A slope greening geocell and a method of using the same

Abstract

The present application relates to the field of slope protection and ecological restoration, in particular to a kind of slope greening geocell, including geocell body and anchoring rod;The body is formed by strip interlaced welding and pulling apart to form continuous cavity, strip is provided with root system induction hole and torsion effect and is lifted up and is prevented soil tongue;Its core is that strip two ends are separately provided with male tooth edge and female groove edge, when adjacent cell is spliced, male tooth is pulled back through female groove, so that overhanging tooth is formed into self-locking structure of stop-retreating engagement by passing lock shoulder;The present application eliminates the traditional artificial point-by-point binding process, utilizes the self-locking structure to disperse tensile stress to avoid local tearing, and can be passively compliant to undulating uneven terrain and occur moderate deformation, effectively avoid local suspension, improve the overall structural stability.

Description

Technical Field

[0001] This invention relates to the field of slope protection and ecological restoration, specifically to a geocell for slope greening and its application method. Background Technology

[0002] In slope greening and protection projects, geocells are often laid on undulating slopes to support imported soil and form a substrate for plant growth. To retain soil and water on slopes, existing solutions generally use traditional honeycomb geocells, which are laid out laterally by hand and then connected point by point using independent connectors or binding straps, followed by layered soil covering. Although this solution has a certain protective capacity on gentle and homogeneous slopes, its sheet structure lacks active soil retention and water flow intervention mechanisms. Downward water flow can easily erode vertically along the pores, forming fine gullies and causing local soil loss. At the same time, the splicing of pores relies heavily on manual point-by-point binding, which is a complex construction process and also causes the tension between adjacent pores to concentrate near the local pore locations. Long-term stress can easily induce end tearing. In addition, the traditional integral structure is difficult to passively adapt to uneven terrain such as protruding rocks or shallow pits, which can easily lead to local suspension and reduce overall stability, making it difficult to support long-term soil and water conservation and vegetation reconstruction under heavy rainfall and complex terrain conditions.

[0003] Therefore, optimizing the tensioning and splicing operation and stress distribution of geocells, and improving their ability to disperse and weaken concentrated water flow on slopes and their adaptability to terrain have become urgent technical problems to be solved. Summary of the Invention

[0004] To solve the above-mentioned technical problems, the present invention provides a geocell for slope greening and its application method, specifically adopting the following technical solution: On one hand, the present invention provides a geocell for slope greening, comprising: Geocell body and anchor rods; The geocell body is composed of strips arranged in parallel along the left and right directions; Adjacent strips are connected at intervals along the length direction through a welding zone, and adjacent rows of welding zones are staggered, so that the geocell body is laterally stretched to form a continuous cavity. The strip has a retaining tongue cut into the middle. After the retaining tongue is cut, the root connection is retained to the side. The root connection line is parallel to the length direction of the strip, and the free edges are uniformly facing the same side of the geocell body. In the folded state, the retaining tongue lies flat against the plane of the strip; when pulled open laterally, the retaining tongue is raised as the strip twists. The strip is provided with root induction holes staggered on the upper and lower sides of the retaining tongue; the two ends of the strip are provided with male tooth edge and female groove edge respectively, the male tooth edge is punched with outward protruding teeth at equal intervals, and the female groove edge is provided with relief holes and locking shoulders corresponding to the outward protruding teeth; When adjacent geocell bodies are spliced, the male tooth edge of the front geocell body passes through the female groove edge of the adjacent rear geocell body and is pulled back, and the outward protruding tooth crosses the locking shoulder and abuts against the locking shoulder.

[0005] Preferably, the surface of the strip is embossed to form a longitudinal main pattern and a diagonal secondary pattern; wherein, the longitudinal main pattern extends along the length direction of the strip, and the diagonal secondary pattern intersects with the longitudinal main pattern to form a fishbone-shaped guide texture.

[0006] Preferably, the root induction hole is elongated along the height direction of the strip; wherein the long side of the root induction hole is inclined to the same predetermined side of the adjacent continuous cavity, and the edge of the root induction hole retains a reverse slope cutting edge towards the inside of the continuous cavity; a continuous rib is left between the root induction hole and the retaining tongue; wherein the periphery of the retaining tongue retains an opening, and the two ends of the root connecting line have arc transition areas.

[0007] Preferably, the front end of the protruding tooth is rounded and the root is beveled; when the male tooth is pulled back, the beveled root of the tooth abuts against the locking shoulder.

[0008] Preferably, stress-relief notches are formed at both ends of the welding zone; wherein, the stress-relief notches are arc-transition cuts and are located outside the welding boundary of the welding zone; the weldless area of ​​the strip between adjacent welding zones forms a compliant narrow strip; wherein, the embossing height of the compliant narrow strip is lower than the rest of the strip, and the compliant narrow strip is located between adjacent retaining tongues along the length of the strip.

[0009] Preferably, the anchor rod includes a steel rod body and a pressure holder head; the steel rod body is a straight rod; wherein, the lower end of the steel rod body is machined into a conical tip, and the upper end is bent to form a hook; the pressure holder head is a disc-shaped pressure plate; wherein, the central hole of the pressure holder head is interference-fitted with the steel rod body, and the pressure holder head is located below the hook.

