Mechanism and Characteristics of Soft Soil Consolidation by Low Position Vacuum Preloading: Mechanism of Reinforcing Soft Soil The conventional vacuum preloading method is one of the methods of preloaded consolidation with consolidation. First, according to the nature of soil and design requirements, a certain specification of sand or plastic drainage belts shall be installed in the soft soil that needs to be reinforced, sand cushions shall be laid on the ground, and vertical and horizontal suction pipes shall be embedded therein. Then cover it with a plastic film to make it isolated from the atmosphere. The air and groundwater in the soil and membrane are pumped out with a vacuum pump and a pumping device, creating a pressure difference inside and outside the membrane, increasing the effective stress of the soil. Soft soil drainage consolidation with the increase of effective stress. The low vacuum preloading method uses artificially blown mud to replace the plastic film sealing layer. When evacuating, the horizontal vacuum pipe network installed in the lower part of the blow-seal layer will consolidate and drain the soft soil on and under the fill soil layer. The effective stress increases near the soft-segment in the sand or plastic drain plate area. The effective stress in the upper dredging zone is composed of two parts: one is the triangular I zone created by the vacuum load, and the other is the natural evaporation suction effect. 1. The total stress line; 2. The original water pressure line; 3. The reduced water pressure line; 4. Do not consider the water pressure line in the well head loss; 5. The self-gravity stress line to fill the soil; 6. Low Vacuum increased effective stress lines; 7. Effective evaporation lines with increased natural evaporation attractive force; u: Increased effective precompressive stress generated approximately triangular II zones. Because the blowdown soil layer has the dual functions of sealing and self-consolidation, in order to ensure the sealing performance and reinforcement effect of the foundation soil, the soil and thickness of the blowback soil layer should be selected so that the solidification slightly lags behind the consolidation of the soft foundation.
Counter Flow Closed Cooling Tower
Let's look at the comparison of electric energy, electric energy is not different, because they are all through the same power equipment to operate the equipment, the power of the two is similar, the running time is the same, basically the energy consumption is about the same.
To sum up, for the Closed Cooling Tower energy saving accounting can be strong to open the tower out, and, today are advocating energy conservation and environmental protection, this is the general trend, so the closed cooling tower is more and more favored by the majority of users.
Counter Flow Closed Cooling Tower,Closed Type Cooling Tower,Cooling Tower Closed Loop System,Closed Circuit Cooling Tower
Wuxi Ark Fluid Science Technology Co., Ltd. , https://www.fangzhouarkfluid.com