CN111074844A - Construction method of ecological interlocking revetment of river channel - Google Patents
Construction method of ecological interlocking revetment of river channel Download PDFInfo
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- CN111074844A CN111074844A CN201911330714.8A CN201911330714A CN111074844A CN 111074844 A CN111074844 A CN 111074844A CN 201911330714 A CN201911330714 A CN 201911330714A CN 111074844 A CN111074844 A CN 111074844A
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Abstract
The invention relates to a construction method of ecological interlocking revetment of a river channel, which comprises the following steps: and (3) foot protection and top pressing construction: constructing and molding a grouted stone protection foot at the bottom of the slope soil body, and constructing and molding a concrete coping at the bottom of the slope soil body; leveling the side slope; laying a cushion layer: paving a sandstone cushion layer on the surface of the side slope soil body; laying geotextile: laying a reverse filter geotextile on the sandstone cushion layer; constructing a chain type slope protection layer: paving a chain type slope protection layer on the reverse filtering geotextile, wherein gaps are reserved between the bottom of the chain type slope protection layer and the inner side surface of the grouted stone toe guard and between the top of the chain type slope protection layer and the outer side surface of the concrete coping; filling and leveling broken bricks: filling broken masonry in the gap, and then leveling by using cement mortar to form a leveling layer; ecological layer construction: and planting flowers and plants or spreading flower seeds and grass seeds on the interlocked slope protection layer. The invention has the effects of saving the material cost of the whole project and preventing the arching phenomenon and the cracking phenomenon from occurring easily.
Description
Technical Field
The invention relates to the technical field of river course slope protection engineering, in particular to a river course ecological interlocking slope protection construction method.
Background
In the strengthening and treatment engineering of numerous medium and small rivers in China, the ecological interlocking slope protection is a commonly used strengthening structure, the ecological interlocking slope protection is generally formed by paving interlocking slope protection bricks, the anti-scouring capability of the ecological interlocking slope protection is strong, a complete surface layer is kept under high-speed water flow and other severe environments, the erosion of soil below can be prevented, the ecological interlocking slope protection is high in void ratio, good in water permeability, high in strength and high in compactness, grass can be planted between independent blocks and in gaps in the independent blocks, the environment is beautified, and a natural slope surface is formed to improve the ecological environment.
Retrieve chinese utility model patent that a bulletin number is CN209194459U now and disclose an ecological slope protection structure in river course, it relates to dykes and dams domatic structural technology field, aim at solving the domatic technical problem who produces the soil erosion and water loss easily among the prior art, its technical scheme main points include the bottom of a slope, domatic and hillside top, the bottom of a slope includes first concrete area and concrete slab, domatic including from supreme drainage geotechnological cloth layer, metalling and the chain brick layer of spreading to in proper order down, the top of a slope includes concrete pavement brick layer and second concrete area. In the construction process, a concrete slab and a concrete pavement brick are generally poured firstly, then after the chain brick layer is laid, the gap between the top of the slope and the concrete pavement brick is filled with concrete to form a second concrete belt, and the gap between the bottom of the slope and the concrete slab is filled with concrete to form a first concrete belt.
The above prior art solutions have the following drawbacks:
1. because bricks in the interlocking brick layer have irregularity, the width of the two gaps is wide and narrow, and the thickness of the bricks is large, so that more concrete is used for the second concrete belt and the first concrete belt, and the material cost of the whole project is increased;
2. chain brick layer can have certain expend with heat and contract with cold characteristic, and second concrete area and first concrete area solidification back do not have the deformation characteristic almost, and second concrete area and first concrete area do not have the expansion joint characteristics, and chain brick layer has the local position and probably appears arching phenomenon when temperature is high, and second concrete area and first concrete area probably appear the fracture phenomenon when temperature is low.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a river channel ecological interlocking slope protection construction method which has the advantages of saving the material cost of the whole project and being not easy to generate arching phenomenon and cracking phenomenon.
