57 results about "Catchwater" patented technology

A leaching and desalinating system for sandy soil in estuarine land reclaimed by sand blowing before planting greenery is provided. The leaching and desalinating system comprises a water pump and pipe assembly, a freshwater storage tank and a main diverting and draining channel. The water pump and pipe assembly lifts freshwater from a river to the freshwater storage tank through a water delivery pipe, multiple infiltration parts in which greenery is planted are provided on the waterside slope, the infiltration parts are connected to each other via multiple drainage infiltration channels. The present disclosure can quickly desalinate the sandy soil in land reclaimed by sand blowing at a low cost, improve the physicochemical properties of the soil, and provide a basic guarantee for the subsequent greenery planting on the sandy soil in land reclaimed by sand blowing.

The invention relates to the technical field of saline-alkali soil improvement, in particular to an improvement method suitable for moderate-severe saline-alkali soil, a cubic pit is dug in a moderate-severe saline-alkali soil block, the depth of the pit is 80-100 cm, dug shade soil and dug sunny soil are stacked separately, and drainage channels are dug in the two opposite sides of the pit; paving the bottom film on the pit bottom; concealed pipes are laid on the bottom film in sequence, round through holes are formed in the concealed pipes and covered with gauze elements, and the two ends of the concealed pipes extend into the drainage channels; uniformly paving a first layer of filter material around the concealed pipes, backfilling the concealed pipes with negative soil, spreading a second layer of filter material when the negative soil is backfilled to 25-30cm away from the ground surface, and then backfilling the negative soil to form a to-be-improved land parcel; and carrying out fresh water flood irrigation on the to-be-improved land parcel, and detecting that the soil salt content is in a range of 0.05-0.15% to obtain an improved land parcel. Along with natural rainfall and artificial irrigation in the later period, the salt content of the soil can be further reduced, and the crop yield is effectively increased on the premise that the field management method is not changed.

The utility model relates to a drainage structure, in particular to a side slope drainage ditch structure which comprises an intercepting ditch and / or a side ditch arranged on a side slope, a self-dredging mechanism is arranged on one side in the intercepting ditch and / or the side ditch and comprises a water storage pool, a mud blocking wall is arranged on the top of the side wall of the side, facing the upstream side of the side slope, of the water storage pool, and the mud blocking wall is arranged on the side wall of the water storage pool. A hole is formed in the mud retaining wall, and a filtering device is arranged on the hole; a movable flashboard is arranged on the side wall of the side, facing the catchwater and / or the side ditch, of the reservoir, a floating ball is arranged in the reservoir, one end of a traction rope is connected with the floating ball, and the other end of the traction rope is connected with the movable flashboard through a pulley block. The anti-seepage drainage device is simple in structure, good in adaptability, good in anti-seepage drainage effect and low in maintenance cost, and has a self-dredging function.

The utility model relates to the technical field of rainwater collecting equipment, in particular to a landscape rainwater collecting and recycling system which comprises a landscape vegetation planting field, a drainage channel is formed in the surface of the landscape vegetation planting field, a plurality of rainwater collecting assemblies are arranged on the drainage channel, and every two adjacent rainwater collecting assemblies are attached to each other. The rainwater collecting assembly comprises a first filter box, strip-shaped water inlets are formed in the two sides of the first filter box, a first filter screen is arranged at the bottom of the first filter box, the drainage channel is connected with a plurality of first water guide pipes, the first water guide pipes are jointly connected with a water collecting pipe, and a second water guide pipe is arranged on the water collecting pipe. The output end of the second water guide pipe is connected with a filtering assembly, and a water storage tank is arranged at the bottom of the filtering assembly. According to the landscape rainwater collecting and recycling system, the first filtering box and the second filtering box are both of detachable design and can be conveniently taken out and cleaned by workers, meanwhile, the first filtering box is convenient to take out due to the height design and the structure, and therefore filtering objects in the first filtering box can be conveniently cleaned.

