نتایج جستجو برای: ground pressure
تعداد نتایج: 545282 فیلتر نتایج به سال:
This paper suggests a new set of analytical solutions for predicting leakage-induced seepage field and ground settlement in saturated clay. A unique feature of the solutions presented is considering the effect of the tunnel lining through the relative permeability between the tunnel and the soil. Through the superposition method, the proposed method can be easily extended to twin parallel tunne...
Pressure-induced electronic transitions have been observed in a wide variety of materials. In particular, Mössbauer resonance studies under high pressure have revealed changes of oxidation state and spin state of iron as a function of pressure. These processes involve the thermal transfer of an electron to a new ground state of the system. The difference in energy between states is frequently m...
Using an ultracold gas of atoms, we have realized a quasi-two-dimensional Fermi system with widely tunable s-wave interactions nearly in a ground state. Pressure and density are measured. The experiment covers physically different regimes: weakly and strongly attractive Fermi gases and a Bose gas of tightly bound pairs of fermions. In the Fermi regime of weak interactions, the pressure is syste...
We present a thorough validation of a computational approach to predict infrasonic signatures of centimeter-sized meteoroids. We assume that the energy deposition along the meteor trail is dominated by atmospheric drag and simulate the steady, inviscid flow of air in thermochemical equilibrium to compute the meteoroid’s near-body pressure signature. This signature is then propagated through a s...
Sudden ground pressure disasters caused by deep mining such as rock burst and cave-in are major hidden dangers affecting safety production underground mine. The safe stable operation of monitoring platform is great significance for mine production. However, many small medium-sized enterprises make slow progress in the construction online due to limitations enterprise scale, capital capacity oth...
Analyzing the landslide situation is one of urgent scientific and practical problems in determining conditions for carrying out construction works protecting human life economic sectors from danger. Landslides can cause damage, disable large structures roads, destroy areas crops, villages cities. In this study, Akhangaran reservoir lands, techniques assessing slope stability, ground mass stabil...
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