This paper mainly analyzed reason for formation of subsidence on a part of highway foundation in the middle of Shaanxi province,and discussed integrated reinforcement construction technique,including quicklime pile,CGMT,and grouting reinforcement. At present time of transportation,this construction technique ensured high quality of foundation,improved the construction progress and saved the cost. Thus,this is an effective method of construction technique.%分析了陕西关中地区某高速公路路基局部产生沉陷裂缝的原因，论述了采用生石灰桩、干拌水泥碎石桩以及注浆加固的路基综合加固施工技术，从目前通车情况来看，该施工技术既确保了路基的施工质量，又提高了工程的进度，节省了施工成本，是一种行之有效的路基加固施工技术方法。
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