The above object of the present invention is achieved by the following technical solutions:
a construction method of ecological interlocking revetment of a river channel comprises the following steps:
and (3) foot protection and top pressing construction: constructing and molding a grouted stone protection foot at the bottom of the slope soil body, and constructing and molding a concrete coping at the bottom of the slope soil body;
and (3) side slope leveling treatment: removing roots, weeds and garbage on the surface of the side slope soil body, backfilling and compacting a sunken part of the side slope soil body with backfill, flattening a protruded part of the side slope soil body, leveling the surface of the side slope soil body and meeting the requirement of designing the slope of the side slope;
laying a cushion layer: paving a sand-stone cushion layer on the surface of the side slope soil body, wherein the thickness of the sand-stone cushion layer is 4-6 cm;
laying geotextile: laying a reverse filter geotextile on the sandstone cushion layer;
constructing a chain type slope protection layer: sequentially paving slope protection bricks on the reverse filter geotextile and forming a chain-type slope protection layer, wherein adjacent slope protection bricks are interlocked, holes for planting green plants are reserved on the slope protection bricks, and gaps are reserved between the bottom of the chain-type slope protection layer and the inner side surface of the grouted stone toe guard, and between the top of the chain-type slope protection layer and the outer side surface of the concrete coping;
filling and leveling broken bricks: filling broken bricks in the gap, then leveling by cement mortar to form a leveling layer, wherein the upper surface of the leveling layer at the top is flush with the upper surface of the concrete coping, and the upper surface of the leveling layer at the bottom is flush with the upper surface of the mortar stone foot protector;
ecological layer construction: planting flowers and plants or spreading flower seeds and grass seeds on the interlocked slope protection layer, and then watering and maintaining.
By adopting the technical scheme, the original concrete slab is replaced by the grouted stone protection leg, and the grouted stone protection leg is firmer and more stable relative to the concrete slab structure and has better soil retaining effect; secondly, the original concrete pavement brick is replaced by a concrete coping which is firmer and more stable in structure and more convenient to construct relative to the concrete pavement brick; furthermore, a chain-type slope protection layer is laid, the chain-type slope protection layer has the effects of filtering soil and draining water relative to a concrete surface slope protection structure, water in a roadbed can be freely drained, gaps are reserved at the top and the bottom of the chain-type slope protection layer and can be used for filling broken bricks and stones, and the gaps are matched with the broken bricks and stones to have the effect of expansion joints, so that the ecological chain-type slope protection of the river channel obtained by construction is not easy to crack or arch due to climate temperature changes (thermal expansion and cold contraction), the construction quality of the whole engineering is higher, and the cost of the broken bricks and stones is lower relative to the cost of concrete, so that the material cost of the whole engineering is saved, although the leveling layer is a thin layer, the leveling layer can level the uneven upper surface of the broken bricks and stones, and the attractiveness of the whole ecological chain-type slope protection of the river channel; the grit bed course cooperation is anti-strains geotechnological cloth, has good prevention of seepage and is passed through the effect, avoids too much rainwater infiltration to advance in the side slope soil body, makes the structure of the ecological chain bank protection of whole river course more firm.
The invention may in a preferred example be further configured such that the width of the gap is between 20-50 cm.
Through adopting above-mentioned technical scheme, the space of reserving is too narrow, is unfavorable for the staff to fill the garrulous masonry to this space fast, and the space of reserving is too wide, can make the width widen of screed-coat, because the screed-coat is the concrete material, so hardly plant green planting on the screed-coat, the screed-coat of broad can reduce the aesthetic measure and the construction quality of whole side slope, so the width control in space is between 20-50 centimetres, and is most reasonable and most suitable.
The invention can be further configured in a preferable example that the broken brick stones are broken bricks and/or graded broken stones, the broken bricks are slope protection bricks broken at a construction site, and the grain size of the graded broken stones is between 5 and 15 centimeters.
