CN112695774A

CN112695774A - Steep slope surface reinforcing and greening system and construction method thereof

Info

Publication number: CN112695774A
Application number: CN202011539492.3A
Authority: CN
Inventors: 方正; 孙智; 龙俊; 熊俊杰; 张梦君
Original assignee: Wuhan Garden Constructional Engineering Co
Current assignee: Wuhan Garden Constructional Engineering Co
Priority date: 2020-12-23
Filing date: 2020-12-23
Publication date: 2021-04-23

Abstract

The invention discloses a steep slope surface reinforcing and greening system and a construction method thereof, belonging to the technical field of steep slope greening. The steep slope surface reinforcing and greening system has the advantages of simple structure and simple and convenient construction method, can effectively improve the structural stability of the steep slope body, avoids the disintegration of the steep slope body and the loss of slope surface soil layers, provides guarantee for the design and implementation of the steep slope greening system, fully simplifies the maintenance process of slope surface green plants, reduces the maintenance cost of the slope greening system, saves the labor capacity, and has better application prospect and popularization value.

Description

Steep slope surface reinforcing and greening system and construction method thereof

Technical Field

The invention belongs to the technical field of abrupt slope greening, and particularly relates to an abrupt slope surface reinforcement greening system and a construction method thereof.

Background

China is wide in territory and numerous in mountainous regions, and various sloping fields exist; in addition, in the process of constructing basic engineering such as roads, railways and the like, a large amount of side slope structures can be excavated. In addition, in the process of designing and constructing certain parks, certain slopes can be reserved consciously according to the design requirements, and characteristic greening design is carried out on the slopes.

For the side slope with more vegetation coverage, the retaining capability of the water and soil on the slope surface can possibly meet the safety requirement of the side slope. However, for the slope with less coverage of vegetation and steep slope surface, the slope surface is easy to have water and soil loss, especially in the areas with rich rainfall, the water and soil on the slope surface are easy to be washed away under the perennial washing of rainwater, even major potential safety hazards such as collapse, landslide and debris flow are caused, and great loss is brought to the life and property safety of people.

Meanwhile, with the gradual advance of urban greening projects, more and more slope greening projects are designed and built. In the design and construction process of slope greening engineering, the reinforcement of a slope structure and the maintenance of slope vegetation are two problems which need to be considered in a key way, and particularly aim at a slope with a steep slope.

In the prior art, the slope structure is usually reinforced by using anchor rods, and although the slope structure can be reinforced to a certain extent by using the method, the slope landscape after the reinforcement system is arranged is usually poor, so that the attractiveness of the slope landscape is difficult to ensure. Meanwhile, in the prior art, daily maintenance for slope greening plants is usually performed by manually spraying water and fertilizer, so that the workload is high, and the slope body is usually maintained frequently due to the loss of slope soil caused by the spraying and flowing of water on the slope surface, so that the maintenance cost of the slope is increased.

Disclosure of Invention

Aiming at one or more of the defects or the improvement requirements in the prior art, the invention provides a steep slope surface reinforcement greening system and a construction method thereof, which can effectively realize reinforcement of the steep slope surface and self-maintenance of slope vegetation, ensure the stability of the setup of the steep slope greening system and reduce the process and labor cost of maintenance of the steep slope greening system.

In order to achieve the above object, in one aspect of the present invention, a steep slope surface reinforcement and greening system is provided, which includes reinforcement piles, a slope surface enclosure structure, a main conveying pipe and a secondary conveying pipe; wherein the content of the first and second substances,

the reinforcing piles are arranged at intervals, one end of each reinforcing pile extends into a slope soil layer, and the other end of each reinforcing pile is connected with the slope enclosure structure and forms a uniform stress structure with the slope enclosure structure;

the slope surface enclosing structure is in a grid shape, one side of the slope surface enclosing structure is respectively connected with the end part of each reinforcing pile, and the other side of the slope surface enclosing structure does not protrude out of the surface of a slope surface soil layer; the slope surface enclosure structure comprises a plurality of sequentially connected surrounding edges, and two ends of each surrounding edge are respectively connected with the end parts of two adjacent reinforcing piles; and is

