3210 results about "Ditch" patented technology

The invention relates to the technical field of agricultural machinery, and discloses a straw returning strip rotary tillage, ridging and pressing device which comprises a lightweight connecting frame serving as an installation foundation of the device and integrally designed to be hollowed out; the laser radar is embedded in the front end of the lightweight connecting frame and is used for scanning the advancing direction and providing topographic data; according to the device, straw returning, rotary tillage, ditching, sowing and pressing are completed at a time, integrated operation is achieved, the time consumed by multiple times of land entering operation of a traditional agricultural machine is shortened, the efficiency is improved by 30%-40%, and through laser radar terrain scanning and sensor feedback, the working efficiency is improved by 30%-40%. The rotary tillage depth, the ditching depth and the pressing pressure are automatically adjusted, the manual intervention time is shortened, terrain self-adaption is achieved, and the device has the advantages of being high in practicability and capable of achieving terrain self-adaption.

The invention provides a power grid water and soil conservation method and system based on three-dimensional simulation, and relates to the technical field of power grid water and soil, and the method comprises the steps: building a power grid project three-dimensional scene model based on terrain, soil, vegetation and hydro meteorological data, and simulating water and soil loss risk distribution. Then, a water and soil conservation facility layout scheme including intercepting and draining ditches, a grit chamber, a vegetation recovery zone, a retaining wall and the like is established; a multi-objective optimization algorithm is adopted, the minimum construction cost and the optimal water and soil conservation effect are taken as objectives, the position, specification and number of facilities are optimized, and a plurality of candidate schemes are obtained. And finally, simulating water and soil loss processes under different rainfall working conditions based on computational fluid mechanics, selecting a scheme with the highest comprehensive score as a final optimization scheme in combination with a fuzzy comprehensive evaluation method, and outputting a three-dimensional construction layout diagram and a technical parameter list. The water and soil loss risk in power grid engineering construction and operation can be effectively reduced, the engineering cost is saved, and the water and soil conservation effect is improved.

The invention relates to the technical field of ecological restoration, in particular to a mine waste dump ecological restoration method which comprises the following steps: dividing a waste dump into planting areas, installing detection equipment in each planting area, and monitoring various indexes of soil and environment in real time; a soil conditioner is customized and produced according to soil physicochemical property analysis; arranging an irrigation system for each planting area, and planting grass seeds and shrubs according to climate and soil conditions; strip-shaped ditches are dug between the adjacent planting areas, and prefabricated buried ecological restoration modules are arranged in the strip-shaped ditches to form planting grooves. By implementing the ecological restoration scheme, the physical and chemical properties of the soil are remarkably improved, the heavy metal content is remarkably reduced and is lower than the national soil environment quality standard limit value, and soil pollution is effectively eliminated. In addition, the proportion of soil aggregate structures is increased from 15% to 30%, the water retention capacity of the soil is remarkably improved, and more suitable environmental conditions are provided for vegetation growth.

The invention relates to the technical field of earthwork compaction, and discloses a pipe ditch backfilling and tamping system based on excavator modification. The system comprises an earthwork condition dynamic sensing module which captures a bucket tooth track, a hydraulic oil cylinder pressure pulse and a soil mass vibration spectrum in real time and combines a historical database to construct a model to output a theoretical compaction degree curve; a multi-source compaction difference analysis module performs three-dimensional deviation detection on the theoretical curve and the actual settlement volume data to generate a construction grid-level compaction difference tensor; the defect area association mapping module inputs the tensor into a geological topology analysis network, generates a loose defect propagation path probability cloud chart by combining soil parameters and identifies weak sections; and the tamping strategy self-adaptive configuration module automatically sets operation parameters according to the cloud picture, activates high-precision monitoring on a high-probability defect section, and applies a dynamic excitation force test on adjacent grids, so that intelligent management and control of the backfilling and compacting process are realized.

