447 results about "Soil structure" patented technology

The invention relates to a geotechnical engineering geological investigation system and an investigation method thereof, which are used for solving the problems of drilling redundancy, repeated model correction and long period caused by traditional uniform hole distribution. The system comprises a geophysical exploration module, a rock-soil body structure feature extraction module, a geological abnormal area identification module, a survey detection point dynamic optimization module, a drilling sampling analysis module and a geotechnical engineering stability evaluation module. Earth material exploration is carried out on representative points to obtain a comprehensive geophysical prospecting data set, inversion is carried out according to the comprehensive geophysical prospecting data set to obtain a three-dimensional rock-soil structure, an abnormal area is recognized, accordingly, the drilling layout is dynamically optimized, and stability evaluation is completed at a time after a small amount of directional drilling sampling is carried out. By adopting the system, a high-precision geologic model and a stable evaluation result can be obtained with fewer drilled holes in a preliminary exploration stage, the cost is remarkably reduced, and the period is shortened.

The invention discloses a Xinanjiang model correction method based on CLDAS soil humidity assimilation. Soil moisture constants such as field capacity FC and wilting point WP are calculated; corresponding and mapping of a CLDAS observation layer and a model three-layer soil structure (WU, WL and WD) are realized through layered interpolation. For the problem of missing measurement of the CLDAS, a reconstruction model based on space-time Transform is introduced for filling, pixel-level uncertainty is output, and an EnKF observation covariance matrix is constructed based on the pixel-level uncertainty. And then dynamically updating the three-layer soil water content state of the model by using ensemble Kalman filtering, thereby reducing the influence of soil humidity initial estimation and simulation deviation on flood simulation. The flood simulation and real-time forecasting precision can be effectively improved, the method has the advantages of being stable in data source, clear in physical significance and high in applicability, and a new technical approach is provided for state initialization and digital hydrology research of a distributed hydrological model.

The invention discloses a humic acid type biological organic fertilizer and a preparation method thereof, and belongs to the technical field of agricultural biologication.The fertilizer is prepared from weathered coal humic acid raw powder, seaweed processing residues and insect manure as main raw materials. The soil conditioner is prepared by adding a compound microbial agent, a mineral synergist, an enzyme preparation, a coating material, a soil structure regulator, a signal molecule inducer, a trace rare earth element additive, a stabilizer and the like in a specific ratio and adopting a two-step fermentation process. The fertilizer disclosed by the invention has remarkable functions of soil improvement, nutrient slow release, microbial community regulation and control, crop stress resistance enhancement and the like, remarkably improves the yield and quality of crops, reduces the use of chemical fertilizers, promotes agricultural sustainable development, and has remarkable economic and ecological benefits.

The invention discloses an organic-inorganic composite acid soil conditioner with synergism of nitrogen element synergism and soil expansion and application, and belongs to the technical field of soil conditioners. The modifier prepared by the invention is prepared from an acid neutralizer, a structure modifier, a capacity expansion synergist and a nitrogen synergist and is prepared from the following components in parts by weight: 18 to 22 parts of dolomite powder, 6 to 10 parts of lime powder, 20 to 24 parts of oyster shell powder, 8 to 12 parts of humic acid, 4 to 8 parts of sargassum, 1 to 3 parts of sodium alginate, 7 to 11 parts of charcoal, 5 to 9 parts of sepiolite powder, 3 to 7 parts of bentonite, 6 to 10 parts of poly gamma-calcium glutamate and 3 to 7 parts of chitosan. The soil conditioner can regulate and control the soil acidity, buffer the soil capacity, improve the soil structure and balance soil nutrients, solves the problems of high re-acidification rate, soil hardening and nutrient imbalance of a traditional lime conditioner, and is suitable for pHlt; and 6.5, repairing the acid soil.

The invention relates to the technical field of intelligent management service, in particular to a soil structure intelligent improvement system, which comprises an intelligent service management platform used for processing data related to soil improvement and managing and controlling other modules; the soil data acquisition module is used for acquiring soil data; the intelligent service management platform comprises an improved decision analysis module; the data analysis module is used for performing data analysis based on soil data to generate a dynamic soil improvement operation plan and sending a control instruction; the control module is used for receiving a control instruction sent by the intelligent service management platform according to the dynamic soil improvement operation plan for soil improvement; the feedback module is used for receiving and confirming the execution state and result information of the resource scheduling module and feeding back to the intelligent service management platform; the monitoring module is used for monitoring video images of the land parcels in real time, and refined and intelligent management of soil improvement is achieved by constructing a closed loop of multi-source sensing, data fusion, intelligent decision making, accurate execution and dynamic feedback.

