安益贫铁矿矿区钻孔波速试验研究

Experimental study on borehole wave velocity in an area with poor iron ore

结合野外地质调查和钻孔岩心资料,在安益贫铁矿矿区选取5个钻孔,采用单孔波速法对各钻孔不同层位岩石进行波速试验;通过采集的纵波和横波试验数据计算各种类型岩石的动泊松比以及动弹性模量。得出如下结论 :粉砂质、钙质泥岩波速值小,底砾岩波速值较小,绢云绿泥千枚岩波速值中等,钛磁铁二长闪辉岩、含二长钛磁铁单辉岩、闪辉二长岩、显微闪长岩波速值较大,绢云板岩及石英岩波速值大。

Based on field geological survey and borehole data, select 5 boreholes in Allex iron ore mine, the borehole wave velocity test in different layers of rock with single hole wave velocity method; through the test data of P-wave and S-wave acquisition of various types of rock to calculate the dynamic Poisson ratio and dynamic modulus of elasticity. Conclusion： siltstone, calcareous mudstone velocity, bottom conglomerate velocity is small, sericite chlorite phyllite velocity medium, titanium magnetite two long Shan Huiyan, Dan Huiyan, with two long titanium magnetite flare two diorite, diorite micro wave velocity is large, sericite slate and quartzite velocity value.