Automatic watering control device

Abstract

The present invention discloses an automatic irrigation control device, comprising a water control chamber located below a water storage chamber, wherein a water control tank is arranged in the water control chamber; a water pipe is arranged in the water storage chamber, and the lower end of the water pipe sealably passes downward out of the water storage chamber and extends to the top of the water control tank opening; the device is characterized in that the water pipe is a hose and its length exceeds the height of the inner cavity of the water storage chamber, a flow control float floating on the water surface is connected to the upper end of the water pipe, a limited flow hole is horizontally penetrated on the part of the flow control float immersed under the water surface, an air vent is vertically penetrated on the flow control float, and the air vent and the limited flow hole are cross-connected; the lower end of the air vent and the upper end of the water pipe are sealed and connected. The present invention can realize mechanical automatic water supply and irrigation of the irrigation network in a timely and quantitative manner. The irrigation control process reduces the dependence of the irrigation control process on electricity.

Description

[0001] This application is a divisional application of the patent "A rock slope ecological restoration system" with application number 2020109014005 and application date 2020-08-31. Technical Field

[0002] The invention relates to the technical field of ecological restoration and greening, and in particular to an automatic irrigation control device of a rock slope ecological restoration system. Background Art

[0003] Due to the mining of mineral resources and road construction in arid and semi-arid areas, the topography and ecological environment of a large number of closed mines and along roads have been severely damaged, and many steep and high rock slopes have appeared. Usually, these high and steep rock slopes are not covered with vegetation soil, have a small rain-receiving area, and have poor water retention. In addition, there is little rainfall in arid areas and unstable rock masses on the slopes, making it extremely difficult to restore vegetation on the slopes. And it is easy to cause geological disasters such as collapse and rockfall because the ecology cannot be restored, which seriously affects the ecological environment. Therefore, it is urgent to carry out vegetation restoration on artificial high and steep rock slopes in closed mines and along roads in arid areas.

[0004] At present, vegetation restoration is mainly carried out on low (gentle) rock slopes in humid and semi-humid areas by stacking vegetation bags on the slopes and three-dimensional net spraying vegetation soil (commonly used vegetation concrete). However, the vegetation restoration technology for high and steep rock slopes in arid areas is still immature. The two conventional restoration technologies for vegetation restoration on high and steep rock slopes in arid areas will have the following problems: (1) Construction difficulties and high costs. The three-dimensional net spraying technology has a large workload and is dangerous for anchoring operations on high and steep rock slopes, and the construction cost is high; stacking vegetation bags on high and steep rock slopes with unstable rock bodies is highly dangerous, labor-intensive, and has a large thickness of vegetation bags and high costs. (2) Applicability is limited by complex terrain environments. Three-dimensional net spraying technology: the transportation of spraying equipment is restricted by terrain and roads, and it is difficult to obtain water for spraying in some areas; the stacking height of vegetation bags on steep rock slopes is limited, and the vegetation soil on steep rock slopes is prone to collapse or shallow landslides along the slopes and other geological disasters. (3) There is no support for rock blocks on steep rock slopes. (4) It cannot collect and store rainwater and automatically control the amount of irrigation water. The single vegetation soil layer has poor water retention, and thus cannot provide long-term sufficient water for vegetation on steep rock slopes in arid areas. Vegetation restoration takes a long time and has poor results, and the cost of later cultivation is very high.

[0005] CN201910384331.2 once disclosed a method for repairing hard slope greening, including slope cleaning, setting anchor rods, laying galvanized wire mesh, improving red sandstone into planting soil, laying geomembrane, sowing, establishing an automatic irrigation system and operating and maintaining it, adding modifiers to the red sandstone soil layers with different sandstone contents for improvement, and using an automatic control system to install nozzles on the pre-buried sprinkler system, and watering the planted plants through the nozzles. The sprinkler system can be automatically controlled according to the temperature and humidity. The invention discloses the use of anchor rods for anchoring and the use of rainwater collection for sprinkler irrigation. However, the following defects still exist: 1. Simple anchoring cannot provide a support effect of sufficient strength, and deeper anchoring has defects such as difficulty in operation, high risk of anchoring, and reduced slope stability. 2 At the same time, rainwater is directly collected for sprinkler irrigation. It is easy for dirt to be mixed in the rainwater and cause pipe blockage. The electric control equipment for sprinkler irrigation in the field is restricted by power supply conditions and is prone to failure. 3 The water holding capacity of the vegetation structure is limited, and it needs to rely on more frequent sprinkler irrigation, which is costly and not conducive to long-term maintenance.

[0006] Therefore, how to propose a technology suitable for ecological restoration of high and steep rock slopes in arid areas, improve the support and fixation effect of rock blocks on high and steep rock slopes; be able to better collect rainwater for regular irrigation, reduce the dependence of irrigation control on electrical equipment, improve greening effects and ecological restoration effects, and improve construction safety and economy, has become a key issue that needs to be urgently solved in the research of vegetation restoration technology on high and steep rock slopes in arid areas. Summary of the invention

[0007] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is: how to provide a rock slope ecological restoration system that can better collect rainwater for regular irrigation, reduce the dependence of irrigation control on electrical equipment, improve the ecological restoration effect of slope greening, and improve construction safety and economy, so that it is particularly suitable for vegetation restoration of high and steep rock slopes in arid areas, wherein high and steep rock slopes refer to rock slopes with a height of more than 20 meters and a slope range of 50-90 degrees. The present invention also provides an automatic irrigation control device that can conveniently realize timed and quantitative water supply.

[0008] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A rock slope ecological restoration system includes a rainwater collection and storage unit arranged at the top of the slope, a vegetation substrate laid and fixed on the slope, an anchoring system for fixing the vegetation substrate and an irrigation pipe network buried in the vegetation substrate, and the water inlet end of the irrigation pipe network is connected to the rainwater collection and storage unit; it is characterized in that the rainwater collection and storage unit includes a water collection trough arranged at the top of the slope and adjacent to the slope, a filtering structure is arranged in the water collection trough, a water storage chamber is arranged at the edge of the water collection trough and the water in the water collection trough can be immersed in the water storage chamber, and the water storage chamber is connected to the water inlet end of the irrigation pipe network.

[0010] In this way, when it rains, the surface runoff from the mountain above the slope can be collected in the rainwater collection and storage unit, filtered by the filtering structure, and then immersed in the water storage chamber, where clean rainwater can be collected as a water source for irrigation. This makes full use of rainwater resources, and the particles and mud and sand impurities in the rainwater are removed after filtering, which can better avoid the blockage of the irrigation pipe network and extend the service life of the irrigation system.

[0011] As an optimization, the water collection trough is set at the lowest point of the mountain above the slope.

[0012] In this way, it is more convenient for rainwater from the mountain above the slope to gather and flow into the ditch, thereby improving the effect of rainwater collection and utilization.

[0013] As an optimization, the bottom of the sump is tilted so that the water storage chamber is connected to the lowest point of the bottom of the sump.

[0014] In this way, the rainwater collected in the sump can be more easily infiltrated into the water storage chamber more smoothly.

[0015] Furthermore, the bottom of the water collecting tank is in the shape of a triangle with a middle portion protruding upward and two sides inclined downward. There are two water storage chambers which are respectively connected and arranged on both sides of the water collecting tank.

[0016] In this way, a water source is set on each side of the irrigation pipe network, which makes it easier for the irrigation pipe network to drain water to various parts of the slope more evenly and stably, avoiding the phenomenon of unilateral concentration.

[0017] Furthermore, the filtering structure comprises a pebble layer, a gravel layer, a coarse sand layer, a medium sand layer and a fine sand layer which are laid sequentially from top to bottom, and the particle size of the materials in each layer decreases sequentially from top to bottom.

[0018] In this way, the use of 5 layers of sand and gravel with different particle sizes can better improve the layer-by-layer filtration effect of each layer of filter material in the water collection tank, and better collect clean water resources. At the same time, this structure can also effectively reduce the capillary effect in the water collection tank, prevent the collected water from evaporating again, and better retain water.

[0019] Furthermore, the bottom surface of the water collection tank is obtained by pouring concrete to form a water-dividing concrete layer.

[0020] This makes it easier to obtain the desired inclination of the bottom surface of the trough during construction, and can also better ensure the anti-seepage effect of the bottom surface of the trough.

[0021] A better option is to have a slope of about 3% on both sides of the bottom of the sump, which can better guide rainwater to flow into the water storage chambers on both sides.

[0022] Furthermore, the water storage chamber is an integrally cast reinforced concrete chamber.

[0023] In this way, it can be ensured that it has good anti-seepage ability.

[0024] Furthermore, permeable bricks are arranged between the water storage chamber and the fine sand layer at the bottom of the water collection tank.

[0025] This can better ensure that the sediment in the rainwater is filtered out before entering the water storage chamber, preventing the sediment from entering the water storage chamber, ensuring the smoothness and stability of the irrigation pipe network, and extending the service life of the system.

[0026] Furthermore, a removable concrete cover plate is provided on the top of the water storage chamber.

[0027] In this way, the water storage chamber is in a closed state as a whole, which can prevent mud and sand from penetrating from the top of the water storage chamber, and the cover can also be opened to facilitate the later maintenance of the water storage chamber.

[0028] Furthermore, a stainless steel ventilation pipe is arranged on the concrete cover plate, the lower end of the ventilation pipe is exposed on the lower surface of the concrete cover plate, and the upper end of the ventilation pipe is higher than the ground and is bent downward.

[0029] In this way, the water storage chamber can be connected to the atmosphere, so that the water stored in the water storage chamber can be more smoothly controlled to flow into the irrigation pipe network as a water source to achieve irrigation. And the vent pipe mouth is downward to prevent the ground soil and rocks from falling into the water storage chamber. When implemented, the upper end of the vent pipe mouth is preferably 50 cm above the ground to prevent mud from splashing into the mouth when it rains.

