At present,the equations used to estimate the general scour are mainly based on the following concepts at home and abroad:one is according to discharge per unit width and stopping velocity;and another is the law of equilibrium sediment transport.

Approach on washing flow speed of heat power pipe net;

This paper makes an analysis on harmfulness of the mixed and disorderly substances survived in heating pipe nets to operation of pipe nets, researches on the relationship of the normal operation flow speed and washing suspension speed, puts forward the view for determining the washing flow speed of pipe nets by adopting the normal operation speed in different pipeline.

Through industrial testing of tube panel of superheater, the flushing flow velocity was determined, with difficult problems of superheater claming of operating boiler solved.

The initial scour velocity of bed sand around submerged spur dikes is the basis for calculating the local scour depth around spur dikes,and the papers about computing the depth is rarely found up to now.