65A

The study shows that piping commonly develops in alluvial deposits in t he vicinity of arroyo- cuts a~d deeply incised gullies actively trench- i~g in the flood plain deposits. Soils suscept- ible to pipi21g usually comprise silts and silty sands with a low clay content, and they are generally of low dry density, high void ratio, and have collapsimg properties.

Earthquake mechanisms and effects

804078 CLASSIFICATION OF EARTHQUAKE PRECURSORS Rikltake, T Tectonophysics, V54, 1979, P293-309

A review with 51 refs.

804079 S~Y OF THE CHARACTERISTICs OF STRONG MDTION FOURIER SPECTRA ON B~DROCK

I shida, K Bull Seismol Soc Am, V69, N6, Dec 1979,

P2101-2115

Relates to the earthquake-resistant design of structures.

804080 SOME CHARACTERISTICS OF FORESHOCKS AND TH~IH POSSIBLE RELATIONSHIP TO EARTHQUAKE PReDIC- TION AND I~ONITORY SLIP ON FAULTS

Jones, L M; Mol~ar, P J Geophys Res, V~, NB7, l0 July 1979,

P3596-3608

804081 EARTHQUAKE PREDICTION AND SEISMICITY PA~*IERNs. SPECIAL ISSUE wyss, M (editor) Pure Appl Geophys, Vll7, ~6, 1979, P1079-

1315

8 o ~ 2 0 B ~ V A T I O N A L BASIs FOR ~ T E Q U A ~ PR~ICTION SPECIAL ISSUE

Suzuki, Z; Evison, F F (editors) Fhys Earth Planet Inter, VI8, N~, April 1979,

P257-354

Gives 8 papers and 5 extended abstracts from the symposium of 16 August 1977, in the follow- ing groups: precursory seismic activity, delays in travel time prior to large earthquakes, other types of l~ecursors.

Hydrogeology Groundwater

804083 EVALUATION TECHNIQUES OF FRACTURED ROCK HYDROLOGY

Legramd, H J Hydrol, V43, NI-4, Oct 1979, P333-3h6

80~084 DEPRESSURIZATION OF A MULTI-LAYERED ARTESIAN SYSTem4 FOR WATER AND GROUT CONTROL DURING DEEP MINE-SHAFT DEVELOPME~

Greenslade, W M; Co~t, G W J Hydrol, V43, NI-4, Oct 1979, I~17-536

804085 ME~0D FOR DNI'zHMINATION OF ANISOTROPIC CO- EFFICIENTS OF I~ILITY AND SPECIFIC STORAGE FROM I~IMPING TEST DATA Kono, I; Nishlgaki, M Soils FOund, VIg, NI, March 1979, P55-62

Underground Excavations 804086 LNG sTORAGE IN INSULATED ROCK CAVERNS

Christemsonj K Undergrottnd Space, V~, ~, Jar~Feb 1960,

P209-216

Describes a method involving spraying a thermal and vapour-tight insulation directly on to the rock s~face, and reports laboratory a~ pilot scale tests with LNG and liquid nitrogen.

804087 UNDERGROUND OIL STORAGE PIONEERING IN HAWAII Jones, L S Underground Space, V4, N3, Nov-Dec 1979,

P165-169

One of the 'Lest we forget' series of case histories, describes the 1940-43 project at Pearl Harbour amd discusses how costs might have been reduced by 50 per cent with the aid of today's technology.

804088 ENGINEERING GEOLOGICAL INVESTIGATIONS FOR U~DE~ROUND 0PE~NGS IN ROCK (IN ~,~RWEOIAN)

Broch, E NQrges Geol U~ders, N352, 1979, 32P

Outlines procedures used in planning s_nd con- struction of umdergroumd openings in rock including field investigations, underground investigations, and ~m~l mapping.

804089 LOAD-CARRYING CAPACITY OF CRACKED RIGID PIPES - A PRELIMINARY SvlrdDY

Trott, J J; Stevens, J B Transport and Road Research Lab supplement-

ary report 534, 1980, 24P

Avail: TRRL, 01d Wokingham Road, Crowthcrne, Berks, UK

Mines

See also: 804084

804090 SCHACHT PROSPER lO - SI~ING INTO THE Harding, P G Ttmn Turallg, VI2, N1, Jan-Feb 1980, P35-37

Describes some current tunnelling and shaft sinking activities of Gewerkschaft Walter of West Germar~, in particular the Prosper lO shaft at the Prosper coal mine near Essen. The shaft is 8m in diameter, 1047m deep, and the upper 124m were sunk through water bear- ing unstable sands using calcium chloride brine freezing, and a fully flexible sliding lining I not connected to the rock, installed in this region.

804091 PROGRESS ON THE DRIFT AND SHA~S AT THE SELBY COALFIELD DEVELOPMENT

FoYer est s W Tural Tur~g, VI2, NI, Jan-Feb 1980, P53-55

Briefly describes the geology of the area and discusses the driving of two i in 4 drifts at Gascoigne Wood and the shaft sinking at Wistow.