[0030] As an optimization, it also includes an automatic irrigation control device arranged between the water storage chamber and the irrigation pipe network, and the automatic irrigation control device is used to control the water storage chamber to supply water to the irrigation pipe network at a timely and quantitative manner.

[0031] In this way, the water supply of the processing network can be controlled at a fixed time and quantity, ensuring the irrigation effect at a fixed time and quantity.

[0032] Furthermore, the automatic irrigation control device includes a water control chamber located below the water storage chamber, the water control chamber is provided with a vertically arranged water control tank bracket, the upper end of the water control tank bracket is hingedly provided with a water control tank, the specific gravity of the bottom of the water control tank is greater than that of the rest of the parts and the hinge point is located at the middle and rear position, so that when the water control tank is empty, the center of gravity is located behind the hinge point and after the water is filled to a certain proportion, the center of gravity can move forward (forward toward the outlet end of the water control tank) beyond the hinge point position, when the water control tank is empty, the box mouth is upward and arranged opposite to the water outlet of the water storage chamber, and when the box mouth of the water control tank is tilted downward, the box mouth is opposite to the main stream pipe inlet of the irrigation network.

[0033] In this way, a reversible water control tank is set in the water control room. The center of gravity of the water control tank is located so that the box mouth faces upward when the water control tank is empty. The water stored in the upper water storage chamber is injected into the water control tank through the water outlet. After the water injection exceeds a certain proportion, the box mouth of the water control tank tilts downward and pours the water into the main stream pipe inlet of the irrigation network. In this way, a purely mechanical structure is used to achieve quantitative control of rainwater entering the irrigation network each time. There is no need to use electric control valves, which avoids the restriction of electricity consumption, has better reliability and stability, and a longer service life.

[0034] Furthermore, the plane where the water control tank opening is located is inclined, and when the tank is empty, the plane where the tank opening is located faces upward.

[0035] In this way, the water in the water storage tank can flow into the water control tank better when the tank is empty, and the water can be poured out into the main stream pipe inlet of the irrigation pipe network better when the water control tank is dumped.

[0036] Furthermore, the water control box includes an external adjustment frame and a box body installed in the adjustment frame. The adjustment frame is generally groove-shaped and is hinged to the upper end of the water control tank bracket. Adjustment fixing screws are horizontally penetrated on both sides of the adjustment frame. The adjustment fixing bolts are rotatably screwed on the adjustment frame and the inner ends abut against the box body to fix the box body. A counterweight block is inserted at the bottom of the groove of the adjustment frame.

[0037] In this way, the amount of water in the water control tank when it is tilted can be flexibly adjusted by changing the upper and lower positions of the box body in the adjustment frame and increasing or decreasing the counterweight blocks, so that the amount of water poured into the irrigation network each time can be adjusted to better match the size of the slope area.

[0038] Furthermore, a water pipe is arranged in the water storage chamber, and the lower end of the water pipe passes downward through the water storage chamber in a sealed manner and extends to above the opening of the water control tank.

[0039] In this way, the rainwater in the water storage chamber can be better and more accurately introduced into the water control tank by relying on the water pipe.

[0040] Furthermore, the water pipe is a hose and its length exceeds the height of the inner cavity of the water storage chamber. The upper end of the water pipe is connected to a flow control float floating on the water surface. A limiting flow hole is horizontally penetrated on the part of the flow control float immersed under the water surface. The flow control float is also vertically penetrated with an air vent, and the air vent and the flow limiting hole are cross-connected; the lower end of the air hole and the upper end of the water pipe are sealed and connected.

[0041] In this way, the water in the water storage chamber can be drained into the water pipe through the flow limiting hole and flow out to the water control tank. The flow limiting hole can be set small enough to extend the time required for the water in the water control tank to be dumped once. The setting of the flow control float can ensure that no matter how much water is left in the water storage chamber, the flow limiting hole is always at a fixed height from the water surface, ensuring that the water flow entering the water pipe through the flow limiting hole is constant. In addition, it is ensured that the time required for the water in the water control tank to be dumped once is fixed. Therefore, relying on a purely mechanical structure, the timed and quantitative automatic water supply to the irrigation network is guaranteed. At the same time, the setting of the vent hole can achieve exhaust, so that even if the flow limiting hole is small enough, water can be stably supplied downward.

[0042] Furthermore, the diameter of the vent hole is more than 4 times the diameter of the flow limiting hole, so that the diameter of the vent hole is large enough to avoid mutual obstruction between the exhaust gas and the water flow, thereby affecting the amount of water flowing in through the flow limiting hole.

[0043] Furthermore, the lower part of the flow control float is a solid float entity, the upper part is a hollow float cavity, the limit hole is located on the float entity, and the vent hole and the float cavity are isolated and sealed from each other.

[0044] Furthermore, a counterweight material inlet communicating with the float cavity is provided at the upper end of the flow control float.

[0045] In this way, the weight material can be added into the floating ball cavity through the weight material inlet, thereby adjusting the draft of the floating ball, and then adjusting the flow rate of the water flowing into the water pipe through the flow restriction hole. Then, the interval time of each water supply can be adjusted as needed to better adapt it to the area size of the slope.

[0046] In this way, the working principle of the automatic irrigation control device is as follows: since the float will rise and fall with the rise and fall of the water level in the water storage chamber, the depth of immersion in the water is kept unchanged, so that the water pressure of the flow limiting hole at 1 / 4 of the bottom surface of the water control float remains unchanged, and stable control of the amount of water entering the vent through the flow limiting hole is achieved; since the vent and the float cavity are mutually sealed and isolated, the water entering the vent will not enter the float cavity, ensuring that the vent exhausts upward without affecting the buoyancy and immersion depth of the float; the water entering the vent flows into the water control tank through the water pipe at the lower end of the float When in use, the center of gravity of the water control tank in the waterless state deviates from the water control tank bracket and deviates to one side of the bottom of the water control tank, so that when the water control tank has not reached the designed water volume, the box mouth is upward to receive the water flowing from the water pipe. As the water in the water control tank increases, the center of gravity of the water control tank gradually moves toward the box mouth. When the water volume reaches the designed water volume, the center of gravity of the water control tank passes the position of the water control tank bracket and moves to one side of the box mouth, causing the water control tank to tip over. After tipping over, the water control tank returns to the state of the box mouth facing upward. This cycle is repeated to achieve periodic, timed and quantitative automatic irrigation.

[0047] As an optimization, the irrigation pipe network includes a main stream pipe arranged downward along the slope surface, the water inlet at the upper end of the main stream pipe is connected to the automatic irrigation device (specifically connected to the bottom of the water control chamber), and branch pipes are arranged at intervals on the main stream pipe. The branch pipes are arranged horizontally along the slope and buried in the vegetation substrate, and seepage holes are arranged at intervals on the branch pipes.

[0048] In this way, during watering, the automatic watering device supplies water to the main pipe at a regular time and in a fixed quantity, and the water directly seeps into the vegetation substrate through the branch pipes and the seepage holes thereon, which can better avoid water evaporation and improve the utilization effect of water resources.

[0049] Furthermore, in the main stream pipe, a plurality of intercepting water outlets are arranged at intervals from top to bottom; the intercepting water outlet includes a water outlet joint connected to the main stream pipe, and the lower edge of the junction between the water outlet joint and the main stream pipe extends obliquely upward to form a sheet-like water receiving protrusion in the inner cavity of the main stream pipe, and the edge of the water receiving protrusion and the inner cavity of the main stream pipe are surrounded by an intercepting groove; the outer end of the water outlet joint is fixedly connected to the branch pipe.

[0050] In this way, each irrigation in the present application is a timed and quantitative irrigation, which solves the problem of sufficient irrigation near the water source and insufficient irrigation at the end of the pipe network due to long-term small-flow irrigation. Timed and quantitative irrigation has the characteristics of large water and short time. If the conventional irrigation pipe network is arranged, it is impossible to achieve equal irrigation of branch pipes at different heights on the same main pipe. Therefore, the above-mentioned interception-type water outlet structure is set in the present application. In this way, when the main pipe is quantitatively supplied with water each time, the quantitatively supplied water flows downward from the main pipe, and each branch pipe relies on the interception groove to actively intercept and introduce water into each branch pipe smoothly and quickly, ensuring the water supply effect for each branch pipe. At the same time, the structure can ensure that the amount of water connected to each branch pipe at different heights is balanced by adjusting the size of the interception groove, thereby providing a balanced irrigation effect.

[0051] As an optimization, the water collecting protrusion is inclined upward at an angle of about 45 degrees.

[0052] In this way, a better water retention effect can be ensured and a better structural strength can be achieved to avoid rapid damage caused by water scouring.

[0053] As an optimization, the intercepting water outlets are arranged on the main flow pipe at intervals from top to bottom and left to right.

[0054] This is more conducive to improving the uniformity of water interception in each branch pipe.

[0055] As an optimization, the water inlet end of the branch pipe is bent or tilted upward and then connected to the water outlet joint.

[0056] In this way, it is more convenient for each intercepting water outlet to introduce the intercepted irrigation water into each branch pipe.

[0057] Furthermore, the height of the upward bending or tilting of the water inlet end of the branch pipe is 50 cm, so that the irrigation water can be better introduced into the branch pipe.

[0058] As a structural mode, the intercepting area of ​​the intercepting groove of each intercepting water outlet gradually increases from top to bottom along the main flow pipe.

[0059] In this way, it is possible to better achieve simultaneous water interception of each branch pipe under the condition of timed and quantitative irrigation. During the same irrigation water inflow time of the main pipe, the amount of water intercepted by each branch pipe is roughly equal. Moreover, the irrigation water in each branch pipe flows in almost at the same time, which can better improve the uniformity of irrigation of the entire irrigation pipe network.

