Yielding type restrained concrete arc frame high-strength three-dimensional supporting and protecting system

2012 
The utility model discloses a yielding type restrained concrete arc frame high-strength three-dimensional supporting and protecting system which comprises a restrained concrete arc frame, yielding points, anchor rods or anchor ropes, wherein the restrained concrete arc frame is a closed type structure, the shape of the restrained concrete arc frame is coincident with the shape of a roadway and formed by the combination of restrain concrete and the yielding points through sleeves, and the restrain concrete and the yielding points through sleeves are arranged at intervals and connected with each other through longitudinal beams. The anchor rods or the anchor ropes penetrate through the longitudinal beams, are anchored in a rock stratum, exert prestress, and havea squeezing action on surrounding rock. The restrained concrete arc frame and the anchor rods or the anchor ropes form an integrated structure through the longitudinal beams and act together to form the spatial three-dimensional supporting and protecting system. The yielding type restrained concrete arc frame high-strength three-dimensional supporting and protecting system is applicable to support and protection of underground construction, such as deep soft rock underground caves and tunnels. The yielding type restrained concrete arc frame high-strength three-dimensional supporting and protecting system has the advantages of being high in supporting and protecting intensity, good in stability, reasonable in stress and the like. The yielding type restrained concrete arc frame high-strength three-dimensional supporting and protecting system further has a yielding function and can effectively control stability of the surrounding rock of the caves and the tunnels.
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