本文介绍了应用声波检测残采煤层厚度的优越性，对残采煤层厚度检测仪换能器的设计和应用进行了研究，选择了最佳方案。关键词： 煤层厚度声波 无损检测换能器Abstract： this paper has been introduced the imcomplete superiority that layer thickness is mined coal of the checkout of application sound wave , and has gone on research , and has selected the best scheme to design and the application of imcomplete mining coal a layer thickness checkout apparatus transducer .keyword：Thickness in coal bed sound wave cannot harm checkout transducer