CN111350198B - Slope trenching greening scour prevention system and construction method thereof - Google Patents

Slope trenching greening scour prevention system and construction method thereof Download PDF

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CN111350198B
CN111350198B CN202010160510.0A CN202010160510A CN111350198B CN 111350198 B CN111350198 B CN 111350198B CN 202010160510 A CN202010160510 A CN 202010160510A CN 111350198 B CN111350198 B CN 111350198B
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slope
greening
salix matsudana
water collecting
soil
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CN111350198A (en
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周波
马涛
王彦武
田晋华
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Lanzhou Soil And Water Conservation Scientific Experiment Station Of Gansu Water Resources Department (institute On Soil And Water Conservation Gansu Province)
Lanzhou Jiaotong University
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Lanzhou Soil And Water Conservation Scientific Experiment Station Of Gansu Water Resources Department (institute On Soil And Water Conservation Gansu Province)
Lanzhou Jiaotong University
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/20Securing of slopes or inclines
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B79/00Methods for working soil
    • A01B79/02Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G17/00Cultivation of hops, vines, fruit trees, or like trees
    • A01G17/005Cultivation methods
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B3/00Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
    • E02B3/04Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
    • E02B3/12Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/20Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2

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  • Life Sciences & Earth Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Environmental Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Structural Engineering (AREA)
  • Soil Sciences (AREA)
  • Paleontology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Botany (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Cultivation Of Plants (AREA)

Abstract

The invention provides a slope surface ditch cutting greening scour prevention system and a construction method thereof, wherein the slope surface ditch cutting greening scour prevention system comprises a slope change arranged on a slope, a water collecting area is arranged in the slope change, a row of sand-blocking shrubs are respectively arranged at the front end and the rear end of the water collecting area in the slope direction from low to high, salix matsudana piles wound and connected by connecting and fixing ropes and arranged in a polygon shape are inserted into a soil body of the water collecting area, a nutrition rod buried into the soil body is arranged in the center of the salix matsudana pile, and the nutrition rod is composed of a shell with a fertilizer outlet hole formed in the surface and an inner cavity filled with ecological matrix fertilizer. The invention has convenient construction and reasonable unit layout, has excellent greening and scour prevention capability, simultaneously has ecological and environment-friendly slope and ditch cutting ecological environment recovery function, can be used for a long time without manual intervention, can give play to benefits persistently, is beneficial to weakening the problem of high water source sand content in high sand-containing water source areas, and is suitable for treating water and soil loss in slopes, ditches and channels.

Description

Slope trenching greening scour prevention system and construction method thereof
Technical Field
The invention belongs to the technical field of water and soil conservation, and particularly relates to a slope trenching greening scour prevention system and a construction method thereof.
Background
At present, the erosion undercut of the channel in loess plateau areas in China is severe, the erosion of the cut groove of the slope and the channel is undercut, great influence is generated on the instability of the slope and the channel, the water and soil loss in the slope and the channel is serious, and the generated high-sand-content water flows converge into the river channel, so that the sediment content of the river channel is increased. The slope surface trenching treatment is an important part for trench treatment and trench bed fixation, and the slope surface trenching treatment reduces the convergence of slope surface trenching production, prevents the bottom of the trench from being undercut, stabilizes an erosion base point, and further greatly reduces the trench erosion and the trench bank collapse.
The sand blocking dam, the siltation dam and the check dam are main measures for channel treatment, and the sand blocking dam and the siltation dam are mostly built in a main ditch or a larger branch ditch and are not suitable for treatment of slope ditch cutting. The check dam is generally arranged in a small branch ditch and can be applied to slope ditch cutting and scour prevention treatment, but the mortar stone check dam has large investment and is very inconvenient to arrange a drainage channel during construction; the two side banks of the dry masonry check dam are seriously scoured, the top is easy to damage, and the investment is small but the management is inconvenient; the erosion resistance of the soil check dam is poor, and the soil check dam is easy to damage under the condition of heavy rainstorm.
