Basalt fiber bar anchor head structure and slope reinforcement construction method

Abstract

The invention discloses a basalt fiber bar anchor head structure and a slope reinforcement construction method, and belongs to the field of slope reinforcement, the basalt fiber bar anchor head structure comprises a basalt fiber bar and a combined pipe body, the combined pipe body comprises a lower PVC guide pipe, a working anchor clamping sleeve, a middle PVC connecting pipe, a tool anchor clamping sleeve and an upper PVC guide pipe; a cutting section is formed in the middle of the middle PVC connecting pipe; the basalt fiber rib is inserted into the combined pipe body from the lower PVC guide pipe to the position, close to the upper PVC guide pipe, in the tool anchor clamping sleeve, and the free end strain gauge and the anchor head end strain gauge on the basalt fiber rib are located in the lower PVC guide pipe and the middle PVC connecting pipe correspondingly. A strain gauge connecting wire of the free end strain gauge and the anchor head end strain gauge is led out from a strain gauge lead pipe of the middle PVC connecting pipe; organic glue is filled between the basalt fiber rib and the combined pipe body; according to the slope reinforcing construction method, the anchor head structure is utilized, and the slope can be reinforced and monitored.

Description

Technical Field

[0001] The invention belongs to the field of slope reinforcement, and particularly relates to a basalt fiber reinforcement anchor head structure and a slope reinforcement construction method. Background Art

[0002] Slope reinforcement projects are common in various engineering construction projects such as water conservancy and hydropower, road transportation, and housing construction. The currently commonly used steel prestressed anchor cables or anchor rods cannot monitor the prestress when reinforcing slopes. In addition, the cutting and protection construction of the anchor head is time-consuming and laborious due to the steel material. Moreover, these drawbacks are particularly prominent in engineering environments such as high and steep slopes and mountain canyon areas.

[0003] As a new, green, and low-cost material, basalt fiber reinforcement has great application prospects in slope reinforcement projects. Due to the complex topography of the slope, the ease of tensioning, easy cutting, and easy stress monitoring of the anchor head of the basalt fiber reinforcement in actual applications directly determine the construction convenience and engineering applicability of the reinforcement. How to prepare an anchor head structure that combines the three properties of "easy tensioning, easy cutting, and easy stress monitoring" is the key to promoting the application of basalt fiber reinforcement in slope reinforcement projects. Summary of the invention

[0004] The purpose of the present invention is to provide a basalt fiber reinforcement anchor head structure and a slope reinforcement construction method. The anchor head structure is not only convenient for tensioning and cutting at the basalt fiber reinforcement anchor head, but also can realize real-time monitoring of the stress conditions of the basalt fiber reinforcement at different positions, and has the dual effects of reinforcement and monitoring of slope engineering.

[0005] In order to achieve the above-mentioned purpose, the technical scheme adopted by the present invention is: a basalt fiber tendon anchor head structure, comprising a basalt fiber tendon and a combined pipe body, wherein the combined pipe body comprises a lower PVC lead pipe, a working anchor clamping sleeve, a middle PVC connecting pipe, a tool anchor clamping sleeve and an upper PVC lead pipe which are sequentially plugged in; the middle position of the middle PVC connecting pipe forms a cutting section which avoids the working anchor clamping sleeve and the tool anchor clamping sleeve; the basalt fiber tendon is inserted into the combined pipe body from the lower PVC lead pipe and inserted into the position in the tool anchor clamping sleeve close to the upper PVC lead pipe, the free end strain gauge and the anchor head end strain gauge pasted on the basalt fiber tendon are respectively located in the lower PVC lead pipe and the middle PVC connecting pipe, and the strain gauge connecting wires of the free end strain gauge and the anchor head end strain gauge are led out from the strain gauge lead pipe on the middle PVC connecting pipe; the gap between the basalt fiber tendon and the combined pipe body is filled with organic glue.

[0006] Specifically, the free-end strain gauge is located on the inner side of the first end of the lower PVC guide tube, and the working anchor clamping sleeve is inserted into the second end of the lower PVC guide tube.

[0007] Specifically, the working anchor clamping sleeve is inserted into the first end of the middle PVC connecting pipe, and the tool anchor clamping sleeve is inserted into the second end of the middle PVC connecting pipe. The corresponding part between the end faces of the working anchor clamping sleeve and the tool anchor clamping sleeve is the cutting section.

