摘要
本文论述了不同煤体结构类型的声速特征和孔测超声波仪预测煤体结构的理论基础，并据此进行了孔测探头设计，达到了预测工作面前方煤体结构的目的。
This paper described the sonic sharacteritics of different coal structures and the thoretical fundmentals of ultrasonic prediction of coal structures,desinged the ultra-souic senser used in bore hole.The working face coal structure can be predicted by borehole ultra-sonic de-tection
关键词
煤体结构
超声波
孔测
超声波仪
煤
coal structure
ultra-sonic wave
Borehole detection Preiction