The present invention relates to the technical field of slope rainwater collection, and discloses a slope rainwater collection and irrigation system for landscaping projects, comprising a water collection end, a water storage tank, and an irrigation end. The water collection end comprises a water inlet assembly installed on the slope, the water inlet assembly being provided with a sediment filter, and a plurality of water inlet assemblies being connected to the water storage tank via a drainage channel. The irrigation end comprises a water pump, which is connected to the water storage tank via a water inlet pipe. A water spray pipe is connected to the water outlet of the water pump, the water spray pipe extends out of the slope, the water spray pipe is located at the upper end of the slope, and a water spray head is installed at the top of the water spray pipe. Rainwater in the present invention is an important source of water resources for hillside slopes and can replenish soil moisture and groundwater resources. By collecting rainwater left on the hillside during the rainy season, the collected rainwater is used to irrigate vegetation on the hillside during the dry season, thereby ensuring that the vegetation on the hillside can obtain sufficient water during the dry season to ensure growth, while reducing the use of municipal water supply or groundwater.

The utility model provides a kind of water seepage and water storage integrated slope protection structure, including the slope protection body on foundation layer, reinforcing column is equipped between slope protection body and foundation layer;Slope protection body includes upper platform, lower platform, slope surface;Upper platform is equipped with water storage bin one, water storage bin one includes bin body, cover plate is equipped on bin body, water pump;Cover plate is equipped with sunshade cover by pin shaft and cover plate rotation connection, sunshade cover is connected with the inner wall of bin body with reset spring;Bin body side wall upper end is equipped with overflow hole;Lower platform is equipped with water storage bin two with same structure with water storage bin one;Slope surface is equipped with drainage channel, multiple planting grooves and water supply pipeline for planting groove water supply;Drainage channel exports water from slope protection body;Planting groove is equipped with water-permeable hole, water-permeable hole and overflow hole are all communicated with drainage channel;Water supply pipeline is connected with water pump.The slope protection structure of the utility model has the functions of effective drainage and rainwater collection and reuse, and has good slope protection performance and ecological benefits.

The utility model provides a mountainous area road drainage structure which comprises an isolation belt, two road main bodies, a plurality of grid plates and two first collecting frames, the two road main bodies are oppositely arranged on the two sides of the isolation belt, and two-way driving can be carried out. The diversion gradient of the road body inclines downwards from the edge to the isolation belt, in rainy days, rainwater can flow to the grid plate along the diversion gradient, then leaks downwards to the road drainage channel through the grid plate and finally flows to a mountainous area drainage system along the road drainage channel, and therefore it is guaranteed that the rainwater on the road can be drained smoothly, and water accumulation on the road surface is avoided. When garbage such as deadwood, fallen leaves and fallen flowers which cannot leak from the grid plate exists, rainwater can wash the garbage staying above the grid plate to the garbage collecting channel, the garbage can flow into the first collecting frame on the downstream side along with the rainwater in the garbage collecting channel, the garbage on the road section is collected together through the first collecting frame, and therefore the garbage on the road section is collected. And the garbage is prevented from staying above the grid plate to influence smooth drainage.

The utility model relates to the technical field of catchwater construction, in particular to a platform catchwater slip-form construction device which comprises a U-shaped mold, a sliding block, a sliding block and a sliding block. The coiling machine is arranged at the upper part of the intercepting ditch, the coiling machine is arranged far away from the U-shaped mold, and a pull rope of the coiling machine is connected with one end of the U-shaped mold; the movable support comprises a supporting part and a movable part, the supporting part is hinged to the movable part, the coil winder is arranged on the surface of the movable part, and walking wheels are arranged on the face, away from the coil winder, of the movable part; by means of the structural design, the construction efficiency of the intercepting ditch can be improved, and the labor intensity of workers can be reduced.

