钻孔弹模技术可以快速测得深部岩体的力学参数(变形模量及弹性模量)，也可用来检测工程岩体灌浆加固的效果，无疑具有不可替代的优势。阐述了钻孔弹模仪结构、测试方法及其在三峡工程中的应用结果，实践表明了该设备在岩体自身的力学特性测试、岩体开挖卸荷带划分、和岩体灌浆质量检测等方面的有效性。

The technique of borehole elasticity modulus method permits to fastly measure the deep rock mass’s mechanical parameters (deformation modulus and elasticity modulus) and to inspect the consolidation effect of rock grouting, so it has irreplaceable advantages. In this paper the borehole elasticity modulus instrument’s structure and measuring principle are presented together with the application results obtained from the the Three Gorges Project. It reveals the efficiency of the technique on the tests of rock mass proper mechanical characteristics, zonation of excabvation unloading and detection of grouting quality.