Anchor cable for sectional grouting of controllable secondary vacuum grouting pipe

The utility model discloses a controllable anchor cable for segmented grouting of a secondary vacuum grouting pipe. The controllable anchor cable comprises an outer anchoring end, an anchor cable free section and an anchor cable anchoring section. The anchor cable anchoring section comprises a bonded prestress steel strand, a primary grouting pipe, a secondary grouting pipe, a secondary grouting sleeve, a wiring ring and an isolation support. The bonded prestress steel strand, the primary grouting pipe and the secondary grouting sleeve are fixedly connected with the wiring ring. The secondary grouting sleeve is provided with annular openings at intervals in the range of the anchoring section of the anchor cable; the secondary grouting pipe is tightly attached to the secondary grouting sleeve in an embedded mode, and an annular hole identical to the annular opening is formed in the end of the secondary grouting pipe. According to the controllable anchor cable for segmented grouting of the secondary vacuum grou