[0010] On the other hand, the present invention further proposes a method for using geocells for slope greening, comprising the following steps: S1: Divide the slope to be treated into three sections: the slope top stabilization section, the middle confluence section, and the slope toe energy dissipation section. Each section is then designated as a target area. The slope angle, maximum elevation difference, maximum hourly rainfall, fine particle mass percentage, and target plant root type of each target area are then obtained. S2: Based on historical survey data and meteorological data of the slope to be treated, set preset slope angle threshold, preset rainfall intensity threshold, preset particle size threshold, and preset undulation threshold; determine the functional expansion degree based on the parameters obtained in step S1; when the slope angle value is greater than the preset slope angle threshold, the maximum hourly rainfall is greater than the preset rainfall intensity threshold, and the fine particle mass percentage is less than the preset particle size threshold, reduce the lateral expansion degree of the geocell body in the target area; when the slope angle value is less than or equal to the preset slope angle threshold, the maximum elevation difference is greater than the preset undulation threshold, and the target plant root type matches the lateral expansion type, increase the lateral expansion degree; when the above conditions are not met, maintain the preset foundation expansion degree; S3: Perform orientation determination and splicing determination to ensure that the free edges of the retaining tongues on all the strips face the top of the slope. If splicing is performed along the same height direction, the male tooth edge is preferably located on the upstream side of the incoming water and the female groove edge is preferably located on the downstream side of the incoming water. If splicing is performed along the slope direction, the female groove edge of the geocell body located on the upslope position is preferably matched with the male tooth edge of the geocell body located on the downslope position. S4: Perform zoned progressive tensioning. First, unfold the continuous cavity at the top of the slope and complete the initial fixation with the anchor rod. Then, unfold it row by row along both sides and downwards. Lock it segment by segment by locking it with the male tooth edge and the female groove edge to the preset position. Then, perform diagonal alternating tensioning on the middle area. Finally, process the energy dissipation section at the toe of the slope. S5: Perform layered backfilling. For the slope stabilization section at the top of the slope, first fill with coarse-grained base layer and then cover with plant growth soil. For the middle confluence section, first fill with skeleton soil below the retaining tongue and then lay plant growth soil on top. For the energy dissipation section at the toe of the slope, first lay drainage base layer and then cover with plant growth soil.

[0011] Preferably, in step S4, the opening density correction of the retaining tongue is performed: in the middle confluence section, the adjacent columns of continuous cavities are tensioned in a staggered manner so that the opening of the front column of continuous cavities is greater than the opening of the adjacent rear column of continuous cavities, and the retaining tongues are distributed in an alternating micro-step shape; in the slope stabilization section at the top of the slope and the energy dissipation section at the bottom of the slope, the opening of the adjacent continuous cavities is kept consistent. If there are protruding rocks on the surface of the target area, and the strip is suspended when it crosses the protruding rocks during the tensioning process, the tensioning degree of the adjacent continuous cavities at that location is relaxed, and the anchoring rod is added on the upstream side of the protruding rocks so that the strip tightly covers the surface of the protruding rocks.

[0012] Preferably, after step S5, the following steps are also included: S6: Perform on-site correction judgment, and after completing the backfilling and initial watering, obtain the slope water marks and soil surface deformation parameters; if continuous linear water marks appear in the target area and cross the preset number of continuous cavities, then release the preset locking of the male tooth edge and the female groove edge in the local area and pull it back to tighten the opening of the continuous cavities; if the soil in the target area is piled up above the retaining tongue and empty below, then loosen the preset locking; if the area near the root induction hole is exposed for a long time, then cover the surface of the area with fine-grained plant growth soil and maintain the original opening.

[0013] The advantages of this invention are: 1. This invention utilizes the male toothed edge and female grooved edge at both ends of the strip to extend the geocell laterally while the outer tooth crosses the locking shoulder and abuts against it. This self-locking structure eliminates the traditional tedious manual point-by-point binding, dispersing the tensile stress at the ends of adjacent strips across the overall width, avoiding concentrated tension that could induce tearing. At the same time, combined with the flexible narrow strip with a low embossing height in the weldless area, the geocell can passively adapt to uneven terrain and undergo gentle deformation, avoiding local suspension and significantly improving overall service stability.

[0014] 2. The fishbone-shaped flow-guiding texture formed by the interlacing of longitudinal main patterns and oblique secondary patterns on the surface of the geotextile strip of this invention can effectively disperse the concentrated runoff flowing down the slope into oblique lateral flow, weakening the vertical scouring kinetic energy of the water flow. Combined with the torsional effect generated when the geocells are pulled laterally, the retaining tongue in the middle of the geotextile strip automatically tilts up, forming a stepped retaining structure that blocks the slope crest. The two work together to achieve effective interception of downward soil particles and water flow intervention without adding any additional components, thus enhancing the performance of preventing soil loss. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Figure 1 This is a schematic diagram of the overall structure of the device; Figure 2 This is a schematic diagram of the device's strip structure; Figure 3 This is a schematic diagram of the device's anchor rod structure; Figure 4 This is a logic control flowchart of the method in the embodiments of the present invention.

