（1）过早的削坡而边坡防护工程未能及时跟上。
（2）未设临时急流槽和拦水埂。
（3）每次雨水冲刷后未及时修补路基。
（4）边坡未植草防护。
2、防治措施
（1）削坡后边坡防护工程应及时跟上。
（2）应设临时急流槽、拦水埂和排水沟。
（3）应及时修补冲刷沟。
（4）大雨过后应及时组织人员上路排除积水。
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