The biological check dam integrates engineering and plants, has the advantages of low investment, good protection effect, obvious ecological benefit and the like, is widely applied to treatment of water and soil loss of a trench, however, the biological check dam has the following defects that firstly, the layout of the biological check dam and the density of a biological fence transversely planted in the trench are not suitable to be controlled, the planting is too thin, the effects of reducing flow and reducing speed are not achieved, the planting is too dense, the resistivity is too high, and the biological check dam is easy to be washed; secondly, biological fences are transversely arranged and are connected with one another and fixedly covered by biological branches in a staggered mode, water flow can scour soil on the upstream and the downstream of the check dam, the scouring behind the check dam is mainly used, the scouring degree and the scouring strength are large, the check dam is collapsed and scoured due to instability of the foundation, the safety is not high, the preservation rate is low when the check dam is singly laid, the check dam and the check dam need to be laid continuously, and the total engineering quantity is large; thirdly, the biological check dam is only suitable for channel management under certain rainfall and soil water and fertilizer conditions, and the laid biological measures are not suitable for survival and cannot achieve the expected purpose for the trenching with less rainfall and insufficient soil fertility; and fourthly, the biological check dam is laid by considering the channel flow collecting characteristic, and the joint is laid from the ditch head to the ditch tail, so that the biological check dam is suitable for the channel protection of branch ditches and has no advantages on the treatment of slope ditch cutting and the ditch head protection. Therefore, the treatment of slope trenching still has a plurality of difficulties and problems to be solved.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a slope surface ditch cutting greening scour prevention system and a construction method thereof aiming at the defects of the prior art, the slope surface ditch cutting greening scour prevention system is convenient to construct, has reasonable unit layout, has excellent greening scour prevention capability, simultaneously has ecological and environment-friendly slope surface and ditch cutting ecological environment recovery functions, can be used for a long time without manual intervention, can give a lasting benefit, is favorable for weakening the problem of high water source sand content in high sand water source areas, and is suitable for treating water and soil loss in slopes, ditches and ditches.
In order to solve the technical problems, the invention adopts the technical scheme that: a slope surface ditch cutting greening scour prevention system comprises a slope change arranged on a slope way, wherein a water collection area is formed in the slope change, a row of sand-blocking shrubs are respectively arranged at the front end and the rear end of the water collection area in the slope direction from low to high, salix matsudana piles which are wound and connected by connecting and fixing ropes and are arranged in a polygonal mode are inserted into a soil body of the water collection area, a nutrition rod buried into the soil body is arranged in the central position of the salix matsudana piles in the water collection area, and the nutrition rod is composed of an outer shell with a fertilizer outlet hole formed in the surface and an inner cavity filled with ecological matrix fertilizer; the salix matsudana stake is a viable willow.
Preferably, the water collection area is basin-shaped; the nutrition bar is located at the deepest position of the water collection area.
Preferably, the top end of the nutrition bar is provided with a handle, and the bottom of the nutrition bar is conical; the shell of the nutrition bar is made of degradable materials.
Preferably, the slope change gradient is reduced by 0-5 degrees relative to the original slope surface.
Preferably, the salix matsudana stake is a live salix matsudana stake with a columnar structure and a sharpened bottom end, the diameter of the live salix matsudana stake is 4 cm-8 cm, the tree age of the live salix matsudana stake is 3 years-5 years, the dry salix matsudana stake is inserted into soil body for 30 cm-50 cm, and the soil body of the dry salix matsudana stake is 100 cm-120 cm.
Preferably, the depth of the deepest position of the water collecting area is 10 cm-30 cm; the area of the water collecting area is 3-5 times of the area of the salix matsudana stakes arranged in a polygonal mode.
Preferably, the ecological matrix fertilizer is prepared from the following raw materials in parts by weight: 40 parts of cultivated soil, 15 parts of decomposed crop straws, 13 parts of decomposed corncob cores, 10 parts of organic fertilizer, 2 parts of water-retaining agent and 20 parts of water.
Preferably, the sand-blocking shrubs are sea buckthorn or chaste tree twigs.
Preferably, the connection and fixation rope is woven by degradable fiber fabrics.
