1)coefficient of pressure reduction风压折减系数 2)reducement factor of pore water pressure水压折减系数 3)pressure reduction coefficient压力折减系数 1.The pressure reduction coefficient of PE gas pipeline is an important design p
Therefore, the reduction of the basal stress that must occur in mobile natural flows with excess pore pressure is not ascribed to the lowering of wall friction coefficient. Instead, lowering of the normal stress by fluid drag in flows with elevated pore fluid pressure justifies the definition of...
The reduction of the pore size of the throat makes it more difficult for water to permeate, thus reducing the permeability coefficient. It can be concluded that including attapulgite can effectively reduce the size of the pore throat of modified loess and improve its impermeability. Figure 9 Pore...
One system measures ground speed with a small Doppler radar unit for comparison with motor speed by use of electronic solid-state sensors. An aid in slip reduction is continuous welded rail (CWR), which gives a smoother, uninterrupted support to wheel treads. Trucks designed to maintain a more...
I, i+1, MPa; and Dkp indicates the reduction rate of core sample permeability per unit effective stress increase. The rate of permeability damage is calculated using the following formula: (1-9)Dk=(K1−Kmin)/K1×100%,where Dk is rate of permeability damage; K1 is core sample ...
Predicting the time rate of consolidation is one of the major aspects of structure design, founded on compressible fine-grained soil. The time to achieve t
To better capture the changes that occur during the extraction of CBM, the internal swelling coefficient of matrix (ISCM) has been gradually in permeability introduced into the permeability models, and such models have become an important type of the development of permeability models. The goal is...
When the ISO 717-1 reference curve has been shifted to the correct position, the weighted sound reduction index Rw can be read from the reference curve at 500 Hz. In America, Sound Transmission Class (STC) rating is generally used instead. The determination of STC is similar to the ...
Further reduction of the granule size to the diameter of 0.125–0.25 mm does not affect the adsorption kinetics [126]. Sign in to download hi-res image Fig. 18. Influence of granule sizes on kinetics for water vapor adsorption on aluminium oxide, reproduced from [125]. Chakraborty et al. ...
Thepressure reduction coefficientof PE gas pipeline is an important design parameter, and depends on the soil temperature around the buried pipeline. 聚乙烯燃气管道的压力折减系数是重要的设计参数,取决于管道埋设周边地温。 4) reducement factor of pore water pressure ...