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高压下碳化钨压砧走时的测量

DOI: 10.11858/gywlxb.2000.03.003, PP. 171-175

Keywords: 高压,走时,碳化钨压砧,弹性波速

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Abstract:

在常温、实验压力为0~3GPa条件下,利用脉冲反射法测量了纵波在碳化钨压钻中的走时,结果发现,随实验压力升高,碳化钨压砧的走时线性减少。碳化钨压砧被压缩是引起碳化钨压砧的走时减少的主要原因。实验压力(p/GPa)与碳化钨压砧走时减少量(Δt/μs)之间的关系为:Δt=(0.02233±0.00081)p。运用这个关系式可以对所测量的岩石弹性波速度进行校正,以获得更为精确的岩石弹性波速度。

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