Ecological slope protection structure of saline-alkali land ditch and construction method thereof

Abstract

The application provides a saline-alkali soil ditch ecological slope protection structure and a construction method thereof, and relates to the technical field of saline-alkali soil treatment.The saline-alkali soil ditch ecological slope protection structure comprises a ditch, the ditch has a slope, a vegetation blanket is laid on the slope, and the vegetation blanket is fixed by using slope protection fixing pieces.The slope protection fixing pieces have two structural forms, one of which is a first fixing piece, which is a cross-shaped structure formed by vertical bamboo poles and horizontal bamboo poles;the first fixing piece is used in cooperation with an intercepting bamboo pole and a bamboo stick;the other is a second fixing piece, which is a structure formed by a hollow outer rod, an inner rod, a barbed rod and a pressing rod;the construction method of the saline-alkali soil ditch ecological slope protection structure comprises the following steps: S1, repairing the slope surface of the slope;S2, laying the vegetation blanket on the slope surface;S3, fixing the vegetation blanket;S4, maintaining the vegetation blanket;and the application provides a saline-alkali farmland ditch slope ecological stabilization technology for the problems of bare saline-alkali slope, difficult vegetation recovery and easy collapse.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of saline-alkali soil treatment, in particular to a saline-alkali soil ditch ecological slope protection structure and a construction method thereof. BACKGROUND

[0002] In the development of saline-alkali soil, ditch irrigation and drainage engineering measures are basic engineering. The saline-alkali soil in the Yellow River Delta is formed by the impact of the Yellow River, and the soil is young, the soil structure is not stable enough, the soil is soft, the consolidation is poor, and the natural recovery of the herbaceous vegetation on the ditch slope is slow. During this period, the ditch slope is prone to collapse under the action of rainfall erosion and freezing and thawing. Therefore, ditch collapse has always been a key factor affecting the sustained development of land development project benefits. Ditch slope collapse prevention and ecological restoration have always been a major problem in the development and utilization of saline-alkali soil in the middle and lower reaches of the Yellow River plain.

[0003] Therefore, in view of the problems of bare saline-alkali slope, difficult vegetation recovery, easy collapse, and serious restriction on efficient development and utilization and ecological construction of saline-alkali soil, it is urgent to construct an ecological and stable technology for saline-alkali farmland ditch slope. SUMMARY

[0004] The present application aims to at least solve one of the technical problems in the related art. To this end, the present application proposes a saline-alkali soil ditch ecological slope protection structure and a construction method thereof.

[0005] The technical solution of the present application to solve the technical problem is as follows:

[0006] In a first aspect, the present application proposes a saline-alkali soil ditch ecological slope protection structure, which comprises a ditch, the ditch has a slope, a vegetation blanket is laid on the slope, the vegetation blanket is fixed by the slope protection fixing piece to form a slope fixing system; wherein: the slope protection fixing piece is a first fixing piece or a second fixing piece.

[0007] When the slope protection fixing piece is the first fixing piece, the first fixing piece comprises a vertical bamboo pole and a horizontal bamboo pole, the pole body of the vertical bamboo pole is provided with a through hole; the horizontal bamboo pole is provided with a slot, the width of the slot is greater than the diameter of the vertical bamboo pole; the horizontal bamboo pole can freely penetrate the through hole, in use, the horizontal bamboo pole and the vertical bamboo pole form a cross-shaped structure; the slot and the through hole are engaged;

[0008] When the slope fixing member is the second fixing member, the second fixing member comprises a hollow outer rod, the inside of the hollow outer rod is a hollow structure; at least one first inclined hole is formed on the periphery of the hollow outer rod, a barb rod used as a barb is inserted into the first inclined hole, the barb rod has a first node for blocking and limiting; one end of the barb rod is inserted into the inside of the hollow outer rod, and the other end is arranged outside the barb rod; both ends of the barb rod are inclined, forming a first inclined end and a second inclined end respectively; the inner rod is further included, the bottom end of the inner rod is also inclined, when the inner rod is inserted into the inside cavity of the hollow outer rod, the barb rod is extruded by the inner rod and extends outward, forming a barb structure.

[0009] Preferably, the bottom end of the vertical bamboo pole has an inclined sharp part.

[0010] Preferably, the horizontal bamboo pole and the vertical bamboo pole are made of salt-tolerant bamboo.

