Prestressed anchor cable steel strand is put into strata within the prestressing construction technology, relay is the main supporting stress to deep stable layer of active supporting way.

Cable installation after locking, anchor stress concentration to 45 degree pressure line passed to the supporting structure, the prestressed anchor role, the surrounding rock of surrounding rock in compression, but cable elastic compression formed under" bearing arch", progress in surrounding rock of integrity and inner resistance, increase its strength, increase the rock stability strength. Cable supporting structure and surrounding rock can be chained together together, can cause the rock to play a greater role in favor of surface load, structural stability, and the structure and the working medium composed of complex rock structure, by anchoring rock can effectively withstand load generated tension and shear, and these the force transmission depth than without anchorage effect more.

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