Hierarchical social networks appear in a variety of contexts, such as the on-line social network Twitter, the social organization of companies, and terrorist networks. We examine a dynamic model for the disruption of information flow in hierarchical social networks by considering the vertex-pursuit game Seepage played in directed acyclic graphs (DAGs). In Seepage, agents attempt to block the mo...

Water injection-induced rock softening and the associated water seepage characteristics are common basic problems in underground reservoir construction prevention of mine disaster. In this paper, a series experimental studies was carried out to investigate these with weakly cemented sandy mudstone collected from Shendong Buertai coal mine, China. The stress-seepage interactions water-saturated ...

Shale gas storage and permeability space is between nanometers micrometers has strong multiscale characteristics, resulting in highly complicated shale flow. Therefore, the development of needs to clarify seepage mechanism establish a flow model equation that can analyze In this paper, based on single nanotube model, combined with Weiyuan-Changning demonstration zone target layer Longmaxi forma...

This study investigates percolation and seepage through the bunds of flat and terraced paddies. Field experiments were conducted in Hsin-Pu of Hsin-Chu County, Taiwan, to measure the soil water content of various types of bund. Measurements revealed that the soil was unsaturated along the sloped surface of the terrace. Experimental results also indicated that seepage face flow did not develop e...

Abstract After long-term water injection development, most of the oilfields in China have entered stage high-water cut, which has reached up to 90%. Due strong heterogeneity reservoir, more than 50% oil remains underground oilfields. Therefore, how predict distribution and content remaining quickly accurately heterogeneous reservoir become key EOR. In this paper, a new effective water-flooding ...

Foam injection is widely applied in amounts of fields to drilling, production, and formation protection. Sometimes, the application result is disappointing, which is caused by the failure of bubble generation in foam flooding. Therefore, it is necessary to seek ways for improving the performance of foam injection. An increased disturbance to the stratum, like the vibration caused by a seismic o...

Evaporation estimates are often used in water balance calculations to determine seepage rates from feedyard holding ponds and lagoons. These estimates have been made using empirical equations derived for clear water, Class A Pan evaporation measurements using clear water, and rule-of-thumb estimates. However, feedyard effluent has different physical and chemical characteristics than clear water...

Generally seepage analysis and stress–strain analysis are conducted separately in the analysis of dams with varied water levels, which neglects the impact of soil deformation on seepage. The impact, however, is significant when the water level varies greatly. In this study, a simplified approach for consolidation analysis of unsaturated soil is used to conduct numerical simulations of water-fil...

Upper Gotvand dam is constructed on the Karun River located in the south west of Iran. In this paper, 2D and 3D models of the dam together with the foundation and abutments were constructed and several seepage analyses were carried out. Then the gypsum veins scattered throughout the foundation ground and also the seepage pattern were included in the models, hence the dissolution law of gypsum, ...