The invention belongs to the technical field of rock-soil side slope protection, and particularly relates to an expansive soil side slope flexible ecological comprehensive supporting system which comprises an intercepting ditch, a vegetation protection layer, a composite waterproof layer, flexible anchor rods, water seepage and drainage pipes, cultivation and planting soil, a drainage ditch, a backfill soil layer, a step-shaped slope surface, a slope surface and slope protection vegetation. The slope surface is excavated into a step-shaped slope surface, a composite waterproof layer, expansive soil backfill soil, a vegetation protection layer and cultivation and planting soil are sequentially arranged on the step-shaped slope surface from bottom to top, and slope protection vegetation is planted and formed on the cultivation and planting soil; the composite waterproof layer is fixed to the step-shaped slope face through the flexible anchor rods. The vegetation protection layer and the slope protection vegetation together reinforce the shallow soil body, and the composite waterproof layer and the flexible anchor rod play a role in absorbing and relieving the received expansive force. The method has an ecological greening effect, has the functions of common supporting of the shallow surface layer and the deep layer of the expansive soil slope, flexible reinforcement and expansion reduction and allowable generation of a small amount of deformation, is simple in construction and high in efficiency, and can realize long-term stability of the shallow surface layer and the deep layer of the expansive soil slope.

The invention relates to the technical field of pollution analysis, in particular to a construction method and device of an agricultural watershed non-point source pollution decision support system.The construction method of the agricultural watershed non-point source pollution decision support system comprises the steps that firstly, the nitrogen and phosphorus loss amount of each pollution source is calculated; acquiring digital elevation data; determining an intermediate water body between each pollution source and the target water body according to the digital elevation data, and obtaining a migration path corresponding to each pollution source; when the absorption amount of each migration path is determined, the water body type is considered, and the influence of the difference between the hydraulic characteristics and the physicochemical properties of the water body on the absorption amount can be reflected through the water body type, so that the calculated absorption amount of each migration path is more accurate; furthermore, the target water body considers the complex communication relation and topological relation among the ditch, the pond, the reservoir and the river, and the simulated water body load capacity is more accurate.

The utility model provides an intercepting and purifying device suitable for river-entering farmland ditches, which comprises an intercepting structure and a purifying structure, the intercepting structure comprises a sludge deposition and grit chamber and a steel grating, a denitrification device containing denitrifying phosphorus-accumulating bacteria and adsorptive mineral materials is placed in the sludge deposition and grit chamber, and the steel grating is arranged in the sludge deposition and grit chamber. A sand setting inlet and a sand setting outlet are formed in the two opposite sides of the steel grating respectively, the steel grating is arranged at the sand setting outlet, and the sand setting inlet is used for being communicated with an ecological ditch; the purification structure comprises an ecological purification pond and a gabion packing bed, the ecological purification pond is provided with a purification inlet and a purification outlet, gabions are arranged at the purification inlet and the purification outlet, the ecological purification pond is tightly attached to the sludge deposition and grit chamber, the purification inlet is opposite to and communicated with the grit inlet, and the gabion packing bed is arranged in the sludge deposition and grit chamber. And the gabion packing bed is arranged in the ecological purification pond.

The invention discloses tunnel deeply-buried ditch construction equipment and method.The method comprises the following steps that S1, a self-propelled inverted arch trestle is moved to a construction section, a total station is adopted for lofting an excavation sideline of a deeply-buried ditch, and the sideline is marked; s2, driving tunneling equipment into an operation area, adjusting the center line of the tunneling equipment to be aligned with the designed center line of the ditch, meanwhile, lifting a slag removal conveying belt of a bridge approach machine to a specified height, enabling a transport vehicle to be in place, and enabling the equipment to run in a no-load manner; s3, a tunneling system of the tunneling equipment is started, and the tunneling equipment is driven by the control system to conduct tunneling operation according to a preset track; s4, muck in the muck collecting system is conveyed to a transport vehicle through a conveying belt to be transported outwards; and S5, after the ditch is excavated, a base is formed at the bottom, and meanwhile a temporary protection wall is installed. According to the device, the randomness of manual operation is avoided through mechanical operation, process control is more convenient, meanwhile, procedure connection gaps are reduced through continuous construction, and the problem that the exposure time of the inverted arch is too long is effectively solved.

