阅读说明：本技术 一种库岸边坡玄武岩纤维筋一体化锚固结构及其监测系统 (Bank side slope basalt fiber rib integrated anchoring structure and monitoring system thereof ) 是由 代贞伟 周盛涛 张彦君 付小林 叶润青 郭进军 杜志刚 于 2021-07-26 设计创作，主要内容包括：本发明提供一种库岸边坡玄武岩纤维筋一体化锚固结构及其监测系统,包括：多根玄武岩纤维锚固筋,每一玄武岩纤维锚固筋包括多根相互粘接的玄武岩纤维筋、下钢套管、上钢套管、以及与上钢套管上部粘接且与玄武岩纤维筋对中的钢绞线,其中每一玄武岩纤维筋内部粘合有光栅阵列温度、应力、振动传感光缆；布设于锚固钻孔内壁层理、节理和软弱夹层等结构面处的多块抗剪砖；设置于锚固钻孔底部的浇筑底座,玄武岩纤维锚固筋的下钢套管浇筑于浇筑底座内、上钢套管设置于锚固钻孔内；以及设置于浇筑底座上部的锚固段。本发明的有益效果：精准确定了锚固钻孔中的弱面分布位置,提高了锚固结构的抗剪性能；监测系统可对锚固结构进行长期自动化监测。(The invention provides a bank slope basalt fiber rib integrated anchoring structure and a monitoring system thereof, wherein the bank slope basalt fiber rib integrated anchoring structure comprises: each basalt fiber anchoring rib comprises a plurality of basalt fiber ribs which are mutually bonded, a lower steel sleeve, an upper steel sleeve and a steel strand which is bonded with the upper part of the upper steel sleeve and is aligned with the basalt fiber ribs, wherein a grating array temperature, stress and vibration sensing optical cable is bonded inside each basalt fiber rib; a plurality of shear resistant bricks distributed on the structural surfaces of the inner wall bedding, joints, soft interlayers and the like of the anchoring drill hole; the lower steel sleeve of the basalt fiber anchoring rib is poured in the pouring base, and the upper steel sleeve is arranged in the anchoring drill hole; and the anchoring section is arranged at the upper part of the pouring base. The invention has the beneficial effects that: the distribution positions of the weak surfaces in the anchoring drill holes are accurately determined, and the shearing resistance of the anchoring structure is improved; the monitoring system can carry out long-term automatic monitoring to the anchoring structure.)

1. The utility model provides a bank side slope basalt fiber muscle integration anchor structure which characterized in that includes:

each basalt fiber anchoring rib comprises a plurality of basalt fiber ribs which are mutually bonded, a lower steel sleeve which is bonded with the lower end of each basalt fiber rib, an upper steel sleeve which is bonded with the upper end of each basalt fiber rib, and a steel strand which is bonded with the upper part of the upper steel sleeve and is aligned with the basalt fiber ribs, wherein a grating array temperature sensing optical cable, a grating array stress sensing optical cable and a grating array vibration sensing optical cable are bonded in each basalt fiber rib;

a plurality of shear resistant bricks distributed on the inner wall structure surface of the anchoring drill hole;

and the lower steel sleeve of each basalt fiber anchoring rib is poured in the pouring base, and the upper steel sleeve is arranged in the anchoring drill hole.

And the anchoring section is arranged at the upper part of the pouring base and comprises a plurality of anchoring sleeves for the basalt fiber anchoring ribs to penetrate through and a high-strength concrete pouring layer poured between the anchoring sleeves.

2. The basalt fiber rib integrated anchoring structure for the bank slope as claimed in claim 1, wherein: and shear-resistant centering brackets are arranged in the anchoring drill holes at the elevations of the shear-resistant bricks, and a plurality of through holes for the basalt fiber anchoring ribs to pass through are formed in the shear-resistant centering brackets.

3. The basaltic fiber rib integrated anchoring structure for the bank side slope as claimed in claim 2, wherein: the anti-shearing centering support is disc-shaped, the through holes are uniformly distributed on the anti-shearing centering support, and two ends of each through hole extend outwards to form a wrapping structure.

4. The basalt fiber rib integrated anchoring structure for the bank slope as claimed in claim 1, wherein: the upper end of each lower steel sleeve is spliced with the anchor ring, and the anchor ring is embedded in the upper part of the pouring base.