[0060] As another structural mode, the edge of the water receiving protrusion in each intercepting water outlet is semi-elliptical as a whole, and the short side diameter is the same as the inner diameter of the main flow pipe, so that the intercepting groove occupies half the cross-sectional area of ​​the main flow pipe.

[0061] This structure enables a pair of branch pipes on the upper left and right sides of the main pipe to intercept and fill the water, and then overflow from the interception outlet to flow downward. Branch pipes at different heights are filled with water one by one from top to bottom. The advantage is that the amount of water required for each irrigation can be calculated and controlled more accurately. The disadvantage is that the upper main pipe is filled with water first, and the irrigation time is often longer, which affects the uniformity of irrigation. The uniformity of irrigation can be improved by adjusting the distance between adjacent main pipes to gradually decrease from top to bottom.

[0062] Furthermore, the diameter of the main pipe is about 10 cm, and the diameter of the water outlet joint and the branch pipe is about 5 cm, so as to better ensure the drainage and irrigation effect.

[0063] As an optimization, a water-conducting layer with strong capillary action is provided in the vegetation substrate, and the tributary pipes are buried in the water-conducting layer.

[0064] This helps the irrigation water that seeps out of the seepage holes of the tributary pipe to slowly penetrate the entire slope through the water-conducting layer to achieve irrigation.

[0065] A better option is that the water-conducting layer is obtained by using a geotextile blanket, and the tributary pipe is wrapped in the geotextile blanket.

[0066] Such geotextile blanket has excellent capillary effect and can achieve better uniform water distribution. At the same time, the tributary pipe wrapped in it can play a good protective effect and prevent insects or mud and sand in the soil from entering and damaging the tributary pipe.

[0067] Furthermore, an exhaust pipe is arranged at the end of the branch pipe, extending upward out of the vegetation substrate and communicating with the atmosphere.

[0068] In this way, the exhaust can be quickly exhausted through the exhaust pipe, which facilitates the smooth introduction of the intercepted irrigation water at the inlet end of the branch pipe, and the irrigation water entering the branch pipe quickly fills the entire pipe, and then slowly seeps through the seepage hole to achieve irrigation. This avoids the defect that the irrigation effect is good at the end close to the main pipe and poor at the end far from the main pipe. It better ensures the uniformity of irrigation.

[0069] Furthermore, the upper end of the exhaust pipe is bent downward.

[0070] It can better prevent dirt or debris from entering the exhaust pipe and causing blockage.

[0071] Furthermore, when implemented, the height of the upper end of the exhaust pipe is higher than the height of the corresponding intercepting outlet of the branch pipe. This can better avoid the waste of irrigation water from the exhaust pipe; when implemented, the height of the exhaust pipe can be selected to be about 1 meter. When implemented, the exhaust pipe can be selected to have a diameter of 1 cm, which can meet the exhaust requirements and better prevent debris from entering.

[0072] A better option during implementation is to open a seepage hole every 15 cm or so on the wall of the lower edge of the branch pipe so that the slope within the entire branch pipe range can be evenly irrigated.

[0073] As an optimization, the anchoring system includes a plurality of reinforcement nets arranged transversely along the slope, and a space for stacking vegetation substrate is formed above the reinforcement nets. Both sides of the reinforcement nets are fixed to anchor cables arranged vertically along the slope, and the upper ends of the anchor cables are fixed to anchor piles at the top of the slope.

[0074] In this way, the transversely arranged reinforcement belt net bears the gravity of the vegetation substrate on the slope, and the gravity is transferred to the anchor piles at the top of the slope through the anchor cables. In this way, the construction of anchor piles at the top of the slope is more convenient, simple and safe. The anchor piles can be constructed deeper to withstand greater tension. At the same time, compared with the form of vertical anchor piles set on the slope, the vertical setting of the top anchor piles is less likely to be unanchored under the downward pulling force, and the anchor cables can generate pressure into the slope to maintain the stability of the slope rock mass; the slope surface does not need to drill deep anchor holes, which is more conducive to maintaining the structural stability of the slope itself. Therefore, it is more convenient, fast, efficient and reliable to fix the vegetation substrate on the slope, and improve the reliability of ecological restoration.

[0075] Furthermore, the anchor cables are arranged in groups, each group has two anchor cables, the two anchor cables are arranged at intervals along a plane perpendicular to the slope, and multiple reinforcement nets are arranged at intervals along the height direction of the slope between each adjacent group of anchor cables, and the inner and outer ends of the reinforcement nets are respectively fixed on the two anchor cables of each group.

[0076] In this way, each group of two anchor cables can facilitate the installation and load-bearing of the reinforcement net. The anchor cables and the reinforcement net divide the slope into multiple corresponding grid spaces, so that an effective three-dimensional flexible force transmission structure is formed on the slope surface; the vegetation materials stacked in each space rely on the reinforcement net to bear gravity and act on the double-layer anchor cables on both sides, and then are transmitted to the anchor piles at the top of the slope through the double-layer anchor cables, so that the pressure of the upper grid space unit vegetation substrate on the lower unit vegetation substrate is very small and will not be affected by the slope height, so the height of the slope vegetation substrate is not limited by the slope height; the vegetation materials can be better fixed.

[0077] High-strength steel cables are preferably used for anchor cables to better ensure strength.

[0078] Furthermore, the reinforcement belt net is composed of reinforcement belts and positioning steel bars at both ends, and is horizontally arranged on the slope surface. The positioning steel bars at both ends of the reinforcement belt net are connected to the double-layer anchor cables on both sides through anchor cable buckles.

[0079] In this way, the installation, connection and fixation of the reinforcement belt net can be facilitated, and the fixation reliability between the reinforcement belt net and the anchor cable can be better guaranteed, thereby preventing the reinforcement belt from being separated from the anchor cable under the gravity of the vegetation material.

[0080] A better choice is to have a ribbed mesh of about 2 meters long and 23 centimeters wide, with a vertical spacing of about 1.5 meters on the slope. This ensures that the vegetation material in each grid unit where the ribbed mesh is located has a moderate gravity, ensuring the stability and reliability of the overall fixation.

[0081] Furthermore, in each group of anchor cables, the inner anchor cables are kept at a distance from the bottom of the slope.

[0082] This is because the innermost layer of the vegetation substrate is the guest soil layer. Therefore, this structure can ensure that the ribbed belt net has a fixed effect on the vegetation substrate while leaving a distance between the ribbed belt net and the bottom of the slope, so that the guest soil layer at the bottom of the vegetation substrate at the bottom of the slope can be connected into one piece, so that the roots of the plants can better grasp the surface of the slope rock and grow into one piece after entering the guest soil layer. Then, after the plants grow out, they can rely on the plant roots to better improve the structural stability of the entire slope greening system. This distance is preferably 2 cm, which can achieve the best effect.

[0083] Furthermore, the anchor pile is a steel concrete pile, the pile body of the anchor pile is embedded in the rock layer on the top of the slope, and the top and lower middle part of the anchor pile (preferably about 20 cm from the ground) are each provided with a front-to-back through and inclined anchor hole, and an anchor is installed in the anchor hole to fix the anchor cable.

[0084] In this way, the structural strength of the anchor pile itself can be better guaranteed, the load-bearing effect on the anchor cable can be guaranteed, and the gravity load of the slope vegetation substrate transmitted by the anchor cable can be endured.

[0085] Furthermore, a guide pier is provided at the top edge of the slope corresponding to each group of anchor cables, and a guide limit hole is provided through the guide pier along the front-to-back direction. The upper end of the anchor cable passes through the guide limit hole and is fixed to the anchor pile backwards.

[0086] In this way, the anchor cables are connected to the anchor piles after being guided and diverted by the guide piers. The guide piers can arrange each group of anchor cables at different positions on the top of the slope according to the design, and better bear and transmit force. They can also decompose and offset the tension of some anchor cables, thus better improving the stability and reliability of the entire anchoring system. During implementation, the guide piers are set at intervals of about 2m, which is consistent with the spacing between two adjacent groups of anchor cables.

[0087] Furthermore, the guide pier is a reinforced concrete pier and is embedded in the bedrock of the slope top. Steel pipes are buried in the top and middle and lower parts of the guide pier along the front and rear directions respectively, and the inner holes of the steel pipes form guide limit holes of the guide pier.

[0088] In this way, the construction and setting of the guide pier is convenient. When implementing, it is preferred to use a steel pipe with an inner diameter of about 1.1 times the designed anchor cable diameter to facilitate the passage of the anchor cable.

[0089] Furthermore, a row of positioning rods are vertically spaced apart on the slope surface corresponding to each group of anchor cables. The lower ends of the positioning rods are fixed to the slope surface. Positioning holes are provided on the top and middle of the positioning rods along the direction of the anchor cables, and the anchor cables can slide through the positioning holes.

[0090] In this way, since the tension of the anchor cable is borne by the anchor pile, the positioning rod basically does not bear the gravity of the planting substrate. The main function of the positioning rod is to keep the anchor cable arranged according to the required position and spacing. Therefore, the lower end of the positioning rod only needs to be fixed to the slope surface very shallowly, and there is no need to drill deep anchor holes on the slope surface to destroy the slope structure. This is convenient for construction and can better improve the overall stability of the system.

[0091] During implementation, the better size parameter selection is that the spacing between each row of positioning rods is about 2-3m, the length of the positioning rod outside the slope rock wall is about 30cm, the positioning hole in the middle and lower part of the positioning rod is set about 2cm away from the slope, and the inner diameter of the positioning hole is about 1.1 times the designed anchor cable diameter, which can achieve the best positioning effect.

