CN220183938U - Rice straw mud slope protection structure of powdery soil river course - Google Patents
Rice straw mud slope protection structure of powdery soil river course Download PDFInfo
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- CN220183938U CN220183938U CN202321219754.7U CN202321219754U CN220183938U CN 220183938 U CN220183938 U CN 220183938U CN 202321219754 U CN202321219754 U CN 202321219754U CN 220183938 U CN220183938 U CN 220183938U
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Abstract
The utility model discloses a rice straw mud slope protection structure of a powdery soil river course, which comprises a powdery soil river course side slope, wherein the bottom end of the powdery soil river course side slope is connected with a river bottom, the top end of the powdery soil river course side slope is connected with a dyke top, a rice straw mud slope protection layer is arranged on the slope surface of the powdery soil river course side slope, the rice straw mud slope protection layer completely covers the slope surface of the powdery soil river course side slope, the bottom end of the rice straw mud slope protection layer is connected with the river bottom, and the top end of the rice straw mud slope protection layer is connected with the dyke top. The utility model utilizes the straw mud slope protection layer to protect the silty soil river slope, reduces the flushing and washing of water flow to the silty soil river slope, strengthens the soil cohesion of the silty soil river slope, improves the slip resistance of the silty soil river slope, and has simple construction and low cost.
Description
Technical Field
The utility model belongs to the technical field of hydraulic engineering and water and soil conservation, and particularly relates to a powdery soil riverway rice straw mud slope protection structure.
Background
The slope type river channel is a natural section form, is also a main section form pursuing nature and ecology in river channel design, and has the advantages of ecology and small investment. Traditional river course bank protection mainly uses the slurry masonry, dry masonry block stone bank protection or reinforced concrete bank protection etc. this kind of bank protection engineering cost is relatively higher to because it is the engineering under water, maintenance is difficult in the future.
In areas such as long triangles and bead triangles, most of the areas are alluvial plain, soil loosely deposited in the fourth period is widely piled up, and silty soil is distributed on the surface layer. When the side slope of the river is powdery soil, after the soil body is soaked and saturated by water, the hydrocolloid particles in the soil particles absorb water to expand and reduce the density of the soil particles, and under the action of dynamic water pressure, when the dynamic water pressure exceeds the gravity of the soil particles, the soil particles generate suspension flow, so that the quicksand is formed. In addition, as the soil layer of the river side slope contains the powdery soil, the permeability coefficient of the powdery soil is far greater than that of other soil layers, and the groundwater transversely flows out of the powdery soil, the powdery soil is poor in scouring resistance generally, so that when the river side slope is the powdery soil, the main problems of poor permeability stability, poor sliding resistance and poor scouring resistance of the river side slope exist.
After the river is excavated, the underwater permeable side slope bears the floating of water and the scouring erosion effect, and when the engineering area is in the flood stage, the river side slope level fluctuates frequently, when the river side slope level suddenly drops, due to the hysteresis of the dynamic change of the underground water level, larger osmotic pressure is easy to generate, a certain adverse effect is caused on the stability of the river side slope, meanwhile, the river side slope is continuously scoured by water flow, the powdery soil of the river side slope has smaller particle size and extremely easy flow, the water and soil loss of the river side slope is accelerated, thereby influencing the stability of the river side slope, simultaneously increasing the dredging workload of the river, and the river is required to be dredged once for 3-4 years, so that the financial resources are not processed by a large amount of sludge, the scouring of the river side slope is aggravated after dredging, the malignant circulation is formed, and the stability of the river side slope is continuously influenced.
In addition, if hard slope protection is adopted on the side slope of the urban river at present, the investment is increased, the growth of aquatic organisms is not facilitated, and after the pollutant of the river is obviously increased, the consumption speed of dissolved oxygen is greater than the natural reoxygenation speed of the river, so that aerobic microorganisms and facultative microorganisms gradually die, the river loses self-cleaning capacity, and the dynamic balance of the pollutant concentration of the river is destroyed, thereby the black and odorous phenomenon of the river can occur.