The invention belongs to the technical field of side slope protection, and relates to a dry-hot valley area land consolidation side slope ditch corrosion plant protection structure and a dry-hot valley area land consolidation side slope ditch corrosion plant protection method. The slope surface is trimmed into the layered reverse slope steps, the layered reverse slope steps comprise the woody plant planting reverse slope steps and the herbaceous plant planting reverse slope steps, the equal-height horizontal ditches are formed in the woody plant planting reverse slope steps, herbaceous plants and arbors are combined to form the hedgerow, the water and soil conservation capacity can be improved, the slope and cultivated land can be protected, slope surface runoff and soil loss are reduced, and the slope surface is protected. The growth of the eroded channel is controlled, the soil quality is improved, the vegetation growth is promoted, the vegetation coverage of the side slope can be recovered in a short time, the ecological system of the side slope can be recovered, and the diversification of an agricultural ecological system is promoted; an intelligent and automatic irrigation system is utilized, time and labor are saved, water resources can be reasonably utilized, efficient utilization of the water resources and land is achieved, waste of the water resources is reduced, fruit and forage grass production is considered, and economic benefits are remarkably increased.

The invention discloses an airport high-fill soil rainfall seepage field analysis method and system. The method comprises the steps that first-level slope sections on the two sides of a branch ditch in a high-fill area are selected, and simplification assumption is conducted on an engineering structure of the first-level slope sections in combination with foundation investigation and design data; functional partition is carried out on the research area, and structured grid division is carried out on each functional partition through simulation software; based on an unsaturated soil water flow theory, selecting a mathematical model for describing a relationship between a soil water characteristic curve and a permeability coefficient, inputting physical and mechanical parameters of a filled soil body, setting boundary conditions of a seepage model, and completing construction of the seepage model; designing at least two typical rainfall working conditions; carrying out saturated-unsaturated seepage simulation, and recording dynamic change data of pore water pressure and a transient saturation region under different working conditions; and carrying out multi-dimensional quantitative analysis on a simulation result, and summarizing an association rule of rainfall parameters and a seepage field. And safe operation of airport engineering is ensured.

The invention discloses an irrigation area ditch drainage-farmland waterlogging simulation evaluation method. The method comprises the following steps: S1, obtaining meteorological and hydrological data, DEM data, drainage facility vector data and land utilization classification data of a target area; s2, generalizing a drainage system of the irrigation area, and generating nodes, drainage channels and sub catchment area. Shp files; s3, converting the. Shp file into an. Inp file, constructing a parameterized model, and performing parameter calibration and verification on the model; s4, simulating waterlogging conditions under different rainfall and channel siltation situations; s5, extracting overflow node data, and performing flood inundation analysis; and S6, generating a flood risk density map according to the overflow node data. The invention further discloses an irrigation area ditch drainage-farmland waterlogging simulation evaluation system. According to the irrigation area ditch drainage-farmland waterlogging simulation evaluation method and system disclosed by the invention, the problem that ditch drainage simulation and farmland waterlogging risk evaluation cannot be carried out under an irrigation area waterlogging disaster in the prior art is solved.

The invention relates to a water-rich silt layer deep foundation pit waterproof curtain leakage rapid plugging system and a construction method, through a foundation pit filler isolation water diversion pressure relief plugging technology, plugging is carried out through fillers such as cotton fibers, then water diversion pressure relief flow guiding is carried out through a flow guiding device, the flow guiding device is convenient to manufacture, construction steps are simple, and the construction cost is low. Quick plugging of leakage points is realized, and the construction efficiency is improved; by means of the section steel support flexible cable net water injection bag rapid back pressure technology, when water seepage occurs around the foundation pit, water is injected into the flexible cable net water injection bag through a water injection device, the bag expands to generate reverse pressure, the wall of the foundation pit is pressed, a leakage channel is rapidly blocked, water seepage is prevented, and construction safety is guaranteed. Meanwhile, the water injection rate and pressure are flexibly controlled through the water injection system, and the requirements of different foundation pit environments can be met; through the back pressure technology after the built-in gravel perforated drainage pipe blind ditch, the underground water level in the foundation pit is effectively controlled, and the foundation pit leakage phenomenon is reduced.

