【摘要】 基于地震反射法的陆地声呐法,在预报探查溶洞等方面成功地进行了2个工区的工作,取得了很好的效果,这是由于其接近于零震-检距的工作布置,用锤击激震可接收10~4 000 Hz的超宽频带的接收等特点所决定。无论在地面上探查中、小溶洞方面(查找的溶洞径深比可小于1∶15),还是在隧道施工地质预报方面都有很大优势。更多还原

【Abstract】 Landsonar,which is based on the principle of elastic reflection wave,is a method for geological forecasting in tunnel construction.In more than 20 objects the Landsonar was successfully used to explore karst caves,which demonstrates the peculiarity of landsonar resulting from nearly zero source-detector distance and very wide receiving frequency band of 10 Hz to 4000 Hz.Landsonar shows great superiority not only in exploring karst caves on the earth’s surface but also in geological forecasting during tunnel construction.更多还原