[0092] Furthermore, an anchor rod is provided at the bottom of the slope below each group of anchor cables, and the lower end of the anchor rod is anchored obliquely downward in the rock layer at the bottom of the slope. The bottom of the anchor cable is fixedly connected to the anchor rod through an anchor cable buckle, and the anchor cable is in a prestressed state that applies pressure to the positioning rod into the slope.

[0093] In this way, the setting of the anchor rod makes the upper and lower ends of the anchor cable tensioned and in a prestressed state with inward pressure, so that the positioning rod is pressed inward, making it less likely to fall off, which can better improve the stability and reliability of the entire anchoring system.

[0094] In this way, after the above-mentioned anchoring system is set up, each group of vertical anchor cables and horizontal reinforcement belt nets form an effective three-dimensional flexible force transmission structure on the high and steep rock slope. When the vegetation substrate is laid on the high and steep rock slope, the gravity of all the vegetation substrates will be transmitted to the vertical double-layer anchor cables through the reinforcement belt net, and then transmitted to the anchor piles at the top of the slope through the double-layer anchor cables, thus forming a top-anchored vegetation substrate fixing system (i.e., anchoring system). Since the top-anchored vegetation substrate fixing system divides the slope vegetation substrate into many 2m×1.5m units, each unit is independent of each other, and the gravity of each unit is balanced by the tension of the anchor cable transmitted to the anchor piles at the top of the slope, the pressure of the upper unit vegetation substrate on the lower unit vegetation substrate is very small and will not be affected by the slope height. Therefore, the height of the slope vegetation substrate is not limited by the slope height, and the thickness of the vegetation substrate can remain unchanged along the entire slope height; at the same time, the damage of a single unit only has a slight impact on the adjacent lower unit, so it will not cause In addition, compared with the slope force anchor rods of the three-dimensional planting spraying technology, the positioning rods of the top anchor planting substrate fixing system on the slope are not subject to the downward gravity of the planting substrate, so the spacing between the fixing points is large and the embedding depth requirement is low, which can greatly reduce the high-risk workload on steep rock slopes and effectively improve the construction difficulty and safety; in addition, the double-layer anchor cable will apply a force perpendicular to the slope through the positioning rod, which will not only not have an adverse effect on the stability of the rock slope, but on the contrary will effectively improve the stability of the slope.

[0095] As an optimization, the vegetation substrate includes a water-holding soil layer laid on the bottom of the slope, a vegetation layer arranged above the water-holding soil layer, the vegetation layer contains plant seeds, and a water-retaining layer is also arranged above the vegetation layer, and at least one layer of gravel material is arranged in the water-retaining layer.

[0096] In this way, the water-holding guest soil layer is connected to the rock slope, has good water absorption and strong water holding capacity, and its main function is to store the water irrigated by the rainwater collection irrigation system on the rock slope, providing long-term and stable moisture for the vegetation growth on the rock slope. After the plant seeds in the vegetation layer germinate, the roots roll into the water-holding guest soil layer to absorb water and nutrients for growth. At the same time, a water-retaining layer mainly formed by angular gravel materials is set up, which can take advantage of the weak capillary water effect of angular gravel materials to better avoid water evaporation and achieve water conservation and maintenance. It is more conducive to the growth and restoration of slope vegetation. During implementation, the thickness of the water-holding guest soil layer is preferably about 10 cm, which can better ensure the above effect.

[0097] As an optimal choice, the water-holding soil layer is made by three-dimensional mesh spraying, which has the characteristics of simple, convenient and fast construction, and is more suitable for areas with relatively sufficient construction water.

[0098] As another optimization option, the water-holding soil layer is obtained by piling soil bags, which has the characteristics of low cost and is more suitable for construction areas where water is relatively scarce.

[0099] Furthermore, a water-conducting layer with strong capillary action is arranged between the water-holding soil layer and the vegetation layer.

[0100] In this way, the water conducting layer can evenly distribute the irrigation water to the water-holding soil layer of the entire slope, better ensuring the irrigation effect. At the same time, the setting of the water conducting layer can effectively increase the distance between the upper and lower adjacent pipes of the horizontal branch pipes used for irrigation, reduce the amount of branch pipes used, and reduce the project cost.

[0101] Furthermore, the water-conducting layer is obtained by laying geotextiles, which has the advantages of low cost, easy implementation, good water-conducting effect, etc.

[0102] Furthermore, the geotextile blanket is wrapped with a branch pipe for irrigation. In this way, the water irrigated by the branch pipe directly passes through the geotextile blanket water-conducting layer, achieving uniform water distribution on the slope surface, better improving the uniformity of irrigation. At the same time, it is beneficial to protect the branch pipe and extend its service life.

[0103] During implementation, the thickness of the geotextile blanket is preferably about 1 cm. If it is too thin, the water distribution and water conduction effect will be poor, and if it is too thick, it will easily affect the range of water conduction and the growth of plant roots.

[0104] During implementation, the vegetation layer can be formed by mixing vegetation materials with plant seeds, stirring and pressing, and the thickness is preferably about 8 cm. The vegetation materials can be a mixture of crushed straw, organic fertilizer, plant growth regulator and soil, which can be specifically formulated by existing formula technology and will not be described in detail here.

[0105] As an optimization, the water retention layer is composed of two layers of straw blankets and a layer of angular gravel material sandwiched between the two layers of straw blankets.

[0106] In this way, the inner straw blanket can serve as a transition buffer between the angular gravel material and the vegetation layer, which is conducive to the growth of plants breaking through the water-retaining layer. The outer straw blanket can prevent the angular gravel from sliding off before being fixed by the vegetation growth. At the same time, it can introduce insects, birds and other creatures from the outside to stay or move in, and then bring in some native plant seeds to grow, which is conducive to ecological restoration. At the same time, the straw blanket can be used as a plant nutrient source after rotting for a period of time, so it is more conducive to the growth of plants on the slope and ecological restoration as a whole.

[0107] As an optimization, the brecciated material layer is composed of brecciated-three-dimensional polymer fiber mesh, and the brecciated-three-dimensional polymer fiber mesh is specifically obtained by filling brecciated with a particle size of 0.5-2 cm into the three-dimensional polymer fiber mesh.

[0108] In this way, the construction is more convenient. When implemented, the thickness of the two layers of straw blanket is preferably about 2 cm, the thickness of the breccia material layer composed of the breccia-three-dimensional polymer fiber net in the middle is preferably about 4 cm, and the fiber net aperture is preferably 1-2.5 cm, which can better ensure the above effect.

[0109] As an optimization, the vegetation layer is paved by prefabricated vegetation layer blocks, and the water retention layer is paved by prefabricated water retention layer blocks.

[0110] In this way, both the vegetation layer and the water-retaining layer are produced in a standardized factory to form a block structure, and during construction, only simple stacking and fixing are required, which greatly improves the construction efficiency. The block structure preferably uses a rectangular block with a length × width = 74 cm × 49 cm.

[0111] As an optimization, mesh pins are also provided. The mesh pins are composed of pins and a net connecting the pins at the tails of the pins. The mesh pins pass through the vegetation layer blocks and the water conducting layer from the outside of the water retention layer blocks and are inserted and fixed into the water-holding soil layer.

[0112] This is more conducive to efficient and rapid construction to obtain a structurally stable and reliable planting substrate structure.

[0113] In specific implementation, the mesh pins are preferably made of highly corrosion-resistant polymer materials. During construction, the water-retaining layer blocks and the vegetation layer blocks can be fixed together in advance by mesh pins to form a combined layer of the vegetation layer and the water-retaining layer. The pin length is preferably about 25 cm, which is 9 cm longer than the combined thickness of the vegetation layer and the water-retaining layer. After being transported to the site, the combined layer with the mesh pins is manually fixed to the water-holding soil layer by pins, thereby achieving the fixation of the vegetation layer and the water-retaining layer on the slope and forming a multi-layer water-retaining bio-base material with strong water retention. It has the characteristics of being very convenient, fast and efficient in construction.

[0114] Therefore, the present application has the following outstanding beneficial effects: ① The top-anchored vegetation substrate fixing structure can realize that the laying height of the vegetation substrate on the steep rock slope is not limited by the slope gradient and height, and the laying thickness can remain unchanged along the entire slope height; ② The top-anchored vegetation substrate fixing structure can effectively support the slope surface of the steep rock slope and improve the stability of the slope surface; ③ The top-anchored vegetation substrate fixing structure can fix the vegetation substrate in a unitized manner, and the overall collapse and sliding disaster of the vegetation substrate will not occur, and there are fewer positioning rods on the slope surface, which effectively reduces the engineering volume and engineering cost; ④ The rainwater collection and irrigation system can realize the collection of rainfall on the top of the slope, automatic control of irrigation water volume, effective use of natural rainfall, and effectively reduce the cost of later cultivation; ⑤ The multi-layered water-retaining vegetation substrate can effectively retain water and enable the slope surface to achieve long-term and stable water supply; ⑥ The multi-layered water-retaining vegetation substrate can realize standardized production and construction, modular assembly, simple process, fast construction speed, safety and economy.

[0115] In summary, the present invention has the advantages of being able to better collect rainwater for regular irrigation, reducing the dependence of irrigation control on electrical equipment, improving the ecological restoration effect of slope greening, and improving construction safety and economy. It is particularly suitable for vegetation restoration and greening of steep rocky slopes in arid areas. BRIEF DESCRIPTION OF THE DRAWINGS

[0116] Figure 1 It is a schematic structural diagram of the rainwater collection and irrigation system in a specific implementation manner of the present invention.

[0117] Figure 2 yes Figure 1 A partial enlarged schematic diagram showing the filtration structure in a separate rainwater collection and storage unit.

[0118] Figure 3 for Figure 1 Schematic diagram of a separate automatic watering control device.

[0119] Figure 4 for Figure 3 Schematic diagram of the structure of the separate flow control float part.

[0120] Figure 5 for Figure 1 Schematic diagram of the structure of separate main pipes, branch pipes and water outlet joints.

