CN201358467Y - Protection system for geotechnical protection engineering - Google Patents

Abstract

The utility model discloses a protection system for geotechnical protection engineering, comprising: a flexible net and a grid, the flexible net is fixed on the grid, and the grid is also provided with a An anchor on the rock-soil mass is stabilized; the flexible net, the anchor and the sash are all made of ductile materials with certain strength. Because the whole system of the utility model adopts a protection system composed of flexible nets, grids and anchors made of tough materials with certain strength, the weight is greatly reduced, the strength is significantly improved, and the labor intensity and difficulty of construction are also greatly reduced, and the utility model is greatly improved. The magnitude improves the efficacy, making the protection system of the utility model more economical and adaptable.

Description

A protection system for geotechnical protection engineering

technical field

The utility model relates to a protection system for rock-soil protection engineering, which is mainly used in reinforcement and protection of various rock-soil slopes, slope rockfall, avalanche, mud-rock flow, and surrounding rock protection of tunnel underground caverns.

Background technique

The traditional geotechnical protection mostly uses steel wire mesh to strengthen and protect the geotechnical slope. However, due to the heavy weight of this structure, the construction is difficult, the efficacy is low, and the cost is high. In addition, the anti-corrosion performance of steel wire mesh is poor, and the service life is short. It can only be used for some temporary protection, but cannot be used for permanent protection projects.

Utility model content

The technical problem to be solved by the utility model is to provide a protection system for geotechnical protection engineering that can greatly reduce construction difficulty.

In order to solve the above problems, the utility model provides a protection system for geotechnical protection engineering, including: a flexible net and a sash, the flexible net is fixed on the sash, and a There are anchors for fixing to a stable mass of rock and soil; the flexible mesh, anchors and sash are all made of ductile material with a certain strength.

Preferably, the tough material is ultra-high molecular weight polyethylene.

Preferably, the anchor is an anchor rod or an anchor cable.

Preferably, the shape of the flexible net is: rhombus, square, rectangle or circle.

Preferably, the flexible net is one layer or more than one layer.

Preferably, the sash is formed by criss-crossing ropes, columns, beams or belts.

Preferably, the cross-sectional shape of the column or beam is circular, square, rectangular, U-shaped, I-shaped or sheet-shaped.

The utility model has the following advantages:

1. Since the whole system adopts a protective system composed of flexible mesh, frame and anchors made of tough material with certain strength (preferably ultra-high molecular weight polyethylene material), the weight is greatly reduced and the strength is significantly improved, which makes the construction labor The strength and difficulty are also greatly reduced, and the efficacy is greatly improved, making the protection system of the utility model more economical and adaptable;

2. Each component of the system adopts a reliable, high-strength and high-toughness connection method, thereby improving the connection strength of each component, making the entire protection system a whole, greatly improving the overall protection strength of the protection system, as well as the crash resistance and durability of the protection system sex and reliability.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is the structural representation that the utility model is fixed on the stable rock and soil mass;

Fig. 3 is the schematic diagram of connection with the sash when the anchor piece adopts the anchor rod;

Fig. 4 is the schematic diagram of the connection structure of the anchor cable and the sash;

Fig. 5 is a schematic diagram of the structure of the anchor member connected to the sash by knotting when the anchor is an anchor cable.

Detailed ways

As shown in Figures 1 and 2, the utility model includes: a flexible net 1 and a sash 2, the flexible net 1 is fixedly arranged on the sash 2, and the sash 2 is also provided with a hook for fixing to a stable rock and soil mass 6 The anchor piece 3; the flexible mesh 1, the anchor piece 3 and the grid 2 are all made of ductile material with certain strength. In the utility model, the tough material is an ultra-high molecular weight polyethylene material with a molecular weight greater than 1 million. Using this polyethylene material, its tensile strength is 30-40g/d, which is 8-17 times that of steel with the same cross-section, while its weight is only 1/8 of steel with the same cross-section, its density is 0.97g/cm3, and its modulus is 1000～1300g/d, the elongation is less than 3%, it has excellent weather resistance and corrosion resistance, super anti-aging ability, and the service life exceeds 100 years. Because the flexible net 1, the anchor 3 and the grid 2 are all made of ultra-high molecular weight polyethylene material, the protection system of the utility model is light in weight and less difficult to construct, high in efficacy and low in cost, and can be used for long-term and permanent projects , such as the protection of super-large falling rocks, the protection of dangerous rocks on high slopes, etc.

Below, the utility model is described in further detail in conjunction with the accompanying drawings.