According to the indigenous plant adaptability screening test method simulating the environmental stress condition, the transparent incubator is combined with real-time monitoring equipment such as the high-resolution miniature camera array and the optical fiber sensor, complex laboratory equipment is replaced, and the root system observation problem is solved. The environmental stress condition of a target habitat is accurately simulated, the environmental characteristics of drought, depletion, special soil structure and the like of the high and steep slope are accurately restored by adopting layered matrix and dynamic stress intervention, a systematic evaluation system is established by combining multi-index quantification and a similar analytic hierarchy process, the subjectivity of artificial experience judgment is avoided, and the evaluation accuracy of the high and steep slope is improved. And the scientificity and engineering applicability of indigenous plant screening are remarkably improved.

The invention relates to the technical field of urban ecological engineering, in particular to a parking lot authigenic plant planting method based on carbon immobilization. The invention provides a parking lot authigenic plant planting method based on carbon immobilization, which is characterized in that a three-stage ecological rotation mechanism is introduced into vegetation construction according to the sequence of a pioneer plant period, a green manure turning and pressing soil returning period and an authigenic plant community succession period to form a parking lot authigenic plant pool, and the parking lot authigenic plant planting based on carbon immobilization is realized. The invention aims to improve the greening ecological benefit and carbon sink capacity of the parking lot by optimizing the soil structure and adopting the crop rotation technology, provides a plant pool structure which adapts to the environment of the parking lot, has high-carbon solid storage capacity and can realize autonomous ecological circulation, and improves the soil health, inhibits diseases and prolongs the plant coverage period through the crop rotation technology. The problems that traditional parking lot greening depends on manual intervention, and the carbon sink benefit is low are solved, and continuous carbon sink under the low maintenance cost is achieved.

The invention provides a compound fertilizer for improving acid soil as well as a preparation method and application thereof, and belongs to the technical field of fertilizer preparation. The compound fertilizer comprises the following components in percentage by weight: 40-55% of poultry manure biochar, 20-35% of a medium element compound, 10-20% of a compound conditioner and 5-10% of a binder. The compound fertilizer can quickly and enduringly neutralize soil acidity, effectively passivate aluminum and manganese ion poison, accurately supplement calcium, magnesium, sulfur and other salt-based nutrients, improve the soil structure and fertilizer retention ability, and overcome the oneness and short-term effect of a traditional lime improvement method. The perfect combination of agricultural waste recycling and acid soil comprehensive treatment is realized, and the fertilizer is an efficient, environment-friendly and multifunctional soil improvement type fertilizer.

The utility model discloses a combined type top-down pipe jacking working well which comprises a well chamber, a plurality of stabilizing piles and a plurality of horizontally-arranged concrete well rings, and the well chamber is vertically dug. The stabilizing piles are vertically inserted into the well chamber, the side wall of each stabilizing pile is attached to the inner wall of the well chamber, and the side walls of the adjacent stabilizing piles are connected in a sealed mode so that all the stabilizing piles can define a stabilizing frame. All the concrete walling cribs are sequentially stacked in the well chamber from top to bottom, and the outer wall of each concrete walling crib abuts against the inner wall of the stabilizing frame. The problems that a water stopping and soil fixing structure of a reverse well arranged in a soft soil area or a high underground water level area is complex, cost is high, and the water stopping and soil fixing effect is not ideal can be solved.

The invention discloses a calcium-enriched rice straw biochar core-shell particle soil conditioner, which belongs to the technical field of soil improvement and farmland water environment governance, and comprises the following components: a calcium-enriched rice straw biochar core, desulfurized gypsum, a binder and a functional auxiliary agent, the binder is selected from one or more of starch, lignosulfonate, sodium carboxymethyl cellulose and sodium alginate; the functional additive is selected from one or more of humic acid, trace element fertilizer and organic fertilizer; through the comprehensive design on the material structure, the Ca < 2 + > slow release mechanism and the application system, calcium and sodium replacement and soil salinity and alkalinity reduction, flocculation and sedimentation of soil colloid in an alkaline environment, blocking and weakening of a soil-water interface colloid pollution channel and continuous improvement of the soil structure and fertility are synergistically realized.

The application discloses a soil deep loosening simulation method based on DEM-FEM bidirectional coupling. The method comprises the following steps: establishing a soil discrete element model and a deep loosening tool finite element model; using the discrete element DEM simulation to analyze the influence law of soil characteristic parameters and deep loosening tool motion parameters on soil deep loosening effect and deep loosening tool working resistance; changing the soil characteristic parameters and deep loosening tool motion parameters, and calculating the information such as soil deep loosening particle mixing degree, deep loosening tool working efficiency and working resistance under different variables; analyzing the influence law of the working resistance obtained from the DEM on the deep loosening tool structure through the finite element FEM analysis, changing the soil structure parameters and deep loosening tool structure parameters, and counting the statics and dynamics analysis results under different variables; simulating through the DEM-FEM bidirectional coupling, analyzing the soil deep loosening mechanism of the deep loosening tool, and obtaining the parameter and structure optimization results. Compared with the prior art, the application can effectively reduce resistance and consumption, and improve working efficiency.