[0016] In the diagram: 1. Geocell body; 2. Anchor rod; 11. Strip; 12. Welded zone; 13. Retaining tongue; 14. Root induction hole; 15. Male toothed edge; 16. Female groove edge; 17. Unloading notch; 18. Flexible narrow strip; 21. Steel rod body; 22. Pressure holder head. Detailed Implementation

[0017] The accompanying drawings are for illustrative purposes only and should not be construed as limiting the scope of this patent. To better illustrate this embodiment, some components in the drawings may be omitted, enlarged, or reduced, and do not represent the dimensions of the product. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted in the drawings. The technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0018] Example 1: Combination Figure 1 and Figure 2 As shown, a geocell for slope greening includes: Geocell body 1 and anchor rod 2; The geocell body 1 is composed of strips 11 arranged in parallel along the left and right directions; Adjacent strips 11 are connected at intervals along the length direction through welding zones 12, and adjacent rows of welding zones 12 are staggered, so that the geocell body 1 is laterally stretched to form a continuous cavity. A retaining tongue 13 is punched in the middle of the strip 11. After the retaining tongue 13 is cut, the root connection is retained to the side. The root connection line is parallel to the length direction of the strip 11, and the free edges are uniformly facing the same side of the geocell body 1. In the folded state, the retaining tongue 13 lies flat against the plane of the strip 11; when pulled open laterally, the retaining tongue 13 is raised as the strip 11 twists. The strip 11 has root induction holes 14 staggered on the upper and lower sides of the retaining tongue 13; the strip 11 has male tooth edge 15 and female groove edge 16 at both ends. The male tooth edge 15 has outward protruding teeth punched at equal intervals, and the female groove edge 16 has corresponding clearance holes and locking shoulders for the outward protruding teeth. When adjacent geocell bodies 1 are spliced, the male tooth edge 15 of the front geocell body 1 passes through the female groove edge 16 of the adjacent rear geocell body 1 and is pulled back, and the outward protruding tooth crosses the lock shoulder and abuts against the lock shoulder.

[0019] After the strip 11 is pulled laterally, the segments between adjacent welded areas 12 twist, and the retaining tongue 13 automatically lifts up under the combined action of its own weight and material rebound, forming a stepped retaining structure that blocks the side of the slope top. The beneficial effect of this embodiment is that the inherent twisting of the strip 11 during the expansion of the cell drives the retaining tongue 13 to open passively, thus achieving a three-dimensional retaining effect without adding independent attachments. The strip 11 has root induction holes 14 staggered above and below the retaining tongue 13 to form a guiding path for the roots to pass through the adjacent continuous holes. The strip 11 has male toothed edge 15 and female groove edge 16 at both ends. When the construction worker pulls open the geocell body 1, the male toothed edge 15 passes through the female groove edge 16 and is pulled back. The outward teeth cross the lock shoulder to form a back-locking engagement. The self-locking edge allows the splicing and tensioning actions to be completed in one step, eliminating the need for point-by-point binding. At the same time, it disperses the end stress of two adjacent cells to the entire width of the strip, avoiding the concentration of tension near local holes and improving service stability.

[0020] The surface of the strip 11 is embossed to form longitudinal main patterns and oblique secondary patterns; the longitudinal main patterns extend along the length of the strip 11, and the oblique secondary patterns intersect with the longitudinal main patterns to form a fishbone-shaped flow guide texture.

[0021] When the water film descending along the slope contacts the wall of the strip 11, the ridge of the longitudinal main pattern blocks the vertical downward path of the water flow, forcing the water flow to accumulate on both sides of the longitudinal main pattern; the oblique secondary pattern extends obliquely to both sides from the ridge of the longitudinal main pattern, and the edge of its ridge forms a guiding slope. The water flow accumulated on both sides of the longitudinal main pattern flows to the side due to gravity along the guiding slope of the oblique secondary pattern, thereby decomposing the originally concentrated linear runoff into multiple oblique lateral flows that deflect to both sides of the continuous cavity; This flow direction intervention mechanism weakens the cutting kinetic energy of a single water line on the fill at the edge of a continuous cavity, slows down the formation rate of fine grooves in the cavity, and enables the imported soil to obtain stable lateral constraint protection under heavy rainfall conditions, thereby enhancing the soil and water conservation capacity.

[0022] The root induction hole 14 is elongated along the height direction of the strip 11; the long side of the root induction hole 14 is inclined to the same preset side of the adjacent continuous cavity, and the edge of the root induction hole 14 retains a reverse slope cutting edge towards the inside of the continuous cavity; a continuous rib is left between the root induction hole 14 and the retaining tongue 13; the periphery of the retaining tongue 13 retains a slit, and the two ends of the root connection line retain an arc transition area.

[0023] The root induction hole 14 is designed as a narrow and elongated shape that is inclined along the height direction of the strip 11, with the long side inclined towards the downstream side of the adjacent continuous cavity; the edge of the hole retains a reverse slope cutting edge towards the inside of the continuous cavity, which forms a local water-retaining shadow zone after the strip 11 unfolds; when the root system crosses the strip 11, it preferentially extends along the reverse slope cutting edge, and mechanical gripping points are set at the edge of the hole to promote the root system to quickly pass through the adjacent cavity and form a cross-cavity entanglement; The elongated root induction hole 14, combined with the herringbone-shaped flow guide texture, allows the fine-particle filler to partially stay below the retaining tongue 13, and the water-retaining strip is concentrated near the slope cutting edge, improving the survival rate of plants in the early stage of rooting; the continuous ribs retained between the root induction hole 14 and the retaining tongue 13 ensure the overall tensile strength of the strip 11 after stretching. The retaining tongue plate 13 has a slit around its perimeter and an arc transition zone at both ends of the root connection line. This design eliminates stress concentration points during the twisting and lifting process of the plate strip 11 and prevents the root of the retaining tongue plate 13 from tearing under repeated tension and long-term earth pressure.

