نتایج جستجو برای: clayey soil
تعداد نتایج: 181371 فیلتر نتایج به سال:
The leakage of oil products which results in making the soil pollute or impure and alter its physical mechanical properties due to presence hydrocarbons it. Those cannot be passed into through pores become congest on top land. Hence it is necessary indicate know geotechnical contaminated soil. Recently modern technique an encompassing laboratorial system intends encourage improve high level det...
the engineering properties of soils are generally affected by parameters such as mineral type, structure, and pore water salinity. the existing solutes of soil play a role in the electrochemical forces between particles and can change the index and mechanical properties of soil, including cohesion, compressibility, and compactibility. this study investigated the effect of sodium chloride, sodiu...
Three main features of paleosols are useful for distinguishing them from enclosing rocks: root traces, soil horizons, and soil structures. Fossil root traces are best preserved in formerly waterlogged paleosols. In oxidized paleosols their organic matter may not be preserved, but root traces can be recognized by their irregular, tubular shape, and by their downward tapering and branching. Often...
According to the characteristics of groundwater in arid area, this paper proposes DRAV model for groundwater vulnerability assessment, where D is groundwater depth, R is the net recharge of aquifer, A is the aquifer characteristics, and V is the lithology of vadose zone. As a case study, the paper assesses the vulnerability of pore phreatic water in Tarim Basin of Xinjiang, China by using the D...
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