Ground uplift

We simulated the ground uplift that is the main cause for tensile casing damage in south-ll pool of... 

Ground Uplift of ground, 1) Depth and distribution of soil layers Commonly 1) Building loading Area of... 

ICim, H.M., Park, D., Ryu, D.W. and Song, W.K. 2012. Parametric sensitivity analysis of ground uplift above pressurized underground rock caverns. Engineering Geology 135-136 60-65. 

A few studies to monitor our environment with ESR are included in this section. The ESR dating of marine terraces using shells and corals determined the age of the high sea levels and the tectonic uplift of islands.1 The variation of S03 indicated global environmental effect of volcanic eruption.1 ESR spectra of frozen rains, snow and frost as well as ground and river water indicated some... 

VMG Model of the vertical uplifting of ground water in evaporation, feeding, and exfiltration. 

Titus, F. B., 1961, Ground-water geology ofthe Rio Grande trough in north-central New Mexico, with sections on the Jemez Caldera and Lucero Uplift, Guidebook of the Albuquerque country in Northrop, S. A., ed., 12th Field Conference, New Mexico Geological Society, p. 186-192. 

Lateral combs also exert a vertical uplift on the structure, an effect that can be used in situations where such a force is needed but electrodes above the structure are not available [4], An appropriately engineered ground plane underneath the comb reduces the effect when it is not desired [14]. 

Hydraulic uplift phenomena are associated with artesian conditions, that is, when water flowing under pressure through the ground is confined between two impermeable horizons (see the previous text). This can cause serious trouble in excavations, and both the position of the water table and the piezometric pressures should be determined before work commences. Otherwise, excavations that extend close to strata under artesian pressure may heave or, worse, may be severely damaged due to blow-outs taking place in the floors. Slopes also may fail. Indeed, such sites may have to be abandoned. 

Post-glacial marine clays uplifted by glacial rebound (Geomorphological Cause 3) occur on Canada s coasts. As the saline water is leached from their pore spaces, the clays become sensitive. Developments on these clays may be caught up in natural slides and spreads (Ground Cause 2), which liquefy into flows (Tavenas et al., 1971, Brzezinski 1971). 

Figure 5. Uplift of the ground surface after the sand liquefaction.

The merit of a deep foundation over a shallow foundation is manifold. By involving deeper geological materials, a deep foundation occupies a relatively smaller area of the ground surface. Deep foundations can usually take larger loads than shallow foundations that occupy the same area of the ground surface. Deep foundations can reach deeper competent layers of bearing soil or rock whereas shallow foundations cannot. Deep foundations can also take large uplift and lateral loads whereas shallow foundations usually cannot. 

However, driven concrete piles are not suitable if boulders exist below the ground surface where piles may break easily and pile penetration maybe terminated prematurely. Piles in dense sand, dense gravel, or bedrock usually have limited penetration consequently, the uplift capacity of these types of piles is very small. 

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