Fabricated ecological building protection structure suitable for high-underground-water-level canal section

Abstract

The assembly type ecological building protection structure comprises a foundation and a protection slope which are oppositely arranged on the two sides of a channel, and the foundation comprises a prefabricated slope toe and a slope toe cushion layer arranged on the lower portion of the prefabricated slope toe; the revetment comprises a lock catch brick layer, a first abutment cap, a first honeycomb geocell, a second abutment cap and a second honeycomb geocell. The whole structure is of a self-adaptive frost heaving deformation assembly type structure, frost heaving force is released, the construction speed is high, synchronous construction can be achieved, the requirement for construction time is not met, construction can be conducted in any season, the construction efficiency is improved, the construction cost is reduced, and synchronous water supply can be achieved in the construction period.

Description

Technical Field

[0001] The present application relates to the technical field of channel antifreeze, and specifically to an assembled ecological masonry structure suitable for channel sections with high groundwater levels. Background Art

[0002] Deformation and failure of channel slopes are often closely related to the effects of groundwater. In channels located in areas with high groundwater levels, the soil below the groundwater level is saturated, resulting in reduced physical and mechanical properties and shear strength, which adversely affects the stability of the channel slopes. Furthermore, groundwater seepage along the channel slopes creates a hydraulic gradient. This infiltration increases the downward force of the soil, reducing the safety factor against sliding and potentially leading to instability. Concrete lining slabs in high-groundwater-level channels can also face buoyancy and stability issues, particularly when using composite geomembranes for full-section seepage protection. The buoyancy generated by the groundwater beneath the lining slabs can potentially exceed the lining slab's own weight and the channel's internal water pressure, weakening the lining slab's buoyancy and causing damage. Furthermore, in channel sections with high groundwater levels, capillary suction forces allow groundwater to continuously migrate toward the frozen surface of the surface soil, increasing the subsoil moisture content and exacerbating frost heave damage. The existence of these problems will inevitably increase channel safety risks, reduce service life, increase maintenance costs, and prevent the full realization of project benefits. In addition, during the construction of high groundwater level channel sections, due to the high water content of the channel foundation and the year-round water in the channel, cast-in-place construction leads to unstable quality. In order to reduce the impact of groundwater, especially for channel reconstruction projects, it is also necessary to take into account the normal use of the channel. Construction is often carried out in autumn and winter when the groundwater level is lower. However, the low temperature at this time has a greater impact on project quality. It may also cause the water in the channel to be drained, resulting in an increase in the project volume and affecting the water flow of the channel. At the same time, each module must be constructed in a sequential order and cannot be constructed simultaneously to shorten the construction period. Summary of the Invention

[0003] (1) Technical problems solved

[0004] In view of this, the purpose of this application is to solve two important problems in existing channel management: (1) The concrete lining slabs of channels with high groundwater levels have weak anti-floating stability, are greatly affected by frost heave, and are prone to deformation and damage; (2) The quality control of the slope lining of channels with high groundwater levels is difficult, the overall stability is poor, the economic benefits are low, the construction time is limited, and the normal use of the channels cannot be taken into account during the reconstruction and expansion of the channels, and the simultaneous construction of each module cannot be achieved.

[0005] (2) Technical solution

[0006] In order to solve technical problems 1 and 2, the present application provides an assembled ecological masonry protection structure suitable for canal sections with high groundwater levels. It adopts an assembled structure with adaptive frost heave deformation to release frost heave force, increase the permeability of the slope protection structure, and reduce the permeability generated during groundwater seepage. At the same time, each module is prefabricated in the factory and assembled on site to ensure quality. It can be constructed throughout the year without time restrictions, and after the layout of the lower prefabricated slope foot is completed, it can be directly used for normal water supply. The structure includes a foundation and slope protection symmetrically arranged on both sides of the channel, characterized in that: the foundation includes a prefabricated slope foot and a slope foot pad arranged at the bottom of the prefabricated slope foot, the prefabricated slope foot includes a horizontally arranged lower slope foot and an inclined upper slope foot abutting the outer side of the lower slope foot, the lower slope foot and the upper slope foot are both spliced ​​by slope foot modules, the slope foot modules are provided with circular holes and pre-embedded steel bar lifting ears therein; the slope protection includes a locking brick layer, a first cap, a first honeycomb geocell, a second cap, and a second honeycomb geocell, the locking brick layer is arranged on the outer side of the upper slope foot and is spliced ​​by prefabricated concrete locking bricks, the upper surface of the locking brick layer is lower than the upper surface of the upper slope foot, the outer side of the locking brick layer is provided with a first cap, and the outer side of the first cap is provided with a first honeycomb geocell; the top surface elevation of the lower slope foot is flush with the designed channel bottom elevation, the highest point of the top of the upper slope foot is higher than the normal water level in winter, the highest point of the top of the locking brick layer is higher than the increased water level, and the lowest point of the bottom is lower than the designed water level.