[0121] Figure 6 It is a schematic structural diagram of the anchoring system in a specific embodiment of the present invention.

[0122] Figure 7 for Figure 6 Left view of .

[0123] Figure 8 for Figure 7 Schematic diagram of the structure of the middle anchor pile part.

[0124] Fig. 9 for Figure 6 Schematic diagram of the structure of the middle guide pier.

[0125] Fig.10 for Figure 6 Schematic diagram of the structure of the middle reinforcement belt mesh part from the top view.

[0126] Fig.11 for Figure 6 Schematic diagram of the structure of the middle positioning rod part from a top view.

[0127] Fig.12 It is a schematic diagram of the structure of a separate planting substrate in a specific embodiment of the present invention.

[0128] Fig.13 It is a schematic diagram of the structure of the mesh pins in a specific implementation manner of the present invention.

[0129] Fig.14 yes Fig.13 Side view from the other direction.

[0130] Fig.15It is a structural schematic diagram of the prefabricated parts for slope repair construction in a specific implementation manner of the present invention. DETAILED DESCRIPTION

[0131] The present invention is further described in detail below in conjunction with specific implementation modes.

[0132] Best practice: Figures 1 to 15 shown.

[0133] A rock slope ecological restoration system, comprising a rainwater collection and storage unit arranged at the top of the slope, a vegetation substrate C laid and fixed on the slope, an anchoring system B for fixing the vegetation substrate and an irrigation pipe network A-4 buried in the vegetation substrate, wherein the water inlet end of the irrigation pipe network is connected to the rainwater collection and storage unit; wherein the rainwater collection and storage unit (see Figure 1 ) includes a water collection tank A-1 arranged on the top of the slope and adjacent to the side slope, a filtering structure is arranged in the water collection tank, a water storage chamber A-2 is arranged at the edge of the water collection tank, and the water in the water collection tank can be immersed in the water storage chamber, and the water storage chamber is connected to the water inlet end of the irrigation pipe network A-4. The rainwater collection and storage unit and the irrigation pipe network together constitute the rainwater collection and irrigation system A.

[0134] In this way, when it rains, the surface runoff from the mountain above the slope can be collected in the rainwater collection and storage unit, filtered by the filtering structure, and then immersed in the water storage chamber, where clean rainwater can be collected as a water source for irrigation. This makes full use of rainwater resources, and the particles and mud and sand impurities in the rainwater are removed after filtering, which can better avoid the blockage of the irrigation pipe network and extend the service life of the irrigation system.

[0135] Among them, the water collection trough is set at the lowest point of the mountain above the slope.

[0136] In this way, it is more convenient for rainwater from the mountain above the slope to gather and flow into the ditch, thereby improving the effect of rainwater collection and utilization.

[0137] The bottom of the water collecting tank is tilted, and the water storage chamber is connected to the lowest point of the bottom of the water collecting tank.

[0138] In this way, the rainwater collected in the sump can be more easily infiltrated into the water storage chamber more smoothly.

[0139] The bottom of the water collecting tank is in the shape of a triangle with the middle bulging upward and the two sides tilted downward. There are two water storage chambers which are respectively connected and arranged on both sides of the water collecting tank.

[0140] In this way, a water source is set on each side of the irrigation pipe network, which makes it easier for the irrigation pipe network to drain water to various parts of the slope more evenly and stably, avoiding the phenomenon of unilateral concentration.

[0141] Among them, see Figure 1 and Figure 2The filtering structure comprises a pebble layer A-1-1, a gravel layer A-1-2, a coarse sand layer A-1-3, a medium sand layer A-1-4 and a fine sand layer A-1-5 which are laid sequentially from top to bottom, and the particle size of the materials in each layer decreases sequentially from top to bottom.

[0142] In this way, the use of 5 layers of sand and gravel with different particle sizes can better improve the layer-by-layer filtration effect of each layer of filter material in the water collection tank, and better collect clean water resources. At the same time, this structure can also effectively reduce the capillary effect in the water collection tank, prevent the collected water from evaporating again, and better retain water.

[0143] Among them, the bottom surface of the sump is obtained by pouring concrete to form a water-dividing concrete layer A-1-6.

[0144] This makes it easier to obtain the desired inclination of the bottom surface of the trough during construction, and can also better ensure the anti-seepage effect of the bottom surface of the trough.

[0145] A better option is to have a slope of about 3% on both sides of the bottom of the sump, which can better guide rainwater to flow into the water storage chambers on both sides.

[0146] Among them, the water storage chamber A-2 is an integrally cast reinforced concrete chamber.

[0147] In this way, it can be ensured that it has good anti-seepage ability.

[0148] Among them, permeable bricks A-2-1 are arranged between the water storage chamber A-2 and the fine sand layer A-1-5 at the bottom of the water collection tank.

[0149] This can better ensure that the sediment in the rainwater is filtered out before entering the water storage chamber, preventing the sediment from entering the water storage chamber, ensuring the smoothness and stability of the irrigation pipe network, and extending the service life of the system.

[0150] Among them, the top cover of the water storage chamber is provided with a removable concrete cover plate A-2-2.

[0151] In this way, the water storage chamber is in a closed state as a whole, which can prevent mud and sand from penetrating from the top of the water storage chamber, and the cover can also be opened to facilitate the later maintenance of the water storage chamber.

[0152] Among them, a stainless steel ventilation pipe A-2-3 is arranged on the concrete cover plate, the lower end of the ventilation pipe is exposed on the lower surface of the concrete cover plate, and the upper end of the ventilation pipe is higher than the ground and is bent downward.

[0153] In this way, the water storage chamber can be connected to the atmosphere, so that the water stored in the water storage chamber can be more smoothly controlled to flow into the irrigation pipe network as a water source to achieve irrigation. And the vent pipe mouth is downward to prevent the ground soil and rocks from falling into the water storage chamber. When implemented, the upper end of the vent pipe mouth is preferably 50 cm above the ground to prevent mud from splashing into the mouth when it rains.

[0154] In this embodiment, see Figure 1 , Figure 3-Figure 4 , and also includes an automatic irrigation control device A-3 arranged between the water storage chamber and the irrigation pipe network, the automatic irrigation control device is used to control the water storage chamber to supply water to the irrigation pipe network at a fixed time and in a fixed quantity.

[0155] In this way, the water supply of the processing network can be controlled at a fixed time and quantity, ensuring the irrigation effect at a fixed time and quantity.

[0156] Among them, the automatic irrigation control device A-3 includes a water control chamber A-3-4 located below the water storage chamber, a vertically arranged water control tank bracket A-3-6 in the water control chamber, a water control tank A-3-5 is hingedly arranged on the upper end of the water control tank bracket, the specific gravity of the bottom of the water control tank is greater than that of the rest of the parts and the hinge point is located at the middle and rear position, so that when the water control tank is empty, the center of gravity is located behind the hinge point and after a certain proportion of water is filled, the center of gravity can move forward (forward toward the outlet end of the water control tank) beyond the hinge point position, when the water control tank is empty, the box mouth is upward and arranged opposite to the water outlet of the water storage chamber, and when the box mouth of the water control tank is tilted downward, the box mouth is opposite to the main stream pipe inlet of the irrigation network.

[0157] In this way, a reversible water control tank is set in the water control room. The center of gravity of the water control tank is located so that the box mouth faces upward when the water control tank is empty. The water stored in the upper water storage chamber is injected into the water control tank through the water outlet. After the water injection exceeds a certain proportion, the box mouth of the water control tank tilts downward and pours the water into the main stream pipe inlet of the irrigation network. In this way, a purely mechanical structure is used to achieve quantitative control of rainwater entering the irrigation network each time. There is no need to use electric control valves, which avoids the restriction of electricity consumption, has better reliability and stability, and a longer service life.

[0158] Among them, the plane where the box opening of the water control tank is located is inclined, and when the tank is empty, the plane where the box opening is located faces upward.

[0159] In this way, the water in the water storage tank can flow into the water control tank better when the tank is empty, and the water can be poured out into the main stream pipe inlet of the irrigation pipe network better when the water control tank is dumped.

[0160] Among them, the water control box includes an external adjustment frame A-3-3 and a box body installed in the adjustment frame. The adjustment frame is overall groove-shaped and hinged at the upper end of the water control tank bracket. Adjustment fixing screws are horizontally penetrated on both sides of the adjustment frame. The adjustment fixing bolts are rotatably screwed on the adjustment frame and the inner ends are abutted against the box body to fix the box body. A counterweight block A-3-7 is inserted at the bottom of the groove of the adjustment frame.

[0161] In this way, the amount of water in the water control tank can be flexibly adjusted when it is tipped over by changing the upper and lower positions of the box body in the adjustment frame and increasing or decreasing the counterweight, so that the amount of water poured into the irrigation pipe network each time can be adjusted to better match the size of the slope area. In specific implementation, the middle part of the lower end of the adjustment frame has a horizontal hinge shaft and is rotatably hinged to the upper end of the water control tank bracket by the hinge shaft. In specific implementation, the upper end of the empty water tank bracket can be designed as a U-shaped fork to facilitate the installation of the water control tank. When the water control tank is installed, the installation position and specific gravity are adjusted so that the water control tank can open upward when there is no water and form an angle of about 15 degrees with the horizontal plane; when the water in the water tank reaches the designed water volume and is dumped, the opening downward also forms an angle of about 15 degrees with the horizontal plane. In this way, it can be ensured that the water tank can return to the state of opening upward after dumping the water; and the circulation function of being able to dump again after reaching the designed water volume.

[0162] Among them, a water pipe A-3-2 is arranged in the water storage chamber, and the lower end of the water pipe passes downward through the water storage chamber in a sealed manner and extends to above the opening of the water control tank.

