淮南煤田含煤地层岩石物性参数研究

根据岩心实验测试数据和测井资料，利用交会图技术和统计分析方法，对淮南煤田含煤地层中砂岩、泥岩和煤岩的密度，纵、横波速度等物性参数进行了系统研究。研究表明：各类岩石的密度以及纵、横波速度等物性参数变化范围都较大；埋藏深度对岩石物性参数的变化和各类岩石之间的物性参数差异有明显影响；岩石的物性参数之间具有很好的相关性，但碎屑岩与煤相应物性参数关系式的系数有很大差别；与岩石实验测试数据相比，测井分析数据更接近于地层状态下岩石的物性参数，而且分布范围较大，回归分析结果更具实用性。

Study on the rock physic parameters of coal bearing strata in Huainan coalfield

Coal bearing strata mainly consist of sandstone, mudstone and coal in Huainan coalfield.With those data from logging and rock experiments in lab, the characteristics of the rock physic parameters including density, longitudinal wave velocity v_p and transversal wave velocity v_s are studied.Those parameters of each kind of rock varied in a wide range.With increase of depth, both rock parameters and their difference among rocks also increase.Those physic parameters of rocks show close relationship, while coefficients of regression equations for clastic rocks and coal are different.Rock physic parameters from logging data are more accurate for underground statuation than that from rock experiments in lab, and varied in wider ranges, so regression equations from logging data are more applicable.