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CN-121976527-A - Anchor cable and inner anchor for rock slope treatment

CN121976527ACN 121976527 ACN121976527 ACN 121976527ACN-121976527-A

Abstract

The invention discloses an anchor rope for rock slope treatment and an inner anchor thereof, which relate to the technical field of geotechnical engineering, and comprise grouting anchoring anchor ropes and resin anchoring anchor ropes, wherein the grouting anchoring anchor ropes and the resin anchoring anchor ropes are internally provided with treatment devices, the treatment devices comprise injection units and locking support units, the injection units are arranged in the grouting anchoring anchor ropes, the locking support unit is installed in the resin anchoring anchor rope, and slip casting anchoring anchor rope and resin anchoring anchor rope interconnect, and the injection unit includes the injection pipe, and the injection pipe is equipped with eight groups, and eight injection pipes are all vertical to be installed in slip casting anchoring anchor rope bottom, and injection pipe one side all is connected with a slip casting core pipe. According to the invention, the anchor cable body in the injection unit is of a novel hollow structure and is provided with the grouting core pipe, the reverse grouting mode is adopted, so that the anchoring slurry is ensured to fill the drilled holes, and the special joint of the exhaust pipe and the grouting pipe is omitted, so that the construction steps are greatly simplified.

Inventors

  • CAI JINLONG
  • SUN RUIGANG
  • WANG YANFENG

Assignees

  • 皖西学院

Dates

Publication Date
20260505
Application Date
20231127

Claims (6)

  1. 1. The anchor rope for rock slope treatment comprises a grouting anchor rope (1) and a resin anchor rope (2), and is characterized in that treatment devices are arranged in the grouting anchor rope (1) and the resin anchor rope (2), the treatment devices comprise injection units, the injection units are arranged in the grouting anchor rope (1), locking support units are arranged in the resin anchor rope (2), and the grouting anchor rope (1) and the resin anchor rope (2) are connected with each other; The injection unit comprises injection pipes (301), eight groups of injection pipes (301) are arranged, eight injection pipes (301) are vertically arranged at the bottoms of grouting anchor ropes (1), the injection pipes (301) are hollow pipelines, one sides of the injection pipes (301) are connected with grouting core pipes (302), and the grouting core pipes (302) are connected with the injection pipes (301) by using screw thread locking mechanisms as grouting pipes.
  2. 2. The anchor cable for rock slope treatment according to claim 1, wherein the threaded locking mechanism comprises a locking threaded rod (303), a bearing (304) and a locking piece (305), the locking threaded rod (303) is vertically installed in the grouting anchoring anchor cable (1), the locking threaded rod (303) is connected with the grouting anchoring anchor cable (1) through the bearing (304), and the locking piece (305) is installed in the middle of the locking threaded rod (303).
  3. 3. The anchor cable for rock slope treatment according to claim 2, wherein the grouting anchoring anchor cable (1) is characterized in that the injection units are all positioned in the grouting anchor rods (306), the grouting anchor rods (306) are composed of trays (307), rigging and grout stopping plugs, and the rigging adopts high-strength spiral rib prestressed steel wires as raw materials.
  4. 4. The inner anchor of the anchor rope for rock slope treatment is characterized in that the treatment device further comprises a locking support unit, the locking support unit comprises a resin anchoring anchor rod (401), a polyester fiber net (402) is arranged outside the resin anchoring anchor rod (401), the mesh shape of the polyester fiber net (402) is arc-edge rectangle, the mesh size of the polyester fiber net is 15mm, a metal net (403) is arranged outside the polyester fiber net (402), the mesh size of the metal net (403) is 100 multiplied by 200mm, the two layers of polyester fiber nets (402) are paved in the form of a layer of metal net (403), the lap joint length of the lap joint net is 200mm, the polyester fiber net (402) and the metal net (403) used by the bottom wall are integral net, the lap joint length with the side wall is 500mm, the length of the lap joint net is 2500mm, the interval is 700 multiplied by 700mm, and the two bottom angle anchor rods and the horizontal angle are 45 degrees.
  5. 5. The inner anchor of the anchor cable for rock slope treatment according to claim 4, wherein the resin anchor rods (401) are 2500mm long, the interval distance is 800×800mm, the used resin anchor cable (2) is 6500mm long, the interval distance is 1600×2400mm, and the interval distance between the anchor rods used for the top plate and the side walls is 800×800mm.
  6. 6. The method for controlling the rock slope by using the inner anchor of the anchor cable is characterized in that the supporting unit is constructed by driving a resin anchor rod (401), paving a layer of metal net (403), paving a polyester fiber net (402), paving a layer of metal net (403), finally spraying concrete, welding the resin anchor rod (401) and the resin anchor cable (2) with the metal net (403), connecting the polyester fiber net (402) with the metal net (403) by binding wires, constructing the resin anchor rod (401) and the resin anchor cable (2) with certain length and distribution, forming a composite body by coacting with a rock mass, paving the polyester fiber net (402) and the metal net (403), finally spraying concrete, sealing the surrounding rock surface and resisting the surrounding rock pressure.

