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清绿线Ｋ１７０段铁路地处极端干旱区，植物固沙难度大，铁路沙害的治理宜采用机械措施综合防治体系。２年的防护效益观测证实，用草方格沙障固沙，２０ｃｍ高度风速可比流沙区降低７６．３％，层内输沙率仅为流沙区的０．２８％；用砾石覆盖措施固沙，相应防护效果依次为１９．０９％和０．９１％；各防护措施下的风沙流特征值Ｑ６～２０／Ｑ０～６，都达到了＞１的有效防护指标。
Qinghai-Tibet Railway K170 section of the railway is located in an arid region, plant sand fixation is difficult, the management of railway sand should adopt mechanical measures integrated prevention and control system. Two years of protective benefit observation confirmed that grass sand barrier fixation sand, 20cm height wind speed than the quicksand area decreased 76.3%, the bed sediment transport rate of only 0.28% of the area; gravel covering sand, the corresponding The protective effect is 19.09% and 0.91% respectively. The characteristic values of wind-blown flow under each protective measure are Q6 ~ 20 / Q0 ~ 6, which all reach the effective protection index of> 1.