By adopting the technical scheme, part of the slope protection bricks can be crushed in a construction site, the time and the cost are relatively consumed for cleaning the crushed slope protection bricks, the crushed slope protection bricks can be directly applied and filled into the gaps, local materials are used for utilizing wastes, the construction cost is greatly saved, the crushed slope protection bricks can completely replace graded crushed stones, and certain material cost can be saved to a certain extent; the graded broken stone with the grain diameter is convenient to obtain materials and purchase, and has higher structural strength.
The present invention may be further configured in a preferred example such that a plurality of slope protection bricks are connected to form a block of interlocking mat by a rope, the slope protection bricks are provided with through holes at the same position, the rope passes through the through holes of adjacent slope protection bricks, and the block of interlocking mat is hoisted and laid by a hoist when the slope protection bricks are laid.
By adopting the technical scheme, single slope protection bricks are sequentially spliced one by one in a construction site, the time is relatively occupied, the efficiency is low, and the accuracy of the positions of the independent slope protection bricks is difficult to control accurately, so that a plurality of slope protection bricks are connected into a whole in advance by ropes, a production factory of the slope protection bricks can be made into a chain pavement mat in advance, the accuracy of the positions of the slope protection bricks can be ensured in advance by workers, the chain pavement mat can be transported to the construction site by vehicles and then lifted and installed by a crane, and the laying efficiency of the construction site is improved; the interlocking pavement pad can also prevent the single slope protection brick from being removed or stolen, and avoid the problem of unstable integral slope protection structure caused by the deletion of the single slope protection brick.
In a preferred example, the invention can be further configured that, during the construction of the curved river protection slope, two adjacent chain pavement pads are positioned in an overlapping way, then the excess slope protection bricks at the overlapping part are taken away, and then the excess ropes from the two adjacent chain pavement pads are knotted and fixed,
when the width of the gap at the joint of two adjacent interlocking paving pads is less than or equal to 5 cm, the gap can be ignored and is not processed; when the width of the gap at the joint of two adjacent interlocking pavement mats is larger than 5 cm, the gap is subjected to gap filling treatment by using water-permeable concrete.
Through adopting above-mentioned technical scheme, chain shop front pad generally all can make the rectangle structure of fixed size, under the crooked condition at the river course bank protection, the side of two adjacent chain shop front pads at crooked position just can't laminate (have certain angle between two sides), so take off overlap joint portion's unnecessary slope protection brick, can two adjacent chain shop front pads be close to a bit, make the gap width of seam crossing littleer, the gap of seam crossing generally presents for fan-shaped form, consequently the gap of seam crossing is located the top of slope position and can be wider, after the gap of this part broad is filled with infiltration nature concrete, can make whole domatic gap that is unlikely to the broad that appears, and is more pleasing to the eye, and is practical.
The invention in a preferred example can be further configured that the joint between two adjacent anti-filtering geotextiles is overlapped by at least 30 cm.
Through adopting above-mentioned technical scheme, when laying chain formula bank protection layer, can make anti-geotechnological cloth of straining appear slightly moving unavoidably, and great gap appears between two anti-geotechnological cloth of straining can be avoided to overlap joint length more than 30 centimetres to whole domatic anti-prevention of straining geotechnological cloth passes through the effect better.
The invention can be further configured in a preferred example that when flowers and plants are planted, a layer of natural soil is paved on the surface of the interlocked slope protection layer, and the flowers and plants are planted on the natural soil layer; and throwing the flower seeds and the grass seeds into the holes of the slope protection bricks, and filling the holes with planting soil.
By adopting the technical scheme, the natural soil is favorable for the grown flowers and plants to continue to survive, the planting soil is used for burying the flowers and the seeds in the holes of the slope protection brick, the flowers and the seeds can also be favorable for surviving, the phenomenon of particle shortage is not easy to occur after a period of time, and the grown ecological layer is more dense.
