Tertiary cooperative compression yielding and energy-absorbing support mechanism

A tertiary cooperative compression yielding and energy-absorbing support mechanism, comprising:

• compression yielding and energy-absorbing anchor cables, a primary support compression yielding arch frame and a secondary lining steel arch frame, wherein a plurality of the compression yielding and energy-absorbing anchor cables are located at a peripheral of the primary support compression yielding arch frame, and the primary support compression yielding arch frame is located at the peripheral of the secondary lining steel arch frame;
• and
• the compression yielding and energy-absorbing anchor cables are supported in a surrounding rock of the peripheral of the primary support compression yielding arch frame;
• and
• the primary support compression yielding arch frame is composed of a plurality of section steel units and a plurality of circumferential compression yielding devices, wherein the circumferential compression yielding devices are fixed between two adjacent section steel units, and the circumferential compression yielding devices comprise a circumferential outer frame and a circumferential inner frame, one end of the circumferential inner frame is extended into the circumferential outer frame, and the circumferential inner frame is guided to move along the circumferential outer frame;
• one of the circumferential outer frame and the circumferential inner frame is provided with a circumferential constant-resistance sleeve, the other of the circumferential outer frame and the circumferential inner frame is provided with a circumferential anchor cable, and one end of the circumferential anchor cable is penetrated into the circumferential constant-resistance sleeve, and the circumferential anchor cable being penetrated into the circumferential constant-resistance sleeve is provided with a constant-resistance slide mass, which is guided to slide with a constant resistance in the circumferential constant-resistance sleeve;
• and
• a plurality of radial compression yielding devices are provided between the primary support compression yielding arch frame and the secondary lining steel arch frame, and the radial compression yielding devices comprise an upper baffle plate and a lower baffle plate, one of the upper baffle plate and the lower baffle plate is provided for attaching to the primary support compression yielding arch frame, and the other of the upper baffle plate and the lower baffle plate is provided for attaching to the secondary lining steel arch frame;
• a radial outer frame and a radial inner frame are provided between the upper baffle plate and the lower baffle plate, one end of the radial inner frame is extended into the radial outer frame, and the radial inner frame is guided to move along the radial outer frame;
• one of the radial outer frame and the radial inner frame is provided with a radial inner sleeve, and the other of the radial outer frame and the radial inner frame is provided with a radial inner anchor cable, and one end of the radial inner anchor cable is penetrated into the radial inner sleeve, and the radial inner anchor cable being penetrated into the radial inner sleeve is provided with a slide mass, which is guided to slide with the constant resistance in the radial inner sleeve.