介绍了陆地声纳法（陆上极小偏移距高频弹性波反射连续剖面法）的基本原理和方法，通过对某高速公路基岩地震波探测剖面的实例分析，表明该方法与常规物探方法相比，可避免许多干扰波，可单道连续采集，并具有分辨率高、偏移距极小、反射波能量高等特点。在地下岩溶等浅层地震地质调查中效果良好，可满足狭窄、复杂环境下的高分辨率浅层地震勘探的需要。

Basic principles and measuring techniques of land son ar method, i.e., the land minimum offset distance high-frequ ency elastic wave -reflection continuous profile method, are presented, and an application exampl e of karst detection for a highway foundation is given. Compared with ordinary d etection method, the method has many merits such as high resolution ratio, avoid ing lots of disturbed waves, continuous collection for single trace, high energy of reflection waves and minimum offset distance. And it can receive good effect for shallow*.layer seismic wave exploration and can be used in narrow area and complicated environment.