In a preferred example, the sand cushion layer is prepared from the following raw materials in parts by mass: 1 part of sand and 1 part of pebbles, wherein the fineness modulus of the sand is between 1.6 and 2.0, the particle size of the pebbles is between 5 and 20 millimeters, and the gravel cushion is compacted by a manual shovel after being paved and molded.
By adopting the technical scheme, the sandstone cushion layer prepared by the formula has a good supporting effect, is fine in texture and has good soil retaining and waterproof effects.
The invention can be further configured in a preferred example that the vertical section of the masonry bucket is a right trapezoid, the inner side surface of the masonry bucket is inclined downwards from outside to inside, and the outer side surface of the masonry bucket is kept vertical.
Through adopting above-mentioned technical scheme, the stone masonry banket bottom of this shape design is heavier, so its structure is more stable, be difficult for rocking, and stone masonry banket all has the effect that separates the fender to the side slope soil body, grit bed course and chain formula slope protection layer, prevents effectively that side slope soil body, grit bed course and chain formula slope protection layer from sliding down under the action of gravity, has promoted the steadiness of the ecological chain bank protection of whole river course.
In a preferred example, the invention can be further configured that an expansion joint is additionally arranged at every 9-11 meters of the grouted stone foot protector, and an expansion joint is additionally arranged at every 4-6 meters of the concrete roof pressure.
By adopting the technical scheme, the expansion joint can prevent the grouted stone foot protector and the concrete coping from generating cracks due to climate temperature change (thermal expansion and cold contraction), prolong the service life of the grouted stone foot protector and the concrete coping and improve the construction quality of the whole slope protection project.
In summary, the invention includes at least one of the following beneficial technical effects:
1. the interlocking type slope protection layer is laid, gaps are reserved at the top and the bottom of the interlocking type slope protection layer and can be used for filling broken bricks and stones, and the gaps are matched with the broken bricks and stones to achieve the effect of expansion joints, so that the ecological interlocking type slope protection of the river channel obtained through construction is not prone to cracking or arching due to climate temperature changes (thermal expansion and cold contraction), the construction quality of the whole project is higher, the cost of the broken bricks and stones is lower relative to concrete, the material cost of the whole project is saved, although the leveling layer is a thin layer, the leveling layer can level the uneven upper surface of the broken bricks and stones, and the attractiveness of the ecological interlocking type slope protection of the whole river channel is improved; the sandstone cushion layer is matched with the reverse filtration geotextile, so that the seepage-proof effect is good, excessive rainwater is prevented from permeating into the side slope soil body, and the structure of the ecological linked revetment of the whole river channel is firmer;
2. it can be broken to avoid having partial slope protection brick at the job site, and the clearance of these broken slope protection bricks also is than spending time and cost, and can directly use broken slope protection brick and fill in above-mentioned space, draw materials on the spot and utilize waste, has saved construction cost by a wide margin, and broken slope protection brick can replace the graded rubble completely, can save certain material cost to a certain extent.
Drawings
FIG. 1 is a schematic illustration of a construction flow according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an ecological chain revetment of a river constructed according to an embodiment of the invention;
FIG. 3 is an enlarged view at A in FIG. 2;
fig. 4 is a schematic view of the connection relationship between adjacent slope protection bricks in the embodiment of the present invention.
Reference numerals: 1. a slope soil body; 2. protecting feet by stone masonry; 3. pressing the concrete; 4. a sandstone cushion layer; 5. reversely filtering the geotextile; 6. a chain type slope protection layer; 61. slope protection bricks; 611. a hole; 612. perforating; 62. a rope; 7. breaking the bricks and stones; 8. and (4) leveling layer.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, the method for constructing ecological interlocking revetments of riverways disclosed by the invention comprises the following steps: the construction method comprises the steps of foot protection and top pressing construction S1, side slope leveling S2, cushion layer laying S3, geotextile laying S4, interlocking slope protection layer construction S5, broken brick stone 7 filling leveling S6 and ecological layer construction S7.
