中文摘要：

通过锚固在硬岩和软岩中的岩锚抗拔试验以及注浆体与岩石胶结面的直剪试验，分别得到了注浆体与锚孔孔壁、注浆体与岩石胶结面的黏结强度参数。试验结果表明：在岩石的整体性和均质性较好的情况下，注浆体与岩石之间的黏结强度主要取决于黏结面的粗糙程度；硬岩强度高，抵抗钻头横向冲击的能力强，成型后的锚孔孔壁较为光滑；软岩强度低，抵抗钻头横向冲击的能力弱，成型后的锚孔孔壁较为粗糙，这增强了软岩岩锚的锚固段在注浆体与岩石黏结面上的承载能力，降低了该界面发生脱黏破坏的几率。鉴于锚孔孔壁粗糙度对岩锚承载强度影响较大，建议在以后的锚固工程设计以及预应力锚固规范的修订时对上述现象进行合理的考虑。

英文摘要：

Through the pullout test of rock bolt and direct shear test of cementation plane between grout and rock, the bond strength parameters between borehole wall and grout and that between grout and rock were obtained respectively. Test results show that the bond strength of cementation plane between grout and rock is dependent on the roughness of cementation plane when the integrity and homogeneity of rock are good. When the strength of hard rock is high, it has strong resistance ability to lateral impact of drilling bit, therefore, the borehole wall of shaped anchor bore is smooth. Contrarily, when the strength of soft rock is low, it has weak resistance ability to lateral impact of drilling bit, as a result, the borehole wall of shaped anchor bore is rough, which enhances ultimate load capacity of cementation plane between grout and rock in the interior embedment section of soft rock anchor cable, and decreases the probability of debonding failure of the interface. Because the influence of borehole wall roughness on the bearing capacity of rock anchor is very obvious, it should be taken into account reasonably in the design and revision of technical specification for prestressed anchors in the future.