Anchor cable constant resistance device with fracture early warning function and mounting method

• Main Authors: WANG LEI, ZHU YU, JIANG YANJUN, WANG YINWEI, ZHANG MENGJIE, JIA HOUXING, JIANG WENYUAN, ZHI GUANGHUI, YU HUI, HE DEYIN, FU MENGXIONG, LIU SHAOWEI
• Format: Patent
• Language: Chinese; English
• Published: 24.03.2020
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS; SHAFTS; TUNNELS

The invention discloses an anchor cable constant resistance device with a fracture early warning function. The anchor cable constant resistance device comprises a cable body, an early warning device,a constant resistance deformation device and a prestress lock, wherein an anchor head is anchored to roadway (tunnel) surrounding rock through an anchoring agent; the constant resistance deformation device and the prestress lock are sequentially arranged at the tail end of the cable body in a sleeving manner; the constant resistance deformation device comprises an end cover, a polyhedron square pipe, a tray and a ribbed metal sleeve; the end cover is fixed to the upper end of the polyhedron square pipe; the lower end of the polyhedron square pipe is expanded into a round pipe; the tray and theribbed metal sleeve are arranged at the lower end of the polyhedron square pipe in a sleeving manner; the ribbed metal sleeve and the round pipe at the lower end of the polyhedron square pipe are fixed together; the tray appl