[0007] As a further description of the technical solution of this application:

[0008] The slope foot module includes type A prefabricated slope foot, type B prefabricated slope foot, type C prefabricated slope foot and type D prefabricated slope foot, wherein the lower slope foot is formed by staggered splicing of type A prefabricated slope foot and type B prefabricated slope foot, and the upper slope foot is formed by staggered splicing of type C prefabricated slope foot and type D prefabricated slope foot; the slope ratio of the upper slope foot, the locking brick layer and the first honeycomb geocell is 1:2, and the width ratio of the lower slope foot, the upper slope foot and the locking brick layer is 0.4-0.5:1:0.8-0.9; The first honeycomb geocell is uphill, and a top-laying buffer section is set at the top of the slope for buffering. A second honeycomb geocell is formed on the other side of the top of the slope. A foot-laying buffer section is set at the foot of the slope of the second honeycomb geocell. Geotextiles are laid at the bottom of the first honeycomb geocell and the top-laying buffer section, and the second honeycomb geocell and the foot-laying buffer section, and T-shaped nails vertical to the slope are evenly distributed inside; a second cap is set on the upper part of the top-laying buffer section.

[0009] As a further description of the technical solution of this application:

[0010] The prefabricated slope foot is prefabricated with 300mm thick C35, F200, and W6 concrete; the gravel used in the slope foot pad layer is of natural gradation, with a particle size of ≤20mm, a mud content of not more than 10%, and a relative density of not less than 0.7; the slope foot pad layer includes an inverted right-angled trapezoidal pad layer, a slope foot cross-sectional pad layer, and an equilateral triangle pad layer, the upper part of the inverted right-angled trapezoidal pad layer is flush with the designed channel bottom elevation, the slope ratio of the hypotenuse is 1:1, and the lower part is flush with the lowest part of the slope foot cross-sectional pad layer, the thickness of the slope foot cross-sectional pad layer is 300mm, and it is opposite to the lower part of the prefabricated slope foot (1), one right-angled side of the equilateral triangle pad layer is in contact with the slope foot cross-sectional pad layer and the outer side of the upper slope foot, and the other right-angled side is in contact with the lower surface of the lock brick layer.

[0011] As a further description of the technical solution of this application:

[0012] The concrete lock bricks are prefabricated with C30, F200, and W6 concrete, with a thickness of 150 mm. The height between the outer surface of the lock brick layer and the outer surface of the upslope foot is 50 to 100 mm. The specification of the geotextile is 200 g / m 2 ; The lower cap of the first cap is backfilled with C25 concrete. The first and second caps are both prefabricated with C25 concrete. The interior of the slope top paving buffer section and the gap with the second cap are filled with M10 cement mortar; a rust-free welded gabion is set on the right side of the cap filling. The rust-free welded gabion is a rectangular structure, the upper surface is flush with the lower surface of the first cap, and the lower surface is lower than the geotextile at the bottom of the first honeycomb geocell; the cement used for each component of the slope protection is high sulfur-resistant cement.

[0013] As a further description of the technical solution of this application:

[0014] A rust-free welded grid beam is set on the slope protection every 10m along the direction of water flow; a road is set on the outside of the channel, and a corrugated guardrail is set on the side of the road close to the channel. The elevation of the road is consistent with the bottom elevation of the second cap.