[0008] Furthermore, the position of the anchor head end strain gauge in the middle PVC connecting pipe corresponds to the position of the working anchor clamping sleeve therein.

[0009] Specifically, the outer diameter of the working anchor clamping sleeve is equal to the inner diameters of the lower PVC guide pipe and the middle PVC connecting pipe, and the outer diameter of the tool anchor clamping sleeve is equal to the inner diameters of the middle PVC connecting pipe and the upper PVC guide pipe.

[0010] Specifically, the insertion depth of the working anchor clamping sleeve in the lower PVC guide pipe is less than the length of the lower PVC guide pipe; the insertion depth of the tool anchor clamping sleeve in the upper PVC guide pipe is less than the length of the upper PVC guide pipe.

[0011] Optionally, the insertion depth of the working anchor clamping sleeve in the lower PVC lead pipe is equal to 1 / 3 of the length of the lower PVC lead pipe; the insertion depth of the working anchor clamping sleeve and the tool anchor clamping sleeve into the middle PVC connecting pipe is both 1 / 5 of the length of the middle PVC connecting pipe; the insertion depth of the tool anchor clamping sleeve into the upper PVC lead pipe is 1 / 3 of the length of the upper PVC lead pipe.

[0012] Optionally, the insertion depth of the working anchor clamping sleeve in the lower PVC lead pipe is equal to 1 / 3 of the length of the lower PVC lead pipe; the insertion depth of the working anchor clamping sleeve and the tool anchor clamping sleeve into the middle PVC connecting pipe is both 1 / 3 of the length of the middle PVC connecting pipe; the insertion depth of the tool anchor clamping sleeve into the upper PVC lead pipe is 1 / 3 of the length of the upper PVC lead pipe.

[0013] Specifically, the basalt fiber reinforcement is inserted into the position where the tool anchor clamping sleeve and the upper PVC guide tube are connected.

[0014] A slope reinforcement construction method, which adopts the above-mentioned basalt fiber reinforcement anchor head structure, comprises the following steps: (1) Keeping the basalt fiber reinforcement in the center, lower the basalt fiber reinforcement anchor head structure into the drilled slope hole, so that the lower PVC guide pipe is completely inserted into the slope hole, and then injecting grouting material into the slope hole to play the role of drilling anchoring; (2) The basalt fiber reinforcement anchor head structure exposed outside the drilled hole of the slope is passed through the through-hole jack, the working anchor is perpendicular to the basalt fiber reinforcement and is located on the slope surface, and is clamped on the working anchor clamping sleeve, the tool anchor is clamped on the tool anchor clamping sleeve, and the working anchor and the tool anchor are against the through-hole jack; (3) Starting the through-hole jack to apply prestress, and the two ends of the through-hole jack respectively press against the working anchor and the tool anchor to perform graded tensioning; after the tensioning is completed, the tool anchor and the through-hole jack are removed, and the working anchor is kept clamping the working anchor clamping sleeve; the strain gauge at the anchor head end monitors the stress and deformation of the basalt fiber reinforcement in the working anchor, and the strain gauge at the free end monitors the stress and deformation of the basalt fiber reinforcement in the slope borehole; (4) using a cutting machine to cut off the middle PVC connecting pipe at the cutting section position on the middle PVC connecting pipe; (5) Pour concrete at the remaining anchor head structure outside the slope to form a concrete protection pier to protect the working anchor and the remaining part of the anchor head structure.

[0015] The beneficial effects of the present invention are: 1. The basalt fiber reinforcement anchor head structure proposed in the present invention integrates the three properties of "easy tensioning, easy cutting and easy stress monitoring", which can promote the application of basalt fiber reinforcement in various slope reinforcement projects such as water conservancy and hydropower, road traffic, and house construction. Compared with traditional steel materials for slope reinforcement, it greatly reduces the construction cost and optimizes the construction process.

[0016] 2. The basalt fiber reinforcement anchor head structure of the present invention forms a cutting section at the middle position of the middle PVC connecting pipe, which can be cut by a handheld cutting machine, making the anchor head easy to cut. Compared with the traditional anchor head structure, the construction cost is greatly reduced and the construction process is optimized.

