Abstract:In order to study the characteristics of constant resistance unit anchor rock mass, the constant resistance unit with constant resistance characteristics is designed and produced for the uniaxial compression test of anchor rock mass. Using the hydraulic servo test system, different anchor forms (no anchor, ordinary anchor cable plus anchor rock mass, constant resistance unit plus anchor rock mass) are compared to study the strength, deformation and failure characteristics, acoustic emission signal characteristics and horizontal displacement parameters of the anchor rock mass. The stress-strain relationship and damage characteristics of rock specimens under different anchors are analyzed and analyzed. Results: The test results show that the uniaxial compressive strength of constant resistance unit is significantly higher than that of no anchor and ordinary anchor cable. Through the analysis of the test phenomenon, it can be seen that the constant resistance unit improves the rock strength, reduces the damage degree, controls the deformation and delays the rock instability damage after the peak, and plays an important role in the rock support. Based on this condition, the study of the mechanical characteristics of the anchor cable is of great significance, which provides theoretical reference for the anchor cable in the deep support design.