Secondary conveying pipes are respectively arranged in the surrounding edges, and the secondary conveying pipes in the two mutually connected surrounding edges are respectively communicated, so that the secondary conveying pipes in the slope surface enclosing structure form a grid-shaped transfusion pipeline; correspondingly, at least one liquid supply channel communicated with the secondary conveying pipe is formed in at least one side of the surrounding edge and used for conveying liquid in the secondary conveying pipe to the slope soil layer;

the main conveying pipe is arranged on at least one side of the slope surface enclosure structure, at least one connecting hole penetrating the inside and the outside of the pipe is formed in the main conveying pipe, and the connecting hole is communicated with the secondary conveying pipe, so that water liquid required by slope vegetation can be conveyed to the secondary conveying pipe through the main conveying pipe.

As a further improvement of the invention, the liquid supply channel comprises a liquid supply through hole arranged on the secondary conveying pipe and a liquid supply gap arranged on the surrounding edge corresponding to the liquid supply through hole, and a water permeable block is arranged in the liquid supply gap.

As a further improvement of the invention, the water permeable block is a water permeable sponge.

As a further improvement of the invention, at least one liquid supply channel is respectively arranged on two sides of the surrounding edge, and the liquid supply channels on the two sides of the surrounding edge are arranged in a staggered manner.

As a further improvement of the invention, the included angle between the reinforcing pile and the vertical direction is smaller than the slope angle of the steep slope.

As a further improvement of the invention, the reinforcing piles deflect upwards by 3-15 degrees from the direction vertical to the slope surface.

As a further improvement of the invention, the water collecting device also comprises a water collecting ditch arranged at the slope toe of the steep slope;

the catch basin includes pebble layer, filter layer, porous disk and the bottom ditch that sets gradually from top to bottom in vertical for the water liquid that flows to the toe of a slope can pass through in proper order the pebble layer with the filter layer passes after filtering get into behind the porous disk in the bottom ditch.

In another aspect of the present invention, a construction method for a steep slope surface reinforcement and greening system is provided, which comprises the following steps:

s101: determining a region to be reinforced on the slope surface of the steep slope, and excavating a surface foundation pit with a certain depth in the region to be reinforced;

s102: sequentially arranging a plurality of reinforcing piles extending into a slope soil layer on the bottom surface of the surface foundation pit;

s103: binding reinforcing meshes between every two adjacent reinforcing columns, then respectively presetting secondary conveying pipes in the reinforcing meshes, and sequentially communicating the secondary conveying pipes to form a mesh pipeline structure;

s104: at least one liquid supply through hole is formed in the secondary conveying pipe between every two adjacent reinforcing piles, and a mould block is arranged corresponding to each liquid supply through hole respectively, so that one side of each mould block is used for closing the liquid supply through hole, and the other side of each mould block extends out of the edge of the reinforcing mesh;

s105: the reinforcing mesh is cast in place at the arrangement position, the reinforcing mesh and the secondary conveying pipe are cast into a whole to form a slope enclosure structure consisting of a plurality of sequentially connected surrounding edges, and the end part of each reinforcing pile is connected with the connection part of the corresponding two surrounding edges;

s106: after the slope enclosure structure is formed, the mould blocks on the surrounding edges are taken down, and the permeable blocks are embedded in the surrounding edge gaps after the mould blocks are taken down;

s107: arranging a main conveying pipe corresponding to the secondary conveying pipe, so that the main conveying pipe is connected with the secondary conveying pipe through a plurality of connectors;

s108: and covering soil in the surface foundation pit, and recovering the slope surface of the steep slope.

As a further improvement of the invention, the construction process of the toe catchment ditch is also included:

s109: firstly, forming a channel with a T-shaped cross section at a toe of a slope to form a bottom ditch and a limit platform above the bottom ditch; then, a porous disc and at least one filter layer are sequentially arranged above the limiting table, and the top surface of the topmost filter layer is enabled not to protrude out of the slope toe ground.

As a further improvement of the invention, a gravel layer and a pebble layer are sequentially arranged above the water permeable plate.

The above-described improved technical features may be combined with each other as long as they do not conflict with each other.