The invention also provides a construction method of the slope trenching greening scour prevention system, which comprises the following steps:
s1, excavating and changing slopes: excavating each point on the slope surface, which is prepared for greening and scour prevention construction at the groove bottom, and reducing the gradient of the point to obtain a variable slope;
s2, construction of a water collecting area: excavating a water collecting area in the variable slope obtained in the S1, and performing soil embankment stacking compaction on the front edge of the variable slope, wherein the height of the soil embankment is higher than or equal to the height of the rear edge of the variable slope;
s3, planting the salix matsudana stake: inserting the active willow stumps with the columnar structures, the bottom ends of which are sharpened, and the auxin is coated on the active willow stumps according to polygonal distribution into the soil body of the water collecting area obtained in the step S2 to obtain the dry willow stumps which are arranged in a polygonal mode;
s4, installation of a connecting and fixing rope: sequentially winding the connecting and fixing ropes on the parts, exposed out of the ground, of the salix matsudana stakes obtained in the step S3 to fix the salix matsudana stakes; after the salix matsudana stumps survive and root systems grow and are connected to form a whole, disconnecting the fixed ropes;
s5, arranging the nutrition bars: inserting the nutrition rod into the soil body in the center of the salix matsudana stakes which are arranged in a polygonal shape and obtained in the S3, filling the ecological matrix fertilizer into the inner cavity of the nutrition rod, compacting and compacting, wherein the top of the nutrition rod is lower than the ground surface, and the periphery of the nutrition rod is compacted by the soil body;
s6, planting sand-blocking shrubs: planting sand-blocking shrubs at the front end and the rear end of the water collecting area obtained in the step S1 along the gradient direction, and finally obtaining a slope ditch-cutting greening scour prevention system; the slope trenching greening scour prevention system is constructed in spring.
In a gully region of a hilly land of a loess plateau, the down-cutting degree of the cut gully erosion of the slope and the gully is directly related to whether trees exist in the gully or not, particularly, the gully which is longitudinally and continuously distributed with a single row of dry willow trees with the diameter of more than 30 centimeters is relatively stable, which is related to that the trunk is intermittently divided to block runoff, the runoff scouring force is reduced, and the root system of the trees is fixed with soil. The method can simulate the natural system to control the slope surface ditch cutting erosion, has the technical difficulty that how to quickly form a continuous big tree system under the condition of runoff erosion, firstly uses a plurality of small drought willow stems which are easy to survive to form an annular structure to resist the runoff erosion, secondly arranges the channels to collect and store water, improves the soil fertility and promotes the quick growth of the drought willow, thirdly arranges the channels along with the land and plants sand-blocking shrubs to slow down the initial stage ditch cutting erosion and provides a certain time guarantee for the survival growth of the drought willow. According to the above principle, the slope trenching greening scour prevention system is provided.
Compared with the prior art, the invention has the following advantages:
1. the method utilizes the salix matsudana stumps and the sand-blocking shrubs to realize greening scour prevention of slope cutting and slope restoration; the slope surface ditch cutting greening scour prevention technology is constructed in spring, under the rainfall condition, the ditch cutting is stabilized and the scouring damage is prevented through slope changing, a water collecting area, sand blocking shrubs and connecting and fixing ropes in the early stage, and time is won for the growth and development of the salix matsudana piles; the nutrition bars and the water collecting area are used for providing nutrients for the salix matsudana stumps and the sand-blocking shrubs to promote the rapid growth of root systems of the salix matsudana stumps and the sand-blocking shrubs, rainwater and sand-blocking particles carried by the rain-blocking shrubs are intercepted through energy dissipation of the sand-blocking shrubs, the nutrients are provided for the growth of the salix matsudana stumps and the sand-blocking shrubs after prediction, the sand-blocking shrubs are used for stably protecting the salix matsudana stumps and channels which do not play a role by utilizing the advantage that the sand; the downward-seeping rainwater is stored through the water collecting area, and sediments such as silt carried by water flow rich in nutrient substances are deposited, so that water and nutrients are provided for the growth of the salix matsudana peg; realize consolidating stably in earlier stage to the salix matsudana stake through connecting fixed rope, after salix matsudana stake root system soil structure links together, through the increase of salix matsudana stake diameter, connect the extension of fixed rope winding section, the linkage segment shrink, the fixed rope fracture of connection drops in certain intensity range, and then can not further restrict the growth of salix matsudana stake to the nourishment of salix matsudana stake growth is regarded as to the fixed connection rope that drops.