5. The basalt fiber rib integrated anchoring structure for the bank slope as claimed in claim 1, wherein: and a plurality of centering supports arranged at intervals are arranged in the anchoring drill hole along the axial direction of the anchoring drill hole, and all basalt fiber anchoring ribs penetrate through the centering supports.

6. The basalt fiber rib integrated anchoring structure for the bank slope as claimed in claim 1, wherein: the anchor plate comprises an anchor base plate arranged at the position of an anchor drilling hole, an organic clamping piece inserted in a through hole of the anchor base plate, an upper base plate arranged at the upper end of the organic clamping piece, and a concrete anchor pier poured outside the anchor base plate, wherein each steel strand runs through the anchor base plate and is poured in the concrete anchor pier, and each steel strand extends out of the concrete anchor pier.

7. The basalt fiber rib integrated anchoring structure for the bank slope as claimed in claim 1, wherein: the system further comprises a drilling full-hole wall imaging system, wherein the drilling full-hole wall imaging system is used for acquiring images in the anchoring drilling hole so as to determine the position of the structural surface.

8. The basalt fiber rib integrated anchoring structure for the bank slope as claimed in claim 1, wherein: the surface of the bonding part of the basalt fiber bars and the upper steel sleeve and the lower steel sleeve is subjected to sand blasting, the surface of the bonding part of the steel strands and the upper steel sleeve is subjected to nicking treatment or sand blasting, and internal threads are arranged on the inner walls of the upper steel sleeve and the lower steel sleeve.

9. The monitoring system of the basalt fiber rib integrated anchoring structure for the bank slope according to any one of claims 1 to 9, wherein: the device comprises a data acquisition module, wherein the data acquisition module is respectively connected with each grating array temperature sensing optical cable, each grating array stress sensing optical cable and each grating array vibration sensing optical cable, prestress is applied to basalt fiber anchoring ribs through the steel stranded wires, and the data acquisition module is used for acquiring temperature, stress and vibration data of each basalt fiber rib after prestress is applied.

10. The monitoring system of the basalt fiber rib integrated anchoring structure for the bank slope according to claim 10, wherein: the data acquisition module comprises a fiber grating demodulator, an automatic data acquisition system and a GPRS data transmission system, wherein the fiber grating demodulator is respectively connected with a grating array temperature sensing optical cable, a grating array stress sensing optical cable and a grating array vibration sensing optical cable in each basalt fiber rib, the automatic data acquisition system is respectively connected with the fiber grating demodulator and the GPRS data transmission system, and the GPRS data transmission system is connected with a bank slope monitoring and early warning terminal.

Technical Field

The invention relates to the technical field of geological disaster prevention and control of reservoir banks, in particular to a bank side slope basalt fiber rib integrated anchoring structure and a monitoring system thereof.

Background

The steel anchor rope that reservoir area canyon bank slope hydro-fluctuation belt was consolidated at present commonly uses anchors, but reservoir area hydro-fluctuation belt often receives dry and wet circulation effect, and traditional steel anchor rope is easy to be corroded, and the health condition of anchor structure under the long-time cyclic variation condition of water level is difficult to monitor, and this brings certain safety risk for the bank slope. At the present stage, the appearance of a large number of novel fiber reinforced composite anchor rods (cables) provides a new idea for reinforcing the hydro-fluctuation belt of the bank slope. The tensile strength of the basalt fiber reinforcement is greater than 1.1GPa, the density of the basalt fiber reinforcement is 1/3-1/4 of a steel bar, and the basalt fiber reinforcement has the advantages of good corrosion resistance, high stability, low raw material cost and the like, and is a green and environment-friendly light anchor cable manufacturing material. However, the basalt fiber reinforcement has poor shear strength and is easy to break due to the shearing force.

At the present stage, researchers pay more attention to the bonding effect of basalt fiber ribs and a concrete medium, and a large-tonnage anchoring structure system which can be practically applied to a bank side slope hydro-fluctuation belt protection structure and a corresponding anchoring structure health monitoring system are not developed yet. In order to meet the anchoring requirement of the reservoir bank side slope hydro-fluctuation belt in the canyon region and improve the shearing resistance of the basalt fiber rib anchor cable anchoring structure, it is necessary to develop a large-tonnage basalt fiber anchoring structure and an anchoring structure health automatic monitoring system which can be practically applied to the anchoring of the reservoir bank side slope hydro-fluctuation belt.