As shown in Figures 1-3, the above-mentioned anchor 3 adopts an anchor rod structure, and the sash 2 is a rope or belt structure. The anchor rod is made of ultra-high molecular polyethylene material and threaded anchor rods of various specifications. The anchor hole matching the anchor rod is drilled on the rock and soil body 6 through the rock bolt drilling rig. After the hole is formed, the anchor rod is inserted into the anchor hole. The anchoring agent is used to tightly combine the anchor rod with the rock-soil mass 6 and bond firmly, so that the stress of the anchor rod is transmitted to the stable rock mass 6 . As shown in Figures 1-3, the anchor rod is connected to the sash 2 through the anchor backing plate 4 and the nut 5, and the sash 2 passes through the preset hole of the anchor backing plate 4 and is connected to the anchor bar as a whole. When the sash 2 adopts the structure of beams and columns, the anchor rod is passed through the preset hole at the cross point of the sash 2, and then the anchor plate 4 and the nut 5 are tightened to press the sash 2 on the anchor plate 4 Below, the sash 2 is connected with the anchor rod to form a whole in this way.

As shown in Figure 4, when the anchor member 3 adopts the anchor cable structure, the anchor member 3 is made of ultra-high molecular polyethylene fibers, and the anchor cable can be single bundle or multiple bundles, which are drilled on the rock and soil mass 6 by a bolter drilling rig. Make the anchor hole matching the anchor rod, insert the anchor cable into the anchor hole after the hole is formed, stabilize the anchor cable through the support frame, and use the anchoring agent to tightly bond the anchor cable with the rock and soil body, so that the anchor rod will be stressed into a stable rock mass. The anchor cable is tensioned and prestressed through the anchorage and the anchor plate 4, and the anchor cable is connected with the sash 2 which is a rope and a belt structure through a fastener to form a whole. When the sash adopts the beam and column structure, the anchor cable is passed through the preset hole at the cross point of the beam and column, and then the anchor cable is tensioned and prestressed with the anchor plate 4 and the anchorage, and the column, beam Press under the anchor plate 4, in this way the sash 2 is connected with the anchor cable as a whole.

As shown in Figure 5, the anchor cable can also be extended and grown directly into the anchor cable by knotting the sash 2 with the rope and belt structure, inserting it into the anchor hole, and then using the anchoring agent to connect the anchor cable to the rock. The soil is closely bonded and firmly bonded, so that the force of the anchor cable is transmitted to the stable rock mass. In this way, the sash 2 is fully integrated with the anchor cable.

The flexible net 1 is a net made of cylinders and strip-shaped wires made of ultra-high molecular weight polyethylene material, or a grid made of sheet-like bodies that are crossed and formed by a machine at one time, or made of ultra-high molecular weight polyethylene. A rope net made of cross-woven polyethylene fiber ropes. The mesh formed by the flexible net 1 can be rhombus, square, rectangular, or circular. The flexible net 1 can be one or more layers. The connection points of the grid can be formed at one time Bonded with adhesives, the connection point of the rope net can be formed by intertwining ultra-high molecular weight polyethylene fiber ropes once or several times, or by cross-winding ultra-high molecular weight polyethylene fibers in the process of weaving ropes Made through time.

The sash 2 is a rope, column, beam or strip made of ultra-high molecular weight polyethylene material, and is used to fix the flexible net 1 . The flexible net 1 can be fixed on the sash 2 through the connecting rope 5 as shown in FIG. 1 , or can be bonded on the sash 2 with an adhesive. It can also be fixed on the sash 2 in other ways. When the sash 2 adopts a column and beam structure, its cross-sectional shape can be circular, square, rectangular, U-shaped, I-shaped or sheet-shaped. When used for rockfall prevention, the lower section of the sash 2 with a column and beam structure can extend into the stable rock and soil body through holes, and its anchoring section is closely connected with the rock and soil body through the anchoring agent, so as to be connected with the anchor cable and the flexible rock and soil body. Together the nets 1 form a strong protective structure.

In summary, the above are only preferred embodiments of the present utility model, and are not used to limit the scope of protection of the present utility model. Therefore, any modifications, equivalent replacements, Improvements and the like should all be included within the protection scope of the present utility model.

Claims (7)

1. A protective system for geotechnical protection engineering, characterized in that it comprises: a flexible net and a grid, the flexible net is fixedly arranged on the grid, and is also provided on the grid for fixing An anchor to stabilize the rock and soil mass; the flexible net, the anchor and the grid are all made of ductile materials with certain strength. 2. The protection system of claim 1, wherein said tough material is ultra high molecular weight polyethylene. 3. The protective system according to claim 2, wherein the anchor is an anchor rod or an anchor cable. 4. The protection system of claim 2, wherein the shape of the flexible net is: rhombus, square, rectangle or circle. 5. The protective system according to claim 4, characterized in that the flexible net is one or more layers. 6. The protection system according to claim 2, wherein the sash is formed by criss-crossing ropes, columns, beams or belts. 7. The protective system according to claim 6, characterized in that, the cross-sectional shape of the column or beam is circular, square, rectangular, U-shaped, I-shaped or sheet-shaped.

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