The invention discloses a field-ditch-pond extraction method based on unmanned aerial vehicle photogrammetry and deep learning, and belongs to the technical field of remote sensing technology and agricultural informationization, and the method comprises the steps: employing an unmanned aerial vehicle to carry a multispectral camera and an optical lens, and obtaining original image data through an oblique photogrammetry technology; preprocessing the obtained original image data to generate a multispectral image map (DOM) and a digital surface model (DSM); starting from the spectrum, terrain and texture features of a small watershed field-ditch-pond system, a U-net algorithm with a built-in attention mechanism, an image segmentation model supporting zero sample learning, a multi-scale segmentation technology and a multiple extraction framework of a shape feature extraction algorithm are constructed, image segmentation, classification and interpretation are carried out, and a multi-scale image segmentation model is constructed. Fine extraction of the small watershed field-ditch-pond system is realized; the design can improve the extraction precision and efficiency under complex terrains, and is suitable for current small watershed agricultural non-point source pollution migration trajectory simulation and farmland fine management.

The utility model discloses a drainage system with an intercepting and buffering mechanism. The intercepting plate is connected to the interior of the main frame, the baffles are arranged in the intercepting plate, the base rod is connected to the middle of the front end of the main frame, the transverse battens are connected to the inner side of the base rod and correspond to the baffles in a one-to-one mode, the linkage rods are detachably connected between the transverse battens and the baffles, and rectangular bases are arranged on the two horizontal sides of the main frame. And the fixing plate is connected in the rectangular seat in a retractable manner. A plurality of movable baffles are arranged on the intercepting plate, and the baffles can be overturned to different inclination angles in a rectangular through opening in the intercepting plate under the mutual cooperation of a push rod, a transverse strip plate and a linkage rod, so that the size of an overflow opening formed by the rectangular through opening in the intercepting plate is controlled, and the water flow intercepting and buffering effects are rapidly achieved; and the fixing plate and the rectangular seat arranged on the two sides of the main frame can be matched with each other to be quickly mounted at a proper closure position of the ditch.

The present invention relates to the technical field of rotary tillage and seeding equipment, and discloses a rotary seeding and ditch-opening integrated machine, which includes a first frame. One end of the first frame is connected to a second frame. A height-lifting mechanism for adjusting the height of the second frame is provided between the first frame and the second frame. A pressing roller group is arranged at the bottom of the second frame. In the present invention, the first pressing roller and the second pressing roller perform pressing operations before and after the disc ditch opener opens the ditch respectively, so that the top surface of the ridge formed by the notch disc cooperating with the digging bucket disc for ridge ditch opening is leveled, and the side wall of the ridge ditch is leveled in cooperation with the pressing disc, avoiding the ridge from falling apart during the process of opening the planting ditch. The first pressing roller presses and cooperates with the soil distributing mechanism to level the soil surface. During the subsequent process of opening the planting ditch, the soil on both sides of the disc ditch opener is compacted, and while not compacting the soil density of the soil acting with the disc ditch opener, the soil excavated from the planting ditch is reduced, the space between the disc ditch openers is increased, and soil congestion is avoided.

The invention provides a drainage arch culvert structure, and belongs to the technical field of building construction. The arch ring is located above the foundation and serves as a drainage channel of the arch culvert body; the platform body is arranged on the foundation, clings to the side walls on the two sides of the arch ring and serves as a lateral protection structure; and the protection arch is arranged at the top of the platform body, covers the arch ring side arch and serves as a side arch protection structure. The drainage arch culvert structure composed of the foundation, the arch ring, the platform body and the protective arch is arranged at the bottom of the slag yard, a traditional scheme that a drainage blind ditch is arranged at the bottom of the slag yard can be replaced, the overflow area is larger than that of the drainage blind ditch, the drainage capacity is higher than that of the drainage blind ditch, slag materials can be prevented from invading the structural limit of the drainage blind ditch in the filling process, and a drainage channel cannot be blocked; the drainage effect cannot be influenced.

The invention discloses an ecological management method for an eroded gully in a high and cold wet steppe area, which comprises the following steps: firstly, cleaning sundries in the eroded gully, and then performing slope cutting treatment on the gully bottom and gully slope of the eroded gully; pine piles or gabion protection feet are arranged at the bottom of a ditch slope of the erosion ditch; gabion check dams and / or raft pile dams are arranged in the extending direction of the channel of the erosion gully at intervals; vegetation is planted on a ditch slope of the erosion ditch, and an ecological intercepting ditch is formed in the top of the ditch slope; the comprehensive protection system is constructed through the measures of the channel stepped gabion check dam, the log raft piles, the channel slope stabilizing structure, the ecological revetment, soil protection, vegetation recovery and the like, extension and expansion of the erosion gabion are prevented, the stable state of the gabion bank is kept, ecological balance is promoted through vegetation recovery, the anti-scouring, stability and ecological function of the erosion gabion bank are enhanced, and the ecological protection effect of the erosion gabion bank is improved. The problems existing in the prior art are solved, and the purpose of long-term effective ecological treatment of the erosion gully is achieved.