Disclosure of Invention

In view of this, in order to realize design of a large-tonnage basalt fiber anchoring structure for anchoring a bank slope hydro-fluctuation belt and automatic monitoring of health of the anchoring structure, the embodiment of the invention provides a bank slope basalt fiber rib integrated anchoring structure and a monitoring system thereof.

The embodiment of the invention provides a bank slope basalt fiber rib integrated anchoring structure, which comprises:

each basalt fiber anchoring rib comprises a plurality of basalt fiber ribs which are mutually bonded, a lower steel sleeve which is bonded with the lower end of each basalt fiber rib, an upper steel sleeve which is bonded with the upper end of each basalt fiber rib, and a steel strand which is bonded with the upper part of the upper steel sleeve and is aligned with the basalt fiber ribs, wherein a grating array temperature sensing optical cable, a grating array stress sensing optical cable and a grating array vibration sensing optical cable are bonded in each basalt fiber rib;

a plurality of shear resistant bricks distributed on the inner wall structure surface of the anchoring drill hole;

the lower steel sleeve of each basalt fiber anchoring rib is poured in the pouring base, and the upper steel sleeve is arranged in the anchoring drill hole;

and the anchoring section is arranged at the upper part of the pouring base and comprises a plurality of anchoring sleeves for the basalt fiber anchoring ribs to penetrate through and a high-strength concrete pouring layer poured between the anchoring sleeves.

Furthermore, shear-resistant centering brackets are arranged in the anchoring drill holes and positioned at the elevations of the shear-resistant bricks, and a plurality of through holes for the basalt fiber anchoring ribs to pass through are formed in the shear-resistant centering brackets.

Furthermore, the anti-shearing centering support is disc-shaped, the through holes are uniformly distributed on the anti-shearing centering support, and two ends of each through hole extend outwards to form a wrapping structure.

Furthermore, the steel pipe casting device further comprises anchor rings, the upper ends of the lower steel sleeves are connected with the anchor rings in an inserting mode, and the anchor rings are embedded in the upper portion of the pouring base.

Furthermore, a plurality of centering brackets arranged at intervals are arranged in the anchoring drill hole along the axial direction of the anchoring drill hole, and all basalt fiber anchoring ribs penetrate through the centering brackets.

Furthermore, the steel strand wires penetrate through the anchoring backing plate and are poured in the concrete anchor pier, and each steel strand wire extends out of the concrete anchor pier.

Further, the system comprises a borehole full-hole wall imaging system, wherein the borehole full-hole wall imaging system is used for acquiring images in the anchoring borehole so as to determine the position of the structural surface.

Furthermore, the surface of the bonding part of the basalt fiber bars and the upper steel sleeve and the lower steel sleeve is subjected to sand blasting, the surface of the bonding part of the steel strands and the upper steel sleeve is subjected to nicking treatment or sand blasting, and internal threads are arranged on the inner walls of the upper steel sleeve and the lower steel sleeve.

The basalt fiber rib integrated anchoring structure for the bank side slope has the beneficial effects that: the basalt fiber rib material which is environment-friendly, corrosion-resistant and good in tensile property is adopted, and the defect that a traditional steel anchor cable is easy to rust and lose efficacy when the bank slope is anchored is overcome. Before the basalt fiber anchoring structure is installed, the weak surface distribution position in an anchoring drill hole is accurately determined, the high-strength wall-attached shear-resistant brick reinforcing hole wall is accurately arranged at the structural surface positions such as the internal bedding, the joints and the soft interlayer of the anchoring drill hole, the basalt fiber rib of the built-in grating array temperature sensing optical cable, the grating array stress sensing optical cable and the grating array vibration sensing optical cable is adopted to anchor the bank slope falling zone, each beam of basalt fiber anchoring rib at the corresponding elevation position of each structural surface is separated by the high-strength shear-resistant centering support, and the shear resistance of the anchoring structure is greatly improved. After the prestress is applied, the basalt fiber ribs apply compressive stress to the anchor ring through the lower steel sleeve, the anchor ring further applies pressure to the high-strength concrete of the anchoring section, the structure makes full use of the characteristic that the high-strength concrete has strong compressive property, and the anchoring capacity of the anchoring structure is greatly improved.