Step 4, foot protection and top pressing construction S1: the construction forming grouted stone toe guard 2 is constructed at the bottom of the side slope soil body 1, the construction forming concrete coping 3 is constructed at the bottom of the side slope soil body 1, and the concrete construction process can be as follows: and (3) well performing supporting work in the early stage, excavating a soil body, building a masonry protective foot 2 after a template is built, and pouring and molding concrete to press a roof 3. Firstly, the original concrete slab is replaced by the grouted stone protection feet 2, and the grouted stone protection feet 2 are firmer and more stable relative to the concrete slab structure and have better soil retaining effect; and secondly, the original concrete pavement brick is replaced by the concrete coping 3, and the concrete coping 3 is firmer and more stable in structure and more convenient to construct relative to the concrete pavement brick.
The vertical cross-section of stone masonry banket 2 is right trapezoid, the medial surface of stone masonry banket 2 is from outer to the internal slope downwards, the lateral surface of stone masonry banket 2 keeps vertical, 2 bottoms of stone masonry banket of this shape design are heavier, so its structure is more stable, be difficult for rocking, stone masonry banket 2 is to the side slope soil body 1, grit bed course 4 and interlock formula retaining layer 6 all have the effect that separates the fender, effectively prevent the side slope soil body 1, grit bed course 4 and interlock formula retaining layer 6 cunning down under the action of gravity, the steadiness of whole river course ecological chain bank protection has been promoted.
The distance between the grouted stone protection feet 2 and the concrete coping 3 can be 4 meters or 5 meters, the expansion joints can prevent the grouted stone protection feet 2 and the concrete coping 3 from generating cracks due to climate temperature changes (thermal expansion and cold contraction), the service lives of the grouted stone protection feet 2 and the concrete coping 3 are prolonged, and the construction quality of the whole slope protection project is improved.
Slope leveling processing S2: the method is characterized in that tree roots, weeds and garbage on the surface of the side slope soil body 1 are removed, the sunken part of the side slope soil body 1 is backfilled with backfill and compacted, the protruded part of the side slope soil body 1 is flattened, the surface of the side slope soil body 1 is leveled, and the requirement of designing the slope of the side slope is met. The treatment can make the surface of the slope clean, tidy and flat, and is convenient for subsequent laying of the sandstone cushion layer 4, the anti-filtration geotextile 5 and the laying of the slope protection brick 61.
Bedding laying S3: the sand-stone cushion layer 4 is laid on the surface of the side slope soil body 1, the thickness of the sand-stone cushion layer 4 is 5 cm, and the thickness can be 4 cm or 6 cm in other embodiments. The sandstone cushion layer 4 is prepared from the following raw materials in parts by mass: 1 part of sand and 1 part of pebbles, wherein the fineness modulus of the sand is between 1.6 and 2.0, the particle size of the pebbles is between 5 and 20 millimeters, and the sandstone cushion layer 4 is paved and molded and then is compacted by a manual shovel.
Geotextile laying S4: lay anti geotechnological cloth 5 of straining on grit bed course 4, the junction overlap joint 30 centimetres at least between two adjacent anti geotechnological cloth 5 of straining, when laying chain formula bank protection layer 6, can make anti geotechnological cloth 5 of straining appear slight removal unavoidably, and the overlap joint length more than 30 centimetres can avoid appearing great gap between two anti geotechnological cloth 5 of straining to whole domatic anti-prevention of straining geotechnological cloth 5 passes through the effect better.
And (5) constructing a chain type slope protection layer S5: slope protection bricks 61 are sequentially laid on the anti-filtration geotextile 5 and form a chain-type slope protection layer 6 (the detail of the slope protection bricks 61 is shown in figure 4 in the embodiment), adjacent slope protection bricks 61 are interlocked, holes 611 for planting green plants are reserved on the slope protection bricks 61, and gaps are reserved between the bottom of the chain-type slope protection layer 6 and the inner side of the grouted stone protection feet 2 and between the top of the chain-type slope protection layer 6 and the outer side of the concrete coping 3.