The invention provides a special fertilizing device for bio-fertilizer, and belongs to the technical field of fertilizing equipment.The special fertilizing device for bio-fertilizer is provided with two parallel rotary tillage parts which can dig a fertilizing ditch along a set path, a fertilizer bin is used for pouring bacterial fertilizer into the dug fertilizing ditch, and a soil covering part backfills soil on the two sides of the fertilizing ditch to cover the bacterial fertilizer; the two rotary tillage components are coaxially arranged on a rotating shaft, the two rotary tillage components are respectively arranged in the two inclined slides, and the rotating shaft penetrates through the two slides along the width direction of the fertilization ditch; the soil covering part is located on the side, close to the edge of the fertilization ditch, of the second slide, the second slide can convey the soil turned and stirred by the second rotary tillage part to the side, the soil covering part comprises a scraping plate stretching across the fertilization ditch, and when the scraping plate moves forwards, the soil on the side, close to the edge of the fertilization ditch, of the second slide can be backfilled to the upper surface of the soil poured with bacterial manure. The biological fertilizer can be applied more reasonably, so that the fertilizer efficiency is greatly improved.

The utility model relates to the technical field of hydraulic engineering construction machinery, and discloses a canal trench ditching device, which comprises a chassis structure, a trench digging mechanism, a trench digging mechanism, a trench digging mechanism, a trench digging mechanism, a trench digging mechanism and a trench digging mechanism, wherein the chassis structure is used for realizing operation on soft and hard alternate soil layers or undulating surfaces; the rotary tillage structure is mounted at the bottom of the chassis structure and used for crushing hard soil on the surface layer and removing weeds and broken stones to form a uniform and loose plough layer; the ditching structure is mounted at the bottom of the chassis structure, is positioned behind the rotary tillage structure and is used for realizing excavation of grooves with different depths; and the tamping structure is installed at the bottom of the chassis structure and located behind the ditching structure, comprises a soil shifting shovel for leveling soil discharged from the two sides of the ditching structure, and tamps the bottom of the groove and the side slope through vibration compaction of a plane tamping plate and a slope tamping plate. By integrating the self-adaptive terrain adjusting system and the combined type grooving mechanism, topographic relief and soil states can be monitored in real time, the ditching depth, gradient and section form can be dynamically adjusted, and one-time forming of a groove is ensured.

The invention discloses an agricultural small-watershed integrated water and soil loss prevention and control method, which comprises the following steps of: performing source reduction in a slope cropland area with the gradient of more than 6 degrees to control a slope cropland erosion source so as to treat surface erosion and runoff expansion; process blocking and control are conducted from the middle upstream area to the middle downstream area, and sediment migration is blocked and the confluence speed is adjusted through linkage of the grading ditch system and the sedimentation and storage facility; tail end purification is carried out in a drainage basin outlet area, water quality is purified through ecological engineering measures, and a drainage basin outlet is stabilized; the technical problems that in the prior art, comprehensive prevention and control means starting from the whole drainage basin are lacked, traditional measures have obvious defects in the aspects of function coupling, space coordination and ecological restoration capacity, and the dual requirements of current agricultural green development and ecological environment protection are difficult to meet are solved.

The utility model belongs to the technical field of agricultural irrigation equipment, and particularly relates to a water-saving irrigation vehicle. Comprising a vehicle body, a water tank and a ditching assembly, the top of the ditching assembly is connected with the vehicle body, the bottom of the ditching assembly is inserted into a ridge to be irrigated, and a ditch for irrigation is formed in the ridge to be irrigated in the advancing process of the vehicle body; the water tank is fixed to the vehicle body, and water in the water tank is guided into a trench through a water guiding assembly. The irrigation vehicle is simple in structure and easy to use, and irrigation efficiency can be improved while irrigation of ridges is guaranteed.