The embodiment of the invention also provides a monitoring system of the bank slope basalt fiber rib integrated anchoring structure, which comprises a data acquisition module, wherein the data acquisition module is respectively connected with each grating array temperature sensing optical cable, each grating array stress sensing optical cable and each grating array vibration sensing optical cable, prestress is applied to the basalt fiber anchoring ribs through the steel stranded wires, and the data acquisition module is used for acquiring temperature, stress and vibration data of each basalt fiber rib after prestress is applied.

Further, the data acquisition module comprises a fiber grating demodulator, an automatic data acquisition system and a GPRS data transmission system, wherein the fiber grating demodulator is respectively connected with a grating array temperature sensing optical cable, a grating array stress sensing optical cable and a grating array vibration sensing optical cable in each basalt fiber rib, the automatic data acquisition system is respectively connected with the fiber grating demodulator and the GPRS data transmission system, and the GPRS data transmission system is connected with the bank slope monitoring and early warning terminal.

The beneficial effects brought by the monitoring system of the basalt fiber rib integrated anchoring structure for the bank side slope are as follows: the grating array sensing optical cable arranged inside the basalt fiber rib can accurately test the temperature, stress and vibration response characteristics inside the anchoring structure in a long time range, the monitoring system can automatically monitor the anchoring structure for a long time, and the advanced anchoring structure monitoring system is green, environment-friendly, economical, reliable and high in automation monitoring degree.

Drawings

FIG. 1 is a schematic diagram of an integrated anchoring structure of basalt fiber bars on a bank slope and a monitoring system thereof;

FIG. 2 is a schematic view of an anchoring structure of the basalt fiber anchoring rib at the orifice of the anchoring borehole in FIG. 1;

FIG. 3 is a schematic cross-sectional view of a single basalt fiber tendon;

FIG. 4 is a schematic cross-sectional view at A in FIG. 2;

FIG. 5 is a schematic cross-sectional view at B in FIG. 2;

FIG. 6 is a cross-sectional schematic view of the shear resistant centering bracket 5 of FIG. 1;

FIG. 7 is a cross-sectional schematic view of the centering bracket 6 of FIG. 1;

FIG. 8 is a cross-sectional schematic view of the anchor ring 7 of FIG. 1;

fig. 9 is a schematic cross-sectional view of the anchoring section 13 in fig. 1.

In the figure: 1-basalt fiber anchoring rib, 101-basalt fiber rib, 101 a-grating array temperature sensing optical cable, 101 b-grating array stress sensing optical cable, 101 c-grating array vibration sensing optical cable, 102-upper steel sleeve, 103-lower steel sleeve, 104-steel stranded wire, 105-steel adhesive, 2-shear resistant brick, 3-pouring base, 4-data acquisition module, 401-fiber grating demodulator, 402-automatic data acquisition system, 403-GPRS data transmission system, 404-FC/PC jumper, 5-shear resistant centering bracket, 501-perforation, 502-wrapping structure, 503-grouting hole, 6-centering bracket, 601-centering hole, 602-grouting hole, 7-anchor ring, 701-anchoring hole, 701-grating array temperature sensing optical cable, 3-grating array stress sensing optical cable, 3-grating array vibration sensing optical cable, 3-automatic data acquisition system, 403-GPRS data transmission system, 404-FC/PC jumper, 5-shear resistant centering bracket, 501-perforation, 502-wrapping structure, 503-grouting hole, 6-centering bracket, 601-centering hole, 602-grouting hole, 7-anchor ring, 701-anchoring hole, and the like, 702-grouting holes, 8-anchoring backing plates, 9-concrete anchoring piers, 10-structural surfaces, 11-organic clamping pieces, 12-anchoring drill holes, 13-anchoring sections, 1301-anchoring sleeves, 1302-high-strength concrete layers and 14-upper backing plates.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.

Referring to fig. 1, an embodiment of the present invention provides a bank slope basalt fiber rib integrated anchoring structure and a monitoring system thereof.

The embodiment of the invention provides a bank slope basalt fiber rib integrated anchoring structure which comprises a plurality of basalt fiber anchoring ribs 1, a plurality of shear-resistant bricks 2, a pouring base 3 and an anchoring section 13.