[0163] In this way, the rainwater in the water storage chamber can be better and more accurately introduced into the water control tank by relying on the water pipe.

[0164] Among them, the water pipe A-3-2 is a hose and its length exceeds the height of the inner cavity of the water storage chamber. The upper end of the water pipe is connected to a flow control float A-3-1 floating on the water surface. A limiting flow hole A-3-1c is horizontally penetrated on the part of the flow control float immersed under the water surface. An air vent A-3-1d is also vertically penetrated on the flow control float. The air vent and the flow limiting hole are cross-connected; the lower end of the air vent and the upper end of the water pipe are sealed and connected.

[0165] In this way, the water in the water storage chamber can be drained into the water pipe through the flow limiting hole and flow out to the water control tank. The flow limiting hole can be set small enough to extend the time required for the water in the water control tank to be dumped once. The setting of the flow control float can ensure that no matter how much water is left in the water storage chamber, the flow limiting hole is always at a fixed height from the water surface, ensuring that the water flow entering the water pipe through the flow limiting hole remains constant. In addition, it is ensured that the time required for the water in the water control tank to be dumped once is fixed. Therefore, relying on a purely mechanical structure, the timed and quantitative automatic water supply to the irrigation network is guaranteed. At the same time, the setting of the vent hole can achieve exhaust, so that the flow limiting hole can stably supply water downward.

[0166] The diameter of the vent hole A-3-1d is more than 4 times the diameter of the flow limiting hole A-3-1c, so that the diameter of the vent hole is large enough to avoid mutual obstruction between the exhaust and the water flow, thereby affecting the amount of water flowing in through the flow limiting hole.

[0167] Among them, the lower part of the flow control float is a solid float entity A-3-1a, and the upper part is a hollow float cavity A-3-1b. The limit hole is located on the float entity A-3-1a, and the vent hole and the float cavity A-3-1b are isolated and sealed from each other.

[0168] Among them, a counterweight material inlet communicating with the float cavity is also opened at the upper end of the flow control float.

[0169] In this way, the weight material can be added into the floating ball cavity through the weight material inlet, thereby adjusting the draft of the floating ball, and then adjusting the flow rate of the water flowing into the water pipe through the flow restriction hole. Then, the interval time of each water supply can be adjusted as needed to better adapt it to the area size of the slope.

[0170] In this way, the working principle of the automatic irrigation control device is as follows: since the float will rise and fall with the rise and fall of the water level in the water storage chamber, the depth of immersion in the water is kept unchanged, so that the water pressure of the flow limiting hole at 1 / 4 of the bottom surface of the water control float remains unchanged, and stable control of the amount of water entering the vent through the flow limiting hole is achieved; since the vent and the float cavity are mutually sealed and isolated, the water entering the vent will not enter the float cavity, ensuring that the vent exhausts upward without affecting the buoyancy and immersion depth of the float; the water entering the vent flows into the water control tank through the water pipe at the lower end of the float When in use, the center of gravity of the water control tank in the waterless state deviates from the water control tank bracket and deviates to one side of the bottom of the water control tank, so that when the water control tank has not reached the designed water volume, the box mouth is upward to receive the water flowing from the water pipe. As the water in the water control tank increases, the center of gravity of the water control tank gradually moves toward the box mouth. When the water volume reaches the designed water volume, the center of gravity of the water control tank passes the position of the water control tank bracket and moves to one side of the box mouth, causing the water control tank to tip over. After tipping over, the water control tank returns to the state of the box mouth facing upward. This cycle is repeated to achieve periodic, timed and quantitative automatic irrigation.

[0171] Among them, see Figure 1 and Figure 5 The irrigation pipe network A-4 includes a main stream pipe A-4-1 arranged downward along the slope surface, the water inlet at the upper end of the main stream pipe is connected to the automatic irrigation device (specifically connected to the bottom of the water control chamber), and branch pipes A-4-3 are arranged on the main stream pipe at intervals. The branch pipes are arranged horizontally along the slope and buried in the vegetation substrate, and seepage holes A-4-3a are arranged on the branch pipes at intervals.

[0172] In this way, during watering, the automatic watering device supplies water to the main pipe at a regular time and in a fixed quantity, and the water directly seeps into the vegetation substrate through the branch pipes and the seepage holes thereon, which can better avoid water evaporation and improve the utilization effect of water resources.

[0173] Among them, in the main flow pipe A-4-1, multiple intercepting water outlets A-4-2 are arranged at intervals from top to bottom; the intercepting water outlet A-4-2 includes a water outlet joint A-4-2b connected to the main flow pipe, and the lower edge of the junction between the water outlet joint and the main flow pipe extends obliquely upward to the inner cavity of the main flow pipe to form a sheet-like water collecting protrusion, and the edge of the water collecting protrusion and the inner cavity of the main flow pipe are surrounded by an intercepting groove A-4-2a; the outer end of the water outlet joint is fixedly connected to the branch pipe.

[0174] In this way, each irrigation in the present application is a timed and quantitative irrigation, which solves the problem of sufficient irrigation near the water source and insufficient irrigation at the end of the pipe network due to long-term small-flow irrigation. Timed and quantitative irrigation has the characteristics of large water and short time. If the conventional irrigation pipe network is arranged, it is impossible to achieve equal irrigation of branch pipes at different heights on the same main pipe. Therefore, the above-mentioned interception-type water outlet structure is set in the present application. In this way, when the main pipe is quantitatively supplied with water each time, the quantitatively supplied water flows downward from the main pipe, and each branch pipe relies on the interception groove to actively intercept and introduce water into each branch pipe smoothly and quickly, ensuring the water supply effect for each branch pipe. At the same time, the structure can ensure that the amount of water connected to each branch pipe at different heights is balanced by adjusting the size of the interception groove, thereby providing a balanced irrigation effect.

[0175] Among them, the water collecting protrusion is inclined upward at an angle of about 45 degrees.

[0176] In this way, a better water retention effect can be ensured and a better structural strength can be achieved to avoid rapid damage caused by water scouring.

[0177] Among them, the intercepting water outlets A-4-2 are arranged on the main flow pipe at intervals from top to bottom and left to right.

[0178] This is more conducive to improving the uniformity of water interception in each branch pipe.

[0179] The water inlet end of the branch pipe is bent or tilted upward and then connected to the water outlet joint.

[0180] In this way, it is more convenient for each intercepting water outlet to introduce the intercepted irrigation water into each branch pipe.

[0181] The height of the upward bending or tilting of the water inlet end of the branch pipe is 50 cm, so that the irrigation water can be better introduced into the branch pipe.

[0182] In this embodiment, the intercepting area of ​​the intercepting groove of each intercepting water outlet gradually increases from top to bottom along the main flow pipe.

[0183] In this way, it is possible to better achieve simultaneous water interception of each branch pipe under the condition of timed and quantitative irrigation. During the same irrigation water inflow time of the main pipe, the amount of water intercepted by each branch pipe is equal. Moreover, the irrigation water inflows into each branch pipe almost at the same time, which can better improve the uniformity of irrigation of the entire irrigation pipe network.

[0184] As another feasible structural method, the edge of the water receiving protrusion in each intercepting water outlet is semi-elliptical as a whole, and the short side diameter is the same as the inner diameter of the main flow pipe, so that the intercepting groove occupies half the cross-sectional area of ​​the main flow pipe.

[0185] This structure enables a pair of branch pipes on the upper left and right sides of the main pipe to intercept and fill the water, and then overflow from the interception outlet to flow downward. Branch pipes at different heights are filled with water one by one from top to bottom. The advantage is that the amount of water required for each irrigation can be calculated and controlled more accurately. The disadvantage is that the upper main pipe is filled with water first, and the irrigation time is often longer, which affects the uniformity of irrigation. The uniformity of irrigation can be improved by adjusting the distance between adjacent main pipes to gradually decrease from top to bottom.

[0186] In this embodiment, the diameter of the main pipe is about 10 cm, and the diameter of the water outlet joint and the branch pipe is about 5 cm, so as to better ensure the drainage and irrigation effect.

[0187] Among them, a water-conducting layer with strong capillary action is arranged in the vegetation substrate, and the branch pipe is buried in the water-conducting layer.

[0188] This helps the irrigation water that seeps out of the seepage holes of the tributary pipe to slowly penetrate the entire slope through the water-conducting layer to achieve irrigation.

[0189] In this embodiment, the water-conducting layer is obtained by using a geotextile blanket, and the branch pipe is wrapped in the geotextile blanket.

[0190] Such geotextile blanket has excellent capillary effect and can achieve better uniform water distribution. At the same time, the tributary pipe wrapped in it can play a good protective effect and prevent insects or mud and sand in the soil from entering and damaging the tributary pipe.

[0191] Among them, an exhaust pipe A-4-4 is arranged at the end of the branch pipe A-4-3, which extends upward out of the vegetation substrate and communicates with the atmosphere.

[0192] In this way, the exhaust can be quickly exhausted through the exhaust pipe, which facilitates the smooth introduction of the intercepted irrigation water at the inlet end of the branch pipe, and the irrigation water entering the branch pipe quickly fills the entire pipe, and then slowly seeps through the seepage hole to achieve irrigation. This avoids the defect that the irrigation effect is good at the end close to the main pipe and poor at the end far from the main pipe. It better ensures the uniformity of irrigation.

[0193] The upper end of the exhaust pipe is bent downward.

[0194] It can better prevent dirt or debris from entering the exhaust pipe and causing blockage.

[0195] Among them, when implementing, the height of the upper end of the exhaust pipe is higher than the height of the corresponding interception outlet of the branch pipe. It can better avoid the waste of irrigation water from the exhaust pipe; when implementing, the height of the exhaust pipe can be selected to be about 1 meter. When implementing, the exhaust pipe can be selected to have a diameter of 1cm, which can meet the exhaust requirements and better prevent debris from entering.

