RESEARCH ON ROCK P-WAVE VELOCITY OF DALIUSHU DAM SITE

Sufficient datum have been collected after quantities of substant exploration on Daliushu dam site on Yellow River.Analysis about forty cave wall rock P-wave velocity shows that rock P-wave velocity on Daliushu dam site has the following two characteristics:first,large-scale low wave speed; second,alternative distribution of low and high P-wave velocity sects.Rock P-wave velocity as a key mark of rock quality can reflect the state of rock body quality in the dam site area.