Generally, compared with the prior art, the technical scheme conceived by the invention has the following beneficial effects:

(1) according to the steep slope surface reinforcing and greening system, the steep slope reinforcing system consisting of the reinforcing piles and the slope surface enclosing structure is arranged, so that the reinforcement of a steep slope body can be effectively realized, the soil layer loss or disintegration of the slope body is avoided, and the stability of the steep slope greening system is ensured; meanwhile, by means of the arrangement of the self-maintenance pipeline network in the slope enclosing structure, moisture and fertilizer required by slope vegetation can flow into each secondary conveying pipe in the self-maintenance pipeline network through the main conveying pipe and permeate into a soil layer through the liquid supply channel on the secondary conveying pipe, so that automatic supply of moisture and nutrients is completed, the maintenance process of slope green planting is simplified, the erosion of a slope soil layer during sprinkling water on a steep slope surface layer is effectively avoided, the loss of the slope soil layer is further reduced, and the setting stability of a steep slope greening system is ensured;

(2) according to the steep slope surface reinforcing and greening system, the liquid supply channels on the two sides of the surrounding edge are alternately arranged, so that a weak stress area cannot be formed on the surrounding edge, the deformation or the fracture of the surrounding edge is avoided, and the stability of the arrangement of the surrounding edge is ensured; meanwhile, the water permeable block is arranged on the liquid supply channel, so that water liquid in the pipe can uniformly permeate into a soil layer, the soil layer is effectively prevented from being washed when the water liquid in the pipe flows out, soil in the soil layer can be prevented from entering the secondary conveying pipe, and the reliability of the arrangement of the conveying pipeline is ensured;

(3) according to the reinforcement greening system for the steep slope surface, the water collecting ditch consisting of the pebble layer, the filter layer, the water permeable plate and the bottom ditch is arranged at the slope toe, so that the stability of the water collecting ditch is ensured, and meanwhile, the multilayer filtration of water collected at the slope toe is effectively realized; the natural water collected in the bottom ditch can be effectively collected through the corresponding arrangement of the water collecting wells, so that convenience and guarantee are provided for the subsequent cyclic utilization of water resources, and the environmental protection of the steep slope greening system is improved;

(4) according to the steep slope surface reinforcing and greening system, the included angle between the axis of the reinforcing pile and the slope surface is preferably set, so that the force applied to the reinforcing pile after the slope surface enclosure structure is set can be well decomposed, the reinforcing pile is prevented from being subjected to component force which is pulled out of the slope surface, and the stability and reliability of the slope surface reinforcing and greening system are further ensured;

(5) the steep slope surface reinforcing and greening system has the advantages of simple structure and simple and convenient construction method, can effectively improve the structural stability of the steep slope body, avoids the disintegration of the steep slope body and the loss of slope surface soil layers, provides guarantee for the design and implementation of the steep slope greening system, fully simplifies the maintenance process of slope surface green plants, reduces the maintenance cost of the slope greening system, saves the labor capacity, and has better application prospect and popularization value.

Drawings

FIG. 1 is a vertical structural section view of a steep slope surface reinforcing and greening system in the embodiment of the invention;

FIG. 2 is a sectional view taken along the direction A-A of a steep slope surface reinforcement and greening system in an embodiment of the invention;

FIG. 3 is a partial sectional view of the steep slope surface reinforcing and greening system in the direction of A-A according to the embodiment of the invention;

FIG. 4 is a sectional view of a reinforcement and maintenance system of a reinforcement and greening system for a steep slope surface in another embodiment of the present invention;

FIG. 5 is a sectional view of a toe catchment ditch structure of a steep slope surface reinforcement and greening system in the embodiment of the invention;

in all the figures, the same reference numerals denote the same features, in particular:

1. reinforcing piles; 2. a main conveying pipe; 3. a slope surface enclosure structure; 4. a secondary delivery pipe; 5. a water collecting ditch; 6. a slope soil layer;

301. a first surrounding edge; 302. a second surrounding edge;

401. a first conduit; 402. a second conduit; 403. a liquid supply through hole; 404. a water permeable block;

501. a pebble layer; 502. a filter layer; 503. a water permeable plate; 504. a bottom ditch.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

Example (b):

referring to fig. 1-5, the steep slope surface reinforcement and greening system in the preferred embodiment of the invention comprises a reinforcement and maintenance system arranged on the slope surface and a water collecting ditch arranged at the slope toe. The soil layer of the steep slope is reinforced through a reinforcing and maintaining system, so that the water and soil loss of the slope and the disintegration of the slope structure are prevented; meanwhile, by utilizing the arrangement of the self-maintenance pipeline network in the reinforced maintenance system, the automatic water and nutrient supply of the slope vegetation can be realized, and the self-maintenance of the slope greening vegetation can be realized.