The width of the gap is 30 cm, and in other embodiments the width may be 20 cm, 25 cm, 35 cm, 40 cm, 45 cm, or 50 cm. The space of reservation is too narrow, is unfavorable for the staff to fill garrulous masonry 7 to this space fast, and the space of reservation is too wide, can make screed-coat 8's width widen, because screed-coat 8 is the concrete material, so hardly plant green planting on the screed-coat 8, and the screed-coat 8 of broad can reduce the aesthetic measure and the construction quality of whole side slope, so the width control in space is between 20-50 centimetres, and is most reasonable and most suitable.
An anchor rod can be implanted into the slope soil body 1 at intervals of about 5 meters on the interlocking slope protection layer 6, the anchor rod penetrates through a hole 611 of a slope protection brick 61, the top end of the anchor rod is located in the hole 611, and then the hole 611 is sealed by concrete, and the top end of the anchor rod is fixed with the slope protection brick 61.
Filling and leveling of broken masonry 7S 6: and filling broken masonry 7 in the gap, leveling the gap by using cement mortar to form a leveling layer 8, wherein the upper surface of the leveling layer 8 at the top is flush with the upper surface of the concrete coping 3 (shown in a combined manner in figures 2 and 3), and the upper surface of the leveling layer 8 at the bottom is flush with the upper surface of the masonry toe guard 2.
The broken brick stones 7 are concrete broken bricks, the broken bricks are slope protection bricks 61 broken in a construction site, in other embodiments, the broken brick stones 7 can be all graded broken stones, in other embodiments, the broken brick stones 7 can also be broken bricks and graded broken stones, and the grain size of the graded broken stones is between 5 and 15 centimeters. The broken slope protection bricks 61 can be directly applied and filled into the gaps, local materials are used for utilizing waste, construction cost is greatly saved, the broken slope protection bricks 61 can completely replace graded broken stones, and certain material cost can be saved to a certain extent; the graded broken stone with the grain diameter is convenient to obtain materials and purchase, and has higher structural strength.
Ecological layer construction S7: planting flowers and plants or spreading flower seeds and grass seeds on the interlocked slope protection layer 6, and then watering and maintaining. When planting flowers and plants, firstly paving a layer of natural soil on the surface of the interlocked slope protection layer 6, and planting the flowers and plants on the natural soil layer; flower seeds and grass seeds are thrown into the holes 611 of the slope protection bricks 61, and then the holes 611 are filled with planting soil. The natural soil is beneficial to the survival of the grown flowers and plants, the planting soil is also beneficial to the survival of the flowers and seeds and the grass seeds by burying the flowers and the grass seeds in the holes 611 of the slope protection brick 61, the phenomenon of particle shortage is not easy to occur after a period of time, and the grown ecological layer is more dense.
As shown in fig. 2 and 4, a plurality of slope protection bricks 61 are connected to form a single interlocking mat by ropes 62, the slope protection bricks 61 are provided with through holes 612 at the same position, the ropes 62 pass through the through holes 612 of the adjacent slope protection bricks 61, and when the slope protection bricks 61 are laid, the interlocking mats are hoisted and laid one by a crane. At a construction site, the time is occupied when the single slope protection bricks 61 are sequentially spliced one by one, the efficiency is low, and the accuracy of the positions of the independent slope protection bricks 61 is not easy to control accurately, so that a plurality of slope protection bricks 61 are connected into a whole in advance by ropes 62, and a production factory of the slope protection bricks 61 can be made into a chain pavement mat in advance, so that workers can ensure the accuracy of the positions of the slope protection bricks 61 in advance, the chain pavement mat can be transported to the construction site by vehicles and then lifted by a crane for installation, and the laying efficiency of the construction site is improved; the interlocking pavement pads can also prevent the single slope protection bricks 61 from being removed or stolen, and avoid the problem of unstable integral slope protection structure caused by the loss of the single slope protection bricks 61.