[0011] Preferably, the method further comprises a blocking bamboo pole used in cooperation with the first fixing member, the blocking bamboo pole is arranged between two adjacent groups of the first fixing member; a plurality of insertion holes are formed on the blocking bamboo pole along the length direction, both ends of the blocking bamboo pole can be respectively inserted into and connected with the corresponding horizontal bamboo poles on both sides; a fixing stick is inserted into the insertion hole.

[0012] Preferably, at least one second inclined hole is formed on the periphery of the hollow outer rod, the second inclined hole is located above the first inclined hole; a pressing rod is inserted into the second inclined hole, for pressing and fixing the vegetation blanket, the pressing rod has a second node for blocking and limiting.

[0013] Preferably, the hollow outer rod is a bamboo pole; the inner rod is a willow pole.

[0014] In the second aspect, the construction method of the ecological slope protection structure of the saline-alkali soil ditch is provided, based on the ecological slope protection structure of the saline-alkali soil ditch, the method comprises the following steps:

[0015] S1: the slope surface is repaired;

[0016] S2: the vegetation blanket is laid on the slope surface: the vegetation blanket is laid naturally and smoothly on the slope of the saline-alkali soil ditch;

[0017] S3: the vegetation blanket is fixed: the vegetation blanket is fixed by using the slope fixing member; the specific method is:

[0018] If the slope fixing member used is the first fixing member, the method is:

[0019] S3-d1: the horizontal bamboo pole is inserted into the through hole of the vertical bamboo pole, forming a cross-shaped structure;

[0020] S3-d2: Strike the vertical bamboo pole with a hammer head, and the vertical bamboo pole pierces the vegetation blanket and inserts into the soil of the slope. Continue to strike the vertical bamboo pole until the horizontal bamboo pole is pressed on the surface of the vegetation blanket, and the fixing of the point is completed;

[0021] S3-d3: Repeat the above process to complete the installation of multiple first fixing members;

[0022] If the slope protection fixing member used is a second fixing member, there are two methods:

[0023] ① The first method:

[0024] S3-q1: Insert the barb rod into the first inclined hole to complete the assembly of the barb rod and the hollow outer rod;

[0025] S3-q2: Strike the hollow outer rod with the barb rod to make the hollow outer rod pierce the vegetation blanket and insert into the soil of the slope. Continue to strike until the barb rod also enters the soil of the slope;

[0026] S3-q3: Insert the inner rod into the hollow outer rod, and strike the inner rod downward. The outer wall of the inner rod will extrude the barb rod, so that the barb rod slides along the first inclined hole away from the center line of the hollow outer rod. The barb rod is inserted into the soil to form a barb structure and improve the anchoring force;

[0027] S3-q4: Repeat the above process to complete the installation of multiple second fixing members;

[0028] ② The second method:

[0029] S3-t1: Insert the barb rod into the first inclined hole to complete the assembly of the barb rod and the hollow outer rod;

[0030] S3-t2: Strike the hollow outer rod with the barb rod to make the hollow outer rod pierce the vegetation blanket and insert into the soil of the slope. Continue to strike until the barb rod also enters the soil of the slope;

[0031] S3-t3: Insert the pressing rod into the second inclined hole, and continue to strike the hollow outer rod to make the hollow outer rod drive the pressing rod to move downward until the bottom end of the pressing rod presses and fixes the vegetation blanket. Finally, insert the inner rod into the hollow outer rod, and strike the inner rod downward. The outer wall of the inner rod will extrude the barb rod, so that the barb rod slides along the first inclined hole away from the center line of the hollow outer rod. The barb rod is inserted into the soil to form a barb structure and improve the anchoring force. Repeat the above process to complete the installation of multiple second fixing members;

[0032] S4: Vegetation blanket maintenance: After the installation of the vegetation blanket is completed, water is poured for maintenance according to the growth requirements of the plants.

[0033] Preferably, the method of fixing the slope by using the first fixing member in S3 further comprises:

[0034] S3-q5: Install the intercepting bamboo pole between two adjacent first fixing members arranged transversely along the slope surface; when installing, first insert one end of the intercepting bamboo pole into one lateral bamboo pole, then slightly bend the intercepting bamboo pole by utilizing the elasticity of the intercepting bamboo pole, then smoothly insert the other end of the intercepting bamboo pole into the corresponding lateral bamboo pole, and complete the insertion and fixing of the two ends of the intercepting bamboo pole and the lateral bamboo pole;

[0035] S3-q6: Insert the fixing peg into the insertion hole of the intercepting bamboo pole, and knock the fixing peg until the bottom end of the fixing peg is inserted into the soil of the slope, and the multi-point fixing of the intercepting bamboo pole is completed;

[0036] S3-q7: Repeat the above process to complete the installation of other intercepting bamboo poles, and the intercepting bamboo poles divide the blanket surface of the vegetation blanket into several small area units.