[0196] A better option in implementation is to open a seepage hole A-4-3a every 15 cm on the lower edge wall of the branch pipe A-4-3 so that the slope within the entire branch pipe range can be evenly irrigated.

[0197] In this embodiment, see Figure 6-Figure 11 The anchoring system B includes a plurality of ribbed nets B-6 arranged transversely along the slope, and a space for stacking vegetation substrate is formed above the ribbed nets. Both sides of the ribbed nets are fixed to anchor cables B-5 arranged vertically along the slope, and the upper ends of the anchor cables are fixed to anchor piles B-1 at the top of the slope.

[0198] In this way, the transversely arranged reinforcement belt net bears the gravity of the vegetation substrate on the slope, and the gravity is transferred to the anchor piles at the top of the slope through the anchor cables. In this way, the construction of anchor piles at the top of the slope is more convenient, simple and safe. The anchor piles can be constructed deeper to withstand greater tension. At the same time, compared with the form of vertical anchor piles set on the slope, the vertical setting of the top anchor piles is less likely to be unanchored under the downward pulling force, and the anchor cables can generate pressure into the slope to maintain the stability of the slope rock mass; the slope surface does not need to drill deep anchor holes, which is more conducive to maintaining the structural stability of the slope itself. Therefore, it is more convenient, fast, efficient and reliable to fix the vegetation substrate on the slope, and improve the reliability of ecological restoration.

[0199] Among them, the anchor cables are arranged in groups, each group has two anchor cables, the two anchor cables are arranged at intervals along a plane perpendicular to the slope, and multiple reinforcement nets are arranged at intervals along the height direction of the slope between each two adjacent groups of anchor cables, and the inner and outer ends of the reinforcement nets on both sides are respectively fixed on the two anchor cables of each group.

[0200] In this way, each group of two anchor cables can facilitate the installation and load-bearing of the reinforcement net. The anchor cables and the reinforcement net divide the slope into multiple corresponding grid spaces, so that an effective three-dimensional flexible force transmission structure is formed on the slope surface; the vegetation materials stacked in each space rely on the reinforcement net to bear gravity and act on the double-layer anchor cables on both sides, and then are transmitted to the anchor piles at the top of the slope through the double-layer anchor cables, so that the pressure of the upper grid space unit vegetation substrate on the lower unit vegetation substrate is very small and will not be affected by the slope height, so the height of the slope vegetation substrate is not limited by the slope height; the vegetation materials can be better fixed.

[0201] High-strength steel cables are preferably used for anchor cables to better ensure strength.

[0202] Among them, the reinforcement belt mesh is composed of reinforcement belt B-6-1 and positioning steel bars B-6-2 at both ends, and is arranged horizontally on the slope surface. The positioning steel bars B-6-2 at both ends of the reinforcement belt mesh are connected to the double-layer anchor cables B-5 on both sides through anchor buckles B-5-1.

[0203] In this way, the installation, connection and fixation of the reinforcement belt net can be facilitated, and the fixation reliability between the reinforcement belt net and the anchor cable can be better guaranteed, thereby preventing the reinforcement belt B-6-1 from being separated from the anchor cable under the gravity of the vegetation material.

[0204] In this embodiment, the ribbed mesh B-6 is about 2m long and 23cm wide, and the vertical interval of the ribbed mesh B-6 on the slope is about 1.5m. This ensures that the vegetation material in each grid unit where the ribbed mesh is located has moderate gravity, ensuring the stability and reliability of the overall fixation.

[0205] In this embodiment, in each group of anchor cables, the inner anchor cables are kept at a distance from the bottom of the slope.

[0206] This is because the innermost layer of the vegetation substrate is the guest soil layer. Therefore, this structure can ensure that the ribbed belt net has a fixed effect on the vegetation substrate while leaving a distance between the ribbed belt net and the bottom of the slope, so that the guest soil layer at the bottom of the vegetation substrate at the bottom of the slope can be connected into one piece, so that the roots of the plants can better grasp the surface of the slope rock and grow into one piece after entering the guest soil layer. Then, after the plants grow out, they can rely on the plant roots to better improve the structural stability of the entire slope greening system. This distance is preferably 2 cm, which can achieve the best effect.

[0207] Among them, a guide pier B-2 is also set at the top edge of the slope corresponding to each group of anchor cables, and a guide limit hole B-2-1 is set through the guide pier along the front-to-back direction. The upper end of the anchor cable passes through the guide limit hole and is fixed to the anchor pile backward.

[0208] In this way, the anchor cables are connected to the anchor piles after being guided and diverted by the guide piers. The guide piers can arrange each group of anchor cables at different positions on the top of the slope according to the design, and better bear and transmit force. They can also decompose and offset the tension of some anchor cables, thus better improving the stability and reliability of the entire anchoring system. During implementation, the guide piers are set at intervals of about 2m, which is consistent with the spacing between two adjacent groups of anchor cables.

[0209] Among them, the guide pier is a reinforced concrete pier and is embedded in the bedrock on the top of the slope. Steel pipes are buried in the top and middle and lower parts of the guide pier along the front and rear directions respectively, and the inner holes of the steel pipes form the guide limit holes B-2-1 of the guide pier.

[0210] In this way, the construction and setting of the guide pier is convenient. When implementing, it is preferred to use a steel pipe with an inner diameter of about 1.1 times the designed anchor cable diameter to facilitate the passage of the anchor cable.

[0211] Among them, the anchor pile B-1 is a steel concrete pile. The pile body of the anchor pile is embedded in the stable rock layer on the top of the slope. There are front-to-back through and inclined anchor holes B-1-2 at the top and middle-lower part of the anchor pile (preferably about 20 cm from the ground). The anchor B-1-1 is installed in the anchor hole B-1-2 and is used to fix the anchor cable.

[0212] In this way, the structural strength of the anchor pile itself can be better guaranteed, the load-bearing effect on the anchor cable can be guaranteed, and the gravity load of the slope vegetation substrate transmitted by the anchor cable can be endured.

[0213] Among them, a row of positioning rods B-3 are vertically spaced on the slope surface corresponding to each group of anchor cables. The lower end of the positioning rod is fixed to the slope surface. Positioning holes B-3-1 are set on the top and middle of the positioning rod along the direction of the anchor cable, and the anchor cable can slide through the positioning hole.

[0214] In this way, since the tension of the anchor cable is borne by the anchor pile, the positioning rod basically does not bear the gravity of the planting substrate. The main function of the positioning rod is to keep the anchor cable arranged according to the required position and spacing. Therefore, the lower end of the positioning rod only needs to be fixed to the slope surface very shallowly, and there is no need to drill deep anchor holes on the slope surface to destroy the slope structure. This is convenient for construction and can better improve the overall stability of the system.

[0215] During implementation, the better size parameter selection is that the spacing between each row of positioning rods is about 2-3m, the length of the positioning rod outside the slope rock wall is about 30cm, the positioning hole in the middle and lower part of the positioning rod is set about 2cm away from the slope, and the inner diameter of the positioning hole is about 1.1 times the designed anchor cable diameter, which can achieve the best positioning effect.

[0216] Among them, an anchor rod B-4 is also arranged at the bottom of the slope below each group of anchor cables. The lower end of the anchor rod is anchored obliquely downward in the rock layer at the bottom of the slope. The bottom of the anchor cable is fixedly connected to the anchor rod through an anchor cable buckle, and the anchor cable is in a prestressed state that applies pressure to the positioning rod into the slope.

[0217] In this way, the setting of the anchor rod makes the upper and lower ends of the anchor cable tensioned and in a prestressed state with inward pressure, so that the positioning rod is pressed inward, making it less likely to fall off, which can better improve the stability and reliability of the entire anchoring system.

[0218] In this way, after the above-mentioned anchoring system is set up, each group of vertical anchor cables B-5 and horizontal reinforcement belt net B-6 form an effective three-dimensional flexible force transmission structure on the high and steep rock slope. When the vegetation substrate is laid on the high and steep rock slope, the gravity of all the vegetation substrates will be transmitted to the vertical double-layer anchor cables B-5 through the reinforcement belt net B-6, and then transmitted to the anchor pile B-1 at the top of the slope through the double-layer anchor cables B-5, thus forming a top-anchored vegetation substrate fixing system (i.e., anchoring system). Since the top-anchored vegetation substrate fixing system divides the slope vegetation substrate into many 2m×1.5m units, each unit is independent of each other, and the gravity of each unit is balanced by the tension of the anchor cable transmitted to the anchor pile at the top of the slope, the pressure of the upper unit vegetation substrate on the lower unit vegetation substrate is very small and will not be affected by the slope height. Therefore, the height of the slope vegetation substrate is not limited by the slope height, and the thickness of the vegetation substrate can be kept constant along the entire slope height; at the same time, the damage of a single unit only has a slight impact on the adjacent lower unit, so that the vegetation substrate will not occur. In addition, compared with the slope force anchor rods of the three-dimensional planting and spraying technology, the positioning rods of the top anchor planting substrate fixing system on the slope are not subject to the downward gravity of the planting substrate, so the spacing between the fixing points is large and the embedding depth requirement is low, which can greatly reduce the high-risk workload on steep rock slopes and effectively improve the construction difficulty and safety. In addition, the double-layer anchor cable B-5 will apply a force perpendicular to the slope through the positioning rod, which will not only not have an adverse effect on the stability of the rock slope, but on the contrary will effectively improve the stability of the slope.

[0219] In this embodiment, see Figure 12-Figure 15 The vegetation substrate C includes a water-holding soil layer C-1 laid on the bottom of the slope, a vegetation layer C-3 arranged above the water-holding soil layer, the vegetation layer contains plant seeds, and a water-retaining layer C-4 is also arranged above the vegetation layer, and at least one layer of gravel material is arranged in the water-retaining layer.

