Full-length closed anti-corrosion method for roadway anchor rod in water spraying area
By adopting a full-length sealing and anti-corrosion method in the tunnel of the water-sinking area, the gaps between the anchor body and the drilling hole wall are filled with anchoring agent and sealant, and spraying treatment is performed on the exposed end, the problem that anchor anti-corrosion measures in the prior art cannot fully guarantee the design service life, and the long-lasting and effective anti-corrosion effect of the anchor is achieved.
Patent Information
- Application Number
- CN202510037592.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-10
- Publication Date
- 2025-04-08
AI Technical Summary
The prior art methods for anti-corrosion of anchor rods in water-sprayed tunnels have limitations, and cannot fully guarantee the design service life of anchor rods, and are prone to failure due to material aging or damage during construction.
A full-length sealing and anti-corrosion method is adopted. By first installing anchor agent in the anchor support drill, then installing a solid sealant, and then inserting the anchor body and pushing it to the bottom of the drill hole, the anchor agent and the solid sealant fill the gap between the anchor body and the drill hole wall, and spraying the grouting treatment at the exposed end to achieve the full-length sealing protection of the anchor rod.
It effectively reduces the contact between the anchor rod and water, reduces electrochemical reactions, avoids anchor rod corrosion, ensures the durable effectiveness of protective measures, and is simple to operate and low cost.
Smart Images
Figure CN119777977A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of supporting anchor rods, and in particular to a full-length sealing and anti-corrosion method for anchor rods in a water sprinkling zone laneway. Background Art
[0002] In today's mining development, water-sprinkled tunnels are an inevitable existence. Due to their special geographical environment, these tunnels have long been facing water erosion. This erosion not only affects the stability and safety of the tunnel, but also causes corrosion of the anchor rods. As one of the important means of tunnel support, the main function of the anchor rod is to provide the stability of the tunnel. In the water-sprinkled tunnel, the anchor rod not only has to withstand the pressure from the stratum, but also the erosion from water droplets. Long-term immersion and erosion will lead to a decrease in the strength and rigidity of the anchor rod, thereby affecting the stability and service life of the entire tunnel. Therefore, the anti-corrosion problem of anchor rods in water-sprinkled tunnels has become an urgent problem to be solved in mining development.
[0003] At present, there are two main methods to protect anchors from corrosion: external protective casing and grouting protection. External protective casing: This is a method of covering the outside of the anchor with a flexible plastic or metal casing. The casing can effectively prevent harmful gases and groundwater in the stratum from penetrating into the anchor rod body through the grouting layer, thereby causing corrosion. However, due to the aging performance and service life limitations of the protective casing material, it is difficult to achieve the design life of the anchor rod in actual use. In addition, during the construction of the anchor rod, the protective casing is also easily damaged, resulting in the failure of the anti-corrosion measures. Grouting protection: This is a method of injecting cement slurry (such as cement slurry or cement mortar) into the anchor hole during the construction of the anchor rod. The hardened grouting body is tightly combined with the anchor rod body and forms a solid whole to prevent harmful gases and groundwater in the stratum from penetrating into the anchor rod body. However, under the action of load or stratum movement, cracks often occur in the grouting body, which can penetrate the surface of the anchor rod body, resulting in the failure of the protective measures and the failure to achieve the design service life of the anchor rod. In general, the current anti-corrosion measures for anchor rods have certain limitations and cannot fully guarantee the design service life of the anchor rod. Summary of the invention
[0004] Based on the above technical problems, the present invention proposes a method for full-length sealing and anti-corrosion of anchor rods in a water-spraying zone.
[0005] The technical solution adopted by the present invention is: A method for sealing and anti-corrosion of anchor rods in a water-spraying zone laneway, comprising the following steps: (1) Drilling: Drilling holes for anchor support during construction; (2) Install anchoring agent: insert the anchoring agent bag into the drill hole according to the loading amount, and use the rod to push the anchoring agent bag to the bottom of the drill hole; (3) Installing the sealant: Calculate the amount of the sealant, fill the sealant bag according to the calculated amount, insert the sealant bag into the borehole, and use a rod to push the sealant bag to the deep part of the borehole; (4) Installing the anchor rod and accessories: inserting the anchor rod into the borehole and gradually pushing the end of the anchor rod to the bottom of the borehole. During the pushing process of the anchor rod in the borehole, the anchor rod squeezes and punctures the sealant bag and the anchor bag, so that the anchor and sealant fill the gap between the anchor rod and the borehole wall; wherein the anchor is wrapped in the end area of the anchor rod, and the sealant is wrapped in the remaining area of the anchor rod extending into the borehole; then installing the tray and nut, and applying a pre-tightening force; (5) Grouting: Prepare slurry and spray it at the drill hole to wrap the exposed end of the anchor body and complete the full-length sealing and anti-corrosion of the anchor in the water-spraying area.