[0024] The front end of the protruding tooth is rounded, and the root of the tooth is beveled. When the male tooth edge is pulled back by 15, the bevel of the tooth root abuts against the locking shoulder.

[0025] The rounded end serves as a guide for the clearance hole that passes through the female groove edge 16, reducing the difficulty of alignment during on-site splicing. The root of the protruding tooth is set as an inclined surface. When the male tooth edge 15 passes through the female groove edge 16 and a pull-back action is applied, the inclined surface of the tooth root slides along the locking shoulder and crosses the edge of the locking shoulder. Under the action of material rebound force, it forms an interference fit with the locking shoulder. This self-locking fixing mechanism enables the male tooth edge 15 and the female groove edge 16 to have multi-position adjustment capabilities. Locking can be completed with a single pull. Moreover, the direction of force is consistent with the direction of anti-reverse, which enhances the ability to resist the sliding pull of the slope.

[0026] The two ends of the welding zone 12 are formed with stress relief notches 17; wherein, the stress relief notches 17 are arc transition cuts and are located outside the welding boundary of the welding zone 12; the unwelded area of ​​the strip 11 between adjacent welding zones 12 forms a compliant narrow strip 18; wherein, the embossing height of the compliant narrow strip 18 is lower than the rest of the strip 11, and the compliant narrow strip 18 is located between adjacent retaining tongues 13 along the length direction of the strip 11.

[0027] An arc-shaped stress relief notch 17 is provided on the outer side of the welding boundary at both ends of the welding zone 12 to provide a stress relief area for the strip 11 to deflect at the angle of the local convex slope, so that the welding edge is not damaged by the shearing of the sudden angle; the middle section of the strip 11 between adjacent welding zones 12 is formed into a compliant narrow strip 18 by reducing the embossing height. The bending stiffness of the compliant narrow strip 18 is lower than that of the rest of the strip 11. When the geocell body 1 passes through uneven terrain such as protruding rocks or shallow pits, the strip 11 preferentially undergoes mild deformation at the compliant narrow strip 18, avoiding stress concentration and plastic bending at the edge of the weld zone 12. This structural feature improves the passive conformability of the geocell body 1 to undulating slopes and reduces the risk of cracking at the weld end under long-term creep conditions.

[0028] Combination Figure 3 As shown, the anchor rod 2 includes a steel rod body 21 and a pressure head 22; the steel rod body 21 is a straight rod; wherein, the lower end of the steel rod body 21 is machined into a conical tip, and the upper end is bent to form a hook; the pressure head 22 is a disc-shaped pressure plate; wherein, the central hole of the pressure head 22 is interference-fitted with the steel rod body 21, and the pressure head 22 is located below the hook.

[0029] The anchor rod 2 adopts a split combination structure of steel rod body 21 and pressure head 22; the cone tip at the lower end of the steel rod body 21 reduces the penetration resistance when driving into the slope, and the hook at the upper end faces the side of the top of the slope to generate an anchoring gripping force to resist the upward pull-out force; the pressure head 22 is interference-fitted with the steel rod body 21 through the central hole to keep it in a stable position during the driving process; When in use, the steel rod 21 passes through the corner of the continuous cavity, and the disc surface of the pressing head 22 presses against the edge of the intersection area of ​​the strip 11. This single rod pressing structure is easier to manually hold and strike on the slope of the target area than the traditional U-shaped nail, and is suitable for segmented tensioning construction implemented in conjunction with the self-locking structure of the male tooth edge 15 and the female groove edge 16.

[0030] Example 2: like Figure 4 As shown, a method for using geocells for slope greening includes the following steps: S1: Divide the slope to be treated into three sections: the slope top stabilization section, the middle runoff confluence section, and the slope toe energy dissipation section. Each section is then designated as a target area. The slope angle, maximum elevation difference, maximum hourly rainfall, fine particle mass percentage, and target plant root type are obtained for each target area. S2: Based on historical survey data and meteorological data of the slope to be treated, set preset slope angle threshold, preset rainfall intensity threshold, preset particle size threshold, and preset undulation threshold; determine the functional expansion degree based on the parameters obtained in step S1; when the slope angle value is greater than the preset slope angle threshold, the maximum hourly rainfall is greater than the preset rainfall intensity threshold, and the percentage of fine particles is less than the preset particle size threshold, reduce the lateral expansion degree of the geocell body 1 in the target area; when the slope angle value is less than or equal to the preset slope angle threshold, the maximum elevation difference is greater than the preset undulation threshold, and the root type of the target plant matches the lateral expansion type, increase the lateral expansion degree; when the above conditions are not met, maintain the preset foundation expansion degree. S3: Perform orientation determination and splicing determination to ensure that the free edges of the retaining tongues 13 on all strips 11 are uniformly oriented towards the top of the slope; if splicing is performed along the contour line, the male tooth edge 15 is preferentially positioned on the upstream side of the incoming water and the female groove edge 16 is preferentially positioned on the downstream side of the incoming water; if splicing is performed along the slope direction, the female groove edge 16 of the geocell body located on the upslope position is preferentially matched with the male tooth edge 15 of the geocell body located on the downslope position. S4: Perform zoned progressive tensioning. First, unfold the continuous cavity at the top of the slope and complete the initial fixation with anchor rod 2. Then, unfold it row by row along both sides and downwards. Lock it segment by segment by locking it with the male tooth edge 15 and the female groove edge 16 to the preset position. Then, perform diagonal alternating tensioning on the middle area to treat the energy dissipation section at the toe of the slope. S5: Perform layered backfilling. For the slope stabilization section at the top, first fill with coarse-grained base layer and then cover with plant growth soil. For the middle confluence section, first fill with skeleton soil below the retaining tongue 13 and then lay plant growth soil on top. For the energy dissipation section at the toe, first lay drainage base layer and then cover with plant growth soil.