The invention discloses a novel flexible ecological drainage ditch structure and a construction method thereof, belongs to the technical field of drainage ditch construction, and solves the problems of serious deformation and cracking of a traditional concrete drainage ditch. The structure specifically comprises an anti-corrosion layer, a drainage layer and an anti-seepage layer. The seepage prevention layer is arranged at the bottom of the drainage ditch, the drainage layer is laid on the seepage prevention layer, and the anti-corrosion layer is laid on the drainage layer. According to the drainage ditch, the innovative design of combining the anti-corrosion layer, the drainage layer and the anti-seepage layer is adopted, so that a lower seepage body is effectively drained, the ditch body strength is improved, the basic requirements of confluence, quick drainage and seepage prevention of the drainage ditch are met, and the overall shear resistance and erosion resistance of the drainage ditch are improved; the construction method is suitable for construction of loose accumulation body slopes such as slide slag accumulation body slopes, waste slag accumulation bodies and mine dumping sites; the method has the advantages of being high in plasticity, high in terrain adaptability, high in environment flexibility, good in structure flexibility and the like.

A coal mine tunnel ditch cleaning system relates to the technical field of coal mine tunnel cleaning and comprises a walking system used for enabling the whole system to move in the extending direction of a ditch in a tunnel; the screening system is installed on the upper end face of the supporting plate, is close to the edge of the supporting plate in the advancing direction of the walking assembly and comprises a screening hopper elastically installed on the supporting plate, a screen plate is arranged in the screening hopper, and the bottom of the screening hopper communicates with a liquid discharging assembly; the feeding system is located on the outer side of the advancing direction of the walking assembly and used for conveying sundries and accumulated water in the ditch into the screening hopper. Compared with the defects that traditional manual cleaning is high in risk and low in efficiency, and a suction type ditch cleaning machine is stopped due to blocking of large gangues, the system achieves breakthrough through the integrated design of material digging and screening, a digging hopper of the feeding system rotates along with a transmission chain and can directly go deep into a ditch to dig deposits high in viscosity and mixed in component, and the problem that a suction opening is blocked is solved.

The invention discloses a method for efficiently and finely evaluating nitrogen and phosphorus consumption of a polder small micro water body, and relates to the technical field of water environment health evaluation. The method comprises the following steps: extracting pools, ditches, river network systems and hydraulic structures in a polder; based on a digital elevation model, rainfall and water level data of a polder, a geographic information system is utilized to analyze natural confluence, extreme conditions and a ground surface confluence process under strong manual regulation and control, a source-flow-confluence path of a small and micro water body in the polder is defined, and a small and micro water body topology network structure of the polder is formed; constructing a coupling source land nitrogen and phosphorus load accounting algorithm, an aquatic vegetation interception algorithm and a biogeochemical cycle process accounting algorithm, and depicting the nitrogen and phosphorus load current situation and the absorption potential of a single small and micro water body; and constructing a polder small and micro water body topology network structure-based nitrogen and phosphorus consumption network flow algorithm to realize small and micro water body nitrogen and phosphorus consumption load amount and retention amount accounting so as to complete polder small and micro water body nitrogen and phosphorus consumption evaluation.

The invention discloses a rice irrigation district irrigation amount simulation method and system, and the method comprises the steps: taking a region controlled by a backbone channel and a drainage main ditch as a standard for dividing sub-units based on a DEM and a digital canal system, carrying out the grid division of the sub-units, and obtaining an irrigation district sub-basin division result; constructing a dynamic irrigation triggering mechanism of each irrigation area sub-basin, and determining a multi-water-source cooperative scheduling scheme of each irrigation area sub-basin based on the division result of the irrigation area sub-basin; and when each irrigation sub-basin is irrigated according to the multi-water-source cooperative scheduling scheme, calculating the canal system leakage amount in each irrigation sub-basin, and determining a water distribution scheme of each irrigation sub-basin according to the canal system leakage amount. The method can be used for quickly and accurately simulating the irrigation amount and the runoff volume of the rice irrigation area, and provides a scientific basis for formulating agricultural management measures and screening water-saving high-yield technical modes.