When the bent river course protection slope is constructed, two adjacent chain pavement pads are firstly lapped and positioned, then the redundant protection slope bricks 61 at the lapped part are taken off, and then the redundant ropes 62 from the two adjacent chain pavement pads are knotted and fixed, when the width of a gap at the joint of the two adjacent chain pavement pads is less than or equal to 5 cm, the gap can be ignored and is not processed; when the width of the gap at the joint of two adjacent interlocking pavement mats is larger than 5 cm, the gap is subjected to gap filling treatment by using water-permeable concrete. Chain shop front pad generally can all make the rectangle structure of fixed size, under the crooked condition at the river course bank protection, the side of two adjacent chain shop front pads at crooked position just can't laminate (there is certain angle between two sides), so take off overlap joint's unnecessary slope protection brick 61, can two adjacent chain shop front pads be close to a bit, make the gap width of seam crossing littleer, the gap of seam crossing generally presents for fan-shaped, consequently, the gap of seam crossing is located the top of slope position and can be wider, after the gap of this part broad is filled with infiltration nature concrete, can make whole domatic gap that is unlikely to the broad that appears, and is more pleasing to the eye, and is practical.
The implementation principle of the embodiment is as follows: the interlocking type slope protection layer 6 is laid, the interlocking type slope protection layer 6 has the effects of filtering soil and draining water relative to a concrete surface slope protection structure, water in a roadbed can be freely drained, gaps are reserved at the top and the bottom of the interlocking type slope protection layer 6 and can be used for filling broken bricks and stones 7, and the gaps are matched with the broken bricks and stones 7 to have the effect of expansion joints, so that the ecological interlocking type slope protection of the river channel obtained by construction is not prone to cracking or arching due to climate temperature changes (thermal expansion and cold contraction), the construction quality of the whole engineering is higher, the broken bricks and stones 7 are lower relative to concrete cost, the material cost of the whole engineering is saved, the leveling layer 8 is a thin layer, the leveling layer 8 can level the uneven upper surface of the broken bricks and stones 7, and the attractiveness of the ecological interlocking type slope protection of the whole river channel is improved; gravel cushion layer 4 cooperates and inversely filters geotechnological cloth 5, has good prevention of seepage and passes through the effect, avoids too much rainwater to permeate into side slope soil body 1 in, makes the structure of the chain bank protection of whole river course ecology more firm.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (10)
1. A construction method for ecological interlocking revetment of a river channel is characterized by comprising the following steps:
and (3) foot protection and top pressing construction: constructing and forming a grouted stone protective foot (2) at the bottom of the side slope soil body (1), and constructing and forming a concrete coping (3) at the bottom of the side slope soil body (1);
and (3) side slope leveling treatment: removing tree roots, weeds and garbage on the surface of the side slope soil body (1), backfilling and compacting a sunken part of the side slope soil body (1) by using backfilled soil, flattening a protruded part of the side slope soil body (1), leveling the surface of the side slope soil body (1) and meeting the requirement of designing the slope of the side slope;
laying a cushion layer: paving a sand-stone cushion layer (4) on the surface of the side slope soil body (1), wherein the thickness of the sand-stone cushion layer (4) is 4-6 cm;
laying geotextile: laying a reversed filter geotextile (5) on the sandstone cushion layer (4);
constructing a chain type slope protection layer: sequentially paving slope protection bricks (61) on the reverse filtering geotextile (5) to form a chain-type slope protection layer (6), wherein adjacent slope protection bricks (61) are interlocked, holes (611) for planting green plants are reserved on the slope protection bricks (61), and gaps are reserved between the bottom of the chain-type slope protection layer (6) and the inner side surface of the grouted stone toe guards (2) and between the top of the chain-type slope protection layer (6) and the outer side surface of the concrete coping (3);
filling and leveling broken masonry (7): filling broken masonry (7) in the gap, then leveling by cement mortar to form a leveling layer (8), wherein the upper surface of the leveling layer (8) at the top is flush with the upper surface of the concrete coping (3), and the upper surface of the leveling layer (8) at the bottom is flush with the upper surface of the masonry toe guard (2);
ecological layer construction: planting flowers and plants or spreading flower seeds and grass seeds on the interlocked slope protection layer (6), and then watering and maintaining.