[0037] The above technical scheme has the following advantages or beneficial effects:

[0038] 1. The salt and alkali land ditch ecological slope protection structure adopts the form of vegetation blanket + slope protection fixing member, the vegetation blanket contains grass seeds, and a slope protection grass system can be constructed after the grass seeds grow, the "plant anchor rod" formed by the slope protection fixing member, the ecological system of "grass-bamboo-willow" is constructed, a perfect multiple protection structure is formed, vegetation planting is realized, water and soil loss is effectively prevented, the salt and alkali ecological environment is improved, the formation of a micro ecological system is gradually promoted, and then a firm revetment slope protection structure is formed; meanwhile, the operation is simple, the construction is convenient, and the cost is low.

[0039] 2. The slope protection fixing member is made of natural plants, resources are abundant, and the taking and making are convenient and low in cost; construction is rapid and convenient, the root system and vegetation are generated after cutting of the bamboo or willow, the "plant anchor rod" is formed, good slope fixing effect can be realized, water and soil loss is effectively prevented, the plants grow vigorously in the later period, and the ecological ditch has stronger erosion resistance; while realizing good greening function, the soil and water conservation function is also good, it is green and environmentally friendly, and has good economic value and ecological value.

[0040] 3. The second fixing member adopts the combined mode of hollow outer rod + barb rod + pressing rod + inner rod, the barb rod can effectively improve the overall tensile and pulling resistance, and is not easy to fall off; the pressing rod can effectively press and fix the vegetation blanket; the overall structure is simple, resources are abundant, and the natural plants resistant to salt and alkali are adopted, the "bamboo-willow" root system can be constructed after cutting and germination, the strong slope fixing structure can be formed by utilizing the developed root system of bamboo-willow, and the fixing effect is more obvious.

[0041] 4. The first fixing member is further matched with intercepting bamboo pole, which can play two roles, one is that the intercepting bamboo pole matched with the fixed sign can increase the fixed area of the vegetation blanket and increase the reinforcement of the vegetation blanket; the second is that the intercepting bamboo pole can divide the blanket surface of the vegetation blanket to form a plurality of small area units arranged horizontally, and the intercepting bamboo pole can play a certain intercepting role, which can slow down the slope runoff when it rains heavily, and the layer-by-layer obstruction reduces the scouring force on the blanket surface, thereby protecting the blanket surface; in addition, the fixed sign is made of bamboo or willow sign, and when the bamboo or willow sign sprouts and roots, it can form a 'plant anchor rod' to increase the fixation of the soil and effectively prevent collapse. BRIEF DESCRIPTION OF DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0043] Figure 1 is the structure of the first fixing member after combination.

[0044] Figure 2 is the structure of the first fixing member when not combined.

[0045] Figure 3 is the line frame diagram of the first fixing member after combination.

[0046] Figure 4 is the split structure diagram of the second fixing member.

[0047] Figure 5 is the structure of the hollow outer rod, barb rod and pressure holding rod.

[0048] Figure 6 is the state diagram of the second fixing member when in use.

[0049] Figure 7 is the sectional view of the ecological slope protection structure of saline-alkali soil ditch (using the first fixing member).

[0050] Figure 8 is Figure 7 is the enlarged view of the E area structure in

[0051] Figure 9 is the top view of the first fixing member when used with the intercepting bamboo pole.

[0052] Figure 10 is the structure diagram of the fixed sign.

[0053] Figure 11 is a sectional view of the ecological slope protection structure of saline-alkali soil ditch (using the second fixing member).

[0054] Figure 12 is Figure 11 is an enlarged view of the F area structure.

[0055] Figure 13 is a structural schematic view of the vegetation blanket.