In summary, the current silt slope type river channel has two problems: firstly, the side slope of the powdery soil river channel is easy to be washed by water flow, and the water and soil loss is serious; secondly, the hard slope protection adopted for the river course at present has complex construction, high engineering cost and difficult later maintenance.
The patent CN102138428A discloses a vegetation restoration method of plant fiber blanket assisted by slurry spraying, which is characterized in that the plant fiber blanket is used for paving a slope surface, then slurry spraying is used for covering, and then a layer of plant fiber blanket is used for covering, so that tight connection between layers is impossible, and the investment is large and the construction is complex.
Disclosure of Invention
In view of the defects in the prior art, the utility model provides the rice straw mud slope protection structure for the powdery soil river course, which utilizes the rice straw mud slope protection layer to protect the side slope of the powdery soil river course, reduces flushing and washing of water flow on the side slope of the powdery soil river course, strengthens the soil cohesion of the side slope of the powdery soil river course, improves the slip resistance of the side slope of the powdery soil river course, and has simple construction and low cost.
The technical scheme adopted for solving the technical problems is as follows:
the utility model provides a powder soil river course rice straw mud slope protection structure, includes powder soil river course side slope, the bottom and the river bed of powder soil river course side slope are connected, the top and the dyke top of powder soil river course side slope are connected, be provided with straw mud slope protection layer on the domatic of powder soil river course side slope, straw mud slope protection layer covers the domatic of powder soil river course side slope completely, the bottom and the river bed of straw mud slope protection layer are connected, the top and the dyke top of straw mud slope protection layer are connected.
Further, the straw mud slope protection layer is formed by coagulated straw mud, the straw mud comprises mud, and straw fibers are dispersed in the mud.
Further, the length of the straw fiber is 30-80mm, the length-diameter ratio is 60-90, and the volume ratio of the straw fiber in the slurry is 1% -3%.
Further, the straw mud slope protection layer is formed by spraying the compacted powder soil river slope with high pressure at intervals, the formed straw mud slope protection layer comprises a plurality of straw mud slope protection blocks, each straw mud slope protection block is formed by spraying two layers, and the sprayed straw mud slope protection blocks comprise a first straw mud slope protection block layer and a second straw mud slope protection block layer.
Further, the second straw mud slope protection blocking layer is used for being sprayed on the coagulated first straw mud slope protection blocking layer, and the thicknesses of the first straw mud slope protection blocking layer and the second straw mud slope protection blocking layer are 10-20mm.
Further, the length and the width of each straw mud slope protection block are 2m, and the adjacent straw mud slope protection blocks are directly butted.
Further, grass seeds are added into the slurry of the second straw mud slope protection blocking layer, and the grass seeds germinate and form submerged plants or slope turf of the silty soil river slope.
Compared with the prior art, the utility model has the beneficial effects that:
the utility model relates to a rice straw mud slope protection structure of a powdery soil river course, which comprises a powdery soil river course side slope, wherein the bottom end of the powdery soil river course side slope is connected with a river bed, the top end of the powdery soil river course side slope is connected with a dyke top, a rice straw mud slope protection layer is arranged on the slope surface of the powdery soil river course side slope, the rice straw mud slope protection layer completely covers the slope surface of the powdery soil river course side slope, the bottom end of the rice straw mud slope protection layer is connected with the river bed, and the top end of the rice straw mud slope protection layer is connected with the dyke top; the straw mud slope protection layer can completely cover the slope surface of the whole silty soil river slope, can protect silty soil of the silty soil river slope surface from being washed by water flow, can reduce seepage water flow to destroy the silty soil river slope, and strengthen soil cohesion of the silty soil river slope, so that stability and safety of the silty soil river slope are ensured, in particular, the straw mud slope protection layer can increase adhesive force of the silty soil river slope surface, reduce seepage speed of the silty soil river slope, increase migration resistance of soil particles, further improve resistance of the silty soil river slope to water flow washing, improve sliding resistance of the silty soil river slope, and avoid soil loss of the silty soil river slope surface; in addition, the construction of arranging the straw mud slope protection layer on the slope surface of the silty soil river slope is simple, the manufactured straw mud slope protection layer not only meets the slope protection requirement of the silty soil river slope, but also can solve the influence of straw incineration on air quality, has double functions, has obvious environmental protection effect, and is low in cost of straw fibers, free of secondary pollution and environment-friendly and ecological.
