Abstract
A new technique of long-distance pipeline transportation of soft clay, which is related to Non Newton--Bingham pipe flow studies. Propose a method of non-continuous pneumatic conveying method with surface film lubrication, which will obviously reduce the friction between pipe wall and mud column and the Viscous resistance of clay. The air is injected to form air-column between mud columns. Adjust the lengths of mud column and air column and their proportion, and make the pushing force bigger than or near equivalent to the resistant force, until the optimum air-mud ratio for the required delivery distance is achieved. Long distance transportation of soft clay through low pressure pipeline is achieved. The method, with the features of energy-saving, high efficiency, profitable, can be applied in fields of water conservancy, petroleum, chemical, mining, and environmental protection, etc.
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