The ecological river embankment structure of the water conservancy project comprises a sludge filling layer and a normal soil embedding layer, the normal soil embedding layer wraps the outer side of the sludge filling layer, slope protection parts are arranged on the two sides of the normal soil embedding layer, a roadbed is arranged on the top of the normal soil embedding layer, and a slope protection layer is arranged on the bottom of the normal soil embedding layer. Longitudinal drainage channels distributed at equal intervals are arranged on the slope protection body in the longitudinal direction, transverse drainage channels distributed at equal intervals are arranged on the slope protection body in the transverse direction, and cement planting grooves distributed at equal intervals are formed between the longitudinal drainage channels and the transverse drainage channels. According to the utility model, the river channel sludge is filled in normal soil, so that the sludge can be conveniently reused, the sludge can be used as a base fertilizer for the growth of slope protection plants and can fix the soil through the rhizomes of the slope protection plants, and the slope protection main body is made of concrete and can prevent rainwater from impacting the river bank soil, thereby reducing water and soil loss; drainage of the roadbed drainage holes is directly aligned with the longitudinal drainage grooves, so that direct drainage is achieved, rainwater is prevented from eroding soil, and the river levee ecological environment is protected.

A metal roof is commonly used as a roof due to the fact that the surface of the metal roof is made of a complete metal plate and has few gaps, but due to the fact that the top face of an outer wall is uneven, gaps exist between the top face of the outer wall and the bottom face of the metal roof, and at the moment, part of rainwater moves inwards along the bottom of the roof face and flows backwards into a house through the gaps at the connecting position. The anti-leakage roof cornice edge sealing structure comprises a fixed beam, the fixed beam is fixed to the outer side of the top of an outer wall, a top plate is obliquely and upwards installed at the upper end of the fixed beam from outside to inside, waterproof cloth is installed on the lower side of the top plate in an attached mode, and the outer end of the waterproof cloth extends downwards to wrap the outer side face of the fixed beam. Rainwater is prevented from moving to the gap along the cross beam; the inner wall of the inner side of the drainage channel is connected with the lower side of the top plate through a drainage plate, rainwater moving on the bottom face of the top plate is guided downwards, and direct washing of the rainwater to the outer wall is reduced.

The multi-stage blocking structure comprises a slope body located beside the river channel, a drainage channel is formed in the top of the slope body, and a plurality of drainage covers which are evenly arranged are arranged at the top of the drainage channel. Through a multi-stage filtering structure of the drainage cover, the filtering box, the folding filtering membrane, the filtering plate and the purifying plate, and by matching with a protective grating of a drainage opening, stepped interception and purification from large-volume garbage to tiny silt and organic matters are realized: firstly, large garbage such as branches and plastic bags is intercepted by a clamping plate filtering opening, and then medium impurities are filtered out by filtering holes of the filtering box; sediment is subsequently filtered through the folded filter membrane and the filter plate, finally peculiar smell and organic matter are adsorbed through the purification plate, and compared with an existing single filter structure, the filter precision is higher, the adaptive scene is wider, and pollutants entering a river channel can be effectively reduced.

The filtering device comprises a rain grate base installed at a drainage channel opening and a rain grate plate hinged to the rain grate base, the rain grate plate is provided with a water leakage area, and a drainage through hole penetrating through the upper surface and the lower surface is formed in the water leakage area; the filtering bracket is mounted at the bottom of the drainage channel; the filtering basket is mounted at the top of the filtering bracket; the elastic component is mounted at the top of the filtering bracket and drives the filtering basket to be always propped against the bottom surface of the rain grate plate; the filter basket is provided with an arrangement groove for the elastic assembly to abut against; the elastic assembly comprises a first supporting base installed on the top of the filtering support, a second supporting base arranged in the arrangement groove, and a supporting spring connected with the first supporting base and the second supporting base, wherein the top of the second supporting base abuts against the top face of the arrangement groove. The device has the effect that impurities on the filter screen can be cleaned easily and conveniently.