Specifically, referring to fig. 2, 4 and 5, the basalt fiber anchoring bar 1 mainly comprises a plurality of basalt fiber bars 101, a lower steel sleeve 103, an upper steel sleeve 102 and steel strands 104. The basalt fiber ribs 101 are mutually bonded and bundled, then the lower ends of the basalt fiber ribs 101 are inserted into the lower steel sleeve 103 and are bonded and connected through the sticky steel glue 105, the upper ends of the basalt fiber ribs 101 are inserted into the upper steel sleeve 102 and are bonded and connected through the sticky steel glue 105, meanwhile, the steel strands 104 are inserted from the upper end of the upper steel sleeve 102 and are aligned with the bundled basalt fiber ribs 101, and then the steel strands are bonded and fixed through the sticky steel glue 105. Here, the steel strands 104 and the basalt fiber strands 101 each occupy 1/2 of the upper jacket tube 102.

Preferably, the surface of the bonding part of the basalt fiber reinforcement 101 and the upper steel sleeve 102 and the lower steel sleeve 103 is subjected to sand blasting, the surface of the bonding part of the steel strand 104 and the upper steel sleeve 102 is subjected to indentation treatment or sand blasting, and the inner walls of the upper steel sleeve 102 and the lower steel sleeve 103 are provided with internal threads, so that friction can be increased, and the strength of the connecting part can be guaranteed.

Referring to fig. 3, a grating array temperature sensing optical cable 101a, a grating array stress sensing optical cable 101b, and a grating array vibration sensing optical cable 101c are bonded inside each of the basalt fiber bars 101. The three optical cables are bonded with basalt fiber filaments into a whole through organic materials when the basalt fiber ribs 101 are bonded and formed, and thus complete basalt fiber ribs 101 are formed.

The shear bricks 2 are arranged at the development positions of structural planes 10 such as inner wall layer arrangement, joint and weak interlayer of the anchoring drill hole 12, and are specifically arranged at intervals along the height direction of the anchoring drill hole 12. The shear resistant bricks 2 are made of high-strength organic materials, and the arc length and the wall-adhering height of the shear resistant bricks 2 can be determined according to the width and the height of a cutting anchoring drill hole 12 of a structural plane 10 such as a bedding, a joint, a weak interlayer and the like.

The method for the adherent arrangement of the shear bricks 2 on the inner wall of the anchoring drill hole 12 comprises the following steps: before installation, a layer of organic material which is the same as the preparation material of the shear-resistant brick is coated on the outer side surface of the shear-resistant brick 2, when the high-strength organic material on the surface of the shear-resistant brick 2 is to be solidified and not solidified, the shear-resistant brick 2 is suspended and is lowered into the anchoring drill hole 12 to be in a development position of a structural surface 10 such as a corresponding layer, joint and weak interlayer, and the like, and the non-solidified material on the outer side of the shear-resistant brick 2 faces the structural surface 10 such as the layer, joint and weak interlayer in the anchoring drill hole 12. And then, a packer is put into the anchoring borehole 12, so that a packer rubber cylinder and the shear bricks 2 are positioned at the same elevation, the expansion of the packer rubber cylinder is controlled, the shear bricks 2 are tightly attached to the wall of the anchoring borehole 12, after the shear bricks 2 are tightly bonded to the wall of the anchoring borehole 12, the contraction of the packer rubber cylinder is controlled, the packer is taken out, and the arrangement of the shear bricks 2 is completed. The step is repeated, and all the shear bricks 2 can be laid.

In order to accurately determine the weak surface distribution position in the anchoring drill hole 12, namely the development elevation and the development azimuth of the structural surface 10 such as the wall layer, the joints, the weak interlayer and the like in the anchoring drill hole 12, the basalt fiber rib integrated anchoring structure for the bank side slope is further provided with a drilling full-hole-wall imaging system. The 360-degree hole wall image of the anchoring drill hole 12 is obtained through the drill hole full-hole-wall imaging system, so that the development positions of the structural surfaces 10 such as the bedding, the joints and the weak interlayers can be determined, the high-strength wall-attached shear bricks 2 are accurately arranged at the development positions of the structural surfaces 10 such as the bedding, the joints and the weak interlayers in the anchoring drill hole 12, and the basalt fiber anchoring ribs 101 are prevented from bearing large shearing force.