[0017] 3. The basalt fiber tendon anchor head structure of the present invention monitors the stress and deformation of the basalt fiber tendons in the working anchor through the strain gauge at the anchor head end, and the strain gauge at the free end monitors the stress and deformation of the basalt fiber tendons at the free end. The stress conditions of the basalt fiber tendons at different positions can be grasped in real time through the anchor head structure, which is convenient for evaluating the stability of the slope after reinforcement.

[0018] 4. The basalt fiber reinforcement anchor head structure of the present invention is simple to manufacture and convenient to process. The use of the anchor head structure can greatly promote the application of basalt fiber reinforcement new materials in slope reinforcement projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 This is a schematic diagram of the basalt fiber reinforcement anchor head structure in Example 1; Figure 2 This is a schematic diagram of a cutting section of the basalt fiber reinforcement anchor head structure in Example 1; Figure 3 This is a schematic diagram of the basalt fiber tendon anchor head structure in Example 2 during the tensioning operation; Figure 4 This is a schematic diagram of the application of the basalt fiber reinforcement anchor head structure in Example 2 in slope reinforcement; Markings in the figure: 1. Basalt fiber reinforcement, 2. Lower PVC lead pipe, 3. Middle PVC connecting pipe, 4. Upper PVC lead pipe, 5. Working anchor clamping sleeve, 6. Tool anchor clamping sleeve, 7. Free end strain gauge, 8. Anchor head end strain gauge, 9. Strain gauge lead pipe, 10. Strain gauge connecting wire, 11. Strain data collector, 12. Cutting section, 13. Working anchor, 14. Tool anchor, 15. Through-hole jack, 16. Slope surface, 17. Centering ring, 18. Slope drilling, 19. Grouting material, 20. Concrete protection pier. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the invention in any way.

[0022] Example 1 like Figure 1 As shown, a basalt fiber tendon anchor head structure includes a basalt fiber tendon 1, a lower PVC guide pipe 2, a middle PVC connecting pipe 3, an upper PVC guide pipe 4, a working anchor clamping sleeve 5, a tool anchor clamping sleeve 6, a free end strain gauge 7 and an anchor head end strain gauge 8.

[0023] The first end of the working anchor clamping sleeve 5 is inserted into the second end of the lower PVC guide pipe 2, the second end of the working anchor clamping sleeve 5 is inserted into the first end of the middle PVC connecting pipe 3, the first end of the tool anchor clamping sleeve 6 is inserted into the second end of the middle PVC connecting pipe 3, and the second end of the tool anchor clamping sleeve 6 is inserted into the first end of the upper PVC guide pipe 4. The "first end" and "second end" are based on the direction in which the anchor head structure is lowered into the slope drill hole during slope reinforcement. During construction, the end facing the slope drill hole is the "first end", and the other opposite end is the "second end". The depth of the working anchor clamping sleeve 5 inserted into the lower PVC guide pipe 2 and the middle PVC connecting pipe 3 is less than the length of the corresponding PVC pipe, and the depth of the tool anchor clamping sleeve 6 inserted into the middle PVC connecting pipe 3 and the upper PVC guide pipe 4 is less than the length of the corresponding PVC pipe. And, as Figure 2 As shown, the sum of the depth of the working anchor clamping sleeve 5 inserted into the middle PVC connecting pipe 3 and the depth of the tool anchor clamping sleeve 6 inserted into the middle PVC connecting pipe 3 is less than the length of the middle PVC connecting pipe 3, thereby forming a cutting section 12 without the working anchor clamping sleeve 5 or the tool anchor clamping sleeve 6 in the middle position of the middle PVC connecting pipe 3, which serves as the cutting position after the slope anchor cable tensioning and locking construction.

[0024] The lower PVC lead pipe 2, the middle PVC connecting pipe 3, the upper PVC lead pipe 4, the working anchor clamping sleeve 5, and the tool anchor clamping sleeve 6 form a combined pipe body. In addition, the outer diameter of the working anchor clamping sleeve 5 is equal to the inner diameter of the lower PVC lead pipe 2 and the middle PVC connecting pipe 3, and the outer diameter of the tool anchor clamping sleeve 6 is equal to the inner diameter of the middle PVC connecting pipe 3 and the upper PVC lead pipe 4, so that the working anchor clamping sleeve 5 and the tool anchor clamping sleeve 6 can be tightly connected with the lower PVC lead pipe 2, the middle PVC connecting pipe 3 and the upper PVC lead pipe 4.