[0031] In this embodiment, the geocell body 1 is regarded as a mechanical carrier whose performance can be adjusted by the degree of expansion, orientation, locking sequence and filling layer. In the above step S1, the slope to be treated is divided into the slope top stabilization section, the middle confluence section and the slope toe energy dissipation section corresponding to different treatment objectives, and multi-dimensional environmental and material grade parameters are obtained. The specific method for obtaining the grade is as follows: Use a slope measuring instrument to measure the slope angle in a grid pattern in the target area, and compare the measured slope angle value with the grading table to obtain the slope angle grade. The grading table uses 5-degree intervals, for example, 25-30 degrees is grade 3 and 30-35 degrees is grade 4; Use a tape measure or rangefinder to measure the projected length of the target area along the slope direction to obtain the slope length grade. The grading table uses 10-meter intervals. The elevation difference between adjacent grid points is measured using a level or laser rangefinder. The maximum elevation difference is compared with the grading table to obtain the surface undulation level. The grading table is divided into 5cm intervals. Recurrence period rainfall data is obtained from the local meteorological station. The maximum hourly rainfall value is extracted and compared with the grading table to obtain the design rainfall intensity level. The grading table is divided into 10mm / h intervals. The backfill samples were subjected to sieve analysis to calculate the mass percentage of particles smaller than 0.075 mm. The particle size distribution was compared with the grading table to determine the backfill particle size distribution, which used 10% intervals. Based on the planting design documents or the results of the plant root system survey, the main growth direction of the root system was determined to be either vertical downward or horizontally spreading, and the root type grade of the target plant was obtained. The preset slope angle threshold is determined by taking the natural internal friction angle of the fill soil in the target area. The moisture content reduction factor is obtained by referring to the table based on the design rainfall intensity level. The higher the design rainfall intensity level The smaller the value, generally between 0.7 and 0.9; the equivalent lateral constraint resistance. The test was conducted by laying a set of geocell bodies 1 on the slope and unfolding them according to the preset foundation spacing. Soil samples were filled into the continuous cavities, and a thrust was applied along the slope until the soil began to slip. The critical thrust value was recorded. Substitute the above parameters into: ; in, The total weight of the soil sample filled into the continuous cavities of the above-mentioned set of geocells. The friction coefficient is calculated, and its arctangent value is taken as the preset slope angle threshold. The preset rainfall intensity threshold is the upper limit of the rainfall intensity value corresponding to the design rainfall intensity level; the preset particle threshold is the upper limit of the fine particle percentage value corresponding to the fill particle level; and the preset undulation threshold is the upper limit of the elevation difference value corresponding to the surface undulation level. Step S2 executes the function expansion degree determination. When the slope angle level and design rainfall intensity level are high and the fill soil particles are fine, it is determined to reduce the lateral opening degree of the geocell body 1 in the target area. Specifically, the male tooth edge 15 is pulled from the preset foundation position of the female groove edge 16 towards the top of the slope by 1 to 2 more tooth positions, so that the lateral opening of the continuous cavity is reduced by 10% to 25% from the preset foundation opening, and the retaining tongue 13 maintains a high uplift density in the unit area. When the slope angle level is less than or equal to the preset slope angle threshold, the surface undulation level is greater than the preset undulation threshold, and the target plant root type level matches the lateral expansion type, it is determined to increase the lateral opening degree. Specifically, the male tooth edge 15 is pulled 1 to 2 tooth stops less towards the slope foot based on the preset base position of the female groove edge 16, so that the lateral opening of the continuous cavity increases from the preset base opening degree by 10% to 25%. When the above conditions are not met, the preset base opening degree is maintained. The preset base opening degree is when the male tooth edge 15 passes through the female groove edge 16 and is pulled back to the position of the 3rd to 5th tooth stop. Step S3 performs orientation and splicing determination to ensure that the free edge of the retaining tongue 13 faces the top of the slope to block the downward soil particles; Step S4 performs zonal progressive tensioning, first fixing the continuous cavity at the top of the slope, then unfolding it downwards along both sides and using the male tooth edge 15 and the female groove edge 16 to fasten to the preset position to achieve segmental locking to form a force-bearing frame; Step S5 performs layered filling, using a differentiated filling sequence for different slope sections. The bottom coarse-grained base course of the slope stabilization section at the top of the slope uses crushed stone or gravel with a particle size greater than 5mm. The filling thickness is 40% to 60% of the height of the continuous cavity. The interlocking force between the edges of the coarse particles is greater than the decomposition component of gravity along the slope surface, forming a stable skeleton to prevent overall sliding. The thickness of the surface vegetation growing soil is 40% to 60% of the height of the continuous cavity. The lower skeleton soil of the central confluence section is a mixture of sand and gravel with a particle size of 2 to 10 mm, which is filled into the downstream area of ​​the retaining tongue 13 to the height of the upturned retaining tongue 13. The upper layer of plant growth soil is up to the top of the continuous cavity. The bottom drainage layer of the slope toe energy dissipation section is made of crushed stone with a particle size of 5 to 20 mm, with a thickness of 30% to 50% of the height of the continuous cavity. The surface layer is covered with plant growth soil up to the top of the continuous cavity.