The utility model discloses a water collecting and draining device for a building construction deep foundation pit, and relates to the technical field of building construction, the water collecting and draining device comprises a foundation pit main body, a filtering assembly and a water pumping pipe, a drainage channel and a water collecting groove are arranged in the foundation pit main body, the drainage channel is communicated with the water collecting groove, and the filtering assembly comprises a square fence and a filtering box. The square fence and the filter box can effectively reduce sludge in the water pumping pipe, a limiting assembly is arranged between the square fence and the filter box and comprises a limiting rod, the limiting rod can limit the square fence and the filter box, one end of the water pumping pipe penetrates through the filter box, the other end of the water pumping pipe is fixedly connected with a water pump, and a drainage assembly is arranged at one end of the water pump. The drainage assembly comprises a sand storage box and a baffle; the limiting rod penetrates through the limiting hole and the butt joint hole and is pushed, so that the limiting rod is gradually inserted into the soil, the fixing effect of the structure is improved, the time of influencing drainage due to structural collapse is shortened, and then the drainage efficiency is improved.

A sewage treatment tail water constructed wetland system for enhanced denitrification comprises a plurality of unit wetlands, each unit wetland is composed of water inlet ditches on the two sides, a horizontal subsurface flow type wetland in the middle, a vertical subsurface flow type wetland on the lower portion and a drainage channel on the drainage side, and water permeable pore plates are arranged between the horizontal subsurface flow type wetlands and the water inlet ditches. The vertical subsurface flow type wetland comprises a water collecting ditch and a water collecting pipe and is communicated with the drainage channel through a drainage well, the horizontal subsurface flow type wetland comprises aeration areas which are symmetrically arranged by taking the water collecting ditch as the center, micropore aeration pipes and bottom gravels are arranged in the aeration areas, upper gravels and surface soil are laid on the top surfaces, and aquatic plants are planted; according to the structure, nitrification and denitrification reaction zones are strengthened, the denitrification efficiency is improved, wetland surface soil prevents a water body from making contact with the atmosphere, heat preservation is conducted in winter, the microbial activity is kept through bottom aeration, the total nitrogen removal rate in winter is increased, the sewage treatment efficiency and the running stability in winter are effectively improved, and the system has remarkable environmental protection and economic benefits.

The invention belongs to the technical field of tunnel construction, and particularly relates to a busy trunk railway double-track tunnel portal disaster prevention and reduction structure and a construction method thereof. A mountain is arranged at the top of the base layer, tunnel portal bodies are formed in the two ends of the mountain in a communicating mode, arched plates are arranged at the two ends of the tunnel portal bodies, and cement piers are poured at the two ends of the tunnel portal bodies of the mountain to form a supporting structure used for bearing the arched plates and an anti-interference assembly. The joint of the arched plate and the tunnel portal is used for guiding muddy water on the surface of the mountain due to rain wash, the muddy water flows to the drainage channel through the water guide plates on the two sides, laying of the protective net is facilitated through construction of the platform assembly, then the protective net is used for limiting gravel of the mountain in the rain wash process, and the service life of the mountain is prolonged. And the two groups of anti-interference assemblies are arranged at the positions of the tunnel portal port and are used for weakening the impact force of the railway double-track train running at a high speed.

The invention discloses a sustainable natural ditch fixing and tableland protecting project management method and system, and the method comprises the steps: carrying out the hydrological analysis of a loess tableland surface to be protected, determining the natural water flow path of the loess tableland surface, and installing a runoff monitoring device at the outlet of each natural water flow path; the step drainage channels are designed according to different land utilization modes and natural water flow paths, and rainwater in the water collection area is intercepted through the step drainage channels and discharged in a unified mode. The development change condition of the water and soil erosion process under the ditch fixing and tableland protecting engineering measures is simulated through the model, the treatment measures are adjusted in time, the control group is set, and the model of the control group simulates the condition that no engineering measure is adopted in the natural state. Designing size parameters of the model according to an equal-proportion scaling method, and calculating a tableland surface area and channel parameters; a stepped reservoir or an underground reservoir is arranged according to different land utilization modes and natural water flow paths, water is stored, larger runoff is prevented from being formed, and scouring to the loess tableland surface is reduced.