[0056] Explanation of reference signs:

[0057] 1, saline-alkali soil; 2, ditch; a, first fixing member; a1, vertical bamboo pole; a2, horizontal bamboo pole; a11, sharp part; a12, through hole; a21, notch; a3, intercepting bamboo pole; a4, fixing sign; b, second fixing member; b1, hollow outer rod; b11, first inclined hole; b12, second inclined hole; b2, inner rod; b3, barbed rod; b31, first bamboo joint; b4, pressing rod; b41, second bamboo joint; c, vegetation blanket; c1, solid net; c2, seed layer; c3, fiber layer; c4, nutrient; c5, bottom net. DETAILED DESCRIPTION

[0058] In order to make the purpose, features and advantages of the present application more obvious and easy to understand, the technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the embodiments described below are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0059] It should be noted that, in the description of the present application, the terms indicating the direction or position relationship such as "upper", "lower", "left", "right", "inner" and "outer" are based on the direction or position relationship shown in the drawings, which is only for the convenience of description, and does not indicate or imply that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0060] In addition, it should also be noted that, in the description of the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. Those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0061] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0062] Example 1:

[0063] like Figure 1 - Figure 3 As shown, this embodiment proposes a slope protection fixing member for serving as an anchor. The slope protection fixing member is a first fixing member a, and the structure of the first fixing member a is as follows:

[0064] The first fixing member a includes a vertical bamboo pole a1 and a horizontal bamboo pole a2. The vertical bamboo pole a1 has a through hole a12 on its pole body; the horizontal bamboo pole a2 has a notch a21, the width of the notch a21 is greater than the diameter of the vertical bamboo pole a1; the horizontal bamboo pole a2 can freely pass through the through hole a12, and when in use, the horizontal bamboo pole a2 and the vertical bamboo pole a1 form a cross structure; the notch a21 is engaged with the through hole a12.

[0065] The first fixing member a is entirely made of bamboo, a salt- and alkali-tolerant variety such as red bamboo, iron bamboo, and dragon bamboo, which are suitable for cultivation in saline-alkali soil 1. The holes a12 are drilled using a drilling device, and the notches a21 are formed using a cutting device, simplifying fabrication. The vertical bamboo poles a1 primarily serve as cutting supports, while the horizontal bamboo poles a2 primarily provide a holding area, increasing the holding area to better secure the surface of the vegetation blanket c.

[0066] In order to be smoothly inserted into the soil, the bottom end of the vertical bamboo pole a1 has an oblique spike portion a11, which can be formed by chopping it obliquely with a knife.

[0067] In this embodiment, the interior of the horizontal bamboo pole a2 is a hollow structure.

[0068] like Figure 9 - Figure 10 As shown, this embodiment also includes an intercepting bamboo pole a3 used in conjunction with the first fixing member a, and the intercepting bamboo pole a3 is arranged between two adjacent groups of first fixing members a; the intercepting bamboo pole a3 is provided with a plurality of spaced-apart insertion holes along the length direction, and the two ends of the intercepting bamboo pole a3 can be respectively inserted and connected with the corresponding horizontal bamboo poles a2 on both sides.

[0069] To further enhance the stability of the intercepting bamboo pole a3, a fixing stick a4 is inserted into the corresponding insertion hole of the intercepting bamboo pole a3. In this embodiment, the fixing stick a4 can be made of plant materials, such as bamboo sticks or willow sticks. The fixing stick a4 has a conical structure with a pointed bottom, which can effectively penetrate the soil. With the large end at the top, it can press and fix the intercepting bamboo pole a3.

[0070] Example 2:

[0071] As Figure 4 - Figure 6 As shown in the drawings, the present embodiment proposes another slope protection fixing member, which is used as an anchor and is a second fixing member b. The second fixing member b comprises a hollow outer rod b1, and the inside of the hollow outer rod b1 is hollow. At least one first inclined hole b11 is formed on the periphery of the hollow outer rod b1, and a barb rod b3 used as a barb is inserted into the first inclined hole b11. The barb rod b3 has a first node b31 for blocking and limiting. One end of the barb rod b3 is inserted into the inside of the hollow outer rod b1, and the other end is arranged outside the barb rod b3. Both ends of the barb rod b3 are inclined, forming a first inclined end and a second inclined end, respectively. The second fixing member b further comprises an inner rod b2, and the bottom end of the inner rod b2 is also inclined. When the inner rod b2 is inserted into the internal cavity of the hollow outer rod b1, the barb rod b3 is extruded by the inner rod b2 and extends outward to form a barb structure.

[0072] In use, the first inclined hole b11 is located in the soil below the vegetation blanket c, and is used to form a barb structure with the barb rod b3 to improve the pull-out and tensile resistance.