[0006] In the above step (1): on the premise of ensuring the support effect, select a location that is convenient for construction and has good hole-making effect to drill anchor support holes.
[0007] Preferably, the setting time of the sealing agent is greater than the setting time of the anchoring agent in the anchoring agent bag.
[0008] Preferably, the anchoring agent bag and the sealing agent bag have the same structure, both of which are in the shape of an elongated cylinder; two independent filling chambers are provided in the anchoring agent bag and the sealing agent bag, namely the first chamber and the second chamber; the first chamber and the second chamber are used for filling the resin and curing agent in the anchoring agent or the sealing agent, respectively.
[0009] Preferably, the packaging bag bodies of the anchoring agent medicine bag and the sealing agent medicine bag are both made of flexible polyester film, plastic film or PVC material; the packaging bag bodies of the anchoring agent medicine bag and the sealing agent medicine bag are of different colors; the cross-sections of the first chamber and the second chamber are both semicircular, and the first chamber and the second chamber are arranged symmetrically; or the cross-section of the first chamber is annular, the cross-section of the second chamber is circular, and the first chamber is arranged on the outside of the second chamber.
[0010] Preferably, in step (2): the anchoring agent filled in the anchoring agent bag includes 30-40 parts of epoxy resin, 20-30 parts of curing agent, 10-20 parts of diluent and 20-30 parts of filler, calculated by weight.
[0011] Preferably, in step (3): the amount of the sealing agent is measured by the length of the sealing agent bag, and the length of the sealing agent bag is , where h is the drilling depth, R 孔 is the drilling radius, r 杆 is the radius of the anchor body, is the radius of the sealant bag, is the loading amount of anchoring agent.
[0012] Preferably, in step (3): the sealing agent comprises epoxy resin, curing agent, filler, diluent and plasticizer; the weight ratio of epoxy resin to curing agent is 1:1, the added amount of filler is 30%-70% of the total amount of epoxy resin, the added amount of diluent is 5%-20% of the total amount of epoxy resin, and the added amount of plasticizer is 3%-10% of the total amount of epoxy resin.
[0013] Preferably, in step (4): after the anchoring agent is anchored, a tray and a nut are installed on the anchor rod body and a pre-tightening force is applied, wherein the pre-tightening force is 30%-60% of the yield force of the anchor rod.
[0014] Preferably, in step (5): cement, aggregate and accelerator are used to prepare slurry; the aggregate is sand and gravel, the weight ratio of cement, sand and gravel is 1:1-3:1-3, and the amount of accelerator is 3%-5% of the weight of cement.
[0015] The beneficial technical effects of the present invention are as follows: In the original anchor rod installation process, the present invention adds a sealing agent after adding an anchoring agent, and then installs the anchor rod body, and performs a grouting treatment on the exposed end, so that the entire length of the anchor rod is wrapped, reducing the contact between the anchor rod and water, and achieving an anti-corrosion effect. By using the anchor rod anti-corrosion method, the entire length of the anchor rod is wrapped, which reduces the penetration of groundwater, reduces electrochemical reactions, solves the problem of anchor rod corrosion, and compared with grouting protection, it can effectively avoid the generation of cracks and ensure the long-term effectiveness of protective measures. The method has the advantages of simple operation, low cost, and good anti-corrosion effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic flow chart of the full-length closed anti-corrosion method for anchor rods in a water-spraying zone laneway of the present invention; Figure 2 It is a schematic diagram of the external structure of the anchoring agent bag or the sealing agent bag in the present invention; Figure 3 A cross-sectional view of an embodiment of an anchoring agent bag or a sealing agent bag in the present invention; Figure 4 It is a cross-sectional view of another embodiment of the anchoring agent bag or the sealing agent bag in the present invention; Figure 5 The present invention is a schematic diagram of the process of carrying out full-length closed construction of anchor rods; wherein a shows the drilling step; b shows the anchoring agent installation step; c shows the sealing agent installation step; d shows the anchor rod body installation step; e shows the grouting step; Figure 6 It is a schematic diagram of the structural principle of the anchor rods in the water sprinkling area after full-length sealing and corrosion protection.
