... and a quality control system has been established to check the properties of the drains and to supervise the construction process. For vertical drains, both the hydraulic and mechanical properties were checked before installation. Laboratory vertical drain testing devices were developed to measure the discharge...

... of lumps of typical dimensions from a few millimetres to a few hundred millimetres. The age of the fills is about 20 to 30 years and over this period they generally remained unsaturated down to the depths of 15 to 20 metres. Laboratory experiments with a model double porosity clayey material revealed high...

... frequency shear wave velocity characteristic Engineering laboratory Reservoir Characterization wavelength receiver Upstream Oil & Gas wave velocity specimen particle motion stiffness application santamarina p-wave velocity wave propagation anisotropy procedure stokoe...

.... The US EPAÕs Lining of Waste Impoundment and Disposal Facilities (US EPA 1980) discusses asphalt concrete liners in section 3. Haxo and White (1976) measured laboratory conductivity of 3x10-9 cm/s on asphalt concrete with 9% asphalt cement. A test liner, exposed for 4.6 years was in good condition...

... ABSTRACT: A substantial part of the central and upper North Island of New Zealand consists of volcanic soil. To date very little data has been gathered on the dynamic properties of this material. A systematic field and laboratory study was under taken at three sites and an extensive amount...

... of Durham, UK ABSTRACT: Cartridge tools provide a rapid method of making fastenings in the civil engineering construction and mining industries. In this paper the authors describe how a proprietary cartridge tool was used to fire steel fastener studs into rocks both in-situ and in a series of laboratory...

... ABSTRACT: The methodology used for the laboratory measurements of the heat capacity and diffusivity of the rocks interesting a mine having an anomalous terrestrial gradient is presented, explicating the necessity to extend the research to some in situ determination both of the diffusivity...

... radioactive waste (HAW) disposal. The Delft laboratory of Mining Technology/Rock Mechanics has installed a measuring system consisting of 50 transmitters and 50 receivers combined with two ten-channel transientrecorders for the long term observation and recording of cataclastic effects in the rock salt around...

... ABSTRACT: New methods for the determination of mechanical rock properties in laboratory and in situ are described. The methods make possible speeding up and simplifying the investigations as well as increasing the reliability of the results obtained. Reported is the evaluation method of rock...

... ABSTRACT: The effect of injection-fluid flow through the borehole wall on hydraulic fracture breakdown pressure was studied theoretically and in the laboratory, for both low and high permeability rocks, under initially dry or saturated (under pore pressure) conditions. The results indicate...

... ABSTRACT: A description is given of the triaxial apparatus in our laboratory, which is capable of achieving the full range of crustal confining pressures (up to 1000 MPa), with an internal heater providing sample temperatures up to 1000°C. Rock samples ranging in diameter between 10 and 20mm...

... values which are then matched with those given in the standard tables leading to identification of various subsurface strata. The major drawback in this procedure is that, the resistivities of different materials available in standard tables are the resistivity values obtained in the laboratory under...

... mechanisms at lower T, σm¹, and r conditions. Salt and potash may be useful analogues in some conditions. Halite (NaCl) and sylvite (KC1) display different deformation processes depending on σm¹, T, and r, but in conditions accessible in the laboratory and the field (σm¹ <70MPa; r<40MPa; T<150°C...

... ABSTRACT: This General Report requested by the Organisers attempts to describe the state-of-the-art as perceived by the Reporter in the area of the determination of rock properties at great depth by physical methods. The paper focuses on laboratory studies of rocks under physical conditions...

... sand production log analysis sandstone mechanism prediction strength facies drawdown pressure drilling operation core analysis core quality Dusseault determination mechanical property sand production prediction deep reservoir sandstone critical drawdown pressure laboratory Santarelli...

... characteristics. 6 CONCLUSIONS Both the cross-hole and the laboratory. ultrasonic tests show that, in terms of mean values, the foundation mass can be considered as being adequate, and that the quarrings operations and stress relief due to removal 40m of overburden did not affect the quality of the rock at depths...

... is obtained by two built-in receivers. Laboratory and in situ tests have confirmed the usefulness of this machine. It is applicable for investigations of dams and their foundations. The paper describes the structure of the instrument and presents some test results. INTRODUCTlON To date, many in situ testing...

...Rock Mechanics andPower Plants, Romana (ed.) <C> 1988 Balkema , Rotterdam. ISBN9061918278 Thennomechanical fracturing of rock: Application to an elementary example in deep geothennics G.Berthomieu& P.Jouanna Civil Engineering Laboratory. Montp ellier, France ABSTRACT: The purpose of lhls sludy...

... through overcoring, and the Subsequent post-test calibrations of the stressmeters in the laboratory. The estimated in-situ stresses based on post test calibration data are quite consistent with those directly measured in nearby holes. The magnitude of stress change calculated from pre-test calibration...

... SUMMARY: A cycle of laboratory measurements, constitutive modeling and validation calculations is described as a basis for excavation design in rock salt. The results of triaxial creep tests were fitted by a creep model with exponentially decaying transients and power law thermally activated...