2. The construction method of the ecological interlocking revetment of the river according to claim 1, wherein the width of the gap is between 20 cm and 50 cm.
3. The construction method of ecological interlocking revetment of river channel according to claim 1, wherein the crushed brick stones (7) are crushed bricks and/or graded crushed stones, the crushed bricks are slope protection bricks (61) crushed at construction site, and the grain size of the graded crushed stones is between 5 cm and 15 cm.
4. The ecological interlocking revetment construction method according to claim 1, wherein a plurality of revetment bricks (61) are connected into an interlocking mat by ropes (62), the revetment bricks (61) are provided with through holes (612) at the same position, the ropes (62) pass through the through holes (612) of adjacent revetment bricks (61), and when the revetment bricks (61) are laid, the interlocking mat is hoisted and laid one by a crane.
5. The construction method of ecological interlocking revetment according to claim 4, wherein when constructing a curved revetment, two adjacent interlocking decking pads are positioned in an overlapping manner, then the excess revetment bricks (61) at the overlapping portion are removed, and then the excess ropes (62) from the two adjacent interlocking decking pads are knotted and fixed,
when the width of the gap at the joint of two adjacent interlocking paving pads is less than or equal to 5 cm, the gap can be ignored and is not processed; when the width of the gap at the joint of two adjacent interlocking pavement mats is larger than 5 cm, the gap is subjected to gap filling treatment by using water-permeable concrete.
6. The construction method of the ecological interlocking revetment for the riverway according to claim 1, wherein the joint between two adjacent reversed filter geotextiles (5) is overlapped by at least 30 cm.
7. The construction method of the ecological interlocking revetment according to claim 1, wherein when planting flowers and plants, a layer of natural soil is paved on the surface of the interlocking revetment layer (6), and the flowers and plants are planted on the natural soil layer; throwing the flower seeds and the grass seeds into the holes (611) of the slope protection bricks (61), and filling the holes (611) with planting soil.
8. The construction method of the ecological interlocking revetment for the river according to claim 1, wherein the sand-rock cushion layer (4) is prepared from the following raw materials in parts by mass: 1 part of sand and 1 part of pebbles, wherein the fineness modulus of the sand is between 1.6 and 2.0, the particle size of the pebbles is between 5 and 20 millimeters, and the gravel cushion (4) is paved and molded and then is compacted by a manual shovel.
9. The construction method of the ecological interlocking revetment for the river according to claim 1, wherein the vertical section of the grout stone protection leg (2) is a right trapezoid, the inner side surface of the grout stone protection leg (2) is inclined downwards from outside to inside, and the outer side surface of the grout stone protection leg (2) is kept vertical.
10. The construction method of ecological interlocking revetment of river course according to claim 1, wherein an expansion joint is added every 9-11 m for the grout stone guard leg (2), and an expansion joint is added every 4-6 m for the concrete coping (3).
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| CN113832917A (en) * | 2021-11-08 | 2021-12-24 | 河南露旭建设集团发展有限公司 | River course slope protection laying construction method for hydraulic engineering |
| CN115467293A (en) * | 2022-10-24 | 2022-12-13 | 江苏山水环境建设集团股份有限公司 | Interlocking precast concrete block canal construction method |
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Application publication date: 20200428 |