Further, referring to fig. 1 and 6, a shear-resistant centering bracket 5 is disposed in the anchoring borehole 12 at the elevation of each shear-resistant brick 2, and a plurality of through holes 501 for each basalt fiber anchoring bar 1 to pass through are disposed on the shear-resistant centering bracket 5. The shearing-resistant centering bracket 5 is arranged at the elevation of each shearing-resistant brick 2, wherein the shearing-resistant centering bracket 5 is in a disc shape and is made of an organic material with strong shearing resistance, the through holes 501 are uniformly distributed on the shearing-resistant centering bracket 5, and two ends of each through hole 501 extend outwards to form a wrapping structure 502. The plurality of basalt fiber bars 101 of each basalt fiber anchoring bar 1 penetrate through the same through hole 501 of the shearing-resistant centering bracket 5, and are limited in the same pair of through holes 501, so that the plurality of basalt fiber anchoring bars 1 are prevented from being mutually wound when entering the anchoring drill hole 12.

In addition, referring to fig. 1 and 7, a plurality of centering brackets 6 are arranged at intervals in the anchoring borehole 12 along the axial direction of the anchoring borehole 12, each centering bracket 6 is arranged at a portion of the anchoring borehole 12 located outside the structural plane 10 such as the bedding, the joints and the weak sandwich, the centering brackets 6 are also disc-shaped, a plurality of centering holes 601 are arranged on the centering brackets 6, and each basalt fiber anchoring rib 1 passes through each centering hole 601 on each centering bracket 6, so as to prevent the basalt fiber anchoring ribs 1 from being intertwined with each other.

The pouring base 3 is arranged at the bottom of the 12 holes of the anchoring drill hole, the lower steel sleeve 103 of each basalt fiber anchoring rib 1 is poured in the pouring base 3, meanwhile, each basalt fiber anchoring rib 1 penetrates through an anchor ring 7, and the lower portion of the anchor ring 7 is connected with the upper end of each lower steel sleeve 103 in an inserting mode. The pouring base 3 is poured through concrete in advance, and the concrete pouring method comprises the steps of firstly, putting solid cylindrical cast iron below the bottom of the anchor drilling hole 12, enabling the diameter of the cylindrical cast iron to be consistent with that of the anchor ring 7, enabling the height of the cylindrical cast iron to be equal to the distance between the designed position of the upper surface of the anchor ring 7 and the bottom surface of the anchor drilling hole 12, pouring slurry into the anchor drilling hole 12 until the height of a grouting surface is consistent with that of the upper end surface of the cylindrical cast iron, and taking out the cylindrical cast iron after the slurry reaches an initial setting state.

Referring to fig. 1 and 8, the anchor ring 7 is disc-shaped, and a plurality of anchor holes 701 are formed in the anchor ring, the upper end of each lower steel casing 103 is respectively inserted into each of the anchor holes 701 of the anchor ring 7, the anchor holes 701 are stepped holes, and each basalt fiber anchor bar 1 passes through the anchor hole 701. Then, the anchor ring 7 is embedded in the upper part of the pouring base 3, so that the lower steel sleeves 103 are arranged in the pouring base 3, concrete is poured in the pouring base 3, and the lower steel sleeves 103 are fixed after the concrete is solidified. Here, grouting holes 702, 602, 503 are respectively provided on the anchor ring 7, the centering bracket 6 and the shear centering bracket 5, so as to perform grouting in the casting base 3.

In addition, the upper steel sleeve 102 of each of the basalt fiber anchoring bars 1 is disposed inside the anchoring borehole 12. Specifically, an anchoring backing plate 8, an organic clamping piece 11 inserted in a through hole of the anchoring backing plate 8, an upper backing plate 14 arranged at the upper end of the organic clamping piece, and a concrete anchor pier 9 poured outside the anchoring backing plate 8 are arranged at the orifice of the anchoring drilling hole 12, the organic clamping piece 11 is of a cone structure, each steel strand 104 penetrates through the organic clamping piece 11 and is poured in the concrete anchor pier 9, and each steel strand 104 extends out of the concrete anchor pier 9. The part of the steel strand 104, which exceeds the concrete anchor pier 9, is sheared after prestress is applied to the basalt fiber anchoring bar 1, and the lateral pressure generated when the prestress is applied is directly applied to the steel strand 104, so that the basalt fiber bar 101 is prevented from being snapped by the organic clamping piece 11 when the prestress is applied.

