This report describes the static and dynamic loading of a 12-inch-wide by 18-inch-deep by 6-foot-long rigid footing, representing the strip footing of a subsurface shelter. Boundary conditions simulated those of a torsionally restrained footing of a flexible arch structure with simulated overburden of 20 feet at one side of the footing. Saturated and partially saturated sand was the test soil. ...

We derive interferometric field representations that are valid for diffusive field methods. The method retrieves the reflection response of the earth, as if the domain above the receiver depth level is homogeneous. It is represented as the flux-normalized up going field deconvolved by the down going field. The deconvolution step can be seen as a weighted crosscorrelation step, which is the usua...

Site U1322 is the easternmost site drilled in the Ursa basin by Expedition 308. Of the three sites in the Ursa Basin, Site U1322 has the thinnest sediment cover above the permeable Blue Unit. The principal objectives of drilling Site U1322 were to document rock physical properties at the location of minimal overburden in the Ursa Basin, measure in-situ formation temperature and pressure, docume...

Progress toward the development of an electromagnetic pulse sounding probe for the detection and delineation of geological anomalies, primarily in a hard rock medium, is reported. This report covers research performed on Contract H0210042 during the period 24 February 1971 to 23 February 1972. Analytical studies on design data for the probe and on the scattering by planar and spherical contrast...

Mining operations cause volumetric deformations within the rock mass and changes in its density, to which gravimetric method is sensitive. These are particularly well seen periodic measurements of local gravity field. The paper analyses relationship between movement a longwall coal seam change distribution field time space observed on ground surface. Relative were carried out six series 2018 20...

For the sustainability of lignite and coal mining, engineers need soils' appropriate geotechnical characterisation excavations. This relates to slope stability, overall area sustainable exploitation mining areas during operational post-closure eras. work presents a novel perspective on soil mine Rather than focusing one particular mine, comprehensive provides insights about soils related areas....

Exploitation of lignite in continuous surface mines requires removing masses overburden, which are hauled to a dumpsite. There some technological arrangements where the overburden is transported several dozen meters down spreader operating on lower located dumping level. Depending an angle declined transportation route, there possibility convert potential gravitational energy conveyed into elec...