关键词: 风沙害, 防沙工程, 输沙率, 风沙运动, 塔克拉玛干沙漠

Abstract: On basis of long design practices, we realized that the blown sand disasters along highways were overestimated by many researchers during designs on sand-control engineering due to influences of many factors.To avoid this confusion the principal acknowledge is that there may not be serious sand disasters when the sands are blown towards the highways;the second is that there are significant differences on wind activities and sand disasters in dune and sand-sheet areas;the last is that the sand capacity of the engineering is far higher than that we previously estimated.Through discussions on relations of sand disaster grades and transport rates, shield and conduction efficiencies of fences, disequilibrium of sand deposits within the sand-fixed belts, sand transport functions of highways, and evaluating standards of sand controls, a approach on overestimating of blown sand disasters was expressed in this paper.

Key words: blown sand disaster, blown sand-control engineering, sand transport rate, wind activity, Taklimakan Desert