[0220] In this way, the water-holding guest soil layer C-1 is connected to the rock slope, has good water absorption and strong water holding capacity, and its main function is to store the water irrigated by the rainwater collection irrigation system A on the rock slope, providing long-term and stable moisture for the vegetation growth on the rock slope. After the plant seeds in the vegetation layer germinate, the roots roll into the water-holding guest soil layer to absorb water and nutrients for growth. At the same time, a water-retaining layer mainly formed by angular gravel materials is set up, which can take advantage of the weak capillary water effect of angular gravel materials to better avoid water evaporation and achieve water conservation and maintenance. It is more conducive to the growth and restoration of slope vegetation. During implementation, the thickness of the water-holding guest soil layer is preferably about 10 cm, which can better ensure the above effect.

[0221] In this embodiment, the water-holding soil layer is made by three-dimensional mesh spraying, which has the characteristics of simple, convenient and fast construction, and is more suitable for areas with relatively sufficient construction water.

[0222] As another possible implementation option, the water-holding soil layer is obtained by piling soil bags, which has the characteristics of low cost and is more suitable for construction areas where water is relatively scarce.

[0223] In this embodiment, a water-conducting layer C-2 with strong capillary action is further provided between the water-holding soil layer C-1 and the vegetation layer C-3.

[0224] In this way, the water conducting layer can evenly distribute the irrigation water to the water-holding soil layer of the entire slope, better ensuring the irrigation effect. At the same time, the setting of the water conducting layer can effectively increase the distance between the upper and lower adjacent pipes of the horizontal branch pipes used for irrigation, reduce the amount of branch pipes used, and reduce the project cost.

[0225] The water-conducting layer is obtained by laying geotextile blanket, which has the advantages of low cost, easy implementation and good water-conducting effect.

[0226] Among them, the geotextile blanket is wrapped with a branch pipe for irrigation. In this way, the water irrigated by the branch pipe directly passes through the geotextile blanket water-conducting layer, achieving uniform water distribution on the slope surface, better improving the uniformity of irrigation. At the same time, it is beneficial to protect the branch pipe and extend its service life.

[0227] During implementation, the thickness of the geotextile blanket is preferably about 1 cm. If it is too thin, the water distribution and water conduction effect will be poor, and if it is too thick, it will easily affect the range of water conduction and the growth of plant roots.

[0228] During implementation, the vegetation layer can be formed by mixing vegetation materials with plant seeds, stirring and pressing, and the thickness is preferably about 8 cm. The vegetation materials can be a mixture of crushed straw, organic fertilizer, plant growth regulator and soil, which can be specifically formulated by existing formula technology and will not be described in detail here.

[0229] In this embodiment, the water-retaining layer C-4 is composed of two layers of straw blankets C-4-1 and a breccia material layer C-4-2 sandwiched between the two layers of straw blankets.

[0230] In this way, the inner straw blanket can serve as a transition buffer between the angular gravel material and the vegetation layer, which is conducive to the growth of plants breaking through the water-retaining layer. The outer straw blanket can prevent the angular gravel from sliding off before being fixed by the vegetation growth. At the same time, it can introduce insects, birds and other creatures from the outside to stay or move in, and then bring in some native plant seeds to grow, which is conducive to ecological restoration. At the same time, the straw blanket can be used as a plant nutrient source after rotting for a period of time, so it is more conducive to the growth of plants on the slope and ecological restoration as a whole.

[0231] In this embodiment, the brecciated material layer is composed of brecciated-three-dimensional polymer fiber web, and the brecciated-three-dimensional polymer fiber web is specifically obtained by filling brecciated with a particle size of 0.5-2 cm into the three-dimensional polymer fiber web.

[0232] In this way, the construction is more convenient. When implemented, the thickness of the two layers of straw blanket is preferably about 2 cm, the thickness of the breccia material layer composed of the breccia-three-dimensional polymer fiber net in the middle is preferably about 4 cm, and the fiber net aperture is preferably 1-2.5 cm, which can better ensure the above effect.

[0233] In this embodiment, the vegetation layer C-3 is obtained by paving prefabricated vegetation layer blocks C-3', and the water-retaining layer C-4 is obtained by paving prefabricated water-retaining layer blocks C-4'.

[0234] In this way, both the vegetation layer and the water-retaining layer are produced in a standardized factory to form a block structure. During construction, it only needs to be simply stacked and fixed, which greatly improves the construction efficiency. The block structure preferably uses a rectangular block with a length × width = 74cm × 49cm. Specifically, the vegetation layer block can be made by adding vegetation materials (including clay, organic fertilizer, crushed straw and plant growth regulator) to plant seeds and a certain proportion of water, stirring and mixing evenly, and then putting it into a mold and applying a certain pressure to press it, relying on the cohesive force of the clay and the reinforcement effect of the crushed straw to form a vegetation layer block. The water-retaining layer block can be made by first laying two layers of woven straw blankets that meet the block size requirements and the angular gravel-three-dimensional polymer fiber mesh in the middle in order, and then tying them together to form a water-retaining layer block structure.

[0235] In this embodiment, see Fig.13 and Fig.14 A mesh pin C-5 is also provided, which consists of a pin C-5-2 and a pull net C-5-1 connecting each pin from the tail of the pin. The mesh pin passes through the vegetation layer blocks and the water conducting layer from the outside of the water retaining layer blocks and is inserted and fixed into the water retaining soil layer.

[0236] This is more conducive to efficient and rapid construction to obtain a structurally stable and reliable planting substrate structure.

[0237] In specific implementation, the mesh pins C-5 are preferably made of highly corrosion-resistant polymer material. During construction, the water-retaining layer blocks C-4′ and the vegetation layer blocks C-3′ can be fixed together in advance through the mesh pins C-5 to form a slope repair construction prefabricated component obtained by combining the vegetation layer and the water-retaining layer (see Fig.15 ). The length of the pin is preferably about 25cm, which is 9cm longer than the combined thickness of the vegetation layer C-3 and the water-retaining layer C-4. After being transported to the site, the combined layer with the net pin C-5 is manually fixed on the water-retaining soil layer C-1 through the pin C-5-2, thereby achieving the fixation of the vegetation layer C-3 and the water-retaining layer C-4 on the slope and forming a multi-layer water-retaining value-based substrate with strong water retention. It has the characteristics of being very convenient, fast and efficient in construction.

[0238] Therefore, the present application has the following outstanding beneficial effects: ① The top-anchored vegetation substrate fixing structure can realize that the laying height of the vegetation substrate on the steep rock slope is not limited by the slope gradient and height, and the laying thickness can remain unchanged along the entire slope height; ② The top-anchored vegetation substrate fixing structure can effectively support the slope surface of the steep rock slope and improve the stability of the slope surface; ③ The top-anchored vegetation substrate fixing structure can fix the vegetation substrate in a unitized manner, and the overall collapse and sliding disaster of the vegetation substrate will not occur, and there are fewer positioning rods on the slope surface, which effectively reduces the engineering volume and engineering cost; ④ The rainwater collection and irrigation system can realize the collection of rainfall on the top of the slope, automatic control of irrigation water volume, effective use of natural rainfall, and effectively reduce the cost of later cultivation; ⑤ The multi-layered water-retaining vegetation substrate can effectively retain water and enable the slope surface to achieve long-term and stable water supply; ⑥ The multi-layered water-retaining vegetation substrate can realize standardized production and construction, modular assembly, simple process, fast construction speed, safety and economy.

Claims

1. An automatic irrigation control device, comprising a water control chamber located below a water storage chamber, a vertically arranged water control tank bracket in the water control chamber, a water control tank hingedly arranged on the upper end of the water control tank bracket, a bottom portion of the water control tank having a greater specific gravity than the rest of the tank and a hinge point located at the middle rear position, so that when the water control tank is empty, the center of gravity is located at the rear position of the hinge point and when the water is filled to a certain proportion, the center of gravity can move forward beyond the hinge point position, when the water control tank is empty, the box opening is upward and arranged directly opposite to the water outlet of the water storage chamber, and when the box opening of the water control tank is tilted downward, the box opening is directly opposite to the main stream pipe inlet of the irrigation pipe network; A water pipe is arranged in the water storage chamber, and the lower end of the water pipe passes downward through the water storage chamber in a sealed manner and extends to the top of the water control tank opening; It is characterized in that The water pipe is a hose and its length exceeds the height of the inner cavity of the water storage chamber. The upper end of the water pipe is connected to a flow control float floating on the water surface. A limited flow hole is horizontally penetrated on the part of the flow control float immersed under the water surface. A vent hole is also vertically penetrated on the flow control float. The vent hole and the flow limit hole are cross-connected. The lower end of the vent hole is sealed and connected with the upper end of the water pipe. The diameter of the vent hole is more than 4 times the diameter of the flow limiting hole; the lower part of the flow controlling float is a solid float entity, the upper part is a hollow float cavity, the limiting hole is located on the float entity, and the vent hole and the float cavity are isolated and sealed from each other.

2. The automatic irrigation control device according to claim 1, characterized in that: The plane where the box opening of the water control tank is located is inclined, and when the tank is empty, the plane where the box opening is located faces upward.

3. The automatic irrigation control device according to claim 2, characterized in that: The water control tank includes an external adjustment frame and a box body installed in the adjustment frame. The adjustment frame is groove-shaped as a whole and is hinged to the upper end of the water control tank bracket. Adjustment fixing screws are horizontally penetrated on both sides of the adjustment frame. The adjustment fixing bolts are rotatably screwed on the adjustment frame and the inner ends are abutted against the box body to fix the box body. A counterweight block is inserted at the bottom of the groove of the adjustment frame.

4. The automatic irrigation control device according to claim 1, characterized in that: The upper end of the flow control float is also provided with a counterweight material inlet which is communicated with the float cavity.

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