2. The invention has convenient construction and reasonable unit layout, has excellent greening and scour prevention capability, simultaneously has ecological and environment-friendly slope and ditch cutting ecological environment recovery function, can be used for a long time without manual intervention, can give play to benefits persistently, is beneficial to weakening the problem of high water source sand content in high sand-containing water source areas, and is suitable for treating water and soil loss in slopes, ditches and channels.
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a top view of the present invention (in the figure, the arrow a is in a direction of changing slope from high to low).
Fig. 3 shows the salix matsudana stakes arranged in a polygon shape.
Fig. 4 is a schematic structural view of the nutritional bar of the present invention.
Description of reference numerals:
1, changing slopes; 2-a water collecting area; 3, blocking sand and shrubs;
4-salix matsudana stake; 5, connecting a fixed rope; 6-nutrition bar;
61-a housing; 62-inner cavity; 63-fertilizer outlet;
64-handle.
Detailed Description
As shown in fig. 1-4, the slope trenching greening scour prevention system of the embodiment includes a variable slope 1 arranged on a slope, a water collection area 2 is arranged in the variable slope 1, a row of sand-blocking shrubs 3 are respectively arranged at the front end and the rear end of the water collection area 2 in the slope direction from low to high, the length of the row of sand-blocking shrubs is not less than the diameter of the water collection area 2, salix matsudana piles 4 wound and connected by connecting fixing ropes 5 are inserted into the soil body of the water collection area 2, a nutrition rod 6 buried into the soil body is arranged at the center position of the salix matsudana pile 4 in the water collection area 2, and the nutrition rod 6 is composed of a shell 61 with fertilizer outlet holes 63 formed in the surface and an inner cavity 62 filled with ecological matrix fertilizer; the salix matsudana stake 4 is a living salix matsudana.
In this embodiment, the water collecting region 2 is basin-shaped; the nutrition bar 6 is located at the deepest position of the water collection area 2.
In this embodiment, the top end of the nutrition bar 6 is provided with a handle 64, and the bottom is conical; the shell 61 of the nutrition bar 6 is made of degradable materials, and the degradable materials are degradable plastics or wood materials.
In this embodiment, the gradient of the variable slope 1 is reduced by 0 to 5 degrees relative to the original slope surface.
In the embodiment, the salix matsudana stake 4 is a live salix matsudana stake with a diameter of 4 cm-8 cm and a tree age of 3 years-5 years and a tapered bottom end, the salix matsudana stake 4 is inserted into the soil body by 30 cm-50 cm, and the salix matsudana stake 4 is inserted outside the soil body by 100 cm-120 cm.
In the embodiment, the depth of the deepest position of the water collecting area 2 is 10 cm-30 cm; the area of the water collecting area 2 is 3-5 times of the area of the salix matsudana stakes 4 which are arranged in a polygonal mode.
In the embodiment, the ecological matrix fertilizer is prepared from the following raw materials in parts by weight: 40 parts of cultivated soil, 15 parts of decomposed crop straws, 13 parts of decomposed corncob cores, 10 parts of organic fertilizer, 2 parts of water-retaining agent and 20 parts of water.
In this embodiment, the sand-blocking shrubs 3 are sea buckthorn or chaste tree twigs.
In this embodiment, connect fixed rope 5 and weave by degradable fabric and form, after the soil structure of 4 root systems of the wooden stake of salix matsudana links together, through the increase of 4 diameters of the wooden stake of salix matsudana, connect the 5 winding sections expansions of fixed rope, the linkage segment shrink connects 5 fracture drops of fixed rope at certain intensity within range, and then can not further restrict the growth of wooden stake of salix matsudana 4 to the fixed connection rope that drops can degrade as the nourishment of the wooden stake of salix matsudana 4 growth.