[0017] In the figure: 1-top plate, 2-drilling hole, 3-anchoring agent, 4-anchoring agent bag, 5-sealing agent, 6-sealing agent bag, 7-anchor rod body, 8-tray, 9-nut, 10-mortar layer; 401 - first chamber, 402 - second chamber. DETAILED DESCRIPTION
[0018] The present invention discloses a method for sealing and anti-corrosion of the entire length of an anchor rod in a water-spraying area laneway. In the original process of installing the anchor rod, the present invention first adds an anchoring agent into the drill hole, then adds a sealing agent, and then installs the anchor rod body, and performs a grouting treatment on the exposed end, so that the entire length of the anchor rod is wrapped, reducing the contact between the anchor rod and water, and achieving an anti-corrosion effect. In the present invention, the anchoring end of the anchor rod is wrapped with an anchoring agent, and the sealing agent is used to fill the free end of the anchor rod, and the exposed end is subjected to a grouting treatment to achieve full-length sealing protection of the anchor rod and achieve an anti-corrosion effect.
[0019] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations.
[0020] like Figure 1 As shown, a method for sealing the entire length of anchor rods in a water sprinkling area tunnel for corrosion protection comprises the following steps: (1) Drilling: Drill anchor support holes 2 on the tunnel roof 1. Figure 5 shown.
[0021] Specifically, when constructing the anchor support drilling hole 2, the eyelet position needs to be selected according to the condition of the roof 1. On the premise of ensuring the support effect, a position that is convenient for construction and has a good hole-forming effect is selected to drill the anchor support drilling hole.
[0022] (2) Installing anchoring agent 3: Insert anchoring agent bag 4 into borehole 2 according to the loading amount, and push the anchoring agent bag to the bottom of the borehole with a rod. The anchoring agent bag 4 can be gradually inserted into the borehole in the form of one or more anchoring agents. Figure 5 The middle b shows the situation where two anchoring agent bags 4 are inserted.
[0023] (3) Installing the sealing agent 5: Calculate the amount of the sealing agent 5 and fill the sealing agent bag 6 according to the calculated amount. Insert the sealing agent bag 6 into the drill hole and push the sealing agent bag 6 into the deep part of the drill hole with a rod.
[0024] The solidification time of the sealing agent 5 is greater than the solidification time of the anchoring agent 3 .
[0025] The anchoring agent bag 4 and the sealing agent bag 6 have the same structure, both of which are in the shape of an elongated cylinder. Figure 2As shown, it is convenient to insert it into the slender drilled hole. Two independent filling chambers are provided in the anchoring agent bag 4 and the sealing agent bag 6, namely the first chamber 401 and the second chamber 402; the first chamber 401 and the second chamber 402 are used to fill the resin and the curing agent in the anchoring agent or the sealing agent, respectively. The main function of the anchoring agent bag 4 and the sealing agent bag 6 both adopt two independent filling chambers for packaging is to separate the resin and the curing agent to prevent them from reacting prematurely during storage and transportation. Of course, some fillers, additives, etc. can also be filled in the first chamber 401 or the second chamber 402 together with the resin.
[0026] (4) Install the anchor rod body and accessories: insert the anchor rod body 7 into the borehole, and gradually push the end of the anchor rod body 7 to the bottom of the borehole. During the process of pushing the anchor rod body into the borehole, the anchor rod body squeezes and punctures the sealant bag and the anchor bag, so that the anchor and the sealant fill the gap between the anchor rod body and the borehole wall. Among them, the anchor 3 is wrapped in the end area of the anchor rod body 7, and the sealant 5 is wrapped in the remaining area of the anchor rod body extending into the borehole. In other words, the anchor 3 wraps the anchoring end of the anchor rod body 7, and the sealant 5 fills and wraps the free end of the anchor rod body. Then install the tray 8 and the nut 9, and apply a preload.
[0027] (5) Shotcrete: Prepare slurry and spray it at the drilled hole to form a mortar layer 10. Before spraying, the top of the tunnel must be cleaned with compressed air and water before spraying. Figure 5 , Figure 6 As shown, the exposed end of the anchor rod body 7 is wrapped by a mortar layer 10, thereby completing the full-length closure and anti-corrosion of the anchor rod in the water-spraying area tunnel.
