| 摘要 |
Arch closed yielding support. Arch is closed with ledger. Each of compensators of impact and static loads behind support has wedge as three-edged prism acute rib of which is directed to the side of rock massif, and hollow wedge as rod upper sharpened end of which goes through opening in the top of the prism and the lower spherical, or in another shape, end interacts with flat upper end of continuous rod placed in same rod made of low-module material and the lower flat end of continuous rod interacts with the bottom of the segment. Guide pipe is fixed at the bottom of the prism. |