The invention belongs to the technical field of municipal water conservancy, and particularly relates to a quick pressure relief and pollution discharge device for municipal water conservancy, which comprises a valve body inner cavity, a movable cavity, a pressure relief device and a pressure relief device, the movable cavities are fixed to the left side and the right side of the top of the inner cavity of the valve body, lifting rods are movably installed in the movable cavities, elastic pieces are fixed between the tops of the lifting rods and the tops of the movable cavities, floating plates are fixed to the lower ends of the lifting rods, and the center of the bottom of each floating plate is further fixedly connected with the upper end of a lifting rod. The partition plate lifting paste is designed to drive the sealing plate to move upwards through the rotating rod, so that the communication position of the middle net barrel and the flood discharge opening is not sealed any more, accumulated water collected in the valve body can be guided into the flood discharge opening to be rapidly decompressed and released into an emergency flood discharge pipeline, and the accumulated water can impact turbine blades through the flood discharge opening to make the turbine blades rotate.

The roadbed drainage structure for municipal road construction comprises a drainage channel, a connecting frame, a water inlet, a clamping groove and a filter screen, the top of the filter screen is fixedly provided with a drag hook, the inner wall of the drag hook is movably connected with a connecting ring, and the left side and the right side of the top of the connecting frame are both fixedly connected with winding mechanisms. And the left side of the connecting frame is fixedly connected with a positioning mechanism. By arranging the drag hook and the connecting ring, the drag hook and the filter screen can be driven to move upwards by pulling the connecting ring, so that the drag hook and the filter screen are separated from the interior of the clamping groove, and the problem that impurities in sewage are easily attached or wound on the surfaces of the bracket A and the bracket B when the sewage enters the connecting frame due to the fact that the bracket A and the bracket B are located in the connecting frame is solved. The problems that a user can not conveniently press the protruding blocks at the same time, and actual use is troublesome are solved, and the effect that the filter screen is convenient to disassemble is achieved.

The utility model discloses a black tea breeding planting slope surface structure, which relates to the technical field of slope surface structures, and comprises a slope surface, the slope surface is an inclined slope surface structure, the upper end of the slope surface is provided with an upper drainage channel, the slope surface is provided with a plurality of planting earth mounds, the planting earth mounds are uniformly distributed on the slope surface, and each plurality of planting earth mounds form a group. A second drainage channel is arranged between each group of planting earth mounds, and the second drainage channels are arranged on the upper end surface of the slope surface; the drainage device has the advantages that the first drainage groove and the second drainage groove are used for draining water in the rainy season, and when rainwater is large, the first drainage groove and the second drainage groove drain water at the same time; when the rainwater is small, the water is drained only through the first drainage groove; moisture in the first drainage groove is transferred to the water storage foam through the transfer mechanism and stored, then moisture is provided for the root hairs of the tea trees through the water storage foam, and the situation that the quality of the tea trees and tea leaves is affected by too little moisture at the root hairs of the tea trees in the dry season can be avoided.

The application discloses a sustainable natural gully-fixing and loess tableland-protecting engineering management method and system, and the method comprises the following steps: performing hydrological analysis on a loess tableland surface to be protected, determining a natural water flow path of the loess tableland surface, and installing a runoff monitoring device at the outlet of each natural water flow path; according to different land use modes and the natural water flow path, a stepped drainage channel is designed, rainwater in a catchment area is intercepted through the stepped drainage channel, and is uniformly discharged. The development and change of the water and soil erosion process under the gully-fixing and loess tableland-protecting engineering measures are simulated through a model, the treatment measures are timely adjusted, and a control group is set; the model of the control group simulates a situation that no engineering measures are adopted under a natural state, size parameters of the model are designed according to a proportional scaling method, the size parameters are used to calculate a tableland surface area and a gully parameter; according to different land use modes and the natural water flow path, stepped water storage pools or underground reservoirs are set, water is stored, and formation of larger runoff is prevented, so that the erosion of the loess tableland surface is reduced.

The utility model provides a device for reducing filter material loss for a filter tank, which comprises a sand intercepting groove and a fixing device, the sand intercepting groove is wide in top and narrow in bottom and is in a funnel-like shape, and a sand discharge hole is reserved at the bottom of the sand intercepting groove; and the sand intercepting groove is arranged on the side wall of the H-shaped drainage channel of the filter tank, which is close to one side of a filter material, through the fixing device. According to the device for reducing filter material loss for the filter tank, the sand intercepting groove is low in manufacturing cost, simple in structure and convenient to install, can be directly fixed on a drainage channel by adopting bolts, and does not influence the existing structure of the filter tank and the backwashing effect.