[0028] As a further design of the present invention, the packaging bags of the anchoring agent bag 4 and the sealing agent bag 6 are made of flexible polyester film, plastic film or PVC material, which has good chemical resistance and durability, and can ensure the quality and safety of the product. The packaging bags of the anchoring agent bag 4 and the sealing agent bag 6 are of different colors, such as the sealing agent bag 6 can be set to blue to facilitate distinction. The cross-sections of the first chamber 401 and the second chamber 402 are both semicircular, and the first chamber 401 and the second chamber 402 are arranged symmetrically, such as Figure 3 Or the cross section of the first chamber 401 is annular, the cross section of the second chamber 402 is circular, and the first chamber 401 is sleeved on the outside of the second chamber 402, as shown. Figure 4 shown.
[0029] In the above step (2): the anchoring agent 3 filled in the anchoring agent bag 4 is mainly composed of epoxy resin, curing agent, diluent, filler, etc. Epoxy resin is the main component, generally accounting for 30%-40%. Commonly used epoxy resins include bisphenol A type epoxy resins, such as E-44, E-51 and other models, which provide the main structure for bonding. Curing agent accounts for 20%-30%, and the proportion varies with different types of curing agents. For example, amine curing agents, fatty amines have a fast curing speed and are used in some occasions where rapid anchoring is required. Aromatic amines have a slightly slower curing speed, but the performance of the cured product is better. The proportion needs to be determined according to the specific amines and engineering requirements. Diluent accounts for about 10%-20%, and its function is to reduce the viscosity of epoxy resin and facilitate operation. For example, active diluents (such as 1,4-butanediol diglycidyl ether) can participate in the curing reaction and improve the flexibility of the resin. Inactive diluents (such as acetone) are mainly used to adjust the viscosity. Fillers account for about 20%-30%, such as quartz powder, calcium carbonate, etc. Fillers can reduce costs, reduce curing shrinkage, and improve the compressive strength and hardness of the anchor. Quartz powder can improve the wear resistance and corrosion resistance of the anchor, and calcium carbonate can increase the volume of the anchor and adjust the performance.
[0030] In the above step (3): the amount of the sealing agent is measured by the length of the sealing agent bag, and the volume of the sealing agent bag is , the length is , where h is the drilling depth, R 孔 is the drilling radius, r 杆 is the radius of the anchor body, is the radius of the sealant bag, is the loading amount of anchoring agent.
[0031] The main components of the sealant include two types: resin and curing agent. Resin: It is the main component, and unsaturated polyester resin or epoxy resin is selected. The resin also needs to be used with fillers and additives that help the curing process. Its main components are resin, fillers (such as quartz sand, calcium carbonate, etc.), additives (diluents, plasticizers), etc. The addition amount of fillers (such as calcium carbonate, quartz powder, etc.) is between 30%-70% of the resin mass, which is used to enhance the mechanical properties of the sealant and reduce costs; the addition amount of diluent accounts for about 5%-20% of the total resin, which is used to adjust the viscosity of the sealant and facilitate construction operations; the addition of plasticizer accounts for 3%-10%, which can improve the flexibility of the sealant. The selection and ratio of resin affects the curing speed, strength and adaptability. The curing agent plays a role in initiating the resin curing reaction. Amine curing agents, such as aromatic amine curing agents (such as m-phenylenediamine), are selected. It has a relatively high curing temperature, but a slow curing speed and the cured product has better thermal stability, mechanical properties and chemical stability.
[0032] Furthermore, the epoxy resin and curing agent used in the sealant are preferably in a ratio of 1:1, which allows the sealant to fully wrap the anchor rod and avoid gaps between the anchor rod and the sealant. In addition, the setting time of the sealant is longer than that of the anchoring agent, which allows the anchor rod to be smoothly pushed to the top, or the bottom of the borehole.
[0033] In the above step (3): the tail of the anchor rod body can be further connected to the anchor drilling machine through a connector. The anchor drilling machine is started, and the anchor drilling machine drives the anchor rod body to rotate through the connector, squeezes and punctures the anchoring agent bag and the sealing agent bag, and plays a role in breaking up and stirring the anchoring agent and the sealing agent, while pushing the anchor rod body to the bottom of the hole at a uniform speed. After the anchoring agent anchors the anchor rod body, the tray and nut are installed and a pre-tightening force is applied, and the pre-tightening force is 30-60% of the yield force of the anchor rod.