[0073] In the present embodiment, the first node b31 arranged on the barb rod b3 is arranged near the left end of the barb rod b3. The purpose of this arrangement is that when the barb rod b3 is inserted into the first inclined hole b11, most of the barb rod b3 is located inside the hollow outer rod b1. In this way, the part of the barb rod b3 exposed outside is very small, and when the barb rod b3 is inserted into the soil along with the hollow outer rod b1, the resistance can be reduced. When the barb rod b3 is extruded by the inner rod b2, the main body of the barb rod b3 can also extend out of the hollow outer rod b1 to the maximum extent to form a longer barb structure, effectively improving the tensile and pull-out resistance. This design ensures that the resistance is small when inserted into the soil, and the length is long after insertion into the soil to increase the moment arm.

[0074] Embodiment Three:

[0075] Considering that the second fixing member b in Embodiment Two has good tensile and pull-out resistance, but the pressing and holding capacity of the blanket surface is limited, further improvements are made.

[0076] Continuing to refer to Figure 4 - Figure 6 , the slope protection fixing member proposed in the present embodiment further comprises the following structure based on Embodiment Two:

[0077] The hollow outer rod b1 is provided with at least one second inclined hole b12 on the periphery, the second inclined hole b12 is located above the first inclined hole b11; the second inclined hole b12 is matched with the press rod b4 inserted, for realizing the press fixing of the vegetation blanket c, the press rod b4 has the second bamboo joint b41, for realizing the blocking and limiting.

[0078] In the embodiment, the first inclined hole b11 is inclined upward, the second inclined hole b12 is inclined downward, and the inclination directions of the two are opposite.

[0079] Beneficial effect: the second fixing part b adopts the combined mode of hollow outer rod b1 + barbed rod b3 + press rod b4 + inner rod b2, the barbed rod b3 can effectively improve the overall tensile and anti-pulling capacity, and is not easy to fall off; the press rod b4 can realize the effective press fixing of the vegetation blanket c; the overall structure is simple, the resources are rich, the natural plants resistant to saline-alkali are adopted, after cutting and germination, the "bamboo-willow" root system can be constructed, the developed root system of bamboo-willow can form a strong slope fixing structure, and the fixing effect is more obvious.

[0080] In the embodiment, the press rod b4 and the barbed rod b3 are made of suitable bamboo; it should be noted that the second bamboo joint b41 on the press rod b4 is arranged at a position close to the right end of the press rod b4, the purpose of the arrangement is to shorten the length of the press rod b4 entering the inside of the hollow outer rod b1 as much as possible, and to make most of the press rod b4 outside as much as possible, so that the negative interference on the inner rod b2 can be effectively prevented.

[0081] It should be noted that the hollow outer rod b1 is a bamboo pole; the inner rod b2 is a willow pole. The hollow outer rod b1 can be processed and made of salt-tolerant bamboo varieties; for example, in recent years, Liaocheng City actively carries out bamboo germplasm resource evaluation and good seed selection, promotes the construction of northern bamboo germplasm resource library, and provides high-quality seed source and technical support for the development of northern bamboo. It actively carries out introduction and cultivation technology innovation, solves the technical bottlenecks such as poor adaptability of "south bamboo northward migration" through a large number of cold resistance, drought resistance, salt and alkali resistance tests, and accumulates mature cultivation technology of "south bamboo northward migration"; Liaocheng City carries out bamboo saline-alkali land remediation in saline-alkali and waterlogged land in Dongchang Lake scenic area, successfully breeds salt-tolerant bamboo varieties, and the once abandoned saline-alkali and waterlogged land has become today's bamboo sea park - Baichu Garden. The bamboo pole in the embodiment can be selected from salt-tolerant bamboo varieties in the "south bamboo northward migration" technology. The inner rod b2 can be selected from salt-tolerant willow poles, such as salt willow No. 1. Salt willow No. 1 is a new variety selected from dozens of experimental willow species by Shandong Academy of Forestry in Dongying coastal saline-alkali land 1 after more than ten years of experimental research. The variety is derived from the shrub North Salix in the desert, has strong resistance and strong adaptability, can tolerate 0.6% of salt-alkali, is drought-tolerant, and is also water-tolerant, while inheriting the characteristics of North Salix such as drought tolerance, poor soil tolerance, and disease and insect resistance.

[0082] Through the above three embodiments, it can be seen that the slope protection fixings designed by the present invention are made of natural plants, which are rich in resources, easy to obtain and manufacture, and low in cost; the construction is fast and convenient, and the roots and vegetation are generated after the bamboo or willow cuttings are used to become "plant anchors", which can achieve good slope consolidation and effectively prevent soil and water loss. The plants grow vigorously in the later period, and the ecological ditch has a stronger anti-scouring ability; while achieving good greening functions, it plays a good soil and water conservation function, is green and environmentally friendly, and has good economic value and ecological value.