[0015] (3) Beneficial effects

[0016] This application provides a method that has the following advantages compared to the prior art:

[0017] (1) The concrete prefabricated toe foundation, locking bricks, and honeycomb geocells in this application are all constructed on-site by prefabricated construction. The prefabricated structure is self-adaptive to frost heave deformation, which releases frost heave force, increases construction speed, and shortens the construction period when renovating existing channels. Once the prefabricated toe is constructed, it can be used for water supply without being affected by the construction time limit. The prefabricated structure has strong adaptability to deformation of the foundation and slope, strong resistance to frost heave deformation and earthquake resistance, and the concrete components are all prefabricated in the factory. The quality of each concrete component is guaranteed, and the quality is significantly higher than that of the on-site cast concrete foundation. The toe modules that form the flat downslope toe and the inclined upslope toe are all opened with circular holes and pre-embedded steel bar lifting ears in them. This not only reduces the weight of the prefabricated components, reduces manufacturing costs, and facilitates lifting and assembly, but also plays a role in water permeability. Groundwater outside the channel can penetrate into the channel through the circular holes. The foundation has good water permeability and can maintain the connectivity of the ecosystem. It is not restricted by the construction season and can be constructed in any season, which improves construction efficiency and reduces construction costs. When renovating existing channels, the construction period is short and the water flow and irrigation in the channels are not affected.

[0018] (2) The size ratio of each structure in this application ensures both the stability and economy of the structure, and is applicable to most such channels. This application can realize the simultaneous construction of the locking brick layer and the honeycomb geocell, greatly reducing the construction time, and at the same time, it can realize water supply during the construction period. For new channels and expanded channels, water supply can be directly used normally after the arrangement of the lower prefabricated slope foot is completed. For expanded channels, a U-shaped groove can be excavated in the middle to meet the need for a small amount of water supply, so that the whole process does not affect water supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the overall structure cross-section of this application;

[0020] Figure 2 This is a schematic diagram of the structural cross section of 1 / 2 of this application;

[0021] Figure 3 This is a schematic diagram of the overall structural layout of this application;

[0022] Figure 4 A schematic diagram of a concrete locking brick style used in this application;

[0023] Figure 5 This is a schematic diagram of the lock brick layer style for this application;

[0024] Figure 6 For this application Figure 2 A partial enlarged schematic diagram;

[0025] Figure 7 For this application Figure 2 A partial enlarged schematic diagram of B in the middle;

[0026] In the figure: 1. Precast toe; 11. Lower toe; 111. Type A precast toe; 112. Type B precast toe; 12. Upper toe; 121. Type C precast toe; 122. Type D precast toe; 2. Toe cushion layer; 21. Inverted right-angle trapezoidal cushion layer; 22. Toe cross-section cushion layer; 23. Right-angle triangle cushion layer; 3. Locking brick layer; 31. Concrete locking brick; 4. First cap; 41. Cap caulking; 5. First honeycomb geocell; 51. Rust-free welded gabion; 6. Second cap; 61. Slope top paving buffer section; 7. Second honeycomb geocell; 8. Corrugated guardrail; 9. Road; 10. Rust-free welded grid beam; 13. T-type nails; 14. Geotextile. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0028] like Figures 1 to 3As shown, the assembled ecological masonry structure suitable for canal sections with high groundwater levels includes a foundation and slope protection set up on both sides of the channel. The foundation includes a prefabricated slope foot 1 and a slope foot pad 2 set at the bottom of the prefabricated slope foot 1. The prefabricated slope foot 1 serves as a foundation to stabilize the slope foot, improve the stability of the overall channel slope, and prevent the slope foot from being eroded by water. At the same time, the slope foot pad 2 is set to effectively avoid the common frost heave damage of the cast-in-place concrete slope foot. The prefabricated slope foot 1 includes a horizontally arranged lower slope foot 11 and an inclined upper slope foot 12 that abuts against the outside of the lower slope foot 11. The lower slope foot 11 and the upper slope foot 12 abut against each other, and a bayonet and a slot can be set at the abutment to ensure that they are stably connected together. The lower slope foot 11 and the upper slope foot 12 are both spliced ​​together by slope foot modules. The slope foot modules are provided with round holes and pre-embedded steel bar lifting ears therein. The toe modules are designed to facilitate prefabrication. After factory prefabrication, they can be hoisted on-site. Fully mechanized construction reduces labor and accelerates construction. Water can be used immediately upon completion of the prefabricated toe 1, unaffected by construction deadlines. Prefabricated structures are highly adaptable to foundation and slope deformation, resist frost heave deformation, and withstand earthquakes. Concrete components are prefabricated at the factory, ensuring the quality of each concrete component is guaranteed, significantly exceeding that of a cast-in-place concrete foundation. The toe modules forming the flat lower toe 11 and the diagonal upper toe 12 are each perforated with circular holes and embedded with steel lifting lugs. This not only reduces the weight of the prefabricated components, lowers manufacturing costs, and facilitates hoisting and assembly, but also provides permeability. Groundwater outside the channel can seep into the channel through the circular holes, improving the foundation's permeability and maintaining ecosystem connectivity. Furthermore, construction is not restricted by seasonality; construction can be carried out in any season, improving efficiency and reducing costs. When renovating existing channels, the short construction period ensures that irrigation within the channel is not affected.