The utility model discloses an economical water accumulation prevention landscape ecological protection slope, and belongs to the field of ecological protection slopes. Comprising a slope protection body and a first drainage channel arranged at the top end of the slope protection body. Rigid baffles are fixed to the side wall of the slope protection body at equal intervals, a second drainage channel communicating with the first drainage channel is installed on the side wall of the slope protection body, water guide channels communicating with the second drainage channel are fixed to the side walls of the rigid baffles, and a plurality of permeation holes are formed in the bottom ends of the side walls of the rigid baffles. A drainage groove is formed in the top end of the rigid baffle, accumulated water flows into the water guide channel along the drainage groove, the baffle in the mounting groove blocks soil, the accumulated water of the inclined part of the slope protection body is conveniently discharged, and the conditions of accumulated water on the surface of the slope protection body and landslide are greatly reduced. The economic water accumulation prevention landscape ecological protection slope has the beneficial effect that the water accumulation drainage efficiency is high.

The sewage soil filtering system comprises an organic ecological garden, a water taking detection opening is formed in one side of the bottom end of the organic ecological garden, and a first drainage channel, a second drainage channel and a third drainage channel are sequentially formed in the other side of the bottom end of the organic ecological garden from left to right; according to the system, sewage is converted into an organic fertilizer pressure forced drainage pipe network, the organic ecological gardens and crops are irrigated in stages and at regular time, and the high yield, stable yield and efficient ecological industry chain of the crops is improved; a permeable layer is laid on the upper layer of a cement pipeline, a gravel permeable layer is laid on the lower layer of the cement pipeline, gaps are blocked by breathable geotechnical cloth, monitoring water intakes are arranged at intervals, main water plates are arranged in the monitoring water intakes, the water intakes are put in after the beginning of spring and taken out after the beginning of summer, and the underground water level is increased according to actual requirements.

The present application provides a kind of ecological purification method for treating aquaculture tail water, and is sequentially provided with multifunctional drainage ditch, ecological oxidation dam, stable sedimentation pond, continuous biological filter pond and composite purification bed along the direction of aquaculture tail water flow.The garbage intercepting device, ecological revetment and buffer zone are arranged in the multifunctional drainage ditch;The ecological weir, ecological frame, fixed pile, water collecting wall and lifting pump are arranged in the ecological purification dam;The floating plant area, multiple interception and purification devices and aeration device are arranged in the stable sedimentation pond;The culture area is arranged in the continuous biological filter pond, and after the water flow passes through multiple aeration biological filter areas, it enters the effluent area uniformly;The composite purification bed includes plants, improved substrate layer, purification layer, filtration and water collection layer, impermeable layer and effluent area.The method can effectively remove the refractory pollutants and toxic and harmful substances in aquaculture tail water, has low construction cost, small land area, low operation and maintenance cost, and the effluent can be resource utilization.

This invention relates to a road drainage structure based on sponge city design, including drainage equipment excavated on both sides of the road and water storage equipment connected to the drainage equipment. The drainage equipment includes a ditch cover, a drainage ditch, a first filter device, a second filter device, and a drainage tank. The drainage ditch is located under the road, with a ditch cover at the top and a first filter device below the ditch cover. A second filter device is located at the bottom of the drainage ditch, and a drainage tank is located below the drainage ditch. In this invention, the two filter tanks are inclined downwards at their closest points, creating a certain height difference between the first infiltration hole and the first filter screen, accelerating the flow of rainwater and preventing the first infiltration hole from becoming clogged. At the same time, a second infiltration hole is provided at the lowest point of the first and second rings to prevent rainwater from accumulating in the filter tank when the cover is closed, thus preventing the generation of mosquitoes.