The embodiment also provides a construction method of the slope trenching greening scour prevention system, which comprises the following steps:
s1, excavating a variable slope 1: excavating each point on the slope surface, which is prepared for greening and scour prevention construction at the groove bottom, and reducing the gradient of the point to obtain a variable slope 1;
s2, construction of a water collecting area 2: excavating a water collecting area 2 in the variable slope 1 obtained in the S1, and performing soil embankment stacking compaction on the front edge of the variable slope 1, wherein the height of the soil embankment is higher than or equal to the height of the rear edge of the variable slope;
s3, planting the salix matsudana stake 4: inserting the active willow stumps with the columnar structures, the bottom ends of which are sharpened, and the auxin is coated on the active willow stumps according to polygonal distribution into the soil body of the water collecting area 2 obtained in the step S2 to obtain the dry willow stumps 4 which are arranged in a polygonal mode;
s4, installation of the connecting and fixing rope 5: sequentially winding the connecting and fixing ropes 5 to connect the parts of the salix matsudana stumps 4 obtained in the step S3, which are exposed out of the ground, and fixing the salix matsudana stumps 4; after each salix matsudana stake 4 survives and root systems develop and are connected to form a whole, disconnecting the fixing rope 5;
s5, arranging the nutrition bar 6: inserting the nutrition bar 6 into the soil body in the center of the salix matsudana stakes 4 which are arranged in a polygonal shape and obtained in the step S3, filling the ecological matrix fertilizer into the inner cavity 62 of the nutrition bar 6, compacting and compacting, wherein the top of the nutrition bar 6 is lower than the ground surface, and the periphery of the nutrition bar 6 is compacted by the soil body;
s6, planting sand-blocking shrubs 3: and planting the sand-blocking shrubs 3 at the front end and the rear end of the water collecting area 2 obtained in the step S1 along the gradient direction, and finally obtaining the slope ditch-cutting greening scour prevention system.
The slope trenching greening scour prevention system is constructed in spring.
At the slope surface ditch cutting position, a plurality of slope surface ditch cutting greening scour protection systems of the embodiment are constructed and arranged in an S shape, and water loss and soil erosion can be treated.
The working protection principle of the slope trenching greening scour prevention system provided by the embodiment of the invention is as follows:
the method utilizes the salix matsudana stumps 4 and the sand-blocking shrubs 3 to realize greening scour prevention and slope restoration of slope cutting ditches; the slope surface ditch cutting greening scour prevention technology is constructed in spring, under the rainfall condition, the ditch cutting is stabilized and the scouring damage is prevented through a slope 1, a water collecting area 2, two rows of sand-blocking shrubs 3 and a connecting fixing rope 5 in the early stage, and time is won for the growth and development of the salix matsudana stake 4; the nutrition bar 6 and the rainwater collected by the water collection area 2 provide nutrients and moisture for the salix matsudana piles 4 and the sand-blocking shrubs 3 to promote the rapid growth of root systems of the salix matsudana piles, the two rows of sand-blocking shrubs 3 intercept rainwater and the rainwater carrying silt particles to enter the water collection area 2, the advantage that the sand-blocking shrubs 3 grow and develop rapidly is utilized, the sand-blocking shrubs 3 are used for stably protecting the salix matsudana piles 4 and channels which do not play a role of growing, and time is provided for the growth of the salix matsudana piles 4; the downward-seeping rainwater is stored through the water collecting area 2, and sediments such as silt carried by water flow rich in nutrient substances are deposited, so that water and nutrients are provided for the growth of the salix matsudana peg 4; connect fixed rope 5 and realize consolidating stably 4 earlier stages of salix matsudana stake, after 4 root system soil structures of salix matsudana stake link together, the increase of 4 diameters of salix matsudana stake connects 5 winding sections expansions, and the linkage segment shrink connects 5 fracture drops of fixed rope at certain intensity within range, can not further restrict the growth of salix matsudana stake 4 to the fixed connection rope that drops can degrade as the nourishment that the salix matsudana stake 4 grows. When the salix matsudana stake 4 grows large enough and the root system is deep enough, the soil fixation and sand prevention effects are realized, so that the slope trenching greening and scouring prevention system has the greening and sand scouring prevention effects on the slope trenching from the beginning to the growth year by year, the protection effect is increased year by year, and the stability year by year.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.

Claims (10)

1. A slope surface ditch cutting greening scour prevention system is characterized by comprising a variable slope (1) arranged on a slope way, wherein a water collecting area (2) is formed in the variable slope (1), a row of sand-blocking shrubs (3) are respectively arranged at the front end and the rear end of the water collecting area (2) in the slope direction from low to high, salix matsudana piles (4) which are wound and connected by connecting and fixing ropes (5) and are arranged in a polygonal mode are inserted into soil bodies of the water collecting area (2), a nutrition rod (6) buried into the soil bodies is arranged at the central position of the salix matsudana pile (4) of the water collecting area (2), and the nutrition rod (6) is composed of a shell (61) with fertilizer outlet holes (63) formed in the surface and an inner cavity (62) filled with ecological matrix fertilizer; the salix matsudana stake (4) is a viable willow.
