三峡工程岩锚加固技术现场试验论证

Field test of rock anchoring technique for TGP

为了给三峡工程大规模的岩锚施工积累经验，在三峡永久船闸的南坡，对非预应力锚杆、预应力锚杆、有粘结与无粘结预应力锚索进行了现场试验。论证了锚杆材料和预应力锚索的设计参数；探索出了适应快速施工要求的早强浆材配比；证明了无粘结预应力锚索在三峡边坡加固支护中使用是可行的。岩锚试验的成果对其它类似工程的施工具有普遍的指导意义。

In order to accumulate experience in construction of large scale rock bolting for Three Gorges Project,tests of non prestressed and prestressed anchor bolts,adhesive and non adhesive prestressed anchor cables have been conducted in situ on the south excavated slope of TGP permanent shiplocks.Design parameters for anchor bolts′ materials and prestressed anchor cables are verified.Mix ratio of early strength grouting materials suitable for rapid construction has been found.Non adhesive prestressed anchor cables are proved to be feasible for strengthening and supporting excavated rock slopes of TGP.The results from the tests of rock bolting are useful for construction of other similar projects.