[0083] Example 4:

[0084] like Figure 7 - Figure 8 As shown, this embodiment proposes a saline-alkali land ditch ecological slope protection structure, including a ditch 2, which is excavated on the surface of the saline-alkali land 1. The ditch 2 has a slope, and a vegetation blanket c is laid on the slope. The vegetation blanket c is fixed using the slope protection fixing parts in Example 1, Example 2 or Example 3 to form a slope fixing system.

[0085] Regarding the vegetation blanket c in this embodiment, its structure is as follows:

[0086] like Figure 13 As shown, the vegetation blanket c includes a solid net c1, a seed layer c2, a fiber layer c3, a nutrient c4 and a bottom net c5, wherein the solid net c1 is located at the top of the vegetation blanket c, the seed layer c2 is arranged below the solid net c1, the fiber layer c3 is arranged below the seed layer c2, the nutrient c4 is arranged below the fiber layer c3, and the bottom net c5 is arranged below the nutrient c4; the bottom net c5 and the solid net c1 have high tensile strength and low elongation, and play a secondary protective role in soil and water conservation and environmental protection.

[0087] The solid net C1 and bottom net C5 are made of a composite of degradable imported modified polymer materials, which have strong impact and tensile resistance. Depending on the conditions of use, the degradation time can reach 1-5 years, playing an effective role in soil and water conservation and environmental protection.

[0088] The seed layer C2 utilizes highly salt-tolerant grass seeds, scientifically formulated and attached to specialized paper. The seed layer C2 contains two layers of nutrient paper, sandwiching grass seeds. The grass seed variety is selected based on field conditions. The fiber layer C3 is made from a variety of crop waste and plant fibers. During degradation, it continuously provides a variety of nutrients to the green plants, effectively regulating the natural temperature of the topsoil and retaining moisture. Nutrient layer C4 utilizes natural organic fertilizer.

[0089] This embodiment also proposes a method for constructing a saline-alkali land ditch ecological slope protection structure, based on the saline-alkali land ditch ecological slope protection structure, including the following steps:

[0090] S1: trimming the slope surface of the slope;

[0091] S2: laying the vegetation blanket c on the slope surface of the trench 2;

[0092] S3: fixing the vegetation blanket c;

[0093] S4: maintaining the vegetation blanket c: after the installation of the vegetation blanket c, water is sprayed for maintenance according to the growth requirement of the plants.

[0094] In this embodiment, the specific method for fixing the vegetation blanket c in S3 has two kinds, which are as follows:

[0095] If the slope fixing member used is the first fixing member a, refer to the attached Figure 7 - the attached Figure 8 , and the method is as follows:

[0096] S3-d1: insert the horizontal bamboo pole a2 into the through hole a12 of the vertical bamboo pole a1 to form a cross-shaped structure;

[0097] S3-d2: knock the vertical bamboo pole a1 with a hammer head, and the bottom of the vertical bamboo pole a1 pierces the vegetation blanket c and is inserted into the soil of the slope. Continue to hammer the vertical bamboo pole a1 until the horizontal bamboo pole a2 is pressed on the surface of the vegetation blanket c, and the fixing at this point is completed;

[0098] S3-d3: repeat the above process to complete the installation of multiple first fixing members a.

[0099] In the above method, refer to the attached Figure 9 - the attached Figure 10 , and the method for fixing the slope in S3 using the first fixing member a further includes:

[0100] S3-q5: install the intercepting bamboo pole a3 between two adjacent first fixing members a arranged transversely along the slope surface; during installation, first insert one end of the intercepting bamboo pole a3 into the horizontal bamboo pole a2 on one side, then slightly bend the intercepting bamboo pole a3 by using the elasticity of the intercepting bamboo pole a3 itself, and then smoothly insert the other end of the intercepting bamboo pole a3 into the corresponding horizontal bamboo pole a2 on the other side, to complete the insertion and fixing of the two ends of the intercepting bamboo pole a3 with the horizontal bamboo pole a2;

[0101] S3-q6: insert the fixing sign a4 into the insertion hole of the intercepting bamboo pole a3, and knock the fixing sign a4 until the bottom end of the fixing sign a4 is inserted into the soil of the slope, to complete the multi-point fixing of the intercepting bamboo pole a3;

[0102] S3-q7: repeat the above process to complete the installation of other intercepting bamboo poles a3, and the intercepting bamboo poles a3 divide the blanket surface of the vegetation blanket c into a plurality of small area units.