[0025] Optionally, the insertion depth of the working anchor clamping sleeve 5 in the lower PVC lead pipe 2 is equal to 1 / 3 of the length of the lower PVC lead pipe 2; the insertion depths of the working anchor clamping sleeve 5 and the tool anchor clamping sleeve 6 into the middle PVC connecting pipe 3 are both 1 / 3 of the length of the middle PVC connecting pipe 3; the insertion depth of the tool anchor clamping sleeve 6 into the upper PVC lead pipe 4 is 1 / 3 of the length of the upper PVC lead pipe 4.

[0026] Optionally, the insertion depth of the working anchor clamping sleeve 5 in the lower PVC lead pipe 2 is equal to 1 / 3 of the length of the lower PVC lead pipe 2; the insertion depths of the working anchor clamping sleeve 5 and the tool anchor clamping sleeve 6 into the middle PVC connecting pipe 3 are both 1 / 5 of the length of the middle PVC connecting pipe 3; the insertion depth of the tool anchor clamping sleeve 6 into the upper PVC lead pipe 4 is 1 / 3 of the length of the upper PVC lead pipe 4.

[0027] The upper part of the basalt fiber reinforcement 1 is inserted into the combined pipe body from the first end of the lower PVC lead pipe 2 until the basalt fiber reinforcement 1 is inserted into the tool anchor clamping sleeve 6. Further, the basalt fiber reinforcement 1 is inserted to the position where the tool anchor clamping sleeve 6 and the upper PVC lead pipe 4 are connected.

[0028] The lower PVC lead pipe 2, the middle PVC connecting pipe 3 and the upper PVC lead pipe 4 are all transparent hard PVC pipes, and the length, inner diameter, outer diameter and other parameters of each component are determined according to specific engineering requirements.

[0029] Strain gauges are attached to the basalt fiber tendon 1, which are free end strain gauge 7 and anchor head end strain gauge 8. After the basalt fiber tendon 1 is inserted into the combined pipe body, the free end strain gauge 7 is in the lower PVC lead pipe 2 and close to the first end of the lower PVC lead pipe 2, and the anchor head end strain gauge 8 is in the middle PVC connecting pipe 3 and corresponds to the position of the working anchor clamping sleeve 5 inserted therein. A strain gauge lead pipe 9 is provided on the side of the middle PVC connecting pipe 3, and the strain gauge connecting wire 10 of the free end strain gauge 7 and the strain gauge connecting wire 10 of the anchor head end strain gauge 8 are led out from the strain gauge lead pipe 9, and the led out strain gauge connecting wire 10 is connected to an external strain data collector 11.

[0030] The gap between the basalt fiber reinforcement 1 and the combined pipe body is also filled with organic glue, such as epoxy resin glue, etc. The basalt fiber reinforcement 1 is fixed in the center of the combined pipe body by the poured organic glue. When pouring, the organic glue is poured in from the second end port of the upper PVC lead pipe 4, and the organic glue flows from top to bottom to fill the internal gap.

[0031] After the glue is poured, the free end strain gauge 7 and the anchor head end strain gauge 8 are respectively located inside the lower PVC lead pipe 2 and the middle PVC connecting pipe 3, so as to protect the strain gauges.

[0032] If the lower PVC lead pipe 2 and the upper PVC lead pipe 4 are not provided in the anchor head structure of the present invention, the organic glue will shrink to a certain extent along the axial direction of the basalt fiber tendon 1 after solidification. On the one hand, the free end strain gauge 7 pasted on the basalt fiber tendon 1 will be exposed, and the free end strain gauge 7 will not be protected. On the other hand, the colloid of the working anchor clamping sleeve 5 and the tool anchor clamping sleeve 6 will be in a loose state, and the full bonding of the basalt fiber tendon 1 in the working anchor clamping sleeve 5 and the tool anchor clamping sleeve 6 cannot be guaranteed.