[0032] In step S4, the opening density correction of the retaining tongue is performed: in the middle confluence section, the adjacent continuous cavity is tensioned in a staggered manner so that the opening of the preceding continuous cavity is greater than that of the adjacent following continuous cavity, and the retaining tongue 13 is distributed in an alternating micro-step shape; in the slope stabilization section at the top of the slope and the energy dissipation section at the toe of the slope, the opening of the adjacent continuous cavity is kept consistent; if there is a protruding rock on the surface of the target area, and the strip 11 is suspended across the protruding rock during the tensioning process, the tensioning degree of the adjacent continuous cavity is relaxed, and an anchor rod 2 is added on the upstream side of the protruding rock so that the strip 11 tightly covers the surface of the protruding rock.

[0033] During the progressive tensioning process, a tongue-opening density correction operation is introduced. For the middle confluence section, the construction personnel control the staggered tensioning of the adjacent continuous cavities. The specific operation is as follows: first, the male tooth edge 15 of the front row passes through the female groove edge 16 and is pulled back to the preset position. The lateral opening of the continuous cavities of the front row is measured and recorded. Then, the male tooth edge 15 of the rear row passes through the female groove edge 16 and is pulled back to a position with 1 to 2 fewer tooth stops than the front row, so that the opening of the continuous cavity of the rear row is 5% to 15% smaller than that of the front row; this tension difference causes the degree of torsion of the strip 11 to change in a gradient, forcing the height and angle of the retaining tongue 13 to be misaligned, forming staggered microsteps on the slope; When the downstream water flow reaches the front row of retaining tongue 13 along the slope, it is forced to deflect laterally due to its large upward height. After the water flow bypasses the side edge of the retaining tongue 13, it immediately encounters the secondary obstruction of the rear row of retaining tongue 13. Since the upward position of the rear row of retaining tongue 13 is intersecting with that of the front row, the water flow cannot continue to move forward in the original deflection direction and is forced to change its flow direction again. Such repeated changes in flow direction cause the water flow energy to be consumed in multiple turns, and the reduced flow velocity leads to a weakening of its sand-carrying capacity. Fine-grained soil settles and stays in the deceleration zone. In the slope stabilization section at the top of the slope and the energy dissipation section at the toe of the slope, the opening of adjacent continuous cavities is controlled to be consistent to prevent local soil displacement. When the construction personnel use a feeler gauge to measure that the gap between the bottom of the strip 11 and the slope surface exceeds 20mm during the tensioning process, it is determined to be in a suspended state, and the tensioning operation is stopped. The male tooth edge 15 is removed from the current position of the female groove edge 16 by 1 to 2 positions and then re-locked. Anchor rods 2 are added to the upstream side of the protruding rock. Under the dual effect of the relaxation of the cavity opening and the increase of anchor points, the low pressure height area of ​​the compliant narrow strip 18 preferentially undergoes controlled bending deformation, so that the strip 11 transitions from an suspended straight state to a curved state that is attached to the slope surface.

[0034] After step S5, the following steps are also included: S6: Perform on-site correction judgment. After completing the backfilling and initial watering, obtain the slope water marks and soil surface deformation parameters; if continuous linear water marks appear in the target area and cross the preset number of continuous cavities, then release the preset locking of the male tooth edge 15 and the female groove edge 16 in the local area and pull it back to tighten the opening of the continuous cavities; if the soil in the target area is piled up above the retaining tongue 13 and empty below, then loosen the preset locking; if the area near the root induction hole 14 is exposed for a long time, then cover the surface of the area with fine-grained plant growth soil and maintain the original opening.