[0103] The principle of the arrangement is that the intercepting bamboo pole a3 is arranged between the first fixing member a, and the intercepting bamboo pole a3 can play two roles, one is that the intercepting bamboo pole a3 cooperates with the fixing stick a4 to increase the fixing area of the vegetation blanket c and increase the reinforcing force of the vegetation blanket c, and the other is that the intercepting bamboo pole a3 can divide the blanket surface of the vegetation blanket c into a plurality of small area units arranged horizontally, and the intercepting bamboo pole a3 can play a certain intercepting role, which can slow down the slope runoff when it rains heavily, and the layer-by-layer obstruction reduces the scouring force on the blanket surface, thereby protecting the blanket surface. In addition, the fixing stick a4 is made of a bamboo stick or a willow stick, and after the bamboo stick or the willow stick sprouts and roots, a "plant anchor rod" is formed, which increases the fixation to the soil and effectively prevents collapse.

[0104] If the slope protection fixing member is the second fixing member b, it has two different methods, as shown in Figure 11 Figure 12

[0105] ① The first kind:

[0106] S3-q1: Insert the barbed rod b3 into the first inclined hole b11 to complete the assembly of the barbed rod b3 and the hollow outer rod b1;

[0107] S3-q2: Hammer the hollow outer rod b1 with the barbed rod b3, so that the hollow outer rod b1 pierces the vegetation blanket c and is inserted into the soil of the slope, and continue to hammer until the barbed rod b3 also enters the soil of the slope;

[0108] S3-q3: Insert the inner rod b2 into the hollow outer rod b1, knock the inner rod b2 downward, the outer wall of the inner rod b2 will extrude the barbed rod b3, so that the barbed rod b3 slides along the first inclined hole b11 away from the center line of the hollow outer rod b1, the barbed rod b3 is inserted into the soil to form a barbed structure and improve the anchoring force;

[0109] S3-q4: Repeat the above process to complete the installation of a plurality of second fixing members b;

[0110] ② The second kind:

[0111] S3-t1: Insert the barbed rod b3 into the first inclined hole b11 to complete the assembly of the barbed rod b3 and the hollow outer rod b1;

[0112] S3-t2: Hammer the hollow outer rod b1 with the barbed rod b3, so that the hollow outer rod b1 pierces the vegetation blanket c and is inserted into the soil of the slope, and continue to hammer until the barbed rod b3 also enters the soil of the slope;

[0113] ​​S3-t3: the pressing rod b4 is inserted into the second inclined hole b12, and the hollow outer rod b1 is continuously hammered, so that the hollow outer rod b1 drives the pressing rod b4 to move downward until the bottom end of the pressing rod b4 presses and fixes the vegetation blanket c; finally, the inner rod b2 is inserted into the hollow outer rod b1, and the inner rod b2 is knocked downward, so that the outer wall of the inner rod b2 extrudes the barbed rod b3, the barbed rod b3 slides along the first inclined hole b11 to the direction away from the center line of the hollow outer rod b1, the barbed rod b3 is inserted into the soil to form a barbed structure, and the anchoring force is improved; the above process is repeated to complete the installation of multiple second fixing members b.

[0114] Through the above method, it can be seen that:

[0115] The salt and alkali land ditch ecological slope protection structure provided by the application adopts the form of the vegetation blanket c+the slope protection fixing member, the vegetation blanket c has grass seeds, the vegetation blanket c can construct a slope protection grass system after the grass seeds grow, the "plant anchor rod" formed by the slope protection fixing member is constructed, the ecological system of "grass-bamboo-willow" is constructed, a perfect multiple protection structure is formed, vegetation planting is realized, water and soil loss is effectively prevented, the salt and alkali ecological environment is improved, the formation of a micro ecological system is gradually promoted, and then a firm revetment slope protection structure is formed; meanwhile, the operation is simple, the construction is convenient, and the cost is low.

[0116] Although the specific embodiments of the application are described above with reference to the drawings, the description is not a limitation on the protection scope of the application, and various modifications or changes made by those skilled in the art on the basis of the technical solutions of the application without creative labor are still within the protection scope of the application.