[0033] Example 2 This embodiment adopts the basalt fiber reinforcement anchor head structure described in Example 1 to carry out slope reinforcement construction, and the specific construction method is as follows: 1. Install multiple centering rings 17 on the exposed basalt fiber reinforcement 1 in the basalt fiber reinforcement anchor head structure and fix them with steel wires. Then, keep the basalt fiber reinforcement 1 in the center and lower the basalt fiber reinforcement anchor head structure into the drilled slope hole 18, so that the lower PVC guide pipe 2 enters the slope drill hole 18 completely. Then, inject grouting material 19 into the slope drill hole 18 to play a role in drilling anchoring. 2. The anchor head structure exposed outside the slope drill hole 18 is passed through the through-hole jack 15. The working anchor 13 is perpendicular to the basalt fiber reinforcement 1 and is located on the slope surface 16. The working anchor 13 is clamped on the working anchor clamping sleeve 5. The tool anchor 14 is clamped on the tool anchor clamping sleeve 6. The working anchor 13 and the tool anchor 14 are against the through-hole jack 15. 3. Start the through-hole jack 15 to apply prestress, and the two ends of the through-hole jack 15 respectively press against the working anchor 13 and the tool anchor 14 for graded tensioning; after the tensioning is completed, remove the tool anchor 14 and the through-hole jack 15, at this time the working anchor 13 is still clamped in the working anchor clamping sleeve 5, the anchor head end strain gauge 8 monitors the stress and deformation of the basalt fiber reinforcement 1 in the working anchor 13, and the free end strain gauge 7 monitors the stress and deformation of the basalt fiber reinforcement 1 in the slope borehole 18, so as to grasp the stress conditions of the basalt fiber reinforcement 1 at different positions in real time; 4. Use a cutting machine to cut off the middle PVC connecting pipe 3 at the cutting section 12 on the middle PVC connecting pipe 3, avoiding the strain gauge lead pipe 9 during cutting; after cutting, the exposed length of the anchor head structure on the slope surface 16 can be reduced, which is convenient for the next step of construction of the protection pier; 5. Pour concrete at the anchor head structure outside the slope to form a concrete protection pier 20 to protect the working anchor 13 and the remaining part of the anchor head structure, thus completing the protection of the basalt fiber reinforcement anchor head structure after construction.

[0034] The basalt fiber reinforcement anchor head structure and slope reinforcement construction method proposed in the present invention were tested and verified by CCCC Infrastructure Maintenance Group Co., Ltd. in the reinforcement of the broken rock slope at the entrance of Qinglongshan Tunnel in the reconstruction project of the Luoyang section of National Highway G310 (Tiemen Town to Sanmenxia City Boundary) in Luoyang City, Henan Province. Since the anchor head structure has the characteristics of "easy tensioning, easy cutting and easy stress monitoring", the anchor head structure and slope reinforcement construction method described in the present invention significantly improve the construction convenience of the basalt fiber reinforcement slope, and reduce the cost of the slope reinforcement project (from the original 100 yuan / hole to about 25 yuan / hole, a reduction of 3 / 4); in addition, the anchor head structure also realizes the monitoring of the stress characteristics of the reinforcement material after the slope reinforcement, achieving the effect of integrated slope reinforcement and monitoring. Obviously, the present invention has significantly promoted the development and innovation of slope reinforcement technology, and has significant economic benefits and engineering effects.

[0035] The above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the same. Those skilled in the art should understand that the specific implementation modes of the present invention may be modified or replaced by equivalents with reference to the above embodiments. Any modifications or equivalent replacements that do not depart from the spirit and scope of the present invention are within the scope of protection of the pending claims.

Claims

1. A basalt fiber tendon anchor head structure, comprising basalt fiber tendons, characterized in that: The utility model also comprises a combined pipe body, which comprises a lower PVC lead pipe, a working anchor clamping sleeve, a middle PVC connecting pipe, a tool anchor clamping sleeve and an upper PVC lead pipe which are plugged in sequence; the middle position of the middle PVC connecting pipe forms a cutting section which avoids the working anchor clamping sleeve and the tool anchor clamping sleeve; the basalt fiber tendon is inserted into the combined pipe body from the lower PVC lead pipe and inserted into the tool anchor clamping sleeve near the upper PVC lead pipe; the free end strain gauge and the anchor head end strain gauge pasted on the basalt fiber tendon are respectively located in the lower PVC lead pipe and the middle PVC connecting pipe, and the strain gauge connecting wires of the free end strain gauge and the anchor head end strain gauge are led out from the strain gauge lead pipe on the middle PVC connecting pipe; the gap between the basalt fiber tendon and the combined pipe body is filled with organic glue.