The utility model provides a micro-irrigation assembly type garden road which comprises a concrete box body and a reinforced concrete slab, the reinforced concrete slab is arranged on the concrete box body in a covering mode, a plurality of grooves are formed in the top end of the concrete box body, tenons matched with the grooves are arranged on one side of the reinforced concrete slab to be clamped, and the tenons are arranged on the other side of the reinforced concrete slab. Two opposite retaining walls arranged at intervals are arranged in the middle of the interior of the concrete box body to form a drainage ditch, and the retaining walls are lower than a cavity of the concrete box body. According to the scheme, rainwater is collected and guided into the reinforced concrete box type water storage tank on the lower portion, the drainage channel is arranged in the middle of the structure, and when the stored rainwater exceeds the preset capacity, the rainwater can overflow the retaining wall of the drainage channel and flow out of the drainage channel; rainwater stored in the reinforced concrete box type water storage tank slowly permeates into soil on the two sides of the road through micro-permeation rubber on the two sides of the lower structure, and plants on the two sides of the road are irrigated.

The application discloses a kind of retaining wall type slope photovoltaic field area's drainage solid soil system, it is related to photovoltaic field area drainage structure technical field, including slope photovoltaic field area, the side of slope photovoltaic field area lower topography is provided with drainage channel, the surface of slope photovoltaic field area is provided with transverse main water retaining wall and longitudinal secondary water retaining wall, main water retaining wall and secondary water retaining wall are longitudinal and transverse staggered grid, secondary water retaining wall is close to the end of main water retaining wall and is reserved overflow gap, main water retaining wall and secondary water retaining wall are provided with sand retaining wall at overflow gap, sand retaining wall is connected into whole by main water retaining wall and secondary water retaining wall in the ground, the surface of slope photovoltaic field area is located between grid-shaped main water retaining wall and secondary water retaining wall and is provided with solid soil grid.This application is separated by water retaining wall system and guides surface runoff, makes full use of site natural overflow and underground seepage capacity, to reduce the effect of field area water and soil loss and reduce drainage system cost.

The invention discloses a comprehensive utilization and treatment method for tailing resources based on plant growth, which comprises the following steps: S1, analyzing the properties of tailings, and carrying out physicochemical property analysis including pH value measurement, heavy metal content detection, organic matter content detection, tailing particle size analysis and water content detection; s2, tailing foundation treatment: planning an experimental field, performing necessary flattening treatment on the surface of the experimental field, designing a gentle slope on the surface of the experimental field, constructing a three-dimensional drainage channel network in the gentle slope, and reinforcing the side slope of the experimental field; and S3, stability treatment of the tailings is conducted, specifically, the tailings are rolled or tamped, and a curing agent is added. According to the innovative method for planting the plants in the soil near the iron ore, the properties of the tailings are comprehensively utilized, the tailings are subjected to basic and stable treatment, diffusion of heavy metal and harmful substances in the tailings to the surrounding soil, water and atmosphere can be effectively reduced, the environmental pollution risk is reduced, practicability is achieved, development of tailings resources is achieved, and economic benefits are generated.

The utility model relates to the technical field of farmland irrigation, in particular to a purification device for farmland irrigation drainage. The multiple collecting and filtering mechanisms are all arranged in the drainage channel, each collecting and filtering mechanism comprises a collecting tank and two clamping grooves, the collecting tanks are placed in the drainage channel, the two clamping grooves are both formed in the drainage channel, the collecting tanks are provided with filter screens, and through cooperation of the collecting tanks, the filter screens and the like, water can be conveniently filtered; according to the device, a plurality of baffles are arranged, so that gravel, garbage and the like in water can be conveniently blocked by the multiple baffles, the gravel is precipitated, the gravel and the garbage are collected, through cooperation of a clamping block, a spring, a pull rope, a lifting handle and the like, the collecting tank is conveniently limited and fixed, the stability of the collecting tank is guaranteed, meanwhile, the collecting tank is conveniently mounted and dismounted, operation is easy and fast, and the device is convenient to use. And the filter screen, the collecting tank, gravel garbage and the like can be directly taken out conveniently, people can treat the garbage conveniently, and practicability is improved.