[0034] In the above step (4): after the anchoring agent is anchored, the tray and nut are installed on the anchor rod body and a pre-tightening force is applied. The pre-tightening force is 30%-60% of the yield force of the anchor rod.
[0035] In the above step (5): cement, aggregate and accelerator are used to prepare slurry. The strength grade of mine shotcrete is generally required to be no less than C20. Generally speaking, the weight ratio of cement, sand and gravel is about 1:2:2.
[0036] Cement: Ordinary Portland cement of grade 42.5 or above is usually used, such as 425# ordinary Portland cement, whose strength and stability can meet the requirements of mine shotcrete. Aggregate: The particle size of gravel is generally 5-15mm, and medium-coarse sand should be used, such as medium-coarse sand with a particle size of 0.35-0.5mm, and the mud content does not exceed 5%, which can ensure the density and strength of concrete. Accelerator: The dosage of accelerator is generally 3%-5% of the weight of cement, which can make the concrete solidify in a short time and quickly reach a certain strength, providing timely and effective support for mine support.
[0037] In the above method, the surface of the anchor rod needs to be cleaned before the anchor rod is subjected to anti-corrosion treatment to make it clean and free of debris, which is conducive to full contact between the anchor rod and the sealing agent, and can also ensure that the anti-corrosion material will not fall off due to debris.
[0038] The present invention provides full-length sealed protection for the anchor rod body, that is, the anchoring end is wrapped by an anchoring agent, the free end is wrapped by a sealing agent, and the exposed end is wrapped by spraying, thereby effectively solving the corrosion problem of the anchor rod, and the operation is simple and the cost is low.
[0039] The present invention will be further described below in conjunction with specific application examples.
[0040] like Figure 5 , Figure 6As shown, the present invention provides an anchor rod anti-corrosion method to perform full-length closed anti-corrosion treatment on the anchor rod in the water sprinkling area roadway, comprising the following steps: (1) Drilling. Drill holes with a diameter of 28 mm and a length of 2 m are arranged on the roof 1. When drilling holes for anchor support, the location of the holes should be selected according to the conditions of the roof. On the premise of ensuring the support effect, a location that is convenient for construction and has a good hole-forming effect should be selected.
[0041] (2) Install the anchoring agent. Insert two bags of anchoring agent 4 into the drill hole in sequence according to the loading amount and push them to the bottom of the hole with a rod.
[0042] (3) Install the sealing agent.
[0043] The amount of sealant used is the volume of the borehole minus the volume of the anchor and anchor, which can be expressed as , the length of the sealant is , where h is the drilling depth, R 孔 is the drilling radius, r 杆 is the radius of the anchor body, is the diameter of the sealant, is the amount of anchoring agent used. The diameter of the sealing agent is the same as the diameter of the anchoring agent, and the length of the sealing agent is calculated to be about 45 cm.
[0044] Insert the sealing agent bag 6 into the hole according to the amount of medicine charged and push it in with the rod.
[0045] (4) Installation of anchor rod and accessories. Connect the tail of the anchor rod to the anchor drilling rig through the connector, start the anchor drilling rig to stir the anchoring agent and sealing agent, and push the anchor rod to the bottom of the hole at a uniform speed while stirring. The diameter of the anchor rod is 20 mm and the length is 2.2 m. After the anchor rod is anchored by the anchoring agent, install the tray and nut on the exposed end of the anchor rod and apply preload, which is 30-60% of the yield force of the anchor rod.
[0046] (5) Shotcrete. Before spraying, the top of the tunnel must be cleaned with compressed air and water before spraying. Ordinary Portland cement with a strength grade of 42.5 must be used for shotcrete. The sand should be medium-coarse sand, the gravel particle size should be 4-6mm, and the weight ratio of cement, sand and gravel should be 1:2:2. The amount of accelerator added is generally 3-4% of the weight of cement. The upper limit is taken for arch spraying. When spraying water areas, the amount of accelerator added can be increased as appropriate. The accelerator must be added evenly at the feed port of the shotcrete machine.
[0047] The parts not mentioned in the above methods can be realized by adopting or drawing on existing technologies.
