To investigate slope stability under alternating excavation and rainfall disturbance to reveal the intrinsic mechanism of stress diffusion process caused by stress-seepage coupling, a method consisting separate simulation field seepage superposition analysis is proposed. Meanwhile, distribution pore water pressure transient saturation zone in AK2 + 210 ~ 610 section highway Guangdong Province, ...

DOI:10.17014/ijog.9.2.247-262 Pore pressure prediction using velocity-mean effective stress relationship is introduced in Madura Subbasin which located a compressional tectonic setting. The new workflow accommodates the three principal stresses, those are vertical stress, maximum horizontal and minimum form of mean as compaction main inducing agent. application this has resulted more accurate p...

Abstract Liquefaction in semi-permeable soils such as fine sands occurs when the required time to transfer pore water pressure into form of effective stress is longer than increased pressure. Therefore, liquefaction mitigation needs be done speed up air flow during an earthquake using vertical drains this study. The data used here are adopted from previous studies that have been taken a field t...

PURPOSE This study is to reveal the deformation of intervertebral disc (IVD), the stress distribution of solid phase and liquid phase, the variation of fluid flux and flow velocity in lumbar spine and the influence of different permeability parameters on them under intermittent compressive loading. METHODS A poroelastic FEM of L4-L5 is assigned with different permeability parameters to analyz...

Severe soil liquefaction due to a long duration earthquake with low acceleration occurred at Tokyo Bay area in the 2011 off the Pacific coast of Tohoku Earthquake. This phenomenon clearly shows that soil liquefaction is affected by properties of input waves. This paper describes effect of wave properties of earthquake on liquefaction using effective stress analysis with some earthquakes. Analyt...

HOUSTON–The fundamental properties of gas shales make them virtually impossible to analyze with conventional core analysis methods or petrophysical models based on log data. This includes permeabilities in the tens to hundreds of nanoDarcies, low effective porosities (typically less than 10 percent), and high kerogen and clay contents. The tightness of the rock and the abundance of clay mineral...

(See related article by A. Parikova et al. Free water transport, small pore transport and the osmotic pressure gradient. Free water transport, small pore transport and the osmotic pressure gradient three-pore model of peritoneal transport. Simonsen O et al. Fluid and electrolyte transport across the peritoneal membrane during CAPD according to the three-pore model. A et al. Aquaporin-1 plays an...

Fig. 1. Behavior of condensates on smooth surfaces and within pores. The surface wettability determines the contact angle θ and the curvature of a liquid condensate on a smooth surface (A) and within a pore (B), where θ and the pore diameter strongly affect the liquid’s vapor pressure (C), here for the case of liquid water. Capillary condensation of a liquid (red) and subsequent crystal (green)...

The Direct Simple Shear (DSS) test is one of the laboratory element testing devices that has been widely used to assess soil behavior. Although the DSS test is considered to simulate the cyclic shear loading mode from the earthquakes in an effective manner, the most commonly used versions of the test device (such as the NGI-type DSS device) do not provide means of measuring the lateral stresses...

One way to probe earthquake nucleation processes and the relation between stress buildup and seismicity is to analyze the sensitivity of seismicity to stress perturbations. Here, we report evidence for seasonal strain and stress (~2–4 kPa) variations in the Nepal Himalaya, induced by water storage variations which correlate with seasonal variations of seismicity. The seismicity rate is twice as...