岩体灌浆后单孔耗灰量与声速提高率异常关系的探讨

在工程岩体灌浆声波检测中 ,往往会出现“单孔耗灰量小 ,声速提高率较大 ;单孔耗灰量大 ,声速提高率较小”的异常关系。运用地质知识、结合声波检测原理对相应异常关系进行初步探讨 ,其结果表明 :导致这种关系的主要因素是地质构造形态、灌浆方法及工艺、检测方法的局限性。探讨结果对改善灌浆方法及工艺、实施灌浆检测和客观评价灌浆效果均具有一定的指导意义

Probe into the abnormal relation between the single opening cement consumption and the velocity increase rate after rock grouting

In the acoustic wave testing of constructional rock mass grouting.It often presents some abnormal relation between the mortar consumption in hole and the raise ratio of acoustic velocity.That means the mortar consumption in hole is larger and the raise ratio of acoustic velocity is smaller,the mortar consumption in hole is smaller and the raise ratio of acoustic velocity is larger.Using the geological knowledge and the theory of acoustic wave testing to discuss the abnormal relations.The result indicates that the main reason causing the relations are the form of geological structrue,the method and technology of grouting and the limitations of testing method.The discussing results can play a guiding role in improving the method and technology of grouting,carrying out grouting testing and appreciating grouting effect.