In particular, the reinforced maintenance system in the preferred embodiment comprises a plurality of reinforcing piles 1 and a slope envelope 3 provided at the end of each reinforcing pile 1. One end of the reinforcing pile 1 extends into a slope soil layer 6 from the slope surface, and the other end of the reinforcing pile is connected with the slope surface enclosing structure 3 to form an integral structure with unified stress.

In practice, the reinforcing pile 1 is preferably a cast-in-situ bored pile, and its axis is preferably perpendicular to the slope. However, considering that the slope surface enclosure structure 3 may slide on the slope surface due to its own weight after being installed, when actually installing the reinforcing piles 1, it is preferable to set the axial direction of the reinforcing piles 1 to be shifted upward by a certain angle from the vertical direction of the slope surface, that is, the included angle between the reinforcing piles 1 and the vertical direction is smaller than the slope angle of the steep slope. Preferably, the angle of upward deflection of the reinforcing pile 1 from the direction perpendicular to the slope surface is 3-15 degrees, and further preferably 5-10 degrees. Through the skew setting of above-mentioned reinforced pile 1, can effectively share the dead weight behind the domatic envelope 3 setting, ensure the stability of the whole atress of reinforced pile 1.

Further, as shown in fig. 1, the reinforcing piles 1 in the preferred embodiment are preferably arranged in parallel, and the end portions of the reinforcing piles 1 and the slope envelope 3 arranged at the end portions of the reinforcing piles 1 do not protrude out of the surface of the slope soil layer 6, that is, after the reinforcing and maintaining system is formed, the whole reinforcing and maintaining system is buried under the surface of the slope soil layer 6, so that the design and implementation of the steep slope greening engineering are guaranteed, and the attractiveness of the steep slope greening system is guaranteed. Meanwhile, a plurality of reinforcing piles 1 are arranged in an array on the slope surface, as shown in fig. 2 and 4.

More specifically, the reinforcing pile 1 in the preferred embodiment is a cast-in-situ bored pile, which is formed by drilling a hole on the slope, arranging a reinforcing mesh in the hole, and pouring cement concrete; after the cast-in-place pile is solidified and formed, the slope enclosing structure 3 is arranged at the end part of the cast-in-place pile, so that the cast-in-place pile and each cast-in-place pile form an integral stressed structure. Meanwhile, the depth of the reinforced pile 1 extending into the slope soil layer 6 in the preferred embodiment is preferably 2-8 m, and during actual setting, the setting length of the cast-in-situ bored pile can be preferably selected according to the gradient of the steep slope and the height of the steep slope. In addition, after the slope surface enclosure 3 in the preferred embodiment is completely set, the plane on which the slope surface enclosure 3 is located is preferably parallel to the surface of the steep slope and is preferably 5-15 cm below the surface, for example, in a preferred embodiment, the surface of the slope surface enclosure 3 is 10cm below the surface of the steep slope, that is, after the reinforcement and maintenance system is completely set, 10cm of soil is covered on the surface of the slope surface enclosure 3, and the original appearance of the steep slope surface is recovered.

Further, the slope enclosure 3 in the preferred embodiment is formed into a grid form, as shown in fig. 2, each grid node corresponds to one reinforcing pile 1, and the slope enclosure 3 may be regarded as formed by sequentially connecting a plurality of surrounding edges, i.e., a first surrounding edge 301 and a second surrounding edge 302. In the net form shown in fig. 2, the first surrounding edge 301 is arranged perpendicular to the second surrounding edge 302, and the net structure is formed to include a plurality of square cells. In yet another embodiment as shown in fig. 4, the angle between adjacent peripheral edges is not 90 °, such as 60 ° as shown in the figure, so that a plurality of triangular cells are formed in the mesh structure. By the arrangement of the net-like form shown in fig. 4, when the reinforcing piles 1 receive the force downward along the slope, the force is decomposed into two component forces with an angle of 60 degrees and is transmitted to the two reinforcing piles 1 below, so that the stress stability of the whole net-like structure is higher. Of course, the slope envelope 3 may be in any other form than the above two net forms, which may be implemented by changing the arrangement of the reinforcing piles 1 on the slope.