2. A slope trenching greening scour protection system according to claim 1, wherein the catchment area (2) is basin-shaped; the nutrition bar (6) is located at the deepest position of the water collection area (2).
3. The slope grooving, greening and scour prevention system of claim 1, wherein a handle (64) is arranged at the top end of the nutrition bar (6), and the bottom of the nutrition bar is conical; the shell (61) of the nutrition bar (6) is made of degradable materials.
4. A slope trenching greening scour protection system according to claim 1, wherein the slope of the slope-changing slope (1) is reduced by 0-5 ° relative to the original slope.
5. The slope trenching greening scour protection system according to claim 1, wherein the salix matsudana stakes (4) are live salix stakes with a cylindrical structure and a sharpened bottom end, the diameter of each of the live salix matsudana stakes is 4 cm-8 cm, the tree age of each of the live salix matsudana stakes is 3 years-5 years, the salix matsudana stakes (4) are inserted into soil of 30 cm-50 cm, and the outside of the soil of the salix matsudana stakes (4) is 100 cm-120 cm.
6. The slope trenching greening scour protection system according to claim 1, wherein the depth of the deepest position of the water collection area (2) is 10 cm-30 cm; the area of the water collecting area (2) is 3-5 times of the area of the salix matsudana stakes (4) which are arranged in a polygonal shape.
7. The slope ditching and greening scour prevention system of claim 1, wherein the ecological matrix fertilizer is prepared from the following raw materials in parts by weight: 40 parts of cultivated soil, 15 parts of decomposed crop straws, 13 parts of decomposed corncob cores, 10 parts of organic fertilizer, 2 parts of water-retaining agent and 20 parts of water.
8. The slope trenching greening scour protection system of claim 1, wherein the sand-blocking shrubs (3) are sea buckthorn or chaste tree twigs.
9. The slope grooving, greening and scour prevention system of claim 1, wherein the connecting and fixing rope (5) is woven from degradable fiber fabric.
10. A construction method of the slope grooving, greening and scour prevention system as claimed in any one of claims 1 to 8, wherein the method comprises:
s1, excavating and slope changing (1): excavating each point on the slope surface, which is prepared for greening and scour prevention construction at the groove bottom, and reducing the gradient of the point to obtain a variable slope (1);
s2, construction of a water collecting area (2): excavating a water collecting area (2) in the variable slope (1) obtained in the S1, and performing soil embankment stacking compaction on the front edge of the variable slope (1), wherein the soil embankment height is higher than or equal to the height of the rear edge of the variable slope;
s3, planting the salix matsudana stake (4): inserting the active willow stumps with the columnar structures, the bottom ends of which are sharpened, and the growth elements are coated on the active willow stumps into the soil body of the water collecting area (2) obtained in the step S2 according to polygonal distribution to obtain the dry willow stumps (4) which are arranged in a polygonal shape;
s4, installation of the connecting and fixing rope (5): sequentially winding the connecting and fixing ropes (5) to connect the parts of the salix matsudana stumps (4) obtained in the step S3, which are exposed out of the ground, and fixing the salix matsudana stumps (4);
s5, arranging the nutrition bar (6): inserting the nutrition rod (6) into the soil body in the center of the salix matsudana stakes (4) which are arranged in a polygonal shape and obtained in the step S3, filling an ecological matrix fertilizer into an inner cavity (62) of the nutrition rod (6) and compacting, wherein the top of the nutrition rod (6) is lower than the ground surface, and the periphery of the nutrition rod (6) is compacted by the soil body;
s6, planting sand-blocking shrubs (3): planting sand-blocking shrubs (3) at the front end and the rear end of the water collecting area (2) obtained in S1 along the gradient direction to finally obtain a slope ditch-cutting greening scour prevention system; the slope trenching greening scour prevention system is constructed in spring.
CN202010160510.0A 2020-03-10 2020-03-10 Slope trenching greening scour prevention system and construction method thereof Active CN111350198B (en)

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