[0029] See also Figure 2 、 4, 5 and 6, the slope protection includes a locking brick layer 3, a first cap 4, a first honeycomb geocell 5, a second cap 6, and a second honeycomb geocell 7. A locking brick layer 3 is provided on the outside of the uphill foot 12. The locking brick layer 3 is made of prefabricated concrete locking bricks 31. The size of the concrete locking bricks 31 is preferably 400 mm long, 300 mm wide, and 150 mm high. It consists of two types of bricks, one with a protrusion and the other with a groove, which can be snapped together. The snap joints of the two rows of concrete locking bricks 31 cannot be too tight, leaving an expansion joint to avoid thermal expansion and contraction and frost heave. At the same time, in order to avoid the pressure of the upper bricks closing the seam, a polyethylene closed-cell foam board can be filled in the seam to enable it to achieve thermal expansion and contraction and avoid automatic closure. The locking brick layer 3 is lower than the upper surface of the upslope foot 12, and a first cap 4 is provided on the outside of the locking brick layer 3. The lower cap caulking 41 of the first cap 4 is backfilled with C25 concrete, and a first honeycomb geocell 5 is provided on the outside of the first cap 4; a rust-free welded gabion 51 is provided on the right side of the cap caulking 41. The rust-free welded gabion 51 is a rectangular structure filled with stones. The upper surface is flush with the lower surface of the first cap 4 and remains flat. The lower surface is lower than the geotextile 14 at the bottom of the first honeycomb geocell 5, that is, the bottom of the rust-free welded gabion 51 is lower than the geotextile 14 arranged at the bottom of the first honeycomb geocell 5. The junction between the first honeycomb geocell 5 and the rust-free welded gabion 51 is preferably tied to ensure stability and prevent tension. The top surface elevation of the downhill foot 11 is flush with the designed channel bottom elevation, and the highest point of the top of the uphill foot 12 is higher than the winter normal water level, but it is slightly higher, generally 50 to 100 mm. The winter normal water level is generally the water level that is maintained the longest each year, so special attention should be paid to the scouring effect of the water level at this height on the slope. The height of the uphill foot 12 can not only ensure that the scouring effect of the water body on the slope is reduced, but also ensure that the cost is reduced as much as possible, so that the economy and safety are optimized. The highest point of the top of the locking brick layer 3 is higher than the increased water level, and the lowest point of the bottom is lower than the designed water level. The highest point of the top is also slightly higher than the increased water level, generally 50 to 100 mm, which also reduces the scouring of the water body on the slope and avoids its instability. The concrete locking bricks 31 are arranged in the water level variation area in the channel, which can effectively resist water scouring, stabilize the slope and play a role in water permeability. The provision of the first cap 4 can prevent the water from overflowing into the first honeycomb geocell 5 and scouring the soil in the first honeycomb geocell 5 due to the influence of factors such as wind when the water level is increased.