Referring to fig. 1 and 9, the anchoring section 13 includes a plurality of anchoring sleeves 1301 through which the basalt fiber anchoring bars 1 pass, and a high-strength concrete casting layer 1302 between the anchoring sleeves 1301. The anchoring sleeve can be a hollow PVC sleeve or a basalt fiber sleeve, the basalt fiber anchoring rib 1 is arranged in the anchoring section 13 and is arranged in the anchoring sleeve 1301, the basalt fiber anchoring rib 1 is not bonded with the anchoring sleeve 1301, and the problem of deformation incompatibility between the basalt fiber anchoring rib 1 and the high-strength concrete layer 1302 in the anchoring section can be effectively solved. After the prestress is applied, the tensile stress applied to the anchoring structure can be converted into the compressive stress applied to the high-strength concrete layer 1302 of the anchoring section 13 through the anchor ring 7, so that the tensile capability of the basalt fiber anchoring rib 1 and the compressive property of the high-strength concrete layer 1302 can be exerted to the maximum extent, and the anchoring performance of the anchoring structure is greatly improved. Meanwhile, the arrangement of the anchoring sleeve 1301 can prevent the basalt fiber anchoring bars 1 from intertwining.

The embodiment of the invention also provides a monitoring system of the bank slope basalt fiber rib integrated anchoring structure, which comprises a data acquisition module 4, wherein the data acquisition module 4 is used for acquiring the temperature, stress and vibration data of each basalt fiber rib 101 after prestress is applied. Specifically, the data acquisition module 4 includes a fiber grating demodulator 401, an automatic data acquisition system 402, and a GPRS data transmission system 403, where the fiber grating demodulator 401 is connected to a grating array temperature sensing optical cable 101a, a grating array stress sensing optical cable 101b, and a grating array vibration sensing optical cable 101c in each basalt fiber rib 101 through an FC/PC jumper 404, the automatic data acquisition system 402 is connected to the fiber grating demodulator 401 and the GPRS data transmission system 403, and the GPRS data transmission system 403 is connected to a bank side slope monitoring and early warning terminal, and transmits temperature, stress, and vibration data of each basalt fiber rib 101 to the bank side slope monitoring and early warning terminal.

When the basalt fiber bar integrated anchoring structure and the monitoring system thereof for the bank side slope are installed and distributed, firstly, the elevations and the orientations of all structural surfaces 10 such as bedding, joints, weak interlayers and the like in the anchoring drill hole 12 are determined, the shear resistant bricks 2 are distributed at corresponding positions, and then, the pouring base 3 is formed by pouring at the bottom of the anchoring drill hole 12. Then, assembling the basalt fiber anchoring ribs 1, the shearing-resistant centering brackets 5, the centering brackets 6, the anchoring sleeves 1301 and the anchor rings 7, putting the assembled basalt fiber anchoring ribs into the anchoring drill holes 12, putting the lower steel sleeves 103 at the bottoms of the basalt fiber anchoring ribs 1 into the pouring base 3, then performing grouting pouring inside the pouring base 3, and pouring the inside of the pouring base 3 and the pouring base 3 to form a complete cylinder. After the initial setting of the concrete in the pouring base 3 is completed, the high-strength concrete is adopted to pour the gaps between the anchoring sleeves 1301, the concrete is solidified to form a high-strength concrete layer 1302, and the anchoring section 13 is molded. And then arranging the anchoring base plate 8, the organic clamping piece 11 and the upper base plate 14 in the hole opening of the anchoring drill hole 12, and then applying prestress to each basalt fiber anchoring rib 1, specifically, adopting a small-sized punching jack to stretch the steel strands 104 of a single basalt fiber anchoring rib 1 one by one, and after stretching to 50% of the target prestress, adopting a large-sized punching jack to integrally stretch all the steel strands 104 of the basalt fiber anchoring structure, thereby completing prestress application. And after the prestress is applied, cutting off the redundant steel strands 104, and pouring concrete to form a concrete anchor pier 9 so as to finish the anchoring of the basalt fiber anchoring structure.

And finally, connecting each grating array temperature sensing optical cable 101a, each grating array stress sensing optical cable 101b and each grating array vibration sensing optical cable 101c to the data acquisition module 4 through an FC/PC jumper 404 for data acquisition, and automatically transmitting the temperature, stress and vibration states of the basalt fiber anchoring structure to a monitoring and early warning command center in real time, so as to realize automatic health monitoring of the basalt fiber anchoring structure.

In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.

The features of the embodiments and embodiments described herein above may be combined with each other without conflict.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.