The invention discloses copper tailings-based ecological soil and an adopted conjugate improvement method, the copper tailings-based ecological soil comprises lime modified copper tailings and a tailings modifier, and the tailings modifier comprises a soil structure building agent, clay and water; the soil structure building agent comprises a composite high polymer material, an organic fertilizer and an anti-reflection fertilizer-retaining mineral material; the composite high polymer material contains xanthan gum and polyacrylamide, and the organic fertilizer contains humic acid. According to the method, the copper tailings serve as matrix soil, a good ecological environment suitable for plant growth is built by conducting in-situ modification on the tailings, the problems that soil is difficult to take through a soil dressing method and the like are effectively solved, and the ecological management time cost and the economic cost are saved; besides, the improved copper tailings are expected to achieve effective consideration of the characteristics of water retention / water permeability, agglomeration / loosening, air permeability / fertilizer retention and the like, high-added-value resource utilization of the copper tailings is achieved, a large-area copper tailings covering area is improved to form a good carbon sink area, and important economic and environmental benefits are achieved.

The utility model relates to the technical field of water conservancy projects, in particular to a water conservancy project slope protection structure with an anti-scouring effect, which comprises a footstone layer and a slope protection main body, the slope protection main body is fixedly arranged on the left side of the footstone layer, and a plurality of ecological slope protection units are fixedly arranged on the slope surface of the slope protection main body. The multiple ecological slope protection units are arranged in rows, a water guide frame is fixedly arranged between every two rows of ecological slope protection units, the water guide frames are fixedly arranged on the slope protection main body, each ecological slope protection unit comprises a concrete mounting frame, vegetation bags are assembled in the concrete mounting frames, the vegetation bags are filled with soil, and the water guide frames are fixedly arranged on the slope protection main body. Grass seeds used for improving the soil quality are wrapped in the soil, and a protective net is fixedly arranged on the outer wall of the side, close to the dam, of the concrete mounting frame through bolts. According to the slope protection structure, multiple anti-scouring slope protection modes are combined together, the physical protection effect of the slope protection structure is improved, the soil structure is improved, and ecological restoration is achieved.

The present application relates to an environment-responsive intelligent controlled-release organic fertilizer and a preparation method thereof, and belongs to the technical field of composite organic fertilizer. In order to solve the problem that the traditional soil improvement method cannot simultaneously improve the efficiency of phosphorus supply and the soil, the present application provides a preparation method of an environment-responsive intelligent controlled-release organic fertilizer. The method comprises the following steps: crushing and drying agricultural and forestry waste, and then placing the waste in a calcium source compound solution to complete preloading; drying and grinding to obtain a preloaded sample; pyrolyzing the preloaded sample in an inert atmosphere to obtain calcium-modified biochar; mixing the calcium-modified biochar with a phosphorus-containing solution to perform adsorption, thereby obtaining phosphorus-loaded biochar; and mixing the phosphorus-loaded biochar with peat and a binder, and then granulating and forming to obtain the organic fertilizer. The organic fertilizer has the environment-responsive characteristic, can adapt to the growth of crops in a three-stage phosphorus release mode, can reduce phosphorus fixation, can improve the soil structure, can stabilize the soil pH, and can improve the differentiation of the micro-niche ecological niche of the soil.

The invention relates to the technical field of slope supporting construction of constructional engineering, and particularly discloses a redundant and safe reinforced soil structure and a construction method. Reinforced soil is of a multi-step structure and is constructed on a weathered rock foundation; the reinforced soil sequentially comprises a plain concrete foundation, multiple layers of integral steel-plastic geogrids, a graded broken stone drainage layer, a clay water-resisting layer, a waterproof geomembrane, a concrete sealing bottom and plain filling soil from bottom to top, and reinforced concrete panels are poured on the outer sides of the integral steel-plastic geogrids. A reinforced concrete foundation is arranged at the bottom of the reinforced concrete face plate, a cement soil cushion layer is laid at the bottom of the reinforced concrete face plate, drainage holes and pre-embedded steel tie bars are arranged in the reinforced concrete face plate, the pre-embedded steel tie bars and the whole steel-plastic geogrids are bundled up, and a gravel inverted filter bag is arranged in each layer of steel-plastic geogrids. The clay water-resisting layer and the gravel drainage layer are laid to achieve redundant safe water prevention and drainage, the construction period is controllable, and the manufacturing cost is relatively low.

