The synthetic application of plastic drain boards to soft-soil foundation is introduced in detail aiming at the design of soft-soil foundation between pile numbers from K47+100 to K48+100 of Harbin western circular highway.
Reformation of Model of Teaching in Practice and Cultivation of Comprehensive Abilities of the Students──Experiences from Examination on Practice Quality of the Students of Water Supply and Drain Speciality
The technical process of using SBR technology to dispose Shenyang' s sewage in the way of removing biololgically nitrogen and phosphors is as follows: Taking in water 0.05 h, stirring 0.95 h, aeration 3.5 h, precipitation 1 h, draining away water 0.05 h, waiting for the next operation 0.45 h;
The aim of this article was to study the influence of immunity function of advanced malignant obstructive jaundice (MOJ) treated by percutaneous transhepatic biliary external and internal drainage.
Ninety-six cases of MOJ were divided into two groups according to the different ways of biliary drainage.
Fifty-two external drainage tubes were placed in 41 cases of percutaneous transhepatic biliary external drainage group and 66 metal stents were placed in 55 cases of percutaneous transhepatic biliary internal drainage group.
There was no difference in external drainage group (P>amp;gt;0.05).
Percutaneous transhepatic biliary internal or external drainage was an effective and important method to treat MOJ.
Groundwater inflow to annular imperfect horizontal drain
It is assumed that the drains are completely full of water; the pressure head in the soil along the line of contact with the drain is equal to the elevation of its upper point, at which there is no excess pressure.
In this paper, a hydrodynamic model is used to estimate the raising of the ground-water level due to seepage from a channel, its lowering by a drain, and the seepage pressure force on the foundation near a reservoir.
The main features of the unsteady outflow of a fluid from a cylindrical vessel rotating together with it at a constant angular velocity through a central drain hole in the bottom are studied.
The converter is designed on the basis of a field-effect transistor with a balanced thermistor bridge connected to the drain circuit.
The problem of optimizing the mass-transfer parameters in the water drainage system is also analyzed.
Optimum combination of water drainage, water supply and eco-environment protection in coal-accumulated basin of North China
The conflict among water drainage, water supply and eco-environment protection is getting more and more serious due to the irrational drainage and exploitation of ground water resources in coal-accumulated basins of North China.
Surface collapse causes an increase in mine water drainage and the possibility of major water inflow from karst aquifers, which threatens the environment in mining areas and endangers mine safety.
The numerical analysis results indicate that the optimal model for determining the best extraction plan is the solution for the contradiction between water supply and water drainage.