In the utility model, the grass seeds are added into the slurry of the second straw mud slope protection blocking layer, the grass seeds germinate and form submerged plants or slope turf of the silty soil river slope, namely the formed straw mud slope protection layer is beneficial to the growth of aquatic plants and can create favorable conditions for aquatic animal breeding and perching and reproduction activities of amphibious animals, thereby having higher lifting effect on the river ecological system.
According to the utility model, the slope of the powdery soil river channel is protected by adopting the rice and grass mud, the rice and grass mud is flexible and is suitable for slope deformation, the rice and grass mud has water permeability, the drainage of the slope of the powdery soil river channel is not affected, and the soil intensity of the slope of the powdery soil river channel can be increased due to the effect of the rice and grass mud on the slope of the powdery soil river channel, so that the slope can be reduced, and the engineering quantity of river channel excavation is reduced.
Drawings
FIG. 1 is a schematic cross-sectional view of a powdery soil riverway straw mud slope protection structure;
fig. 2 is a schematic plan view of a block-spacing high-pressure injection of a powdery soil river course paddy soil and grass mud slope protection structure.
The reference numerals in the drawings illustrate: 1. the method comprises the steps of side slopes of a powdery soil river channel, 2 river bottoms, 3 embankment tops, 4 straw mud slope protection layers, 401 and straw mud slope protection blocks.
Detailed Description
The following describes the embodiments of the present utility model in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present utility model and are not intended to be limiting.
In the description of the present utility model, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, in the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.
As shown in fig. 1, the rice straw mud slope protection structure of the powdery soil river course comprises a powdery soil river course side slope 1, wherein the bottom end of the powdery soil river course side slope 1 is connected with a river bottom 2, the top end of the powdery soil river course side slope 1 is connected with a dike top 3, a rice straw mud slope protection layer 4 is arranged on the slope surface of the powdery soil river course side slope 1, the rice straw mud slope protection layer 4 completely covers the slope surface of the powdery soil river course side slope 1, the bottom end of the rice straw mud slope protection layer 4 is connected with the river bottom 2, and the top end of the rice straw mud slope protection layer 4 is connected with the dike top 3, wherein in fig. 1, A represents the elevation of the river bottom 2, and B represents the elevation of the dike top 3.
The rice straw mud slope protection layer 4 completely covers the slope surface of the whole powdery soil river course slope 1, the rice straw mud slope protection layer 4 can protect powdery soil on the slope surface of the powdery soil river course slope 1 from being washed by water flow, and can reduce seepage water flow to destroy the powdery soil river course slope 1 and strengthen soil cohesion of the powdery soil river course slope 1, so that stability and safety of the powdery soil river course slope 1 are ensured, specifically, the rice straw mud slope protection layer 4 can increase adhesive force of the slope surface of the powdery soil river course slope 1, reduce seepage velocity of the powdery soil course slope 1, increase migration resistance of soil particles, further improve resistance of the slope surface of the powdery soil river course slope 1 to water flow washing, improve sliding resistance of the powdery soil course slope 1 and avoid loss of the soil surface of the powdery soil river course slope 1; in addition, the construction of the rice straw mud slope protection layer 4 is simple, the manufactured rice straw mud slope protection layer 4 not only meets the slope protection requirement of the powdery soil river slope 1, but also can solve the influence of the incineration of rice straw on the air quality, and the method has the advantages of double functions, obvious environmental protection effect, low cost of rice straw fibers, no secondary pollution and environmental protection ecology.