[0035] After the backfilling process is completed, an on-site correction and judgment mechanism based on environmental feedback is introduced; specifically, the completion of backfilling refers to the experimental backfilling stage of completing the bottom skeleton soil; the slope runoff is stimulated by the initial pouring, and the construction personnel observe and obtain the distribution of water marks on the slope and the deformation of the soil surface on site. Among them, the preset number of continuous cavities is a spatial span threshold used to characterize the critical distance at which linear runoff is not effectively dispersed and directly penetrates, and is the key logical judgment basis for triggering the locking gear tightening action; the preset number of cavities is 3 to 5 rows of continuous cavities; The specific method for obtaining and processing the above parameters is as follows: After the initial watering, the construction personnel visually observe the distribution pattern of the water marks from top to bottom along the slope. They use a marker rod to insert markers along the main water mark line every other row of continuous cavities, and count the number of markers to determine the number of rows of cavities through which the water marks penetrate. At the same time, they select several representative cavities and use a ruler to measure the elevation difference between the soil surface upstream and downstream of the retaining tongue plate 13, and record the local pile height or hollowing depth. When the monitoring results show that continuous linear water marks appear in the target area and penetrate more than the preset number of rows of continuous cavities, it is determined that the guiding ability of the herringbone-shaped guiding texture in this area is insufficient, and the wall of the plate 11 has failed to effectively disperse the concentrated water flow into lateral flow. Construction workers performed a correction operation. To prevent the cell from collapsing or mechanically jamming due to the self-weight of the filled skeleton soil when the locking was released, a spare anchor rod was temporarily driven into the upstream side of the target continuous cavity to unload the stress. The current locking position of the male tooth edge 15 and the female groove edge 16 in this area was released. The male tooth edge 15 was pulled back towards the top of the slope to the preset locking position and then re-locked. This reduced the opening of the continuous cavity and simultaneously increased the lifting density of the retaining tongue 13, enhancing the interception frequency of linear runoff and forcing the water flow to deflect within the first preset downslope distance. When the measurement results show that the soil in the target area is piled up above the retaining tongue 13 and the elevation difference exceeds the preset allowable deformation value while the area below is empty, it is determined that the local flow is blocked too much and the retaining tongue 13 is too dense, causing the soil particles to be unable to migrate naturally to the downstream side. The construction personnel perform the relaxation operation. Similarly, after the spare anchor rod is driven in and unloaded, the male tooth edge 15 is removed from the current position of the female groove edge 16 and then relocked to the preset locking relaxation position to increase the opening of the continuous cavity, so that the water flow can obtain lateral dispersion space in the cavity, and the fine soil particles settle more evenly in the deceleration zone, balancing the soil pressure upstream and downstream. When it was observed that the area near the root induction hole 14 was exposed for a long time, it was determined that the thickness of the upper fine-particle water-retaining layer was insufficient, and the reverse slope edge of the root induction hole 14 failed to form an effective water-retaining zone. The construction personnel covered the surface of this area with fine-particle plant growth soil, and the thickness of the soil cover was set to be flush with the upper edge of the root induction hole 14. The original hole opening was strictly maintained to prevent the opening from tightening and causing the root perforation path to be shortened, affecting the cross-cavity winding. This correction judgment mechanism transforms the self-locking structure of the male tooth edge 15 and the female groove edge 16 into a repeatable adjustment execution basis, realizing the dynamic reconstruction of the cell performance according to the state of soil and water loss. In this embodiment, the on-site correction adopts a deterministic processing method that combines manual measurement with a preset judgment table, without relying on image recognition models or training data. Before the first watering, representative upper, middle and lower cavities in the target area are selected as reference points, and the number of consecutive rows of cavities, the opening of the cavities, the height of the soil surface upstream and downstream of the retaining tongue 13 and the coverage status of the root induction hole 14 are recorded. After watering, remeasure at the same benchmark point and compare the number of water marks, soil surface elevation difference, and exposed state with the preset thresholds in the construction record item by item. The preset number of rows and thresholds should be determined in combination with the slope length of the target area, the design rainfall intensity, and the row spacing of the holes. The judgment of soil surface height or emptiness below should be based on the elevation difference measured by the ruler exceeding the preset allowable deformation value. The exposed root induction hole 14 is defined as the upper edge of the hole being continuously visible and not being covered by plant growing soil after one dry-wet cycle. After completing the gear adjustment or soil replenishment, the same benchmark point is sprayed again for verification. On-site correction is only completed when the linear water mark no longer crosses continuously, the elevation difference between the upstream and downstream soil surfaces returns to the allowable range, and the root induction hole 14 is stably covered. The spraying time, measurement location, original data, gear adjustment, and verification results are all recorded to form a traceable closed loop of on-site feedback, processing actions, and verification results.

[0036] For any part not mentioned in this invention, existing technologies can be used or referenced. Of course, the above description is not a limitation of this invention, and this invention is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of this invention should also be within the protection scope of this invention.

Claims

1. A geocell for slope greening, characterized in that, include: Geocell body (1) and anchor rod (2); The geocell body (1) is composed of strips (11) arranged in parallel along the left and right directions; The adjacent strips (11) are connected at intervals along the length direction through the welding area (12), and the adjacent rows of welding areas (12) are staggered, so that the geocell body (1) is stretched laterally to form a continuous cavity; The middle of the strip (11) is punched with a retaining tongue (13). After the retaining tongue (13) is cut, the root connection is retained to the side. The root connection line is parallel to the length direction of the strip (11), and the free edges are uniformly facing the same side of the geocell body (1). In the folded state, the retaining tongue (13) lies flat against the plane of the strip (11); when pulled open laterally, the retaining tongue (13) is raised as the strip (11) twists. The strip (11) has root induction holes (14) staggered on the upper and lower sides of the retaining tongue (13); the strip (11) has a male tooth edge (15) and a female groove edge (16) at both ends, the male tooth edge (15) has outward protruding teeth punched at equal intervals, and the female groove edge (16) has a clearance hole and a locking shoulder corresponding to the outward protruding teeth. When adjacent geocell bodies (1) are spliced, the male tooth edge (15) of the front geocell body (1) passes through the female groove edge (16) of the adjacent rear geocell body (1) and is pulled back, and the outward tooth crosses the lock shoulder and abuts against the lock shoulder.

2. The geocell for slope greening as described in claim 1, characterized in that, The surface of the strip (11) is embossed to form a longitudinal main pattern and a diagonal secondary pattern; wherein, the longitudinal main pattern extends along the length direction of the strip (11), and the diagonal secondary pattern intersects with the longitudinal main pattern to form a fishbone-shaped flow guide texture.

