, undoground openings, embankments anl slopes, dynamics. Vol 3: soil-structure interaction in four~ations and retainir~ structures. A total of 126 papers is given. 794002 NEW GROUND ENGINe"RING IDEAS IN JAPAN In: Grourd Engineering Review, ~ ~ing in Soft Grouni (Ir~ormation from 9th International Conference on S o i l Mechanics and Foum~ dation Er~ineering, Speciality Session NI,

TO.o. 1977). Hay 1978. n-~ Gives an o v e r v i e w of. papers "co t h e Co~ference on developments in ground engineering. Topics covered briefly are: slurry solidification techniques, grout injection usir~ water Jets, tunnelling with l~essurised s l u r r y s shield tunnellimg amd ground freezing. Avail: Dipl Ing W M Braun, 8 Rowan Road, London W6 7DU, ~K 794003 GEOTECHNICAL ENGINEERING FOR COLD REGIONS Amd~slard, 0 B; Anderson, D M (editors) New York: McGraw-Hill, 1978, 566P Includes contributed chapters on: descriptive amd geotechnical aspects of cold regions, physical amd thermal properties of frozen ground, ground thermal regime, thaw consolidation, mechanical properties of frozen ground, foundations for cold regions, slope stability in cold regions, response of frozen ground to d ~ m ! c loading s field investigations of frozen ground, ice pressures and bearing capacity. 79400~ GEOTECHNICAL ASPECTS OF SOFT CLAYS Bremner, R P; Brand, E W Proc International Symposium on Soft Clays, Bamg~ok, 5-6 July 1977, 70~P. lh~l Bar~kok: Asian Institute of Technolo@~, 1977 Comprises ~7 papers covering the following main topics: (1) engineering geology ard general properties of clay deposits (Far Eastern marine clays), (2) s t r e s s - s r ~ r a i n and stremgth characteristics (including consolidation, deformation and pore pressure response), ~) compressibility and settlement, (~) sampling and in situ deterruination of properties (including self-boring .M.S. 16:4

D

Includes papers from %he Seventh Conference on water management in mining, Budapest, October 1976, and a E,,mber of other papers (in Emglish, French, German, Hungarian and Russian). J e c t s covered incl~le block cavi~ in bauxite mining, s ~ ~y light metsl crossbars area hydraulic props, a l ~ X ~ w e i ~ m A p p ~ system, role and behaviour of st*-~mg, m e a s l n ~ of vibrstion velocities, photographic recording of explosion shock waves.

7~o~

STRESS AND STRAIN. BASIC CONCEPTS OF CO~INUL~4 MECHANICS FOE GEOLOGISTS Means, W D New York: Sl~inger Verlag, 1976, 338P This is an elementary text book on stress strain theory for geologists, particularly students of structural geology 8md tectonics. It comprises ~ sections: (I) introductions (2) stress, (3) deformation ami strain, incl~ing infinitesimal ard finite strain ten, ors anl strain history, (4) relations between stress ~ strain for ideally alastic amd ideally viscous materials.

Properties of Rocks and Soils 794007 DISCRETE NUMERICAL MODEL FOR GRANULAR ASSEMBLIES Cundsll, P A; Strack, 0 D L Geotechnlque, V29, Nl, March 1979, ~%7-65 The distinct element method described is a ~ical model capable of describing the mechanical bahaviour of assemblies of discs and spheres. The method is based on the use of an explicit ~ i c a l scheme in which i~eraction of the particles is monitored com~ac~ by contact amd the motion of the particles modelled particle by particle. The method is validated by comparing force vector plots obtalmmi from the computer program with the corresponding plots obtained from a photoelastic RnA]ysis of an assembly of discs.

?~o~ CAP MODEL GUIDED BY ENERGY CONCEPT Ysmada, S E; Abou-Sayed, A S J Geotech Emgng Div ASCE, VI05, NGT2, Feb 1979, P183- 200