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采用记录沙砾冲撞铁管声音的方法 ,并通过流量观测进行率定 ,可以观测到河流流沙的变化情况。介绍日本在常愿寺河津之浦采用水听器观测流沙变化的试验
Adopting the method of recording the sound of gravel colliding with the iron pipe and carrying out rate calibration through the flow observation, the variation of the quicksand of the river can be observed. This paper introduces the experiment of using hydrophone to observe the change of sediment in Japan at Kawazu-no-ri in Changan-pagoda