Rock-fill dam compaction quality control method based on soil body resonance frequency

The invention discloses a rock-fill dam compaction quality control method based on soil body resonance frequency. The method comprises the following steps of receiving a soil body resonance signal byan acceleration sensor, wherein the soil body resonance signal is generated when a reflected P wave is propagated back to a vibration wheel; filtering the received soil body resonance signal; performing fast Fourier transform on a filtered frequency range to obtain a frequency spectrogram of an acceleration time-range signal, wherein the fundamental frequency of the frequency spectrogram is the soil body resonance frequency fp; calculating the reflected P wave velocity Vp by using a formula Vp=4H.fp; and establishing a regression relationship f(Vp)-rhod between the obtained soil body resonancefrequency fp and the reflected P wave velocity Vp and the soil body dry density rhod obtained through test pit detection after on-site rolling, according to the dry density rhodc required by each soil body to reach a compacti