[0030] In the embodiments of this application, please refer to Figure 3The toe module includes a prefabricated toe of type A 111, a prefabricated toe of type B 112, a prefabricated toe of type C 121, and a prefabricated toe of type D 122. The lower toe 11 is formed by staggered splicing of the prefabricated toe of type A 111 and the prefabricated toe of type B 112, which are mutually clamped. The upper toe 12 is formed by staggered splicing of the prefabricated toe of type C 121 and the prefabricated toe of type D 122, which are mutually clamped. The overall structure adopts prefabricated toe, prefabricated concrete locking bricks 31, and the first honeycomb geocell 5, and the first honeycomb geocell 5 is filled with gravel or planting soil. The main advantages are: all can be assembled and constructed quickly; all are flexible connection structures, with strong resistance to frost heave deformation and earthquake resistance; strong water permeability, reducing seepage pressure, facilitating the infiltration of high groundwater outside the channel into the channel, and can effectively resist scouring. The height of the setting achieves economic optimization.

[0031] In the embodiments of this application, please refer to Figure 1 、 2, 6, 7, the slope ratio of the upslope foot 12, the locking brick layer 3 and the first honeycomb geocell 5 is 1:2, and the width ratio of the downslope foot 11, the upslope foot 12, the locking brick layer 3 is 0.4~0.5:1:0.8~0.9. This width refers to the surface width, not the projection width. In an optimal ratio, 0.4:1:0.9 is selected. This ratio ensures both the stability and economy of the structure, and is applicable to most such channels. The first honeycomb geocell 5 is uphill, and a top-level buffer section 61 is provided at the top of the slope for buffering. A second honeycomb geocell 7 is formed on the other side of the top of the slope, and a foot-level buffer section is provided at the foot of the slope of the second honeycomb geocell 7. Geotextiles 14 are laid on the bottom of the first honeycomb geocell 5, the top-level buffer section 61, the second honeycomb geocell 7, and the foot-level buffer section, and are uniformly distributed inside with vertically sloped T-shaped nails 13. The geotextiles 14 at the bottom of the foot-level buffer section are folded upward to wrap the outside of the second honeycomb geocell 7, fully isolating it from the roadbed and avoiding affecting the safety of the roadbed. The T-shaped nails 13 are distributed in an array on the first honeycomb geocell 5 and the second honeycomb geocell 7, with a row arranged in the top-level buffer section 61 and the foot-level buffer section, and vertically inserted into the bottom; a second cap 6 is provided on the top-level buffer section 61. The first cap 4 and the second cap 6 are both prefabricated with C25 concrete, also prefabricated in the factory and assembled on site, ensuring quality and stability. The interior of the slope top paving buffer section 61, that is, the cell at the top of the slope and the gap between it and the second cap 6, is filled with M10 cement mortar, and then vertical T-shaped nails 13 are driven in. The C25 prefabricated concrete second cap 6 is placed on top, and the second honeycomb geocell 7 is formed by back pressure to the rear of the slope top. Since the honeycomb geocell adopts a common structure on the market and is a three-dimensional structure, this installation method facilitates the rapid installation of the honeycomb geocell. Grouting in the cell at the top of the slope, vertically driving T-shaped nails 13, placing the prefabricated concrete cap on top, and the T-shaped nails 13 driven into the slope can effectively fix the honeycomb geocell, and it will not slide down the slope due to the increased deadweight of the filling material in the cell, thereby increasing the stability of the slope structure.

[0032] In addition, the honeycomb geocell is an ecological slope protection structure. While stabilizing the channel slope and reducing the groundwater infiltration pressure, the honeycomb geocell can be filled with planting soil and sown with grass seeds. It has a good ecological landscape effect. After the plants grow and mature, the ecological benefits of the channel slope are improved. The plant roots can also play a role in soil consolidation and slope protection. The plants planted are generally salt-tolerant and drought-resistant herbaceous plants. For example, perennial forage crops such as alfalfa can be selected, which can not only enable the roots to grow stably in the cell for a long time, but also serve as a high-quality forage resource, providing convenience for coastal residents to raise cattle and sheep.