Meanwhile, the slope enclosure 3 in the preferred embodiment is provided with a self-maintenance pipeline network to supply water and fertilizer for the vegetation planted in each unit space of the net-shaped structure. During actual setting, the self-maintenance pipeline network is spliced and preset in the bound steel bar mesh structure before cast-in-place forming of the surrounding edge structure, and then the self-maintenance pipeline network and the steel bar mesh structure are poured into a whole. Specifically, for the mesh form as shown in fig. 2, the self-maintenance pipeline network is preferably formed by sequentially splicing a plurality of vertically arranged first pipelines 401 and a plurality of horizontally arranged second pipelines 402 to form a mesh-shaped secondary conveying pipe 4 as shown in fig. 2, so that two sections of the first pipelines 401 and two sections of the second pipelines 402 correspond to each mesh unit.

Furthermore, each surrounding edge is respectively provided with a liquid supply channel for supplying liquid in the pipe to the slope soil layer. In the preferred embodiment, the liquid supply passage includes a liquid supply through hole 403 formed in the pipe, a liquid supply notch formed around the alignment position of the liquid supply through hole 403, and a water permeable block 404 disposed in the notch. In a preferred embodiment, the water permeable block 404 is a water permeable sponge embedded on the peripheral wall surface of the surrounding edge, and is used for uniformly permeating liquid in the pipe into the soil layer, preventing the liquid in the pipe from rushing into the soil layer through the liquid supply through hole 403, and ensuring that the soil layer at the position corresponding to the liquid supply through hole 403 cannot be rushed away and further cannot flow back into the pipeline. Further preferably, the liquid supply through holes 403 on the same surrounding edge are arranged in a staggered manner on two sides of the surrounding edge, so as to avoid the occurrence of weak stress areas of the surrounding edge; meanwhile, the liquid supply through holes 403 on the side where the two opposite surrounding edges are aligned with each other are arranged in a staggered manner, so as to ensure the uniformity of liquid supply of the soil layer at each position in the grid unit, as shown in the form of opening the liquid supply through holes 403 on the two first surrounding edges 301 or the two second surrounding edges 302 in fig. 3.

As shown in fig. 1 and 2, the secondary duct 4 in the slope enclosure 3 is also provided with a main duct 2 in the preferred embodiment, which is preferably arranged at the top of a steep slope and is preferably arranged horizontally. Meanwhile, in order to ensure stability and beauty after installation, the main conveying pipe 2 is preferably buried in the slope soil layer 6. Secondly, a plurality of connecting holes are arranged on the main conveying pipe 2 at intervals, and the connecting holes are respectively communicated with the secondary conveying pipe 4 through connecting heads. In a preferred embodiment, each connection hole is connected to the top of the slope enclosure 3 at the junction of a first conduit 401 and a second conduit 402, as shown in fig. 2 and 4. It is further preferable that the connection head and the corresponding secondary delivery pipe 4 are not connected in a coaxial manner, so that the liquid entering the secondary delivery pipe 4 is flushed at a certain inclination angle, and thus the liquid can be flushed in both the first pipeline 401 and the second pipeline 402, thereby ensuring the uniformity of liquid delivery. Of course, even if the first pipes 401 are filled first and the second pipes 402 are filled again, the normal operation of the secondary pipe 4 is not affected. In addition, obviously, the main conveying pipe 2 in the preferred embodiment may also be disposed at one side or the bottom of the slope enclosure 3 according to actual setting requirements, and one or more main conveying pipes 2 may be disposed, which may all be preferably disposed according to actual requirements.

Through the corresponding setting of 3 outside main conveyer pipes 2 of inferior conveyer pipe 4 and domatic envelope of slope envelope 3 in domatic envelope for the liquid manure supply of vegetation can be accomplished through the mode of hiding the infiltration on domatic soil layer 6, avoids domatic top soil to lose because of the soil erosion that the surface layer watering leads to, realizes the automatic maintenance of abrupt slope greening system, promotes domatic greening system's aesthetic property, reduces the cost of domatic vegetation maintenance.

