Anchor cylinder structure based on large-deformation tunnel circumferential pressure relief pilot tunnel

The anchor cylinder structure based on the large-deformation tunnel circumferential pressure relief pilot tunnel comprises a guide tip and a supporting cylinder, the supporting cylinder comprises a middle cylinder part and end steel parts located at the two ends of the middle cylinder part, the guide tip is connected with one of the end steel parts, and the anchor cylinder structure is guided by the guide tip to be inserted into the circumferential pressure relief pilot tunnel. And the middle cylinder part supports the circumferential pressure relief pilot tunnel. The pressure relief valve hasthe advantages of being simple and ingenious in structure, capable of reducing the deformation rate, capable of improving stability and capable of guaranteeing the pressure relief function. 本实用新型的基于大变形隧道环向释压导洞的锚筒结构，包括导向顶尖和支撑筒，支撑筒包括中间筒部和位于中间筒部两端的端钢部，导向顶尖与其中的一个端钢部连接，锚筒结构由导向顶尖进行导向插入环向释压导洞内，中间筒部对环向释压导洞形成支撑。该实用新型具有结构简单巧妙、能减小变形速率、可提高稳定性、能保证释压功能的优点。