Claims

1. A method for constructing a saline-alkali land ditch ecological slope protection structure, characterized in that: The saline-alkali land ditch ecological slope protection structure comprises a ditch (2), the ditch (2) having a side slope, a vegetation blanket (c) laid on the side slope, and the vegetation blanket (c) being fixed by a slope protection fixing member to form a slope fixing system; wherein: the slope protection fixing member adopts a second fixing member (b), the second fixing member (b) comprises a hollow outer rod (b1), the interior of the hollow outer rod (b1) is a hollow structure; at least one first oblique hole (b11) is formed on the circumference of the hollow outer rod (b1), and a barb rod (b3) used as a barb is inserted into the first oblique hole (b11). The barbed rod (b3) has a first bamboo joint (b31) for achieving blocking and limiting; one end of the barbed rod (b3) is inserted into the interior of the hollow outer rod (b1), and the other end is arranged outside the barbed rod (b3); both ends of the barbed rod (b3) are oblique, forming a first oblique end and a second oblique end respectively; it also includes an inner rod (b2), the bottom end of the inner rod (b2) is also oblique, and when the inner rod (b2) is inserted into the internal cavity of the hollow outer rod (b1), the barbed rod (b3) is squeezed by the inner rod (b2) and extends outward to form a barbed structure; At least one second oblique hole (b12) is formed on the circumference of the hollow outer rod (b1), and the second oblique hole (b12) is located above the first oblique hole (b11); a holding rod (b4) is inserted into the second oblique hole (b12) for holding and fixing the vegetation blanket (c); the holding rod (b4) has a second bamboo joint (b41) for blocking and limiting. The first inclined hole (b11) is oriented obliquely upward, and the second inclined hole (b12) is oriented obliquely downward, with the two inclined directions being opposite; the first bamboo node (b31) is arranged near the left end of the barbed rod (b3); and the second bamboo node (b41) is arranged near the right end of the holding rod (b4); The construction method includes the following steps: S1: Repair the slope surface; S2: Laying vegetation blanket (c) on the slope: Lay the vegetation blanket (c) naturally and smoothly on the slope of the ditch (2) in the saline-alkali land (1); S3: Fixing the vegetation blanket (c): Use slope protection fixings to fix the vegetation blanket (c); the specific method is as follows: The slope protection fixing member used is the second fixing member (b), which has two methods: ①The first type: S3-q1: inserting the barbed rod (b3) into the first oblique hole (b11) to complete the assembly of the barbed rod (b3) and the hollow outer rod (b1); S3-q2: Hammer the hollow outer rod (b1) with the barbed rod (b3) so that the hollow outer rod (b1) pierces the vegetation blanket (c) and penetrates into the soil of the slope, and continue hammering until the barbed rod (b3) also penetrates into the soil of the slope; S3-q3: Insert the inner rod (b2) into the hollow outer rod (b1), and knock the inner rod (b2) downward. The outer wall of the inner rod (b2) will squeeze the barbed rod (b3), causing the barbed rod (b3) to slide along the first inclined hole (b11) in a direction away from the center line of the hollow outer rod (b1). The barbed rod (b3) is inserted into the soil to form a barbed structure, thereby improving the anchoring force. S3-q4: Repeat the above process to complete the installation of multiple second fixing members (b); ②The second type: S3-t1: inserting the barbed rod (b3) into the first oblique hole (b11) to complete the assembly of the barbed rod (b3) and the hollow outer rod (b1); S3-t2: Hammering the hollow outer rod (b1) with the barbed rod (b3) so that the hollow outer rod (b1) pierces the vegetation blanket (c) and penetrates into the soil of the slope, and continuing hammering until the barbed rod (b3) also penetrates into the soil of the slope; S3-t3: Insert the holding rod (b4) into the second inclined hole (b12), and continue to hammer the hollow outer rod (b1) so that the hollow outer rod (b1) drives the holding rod (b4) to move downward until the bottom end of the holding rod (b4) presses and fixes the vegetation blanket (c); finally, insert the inner rod (b2) into the hollow outer rod (b1), and hammer the inner rod (b2) downward. The outer wall of the inner rod (b2) will squeeze the barbed rod (b3), causing the barbed rod (b3) to slide along the first inclined hole (b11) in a direction away from the center line of the hollow outer rod (b1). The barbed rod (b3) is inserted into the soil to form a barbed structure, thereby increasing the anchoring force; repeat the above process to complete the installation of multiple second fixing members (b); S4: Maintenance of vegetation blanket (c): After the vegetation blanket (c) is installed, water and maintain it according to the growth needs of the plants.

2. The method for constructing a saline-alkali land ditch ecological slope protection structure according to claim 1, characterized in that: The hollow outer rod (b1) is a bamboo rod; the inner rod (b2) is a willow rod.

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