[0033] In the embodiment of the present application, the prefabricated slope foot 1 is prefabricated with 300mm thick C35, F200, and W6 concrete. F200 represents the frost resistance grade, and the frost resistance test requires 200 freeze-thaw cycles. W6 represents the impermeability grade, and the impermeability of the concrete standard test block is not less than 0.6MPa water pressure; the gravel used in the slope foot pad 2 is naturally graded, with a particle size of ≤20mm, a mud content of not more than 10%, and a relative density of not less than 0.7; the slope foot pad 2 includes an inverted right-angled trapezoidal pad 21, a slope foot cross-section pad 22, and an equilateral triangle pad 23. The upper part of the inverted right-angled trapezoidal pad 21 is flush with the designed channel bottom elevation, the slope ratio of the hypotenuse is 1:1, and the lower part is flush with the lowest part of the slope foot cross-section pad 22. The thickness of the inverted right-angled trapezoidal pad 21 is relatively thick to prevent water flow The downslope foot 11 is lifted, and at the same time, it is also avoided that when the water body in the channel is less, the water body is mainly concentrated in the middle of the channel, and the frost heave is serious in winter, which causes the downslope foot 11 to be lifted. The thickness of the slope foot cross-section cushion layer 22 is 300mm. It is opposite to the lower part of the prefabricated slope foot 1. One right-angled side of the equilateral triangle cushion layer 23 is in contact with the outer side of the slope foot cross-section cushion layer 22 and the upslope foot 12, and the other right-angled side is in contact with the lower surface of the locking brick layer 3; the concrete locking brick 31 is prefabricated with C30, F200, and W6 concrete, and the thickness is preferably 150mm. The outer surface of the locking brick layer 3 is 50-100mm above the outer surface of the upslope foot 12, leaving a certain distance, which is equivalent to a small step. When someone falls into the water, it is convenient for rescue and self-rescue. The specification of the geotextile 14 is 200g / m 2 The cement used in all components of the slope protection is high-sulfur-resistant cement. The water bodies in the northern arid areas where frost heave occurs are mainly sulfates, which can easily cause chemical corrosion of water-based concrete hydraulic structures. Therefore, choosing high-sulfur-resistant cement can effectively avoid this phenomenon, extend the service life of the structure, and reduce the later operation and maintenance costs.

[0034] In the embodiment of the present application, a rust-free welded grid beam 10 is installed on the slope protection every 10 meters along the direction of the water flow; a road 9 is provided on the outside of the channel, and a corrugated guardrail 8 is provided on the side of the road 9 close to the channel. The elevation of the road 9 is consistent with the bottom elevation of the second cap 6. The pavement material of the road 9 is preferably industrial solid waste. The road 9 is set at a certain slope towards the channel side. The water collected by daily rainfall can enter the upper part of the flat buffer section at the foot of the slope and replenish water to the plants planted in the second honeycomb geocell 7 through infiltration, making full use of rainfall resources.

[0035] The construction method of the assembled ecological masonry structure applicable to canal sections with high groundwater levels provided in this application is as follows:

[0036] S1. For newly built channels, survey and design are required first, and the channel foundation excavation is carried out. During excavation, the channel embankment is built by excavating in the middle and backfilling on both sides to fully utilize the earthwork. Before backfilling the channel embankment, the surface humus, garbage and debris should be removed. The clearing thickness is 300mm. When filling, the embankment is filled in layers according to the designed shape and compacted layer by layer. For the expansion and reconstruction of the channel, the original channel slope protection is cleared and filled and rolled into the designed shape. The compaction degree of rolling is greater than 0.93. When the expansion and reconstruction channel needs to flow water during construction, it is necessary to excavate an additional U-shaped groove in the middle of the channel for water flow without affecting the construction of the channel. After the prefabricated slope foot 1 construction of the newly built or expanded channel is completed, it can be used normally.

[0037] S2. Laying the toe pad 2 and prefabricated toe 1: When the pad is laid to the height of the lower toe 11, place the lower toe 11. Then, backfill and lay the right-angled trapezoidal pad 21, the remaining part of the toe cross-sectional pad 22, and the equilateral triangle pad 23. After the laying is completed, lay the upper toe 12 on the upper part of the toe cross-sectional pad 22.