The utility model relates to the field of planting ditching, in particular to an agricultural planting ditching machine, and aims to overcome the defects that in the prior art, fertilization and watering cannot be performed in ditches after ditching, so that the efficiency is low, manual fertilization and watering are needed, and soil generated during ditching cannot be collected, so that soil is easy to remain in the ditches. According to the scheme, the device comprises a box body and a connecting block fixedly connected to the bottom of the box body; the crawler discs are fixedly connected to the two sides of the connecting block, and the number of the crawler discs is two; the screening box is fixedly connected to the inner wall of one side of the box body; the partition plate 4 is fixedly connected to the inner wall of the screening box; the screen is fixedly connected to the inner wall of one side of the screening box; according to the ditching device, fertilization and watering can be conducted in ditches after ditching, the efficiency is improved, manual fertilization and watering are not needed, soil generated during ditching can be collected, and it is avoided that soil remains in the ditches.

The invention discloses a device for simulating influence of ditch cleaning ice cover evolution on hydrodynamic parameters and an application method thereof, and relates to the technical field of ice water dynamics and hydraulic engineering experiments. The device comprises a low-level water tank, a high-level water tank, a centrifugal pump, a flow valve, a water tank, a steady-flow perforated plate, a ditch cleaning ice cover simulation device, a first water level control grid plate, a second water level control grid plate and a flow field measurement system. According to the invention, three key parameters of ditch cleaning length, ice cover submerging water depth and roughness of the bottom of the ice cover are independently regulated and controlled, and non-contact high-precision measurement is carried out by means of a PIV technology, so that systematic and refined research on hydrodynamic parameters of an ice cover ditch cleaning area is realized. According to the method, researchers can safely and systematically research the influence of a single variable on the ice cover ditch cleaning water power at low cost, and the fundamental bottleneck of traditional field measurement in the research is solved.

The utility model discloses a subsoiling shovel type ditching and pipe laying machine for burying underground drip irrigation pipes in an orchard. The subsoiling shovel type ditching and pipe laying machine comprises a rack; the two supporting frames are arranged on the two sides of the machine frame in a sliding mode in the transverse direction. The two ditching mechanisms are respectively arranged at the front ends of the two support frames; the two drip irrigation pipe placing mechanisms are respectively arranged on the two support frames; and the two depth limiting press wheels are respectively arranged at the rear ends of the two support frames. According to the drip irrigation pipe laying device, by arranging the two supporting frames capable of moving in the transverse direction, laying operation of double rows of drip irrigation pipes can be conducted at the same time, laying of drip irrigation pipes with different row spacing can be met, in addition, by arranging the circular ring frames and the supporting sleeves, placing operation of the drip irrigation pipes is greatly simplified, and normal laying operation of the drip irrigation pipes is guaranteed.

The invention discloses a composite metal roof system and a construction method thereof. The construction method comprises the following steps that firstly, a roof truss supporting structure is constructed, wherein the roof truss supporting structure is welded to the top of a main body structure; and secondly, a main purline, a secondary purline, a bottom plate layer, a sound absorption layer, a supporting layer, a vapor barrier layer, a heat preservation layer and a waterproof layer are sequentially constructed on the top of the roof truss supporting structure and located around the daylighting roof structure to be constructed, an inner connecting keel is arranged on the inner side of the heat preservation layer in the annular direction, and an outer connecting keel is arranged on the outer side of the heat preservation layer in the annular direction. And thirdly, skylight keels are constructed. And 4, constructing an inner drainage ditch, an outer drainage ditch and a radial drainage ditch. And 5, constructing a fixed glass window and an openable glass window. And 6, the waterproof layer and the facing layer are sequentially constructed until the construction is finished. The technical problems that a traditional steel truss roof structure is complex in construction process, leakage risks exist, and heat preservation and sound insulation performance is poor are solved.

The invention relates to the technical field of stone side slope treatment, in particular to a side slope treatment construction method which comprises the following steps: S1, side slope investigation: carrying out geological investigation on a side slope area; s2, a slope stress model is established, a complete design scheme is formulated, and the project amount, the construction process and the technical requirements are determined; s3, rock excavation is conducted, stepped layered excavation is adopted, and slope cutting and leveling are conducted on the side slope; s3, construction of a drainage system: excavating an intercepting ditch at the top of the slope and excavating a drainage ditch at the toe of the slope; and S4, anchoring construction. The method has the effect of improving the stability of the side slope.