In one embodiment of the present utility model, in one embodiment,
the rice straw mud slope protection layer 4 is formed by coagulated rice straw mud, the rice straw mud comprises mud, rice straw fibers are dispersed in the mud, the length of the rice straw fibers is 30-80mm, and the length-diameter ratio of the rice straw fibers is 60-90, so that the rice straw fibers can be uniformly distributed in the mud, and the volume ratio of the rice straw fibers in the mud is 1% -3%. After the straw fiber is added into the slurry, the bonding force of the slurry is improved through bridging action, and the performance of the slurry is improved, particularly the durability and deformation tolerance of the slurry can be improved, so that the toughness, impact resistance and tensile strength of the slurry are improved.
Grass seeds are added into the slurry of the second straw mud slope protection blocking layer, and the grass seeds germinate and form submerged plants or slope turf of the silty soil river slope 1. The formed straw mud slope protection layer 4 is beneficial to the growth of aquatic plants, and can create favorable conditions for the aquatic animal breeding and the perching and breeding activities of amphibious animals, thereby having higher lifting effect on the river ecological system.
In one embodiment, as shown in fig. 2, the straw mud revetment layer 4 is formed by spraying at a high pressure at intervals of blocks, the formed straw mud revetment layer 4 includes a plurality of straw mud revetment blocks 401, each straw mud revetment block 401 is formed by spraying two layers, the sprayed straw mud revetment blocks 401 include a first straw mud revetment block layer and a second straw mud revetment block layer, the second straw mud revetment block layer is used for spraying on the coagulated first straw mud revetment block layer, the thicknesses of the first straw mud revetment block layer and the second straw mud revetment block layer are 10-20mm, the lengths and the widths of the straw mud revetment blocks 401 are 2m, and adjacent straw mud revetment blocks 401 are directly butted.
Thus, for each straw mud slope protection block 401, the first straw mud slope protection block layer formed in a high-pressure spraying mode can be tightly adhered to the silty soil river slope 1, and the second straw mud slope protection block layer can be tightly adhered to the first straw mud slope protection block layer, so that the whole of the sprayed straw mud slope protection block 401 is tightly adhered to the silty soil river slope 1.
In addition, the rice straw mud slope protection layer 4 is formed by high-pressure spraying at intervals of blocks, namely after one rice straw mud slope protection block 401 is sprayed at one position of the slope surface of the powdery soil river slope 1, the other rice straw mud slope protection block 401 is sprayed at the other position which is spaced a certain distance from the position where the corresponding rice straw mud slope protection block 401 is positioned, and in addition, after the two rice straw mud slope protection blocks 401 which are distributed at intervals are both coagulated, the corresponding rice straw mud slope protection block 401 is sprayed at the position between the two rice straw mud slope protection blocks 401 which are distributed at intervals, so that the rice straw mud is not easy to flow.
The construction method of the straw mud slope protection structure of the powdery soil river course is a spraying construction method, wherein slurry in the straw mud can be manufactured on site by adopting a conventional mortar stirrer, the stirring is uniform, the on-site slurry allocation is determined according to the construction method, the sprayed slurry is not flowing, the clay in the slurry is preferably viscous soil, the straw fiber can be uniformly dispersed in the slurry, the slurry and water are added through a sieve shaker or a dispersing machine, the stirring is performed uniformly, and then the straw fiber is added and stirred, wherein the slope of the powdery soil river course slope 1 before construction needs to be leveled and cleaned, and the dry or semi-moist state is maintained.
The specific spray construction method comprises the following steps: the rice straw mud slope protection block 401 is sprayed at high pressure from the slope bottom to the block interval, taking spraying one of the rice straw mud slope protection block 401 as an example, loading the rice straw mud into a sprayer, conveying the rice straw mud to a spray head by using high pressure air, spraying the rice straw mud onto the slope surface of the powdery soil river slope 1 at high speed to form a first rice straw mud slope protection block layer, spraying the rice straw mud on the coagulated first rice straw mud slope protection block layer to form a second rice straw mud slope protection block layer, and coagulating both the first rice straw mud slope protection block layer and the second rice straw mud slope protection block layer to form the rice straw mud slope protection block 401, wherein the length and the width of the rice straw mud slope protection block 401 are 2m, the rice straw mud is connected with the river bottom 2 and level, and only construction joints are reserved between the rice straw mud slope protection blocks 401, namely, and direct butt joint construction is carried out between the adjacent rice straw mud slope protection blocks 401.