2. The basalt fiber reinforcement anchor head structure according to claim 1, characterized in that: The free end strain gauge is located on the inner side of the first end of the lower PVC lead pipe, and the working anchor clamping sleeve is inserted into the second end of the lower PVC lead pipe.

3. The basalt fiber reinforcement anchor head structure according to claim 1, characterized in that: The working anchor clamping sleeve is inserted into the first end of the middle PVC connecting pipe, and the tool anchor clamping sleeve is inserted into the second end of the middle PVC connecting pipe. The corresponding part between the end faces of the working anchor clamping sleeve and the tool anchor clamping sleeve is the cutting section.

4. The basalt fiber reinforcement anchor head structure according to claim 3 is characterized in that: The position of the anchor head end strain gauge in the middle PVC connecting pipe corresponds to the position of the working anchor clamping sleeve therein.

5. The basalt fiber reinforcement anchor head structure according to claim 1, characterized in that: The outer diameter of the working anchor clamping sleeve is equal to the inner diameters of the lower PVC guide pipe and the middle PVC connecting pipe, and the outer diameter of the tool anchor clamping sleeve is equal to the inner diameters of the middle PVC connecting pipe and the upper PVC guide pipe.

6. The basalt fiber reinforcement anchor head structure according to claim 1, characterized in that: The insertion depth of the working anchor clamping sleeve in the lower PVC guide pipe is less than the length of the lower PVC guide pipe; the insertion depth of the tool anchor clamping sleeve in the upper PVC guide pipe is less than the length of the upper PVC guide pipe.

7. The basalt fiber reinforcement anchor head structure according to claim 6, characterized in that: The insertion depth of the working anchor clamping sleeve in the lower PVC guide pipe is equal to 1 / 3 of the length of the lower PVC guide pipe; the insertion depth of the working anchor clamping sleeve and the tool anchor clamping sleeve in the middle PVC connecting pipe is both 1 / 5 of the length of the middle PVC connecting pipe; the insertion depth of the tool anchor clamping sleeve in the upper PVC guide pipe is 1 / 3 of the length of the upper PVC guide pipe.

8. The basalt fiber reinforcement anchor head structure according to claim 6, characterized in that: The insertion depth of the working anchor clamping sleeve in the lower PVC guide pipe is equal to 1 / 3 of the length of the lower PVC guide pipe; the insertion depth of the working anchor clamping sleeve and the tool anchor clamping sleeve in the middle PVC connecting pipe is both 1 / 3 of the length of the middle PVC connecting pipe; the insertion depth of the tool anchor clamping sleeve in the upper PVC guide pipe is 1 / 3 of the length of the upper PVC guide pipe.

9. The basalt fiber reinforcement anchor head structure according to claim 1, characterized in that: The basalt fiber reinforcement is inserted into the position where the tool anchor clamping sleeve and the upper PVC guide tube are connected.

10. A slope reinforcement construction method, characterized in that: The method is carried out using the basalt fiber reinforcement anchor head structure as described in any one of claims 1 to 9, and comprises the following steps: (1) Keeping the basalt fiber reinforcement in the center, the basalt fiber reinforcement anchor head structure is lowered into the drilled slope hole, so that the lower PVC guide pipe is completely inserted into the slope hole, and then the grouting material is injected into the slope hole to play the role of drilling anchoring; (2) The basalt fiber reinforcement anchor head structure exposed outside the drilled hole of the slope is passed through the through-hole jack, the working anchor is perpendicular to the basalt fiber reinforcement and is located on the slope surface, and is clamped on the working anchor clamping sleeve, the tool anchor is clamped on the tool anchor clamping sleeve, and the working anchor and the tool anchor are against the through-hole jack; (3) Starting the through-hole jack to apply prestress, and the two ends of the through-hole jack respectively press against the working anchor and the tool anchor to perform graded tensioning; after the tensioning is completed, the tool anchor and the through-hole jack are removed, and the working anchor is kept clamping the working anchor clamping sleeve; the strain gauge at the anchor head end monitors the stress and deformation of the basalt fiber reinforcement in the working anchor, and the strain gauge at the free end monitors the stress and deformation of the basalt fiber reinforcement in the slope borehole; (4) using a cutting machine to cut off the middle PVC connecting pipe at the cutting section position on the middle PVC connecting pipe; (5) Pour concrete at the remaining anchor head structure outside the slope to form a concrete protection pier to protect the working anchor and the remaining part of the anchor head structure.

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