普雄地区基于岩石测试的灰岩纵、横波关系式分析

The relationship between P wave and S wave velocities of Puxiong limestone based on rock tests

选取云南普雄地区具有代表性的灰岩样品进行室内岩石物理超声测试实验,得到样品的纵、横波速度及密度等参数。对测试结果分析发现,Castagna关系式和Pickett灰岩关系式不能正确反映该区的纵、横波关系。利用数理统计方法对研究区灰岩实验室测试的纵、横波速度进行回归分析,得到了该区更为准确的纵、横波关系数学模型,具有重要的实际运用价值和理论价值。

A representative sample of limestone are selected for indoor rock physics test in Puxiong area of Yunnan.Some parameters(P wave velocity,S wave velocity,density,etc.)are obtained.The results show that the Castagna relationship and Pickett limestone relationship could not correctly reflect the relationship between the P wave velocity and S wave velocity in this area.Therefore,the regression analysis of P wave and S wave velocity obtained in laboratory are done by mathematical statistics method.The more precise mathematical model of the P wave and S wave velocity relationship has been obtained,which has important practical value and theoretical value.