Description

Anchor cable and inner anchor for rock slope treatment Technical Field The invention relates to the technical field of geotechnical engineering, in particular to an anchor cable for treating a rock slope and an inner anchor thereof. Background At present, the type of the prestressed anchor cable commonly used in geotechnical engineering is a non-binding pressure dispersion type prestressed anchor cable, and compared with the first generation of binding type anchor cable, the steel strand 4 is sleeved with the PVC plastic rubber sleeve 5, so that the requirement of prestressed corrosion resistance can be well met. It has an important structural element, the inner anchor heads 6 and 7, which are mainly used to transmit the prestress in the anchor cable to the rock mass through the mortar mass in the anchor openings, as compared to the second generation of unbonded anchor cables. However, in the design of the inner anchor heads 6 and 7 of the existing unbonded pressure dispersion type prestressed anchor cable, a thicker flat plate is mainly used for prestress load transmission, and as the area of the load transmission flat plate is small, the prestress applied to the flat plate is large, the cement mortar poured under the flat plate can be crushed, and the reliability of the side slope reinforced by the prestressed anchor cable in the engineering operation stage is affected. Under the working condition of larger earthquake or rainfall, slope instability can occur, and important geological disasters such as slope collapse, slippage and the like are caused. The novel anchor cable for rock slope treatment and the inner anchor head thereof are disclosed in Chinese patent publication No. CN104612150B, and the long-term reliability of the anchor cable is improved. The inner anchor head has reasonable structure, can change the fracturing effect of the prestress load on the mortar body, more directly and effectively transfer the prestress load into the rock body, and more easily form a separate counter-force arch for guaranteeing the stability of the rock body in the rock body, thereby guaranteeing the stability of the anchored rock body in engineering construction and operation stages. The following problems exist in the prior art: The effect of anchoring and grouting reinforcement of the roadway surrounding rock in the stress concentration area with larger loosening range and loosening degree of the device is poor, and the reason is that the supporting effect of the anchor cable cannot be combined with the grouting reinforcement effect, and the reliability of anchoring of the anchor cable cannot be fundamentally ensured by grouting the organic or inorganic slurry through the grouting anchor cable. Disclosure of Invention The invention provides an anchor cable for rock slope treatment and an inner anchor thereof, which are used for solving the problems in the background technology. In order to solve the technical problems, the invention adopts the following technical scheme: the anchor rope for rock slope treatment comprises a grouting anchor rope and a resin anchor rope, wherein treatment devices are respectively arranged in the grouting anchor rope and the resin anchor rope, each treatment device comprises an injection unit, the injection units are arranged in the grouting anchor rope, and the grouting anchor rope and the resin anchor rope are connected with each other; The injection unit comprises injection pipes, eight groups of injection pipes are arranged, eight injection pipes are vertically arranged at the bottoms of grouting anchor cables, the injection pipes are hollow pipelines, one sides of the injection pipes are connected with grouting core pipes, and the grouting core pipes are connected with the injection pipes by using screw thread locking mechanisms as grouting pipes. The anchor cable body is of a novel hollow structure and is provided with a grouting core pipe, and a reverse grouting mode is adopted, so that the possibility of generating cavitation holes is eliminated, the anchoring slurry is ensured to be filled with drilling holes, a special joint (directly using a thread locking mechanism as a grouting pipe joint) for an exhaust pipe and a grouting pipe is omitted, and the grouting pipe, the exhaust pipe and the plugging grouting hole are not required to be bound on site, so that the construction steps are greatly simplified. The technical scheme of the invention is further improved in that the thread locking mechanism consists of a locking threaded rod, a bearing and a locking piece, wherein the locking threaded rod is vertically arranged in the grouting anchoring anchor cable, the locking threaded rod is connected with the grouting anchoring anchor cable through the bearing, and the locking piece is arranged in the middle of the locking threaded rod. The locking mechanism is reliable in operation, does not slip or generate sparks, has incomparable adaptability to underground humid and water sp