3. The geocell for slope greening as described in claim 1, characterized in that, The root induction hole (14) is elongated along the height direction of the strip (11); wherein the long side of the root induction hole (14) is inclined to the same preset side of the adjacent continuous cavity, and the hole edge of the root induction hole (14) retains a reverse slope cutting edge towards the inside of the continuous cavity; a continuous rib is left between the root induction hole (14) and the retaining tongue (13); wherein the periphery of the retaining tongue (13) retains an opening, and the two ends of the root connection line retain an arc transition area.

4. The geocell for slope greening as described in claim 1, characterized in that, The front end of the protruding tooth is rounded and the root is inclined. When the male tooth edge (15) is pulled back, the inclined surface of the tooth root abuts against the locking shoulder.

5. The geocell for slope greening as described in claim 1, characterized in that, The two ends of the welded area (12) are formed with stress relief notches (17); wherein the stress relief notches (17) are arc transition cuts and are located outside the welded boundary of the welded area (12); the weldless area of ​​the strip (11) between adjacent welded areas (12) forms a compliant narrow strip (18); wherein the embossing height of the compliant narrow strip (18) is lower than the rest of the strip (11), and the compliant narrow strip (18) is located between adjacent retaining tongues (13) along the length direction of the strip (11).

6. The geocell for slope greening as described in claim 1, characterized in that, The anchor rod (2) includes a steel rod body (21) and a pressure head (22); the steel rod body (21) is a straight rod; wherein, the lower end of the steel rod body (21) is machined into a cone tip, and the upper end is bent to form a hook; the pressure head (22) is a disc-shaped pressure plate; wherein, the center hole of the pressure head (22) is interference-fitted with the steel rod body (21), and the pressure head (22) is located below the hook.

7. A method of using the geocell for slope greening as described in claim 1, characterized in that, Includes the following steps: S1: Divide the slope to be treated into three sections: the slope top stabilization section, the middle confluence section, and the slope toe energy dissipation section. Each section is then designated as a target area. The slope angle, maximum elevation difference, maximum hourly rainfall, fine particle mass percentage, and target plant root type of each target area are then obtained. S2: Based on the historical survey data and meteorological data of the slope to be treated, set preset slope angle threshold, preset rainfall intensity threshold, preset particle threshold and preset undulation threshold; determine the functional expansion degree based on the parameters obtained in step S1; when the slope angle value is greater than the preset slope angle threshold, the maximum hourly rainfall is greater than the preset rainfall intensity threshold and the fine particle mass percentage is less than the preset particle threshold, reduce the lateral stretching degree of the geocell body (1) in the target area; when the slope angle value is less than or equal to the preset slope angle threshold, the maximum elevation difference is greater than the preset undulation threshold and the target plant root type matches the lateral expansion type, increase the lateral stretching degree; when the above conditions are not met, maintain the preset foundation stretching degree. S3: Perform orientation determination and splicing determination to make the free edges of the retaining tongues (13) on all the strips (11) face the top of the slope. If splicing is done along the same height direction, the male tooth edge (15) is preferably located on the upstream side of the incoming water and the female groove edge (16) is preferably located on the downstream side of the incoming water. If splicing is done along the slope direction, the female groove edge (16) of the geocell body located on the upslope position is preferably matched with the male tooth edge (15) of the geocell body located on the downslope position. S4: Perform zoned progressive tensioning. First, unfold the continuous cavity at the top of the slope and complete the initial fixation with the anchor rod (2). Then, unfold it row by row along both sides. Lock it segment by segment by locking it with the male tooth edge (15) and the female groove edge (16) to the preset position. Then, perform diagonal alternating tensioning on the middle area. Finally, process the energy dissipation section at the foot of the slope. S5: Perform layered filling. For the slope top stabilization section, first fill with coarse-grained base layer and then cover with plant growth soil. For the middle confluence section, first fill with skeleton soil below the retaining tongue (13) and then lay plant growth soil on the upper layer. For the slope toe energy dissipation section, first lay drainage base layer and then cover with plant growth soil.

8. The method of use as described in claim 7, characterized in that, In step S4, the opening density correction of the retaining tongue is performed: in the middle confluence section, the adjacent columns of continuous cavities are staggered and tensioned so that the opening of the front column of continuous cavities is greater than the opening of the adjacent rear column of continuous cavities, and the retaining tongue (13) is distributed in an alternating micro-step shape. In the slope stabilization section at the top of the slope and the energy dissipation section at the bottom of the slope, the opening of adjacent continuous cavities is kept consistent; if there is a protruding rock on the surface of the target area, and the strip (11) is suspended across the protruding rock during the tensioning process, the opening of the adjacent continuous cavities at that location is relaxed, and the anchor rod (2) is added to the upstream side of the protruding rock so that the strip (11) tightly covers the surface of the protruding rock.

9. The method of use as described in claim 7, characterized in that, After step S5, the following steps are also included: S6: Perform on-site correction judgment, and after completing the backfilling and initial watering, obtain the slope water mark and soil surface deformation parameters; if continuous linear water marks appear in the target area and cross the preset number of continuous cavities, then release the preset locking of the male tooth edge (15) and the female groove edge (16) in the local area and pull it back to tighten the opening of the continuous cavity; if the soil in the target area is piled up above the retaining tongue (13) and empty below, then loosen the preset locking; if the root induction hole (14) is exposed for a long time, then cover the surface of the area with fine-grained plant growth soil and maintain the original opening.

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