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强夯法是一种十分有效的处理土石混填路基的方法,但传统的方法对这种路基质量的检测具有一定的局限性。基于Rayleigh波法的基本理论,采用北京水电物探研究所研制的SWS-2型多功能面波仪,结合工程实例对某二级公路的路基进行了检测。检测结果显示:强夯法可以很好的处理乡村公路的土石混填路基;在强夯过程前后,公路路基介质的Rayleigh波波速变化较大,夯击后的波速要明显大于夯击前,表明公路路基质量有较大的提高;Rayleigh波法是一种高效率的路基质量无损检测方法,可以较为方便的检测乡村公路路基的质量,适用性广,具有较大的工程应用价值。
Dynamic compaction method is a very effective method to deal with the mixed soil-rockfill roadbed, but the traditional method has certain limitations on the detection of such subgrade quality. Based on the basic theory of Rayleigh wave method, the SWS-2 multi-function surface wave instrument developed by Beijing Hydropower Geophysical Prospecting Institute was used to test the roadbed of a Grade II highway with engineering examples. The test results show that the dynamic compaction method can deal well with the soil-rock mixed embankment of rural roads. Before and after the dynamic compaction process, the Rayleigh wave velocity of the highway subgrade medium changes greatly, and the wave velocity after tamping is obviously larger than that before tamping The quality of highway subgrade is greatly improved. Rayleigh wave method is a high efficiency nondestructive testing method of subgrade quality, which can be used to detect the quality of subgrade of rural highway more conveniently. It has wide application value.