[0038] S3, laying locking brick layer 3: laying concrete locking bricks 31 layer by layer, leaving expansion joints between each layer when laying. The joints can be filled with polyethylene closed-cell foam boards to enable them to achieve thermal expansion and contraction while avoiding automatic closing;

[0039] S4, laying the first platform cap 4: After the locking brick layer 3 is laid, the rust-free welded gabion 51 is laid, and then the platform cap caulking 41 is backfilled with grout, and after backfilling, the first platform cap 4 is laid on top;

[0040] S5. Laying the honeycomb geocell: Lay the geotextile 14, and lay the first honeycomb geocell 5 on the top of the geotextile 14, set the top paving buffer section 61 at the top of the slope for buffering, and form the second honeycomb geocell 7 on the other side of the top of the slope. Set the foot paving buffer section at the foot of the second honeycomb geocell 7. After laying, nail T-shaped nails 13 are nailed in. The T-shaped nails 13 are distributed in an array on the first honeycomb geocell 5 and the second honeycomb geocell 7. They are laid in a row on the top paving buffer section 61 and the foot paving buffer section and inserted vertically into the lower part.

[0041] S6, laying the second cap 6: fill the interior of the slope top paving buffer section 61, i.e., the cell at the top of the slope with M10 cement mortar, and also pile up M10 cement mortar on the upper surface. After the accumulation, place the second cap 6 on top and build it on top, thus completing the laying of the second cap 6;

[0042] S7, construction of road 9: Construction of road 9 is carried out, and a corrugated guardrail 8 is installed on the side of road 9 close to the channel.

[0043] During actual construction, the rust-free welded gabion 51 can be laid first, and then the locking brick layer 3 and the honeycomb geocell can be laid simultaneously, which can greatly save construction time. That is, the rust-free welded gabion 51 is laid first, and then the locking brick layer 3 and the geotextile 14 are laid at the same time, and the first honeycomb geocell 5 is laid after the geotextile 14 is laid, and a top paving buffer section 61 is set at the top of the slope for buffering, and a second honeycomb geocell 7 is formed downslope on the other side of the top of the slope, and a slope foot paving buffer section is set at the slope foot of the second honeycomb geocell 7, and T-shaped nails 13 are nailed in after the laying is completed. After the process is completed, the cap grouting 41 is carried out for backfilling, and the first cap 4 is laid on the upper part after backfilling, and at the same time, M10 cement mortar is filled in the cell at the top of the slope, and M10 cement mortar is also piled on the upper surface. After piling, the second cap 6 is placed on the upper part. This construction method can reduce construction time, eliminate interference with other modules, and maintain structural stability. This approach is particularly effective for channel expansion and renovation, minimizing the impact of construction on operations. In fact, when the canal foundation dimensions are standardized and reasonable, all modules can be constructed simultaneously, significantly reducing construction time.

[0044] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An assembled ecological masonry structure suitable for canal sections with high groundwater levels, comprising a foundation and slope protection symmetrically arranged on both sides of the canal, characterized by: The foundation comprises a prefabricated slope foot (1) and a slope foot pad (2) arranged at the lower part of the prefabricated slope foot (1); the prefabricated slope foot (1) comprises a horizontally arranged lower slope foot (11) and an inclined upper slope foot (12) abutting against the outer side of the lower slope foot (11); the slope protection comprises a locking brick layer (3), a first platform cap (4), and a first honeycomb geocell (5); the locking brick layer (3) is arranged on the outer side of the upper slope foot (12); the first platform cap (4) is arranged on the outer side of the locking brick layer (3); and the first honeycomb geocell (5) is arranged on the outer side of the first platform cap (4).

2. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 1, characterized in that: The lower slope foot (11) and the upper slope foot (12) are both formed by splicing together slope foot modules, wherein the slope foot modules are provided with circular holes and pre-buried steel bar hanging ears; the locking brick layer (3) is formed by splicing together prefabricated concrete locking bricks (31), and the upper surface of the locking brick layer (3) is lower than the upper surface of the upper slope foot (12); the slope foot modules include A-type prefabricated slope foot (111), B-type prefabricated slope foot (112), C-type prefabricated slope foot (121) and D-type prefabricated slope foot (122), wherein the lower slope foot (11) is formed by staggered splicing of the A-type prefabricated slope foot (111) and the B-type prefabricated slope foot (112), and the upper slope foot (12) is formed by staggered splicing of the C-type prefabricated slope foot (121) and the D-type prefabricated slope foot (122).

3. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 1 is characterized in that: The top surface elevation of the downslope foot (11) is flush with the designed channel bottom elevation, the highest point of the top of the upslope foot (12) is higher than the normal water level in winter, the highest point of the top of the locking brick layer (3) is higher than the increased water level, and the lowest point of the bottom is lower than the designed water level.

4. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 1, characterized in that: The slope ratios of the upper slope foot (12), the locking brick layer (3) and the first honeycomb geocell (5) are all 1:2, and the width ratios of the lower slope foot (11), the upper slope foot (12) and the locking brick layer (3) are 0.4-0.5:1:0.8-0.

9.

5. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 1 is characterized in that: The slope protection also includes a second cap (6) and a second honeycomb geocell (7); the first honeycomb geocell (5) is upslope, and a top-laying buffer section (61) is provided at the top of the slope for buffering; a second honeycomb geocell (7) is formed downslope on the other side of the top of the slope; a foot-laying buffer section is provided at the foot of the slope of the second honeycomb geocell (7); geotextiles (14) are laid at the bottom of the first honeycomb geocell (5) and the top-laying buffer section (61), and the second honeycomb geocell (7) and the foot-laying buffer section, and T-shaped nails (13) perpendicular to the slope are uniformly distributed inside; a second cap (6) is provided on the upper part of the top-laying buffer section (61).

6. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 1, characterized in that: The prefabricated slope foot (1) is prefabricated from 300mm thick C35, F200, and W6 concrete; the slope foot cushion (2) uses natural graded gravel with a particle size of ≤20mm, a mud content of no more than 10%, and a relative density of no less than 0.

7.

7. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 1, characterized in that: The slope foot pad layer (2) comprises an inverted right-angled trapezoidal pad layer (21), a slope foot cross-sectional pad layer (22) and an equilateral triangular pad layer (23). The upper portion of the inverted right-angled trapezoidal pad layer (21) is flush with the designed channel bottom elevation, the slope ratio of the hypotenuse is 1:1, and the lower portion is flush with the lowest portion of the slope foot cross-sectional pad layer (22). The thickness of the slope foot cross-sectional pad layer (22) is 300 mm. It is directly opposite to the lower portion of the prefabricated slope foot (1). One right-angled side of the equilateral triangular pad layer (23) is in contact with the slope foot cross-sectional pad layer (22) and the outer sides of the upper slope foot (12), and the other right-angled side is in contact with the lower surface of the lock brick layer (3).

8. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 2, characterized in that: The concrete locking bricks (31) are prefabricated using C30, F200, and W6 concrete, and have a thickness of 150 mm. The height between the outer surface of the locking brick layer (3) and the outer surface of the upslope foot (12) is 50 to 100 mm.

9. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 5, characterized in that: The specification of the geotextile (14) is 200g / m 2 The lower cap caulking (41) of the first cap (4) is backfilled with C25 concrete. The first cap (4) and the second cap (6) are both prefabricated with C25 concrete. The interior of the slope top paving buffer section (61) and the gap with the second cap (6) are filled with M10 cement mortar. A rust-free welded gabion (51) is provided on the right side of the cap caulking (41). The rust-free welded gabion (51) is a rectangular parallelepiped structure, the upper surface of which is flush with the lower surface of the first cap (4), and the lower surface is lower than the geotextile (14) at the lower part of the first honeycomb geocell (5).

10. The assembled ecological masonry structure suitable for canal sections with high groundwater levels according to claim 1, characterized in that: A rust-free welded grid beam (10) is arranged on the slope protection every 10m along the direction of water flow; a road (9) is arranged outside the channel, a corrugated guardrail (8) is arranged on the side of the road (9) close to the channel, and the elevation of the road (9) is consistent with the bottom elevation of the second cap (6).

Images