Abstract: Biot-Stoll model is used to predict the attenuation and transmission coefficients of sound in coarse sand, sandy clay and clay mud. A sound attenuation model for buried mines in different sediments and depths is established by studying the acoustic propagation characteristics of various sediments, and the effect of burial on buried mine is analyzed. The result shows that the different sediments，the buried depth and the operating frequency of fuze have different impacts on the functions of mine fuze. In the same depth and the frequency range of 10 Hz~5 kHz, the coarse sand has the greatest influence on the acoustic fuze, and the clay mud has the least influence on the acoustic fuze. The effect of burial on acoustic fuze is decreased with the increase in porosity and the decrease in average particle diameter.

Key words: ordnance science and technology, buried mine, Biot-Stoll model, acoustic attenuation, acoustic fuze