The straw mud slope protection structure of the powdery soil river course, which is formed in the utility model, belongs to a permanent structure, and the straw mud slope protection layer 4 can protect the powdery soil on the slope surface of the powdery soil river course side slope 1 from being washed by water flow, can reduce the seepage water flow to destroy the powdery soil river course side slope 1, and can strengthen the soil cohesion of the powdery soil river course side slope 1, thereby ensuring the stability and safety of the powdery soil river course side slope 1, and has the advantages of simple construction, low cost and environmental protection and ecology.
The foregoing is merely a preferred embodiment of the present utility model, and it should be noted that modifications and substitutions can be made by those skilled in the art without departing from the technical principles of the present utility model, and these modifications and substitutions should also be considered as being within the scope of the present utility model.
Claims (5)
1. A powder soil river course rice grass mud slope protection structure, its characterized in that: the soil-powder river course slope comprises a soil-powder river course slope (1), wherein the bottom end of the soil-powder river course slope (1) is connected with a river bottom (2), the top end of the soil-powder river course slope (1) is connected with a dike top (3), a straw mud slope protection layer (4) is arranged on the slope surface of the soil-powder river course slope (1), the straw mud slope protection layer (4) completely covers the slope surface of the soil-powder river course slope (1), the bottom end of the straw mud slope protection layer (4) is connected with the river bottom (2), and the top end of the straw mud slope protection layer (4) is connected with the dike top (3);
the straw mud slope protection layer (4) is formed by coagulated straw mud, the straw mud comprises mud, clay soil in the mud is clay soil, and straw fibers are dispersed in the mud;
the length of the straw fiber is 30-80mm, the length-diameter ratio is 60-90, and the volume ratio of the straw fiber in the slurry is 1% -3%.
2. The silt soil riverway rice straw mud slope protection structure according to claim 1, wherein: the straw mud slope protection layer (4) is formed by spraying at high pressure at intervals of blocks, the formed straw mud slope protection layer (4) comprises a plurality of straw mud slope protection blocks (401), each straw mud slope protection block (401) is formed by spraying two layers, and the formed straw mud slope protection blocks (401) comprise a first straw mud slope protection block layer and a second straw mud slope protection block layer.
3. A silty soil riverway rice straw mud slope protection structure according to claim 2, wherein: the second straw mud slope protection blocking layer is used for being sprayed on the coagulated first straw mud slope protection blocking layer, and the thicknesses of the first straw mud slope protection blocking layer and the second straw mud slope protection blocking layer are 10-20mm.
4. A silty soil riverway rice straw mud slope protection structure according to claim 2, wherein: the length and the width of each straw mud slope protection block (401) are 2m, and the adjacent straw mud slope protection blocks (401) are directly connected.
5. A silty soil riverway rice straw mud slope protection structure according to claim 3, wherein: grass seeds are added into the slurry of the second straw mud slope protection blocking layer, and the grass seeds germinate and form submerged plants or slope turf of the silty soil river slope (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321219754.7U CN220183938U (en) | 2023-05-19 | 2023-05-19 | Rice straw mud slope protection structure of powdery soil river course |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321219754.7U CN220183938U (en) | 2023-05-19 | 2023-05-19 | Rice straw mud slope protection structure of powdery soil river course |
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| Publication Number | Publication Date |
|---|---|
| CN220183938U true CN220183938U (en) | 2023-12-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321219754.7U Active CN220183938U (en) | 2023-05-19 | 2023-05-19 | Rice straw mud slope protection structure of powdery soil river course |
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| Country | Link |
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| CN (1) | CN220183938U (en) |
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2023
- 2023-05-19 CN CN202321219754.7U patent/CN220183938U/en active Active
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