When actual setting, can set up the water supply pipe to main conveyer pipe 2 to can dissolve the required fertilizer nutrient of vegetation in the aquatic of water supply pipe, and in corresponding soil layer is carried to main conveyer pipe 2 and inferior conveyer pipe 4 via. Preferably, a water collecting ditch 5 is arranged at the slope toe of the steep slope, and a water collecting well is arranged corresponding to the water collecting ditch 5, so that one end of the water supply pipeline, which is far away from the main conveying pipe 2, is connected into the water collecting well; correspondingly, be provided with booster pump and solenoid valve on water supply pipe for the moisture of collecting in the sump pit can be by the pump to the main conveyer pipe 2 in, carry secondary conveyer pipe 4 by it again in, and can keep opening or closing of solenoid valve as required, moreover, according to the speed demand that domatic soil layer supplied water, can utilize the booster pump to change the pressure of water liquid in the secondary conveyer pipe, thereby when accomplishing water resource cycle uses, change the water supply efficiency in the domatic soil layer.

Further, the water collecting trench 5 in the preferred embodiment is preferably disposed at the toe of a steep slope, and preferably includes a pebble layer 501, a filter layer 502, a permeable plate 503 and a bottom trench 504 which are sequentially disposed from top to bottom in the vertical direction, as shown in fig. 5. The pebble bed 501 is formed by stacking pebbles with a certain thickness, gaps among the pebbles form a channel for water filtration, and the top surface of the pebble bed is preferably flush with the ground. A filter layer 502 is disposed at the bottom of the pebble bed 501 for secondary filtering of the collected water coarsely filtered by the pebble bed 501, and in a preferred embodiment, the filter layer 502 may be a crushed stone layer or other porous materials. Correspondingly, a water permeable plate 503 is disposed below the filtering layer 502 for supporting the pebble layer 501 and the filtering layer 502, which is preferably formed by sequentially laying precast concrete slabs having a certain thickness along the extending direction of the water collecting trench 5, and the water permeable plate 503 is preferably provided with a plurality of through holes penetrating through both end surfaces for passing filtered water. Finally, a bottom ditch 504 is arranged at the bottom of the water permeable plate 503, and the bottom ditch 504 extends to the water collecting well from the steep slope toe; preferably, the elevation of the bottom surface of the trench 504 decreases from the side facing away from the sump to the side facing toward the sump, thereby ensuring that the collected water in the trench can flow rapidly into the sump.

For the steep slope surface reinforcing and greening system in the preferred embodiment, the construction method preferably comprises the following steps:

s101: determining the range of a region to be reinforced of the slope surface, and excavating a certain depth on the surface of a slope surface soil layer of the region to be reinforced to form a surface foundation pit with a certain depth; the depth of the surface foundation pit is preferably 0.3 m-1.5 m.

S102: determining the arrangement position of a reinforcing pile 1 on the bottom surface of the surface foundation pit, sequentially drilling and pouring the reinforcing piles 1 at the determined positions, and preferably enabling the end part of each reinforcing pile 1 to slightly extend out of the bottom surface of the surface foundation pit so as to facilitate the arrangement of a subsequent slope enclosure structure 3; meanwhile, the end part of each reinforcing pile 1 is preferably provided with embedded steel bars protruding out of the end face of the pile body, so that the subsequent slope surface enclosure structure 3 is conveniently bound with the steel bar mesh.

S103: binding a reinforcing mesh at the end part of the formed reinforcing pile 1 to form a pouring frame of the slope enclosure structure 3; meanwhile, the secondary conveying pipes 4 which are connected in sequence are preset in the pouring frame according to the trend of each surrounding edge respectively, liquid supply through holes 403 are correspondingly formed in one side or two sides of each secondary conveying pipe 4, a cambered surface mold block is arranged on one side of each liquid supply through hole 403 and used for blocking the liquid supply through holes 403 when the surrounding edges are poured, a gap for accommodating a water permeable block 404 is formed in each surrounding edge, namely one side of each mold block is closed and abutted to the liquid supply through holes 403, and the other side of each mold block extends out of the edge of the steel bar net. In a preferred embodiment, the cambered surface mold block is a foam block which can be pulled out of the surrounding edge after the surrounding edge is poured and formed, so that communication between the liquid supply through hole 403 and the outside and arrangement of the water permeable block 404 are guaranteed. After the secondary conveying pipe 4 is laid and the cambered surface die blocks are arranged at the liquid supply through holes 403, the slope enclosure structure 3 is poured to form a grid shape and form the slope enclosure structure 3 with the reinforced piles 1 to form a unified stress structure.