[0048] Finally, it should be noted that the innovation of the present invention mainly lies in the full-length closure of the anchor rod in stages, the length calculation of the sealing agent, the material ratio and the operation method, etc., and the focus is not on the installation of the anchor rod. The above specific implementation methods are only used to illustrate the technical solution of the present invention and are not limited. Ordinary technicians in this field should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.
Claims
1. A method for sealing and anti-corrosion of anchor rods in all lengths of tunnels in a water-spraying area, characterized in that The following steps are involved: (1) Drilling: Drilling holes for anchor support during construction; (2) Install anchoring agent: insert the anchoring agent bag into the drill hole according to the loading amount, and use the rod to push the anchoring agent bag to the bottom of the drill hole; (3) Installing the sealant: Calculate the amount of the sealant, fill the sealant bag according to the calculated amount, insert the sealant bag into the borehole, and use a rod to push the sealant bag to the deep part of the borehole; (4) Installing the anchor rod and accessories: inserting the anchor rod into the borehole and gradually pushing the end of the anchor rod to the bottom of the borehole. During the pushing process of the anchor rod in the borehole, the anchor rod squeezes and punctures the sealant bag and the anchor bag, so that the anchor and sealant fill the gap between the anchor rod and the borehole wall; wherein the anchor is wrapped in the end area of the anchor rod, and the sealant is wrapped in the remaining area of the anchor rod extending into the borehole; then installing the tray and nut, and applying a pre-tightening force; (5) Spraying: Prepare slurry and spray it at the drill hole to wrap the exposed end of the anchor rod body and complete the full-length sealing and anti-corrosion of the anchor rod in the water-spraying area.
2. A method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area laneway according to claim 1, characterized in that: In step (1): on the premise of ensuring the support effect, select a location that is convenient for construction and has good hole-making effect to drill anchor support holes.
3. A method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area lane according to claim 1, characterized in that: The setting time of the sealing agent is greater than the setting time of the anchoring agent in the anchoring agent bag.
4. A method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area lane according to claim 1, characterized in that: The anchoring agent bag and the sealing agent bag have the same structure and are both in the shape of an elongated cylinder. Two independent filling chambers are provided in the anchoring agent bag and the sealing agent bag, namely the first chamber and the second chamber. The first chamber and the second chamber are used for filling the resin and curing agent in the anchoring agent or the sealing agent, respectively.
5. A method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area lane according to claim 4, characterized in that: The packaging bag bodies of the anchoring agent medicine bag and the sealing agent medicine bag are both made of flexible polyester film, plastic film or PVC material; the packaging bag bodies of the anchoring agent medicine bag and the sealing agent medicine bag are of different colors; the cross-sections of the first chamber and the second chamber are both semicircular, and the first chamber and the second chamber are arranged symmetrically; or the cross-section of the first chamber is annular, the cross-section of the second chamber is circular, and the first chamber is arranged on the outside of the second chamber.
6. A method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area laneway according to claim 1, characterized in that: In step (2): the anchoring agent filled in the anchoring agent bag includes 30-40 parts of epoxy resin, 20-30 parts of curing agent, 10-20 parts of diluent and 20-30 parts of filler, calculated by weight.
7. A method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area laneway according to claim 4, characterized in that: In step (3): the amount of the sealing agent is measured by the length of the sealing agent bag. The length of the sealing agent bag is , where h is the drilling depth, R 孔 is the drilling radius, r 杆 is the radius of the anchor body, is the radius of the sealant bag, is the loading amount of anchoring agent.
8. The method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area lane according to claim 1 is characterized in that: In step (3), the sealing agent comprises epoxy resin, curing agent, filler, diluent and plasticizer; the weight ratio of epoxy resin to curing agent is 1:1, the added amount of filler is 30%-70% of the total amount of epoxy resin, the added amount of diluent is 5%-20% of the total amount of epoxy resin, and the added amount of plasticizer is 3%-10% of the total amount of epoxy resin.
9. A method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area laneway according to claim 1, characterized in that: In step (4): after the anchoring agent is anchored, a tray and a nut are installed on the anchor rod body and a pre-tightening force is applied. The pre-tightening force is 30%-60% of the yield force of the anchor rod.
10. A method for full-length sealing and anti-corrosion of anchor rods in a water-spraying area laneway according to claim 1, characterized in that: In step (5), cement, aggregate and accelerating agent are used to prepare slurry; the aggregate is sand and gravel, the weight ratio of cement, sand and gravel is 1:1-3:1-3, and the amount of accelerating agent is 3%-5% of the weight of cement.