S104: the main conveying pipe 2 is arranged corresponding to the slope surface enclosing structure 3, and the main conveying pipe 2 is connected with the secondary conveying pipe 4 in the slope surface enclosing structure 3 through a plurality of connectors to form a pipeline passage for supplying water and fertilizer.

S105: backfilling soil on the surface of the formed reinforcing and maintaining system, and recovering the slope surface of the steep slope; when backfilling and earthing are carried out, the soil obtained in the excavation in the step S101 can be adopted, and at the moment, the surface of the slope enclosure structure 3 is lower than the slope by 5-30 cm.

S106: and a water collecting ditch 5 is correspondingly arranged at the slope toe of the steep slope. Firstly, excavating a channel with a certain depth at the position of a toe, wherein the vertical section of the channel is of a T-shaped structure, namely a bottom channel 504 is formed, and a limit platform is formed above the bottom channel 504; then, a porous plate 503 is sequentially arranged on the limit table along the extending direction of the bottom ditch 504, and a filter layer 502 with a certain thickness is arranged on the top of the porous plate 503; finally, a pebble layer 501 which does not protrude above the ground (usually slightly below the ground) is laid above the filter layer 502, thereby completing the arrangement of the water collection ditch 5;

s107: and planting corresponding vegetation on the reinforced slope surface to complete the setting of a slope greening system.

The steep slope surface reinforcing and greening system has the advantages of simple structure, simple and convenient arrangement, high stability of the set slope body, effective prevention of loss and disintegration of the slope body soil layer and guarantee of the reliability and safety of the slope surface greening system; meanwhile, through the corresponding arrangement of the water and fertilizer supply pipeline system in the system, water and fertilizer supply of the slope greening system can be carried out in a pipeline permeation mode, so that the uniformity of water and fertilizer supply can be ensured, water liquid scouring of a surface soil layer in the maintenance process can be avoided, the water and soil retention capacity of the slope soil layer is further improved, the maintenance process of the greening system is simplified, and the maintenance cost is reduced; in addition, through the corresponding setting of slope foot catch basin, can collect the water that the slope flows down fast to accomplish the multiple-layer filtering of water, provide the guarantee for the cyclic utilization of follow-up water, promoted the feature of environmental protection that abrupt slope greening system set up, have better application prospect and spreading value.

It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A steep slope surface reinforcing and greening system is characterized by comprising reinforcing piles, a slope surface enclosing structure, a main conveying pipe and a secondary conveying pipe; wherein the content of the first and second substances,

2. The steep slope surface reinforcing and greening system as claimed in claim 1, wherein the liquid supply channel comprises a liquid supply through hole formed in the secondary conveying pipe and a liquid supply gap formed in the surrounding edge corresponding to the liquid supply through hole, and a water permeable block is arranged in the liquid supply gap.

3. The steep slope reinforcement greening system of claim 2, wherein the water permeable block is a water permeable sponge.

4. The steep slope surface reinforcing and greening system as claimed in any one of claims 1 to 3, wherein at least one liquid supply channel is respectively formed on both sides of the surrounding edge, and the liquid supply channels on both sides of the surrounding edge are arranged in a staggered manner.

5. The steep slope surface reinforcing and greening system as claimed in any one of claims 1 to 3, wherein the included angle of the reinforcing piles with the vertical direction is smaller than the slope angle of the steep slope.

6. The steep slope surface reinforced greening system of claim 5, wherein the reinforcing piles are deflected upwards by 3 ° to 15 ° from a direction perpendicular to the slope surface.

7. The steep slope surface reinforced greening system as claimed in claim 1, further comprising a water collecting ditch arranged at the slope foot of the steep slope;

8. A construction method of a steep slope surface reinforcement greening system is characterized by comprising the following steps:

9. The construction method of the steep slope surface reinforcement and greening system as claimed in claim 8, further comprising the construction process of a toe catchment ditch:

10. The construction method of the steep slope surface reinforcement and greening system as claimed in claim 9, wherein a gravel layer and a pebble layer are sequentially arranged above the water permeable plate.