The utility model discloses a kind of for simulating root litter in situ sustained input device and its application, through the design of the soil column with stainless steel handle, 1 μm aperture nylon net, the PVC pipe with hole in bottom and multi-generation root litter in situ sustained input simulation system, the dynamic simulation of root litter sustained input process under soil profile scale is realized.The device solves the limitation of traditional decomposition experiment, can dynamically add root litter without destroying soil structure, while effectively blocking exogenous interference, ensuring the accuracy and consistency of experiment.The utility model provides key technical platform for studying the influence of root litter in situ sustained input on soil carbon stability, and is suitable for ecology, carbon cycle research and ecological system management and other fields.

The invention relates to the technical field of grape planting, and particularly discloses an intelligent soil loosening device for improving a grape planting soil structure, the intelligent soil loosening device comprises a mounting shell, the bottom of the mounting shell is fixedly connected with multiple groups of universal wheels, and the universal wheels are uniformly distributed at the bottom of the mounting shell; a first connecting support is fixedly connected to the top of the mounting shell, a handle is fixedly connected to one side of the first connecting support, the part, located on one side of the first connecting support, of the top of the mounting shell penetrates through and is fixedly connected with a deep ploughing device, and a connecting groove is formed in the part, located on one side of the deep ploughing device, of the side face of the mounting shell. A first water pump is fixedly connected to the part, located on one side of the deep ploughing device, of the top of the mounting shell, the intelligent soil loosening device for improving the grape planting soil structure solves the problem that soil turning operation cannot be conducted on deep land, meanwhile, pesticide can be sprayed into the soil while soil turning is conducted, the soil turning efficiency is improved, and the pesticide and the soil are evenly mixed.

The application discloses a kind of dry lake basin ecological comprehensive repair and intelligent monitoring method, the dry lake basin ecological comprehensive repair method, including by the way such as the soil transplanting of native plant in dry lake basin, realize locking edge sand control in dry lake basin inside;By planting local plant in the circumferential planting of dry lake basin edge, form sand material containment plant strip;By the way such as sowing psammophyte on the quicksand of dry lake basin periphery, to fix ground quicksand;And, by the way such as planting sand-fixing arbor and shrub in the upwind area of dry lake basin periphery and covering sand-fixing net, construct plant sand-fixing grid.The application can significantly improve the wind prevention and sand fixation efficiency of the surrounding area of dry lake basin, effectively reduce the frequency of wind-sand disaster, provide a solid guarantee for regional safety, while effectively promote the optimization of soil structure and the natural recovery of vegetation, not only enhance the water and fertilizer conservation capacity of soil, but also significantly improve the service function of regional ecosystem, such as water conservation, climate regulation and the like.

The invention relates to the technical field of soil ecology, and particularly discloses a method for quantifying the density of topsoil habitat soil arthropods based on a trap method.The method comprises the following steps that S1, trap method sampling is conducted, specifically, when a soil arthropod sample is collected, a soil auger is used for digging out a trap, a trap cup containing preserving fluid is placed in the trap for soil animal investigation, and the soil arthropod sample is collected; the time duration is one week which is used most widely in the literature; s2, sampling by a digging method: when a soil arthropod sample is collected, placing a prepared sampling frame of one square meter on sampling soil, digging and collecting soil animals with the depth of 10cm in the sampling frame, picking large arthropods by using a hand picking method, and separating medium soil animals such as springtails, mites and insects by using a dry funnel method. According to the method for quantifying the density of the surface soil habitat soil arthropods based on the trap method, the actual soil excavation area can be reduced to the maximum extent, the damage to the soil structure of a sampling field is reduced, and the possibility is provided for long-term experiments.

The invention discloses a deep soil sampling device, and belongs to the technical field of soil sampling, the deep soil sampling device comprises a main cylinder, a bottom cylinder, a petal-type soil drilling cone, a sampling cylinder, a limiting connection assembly, a driving screw rod and a driving positioning member, a plurality of mounting slideways are arranged on the side wall of the bottom cylinder, elastic reset members are arranged on the mounting slideways, the petal-type soil drilling cone comprises a plurality of petal-type cone sheets, and the petal-type cone sheets are arranged on the bottom cylinder. The petal-type conical piece is movably connected with the elastic reset piece through a rigid connecting piece, fixing columns are symmetrically arranged on the outer edge of a top plate at the upper end of the sampling barrel along the diameter line, locking openings are formed in the fixing columns, the limiting connecting assembly comprises a quick-release locking piece matched with the locking openings, the driving screw rod is rotationally connected with the limiting disc, and the driving positioning piece comprises a semi-ring piece. Threaded teeth are arranged on the inner side walls of the semi-ring pieces, and the two semi-ring pieces form a positioning thread sleeve matched with the driving screw. The soil sampling device has the beneficial effects that soil sampling at different depths can be efficiently and accurately completed without repeated drilling, the structural integrity of the sampled soil is guaranteed, and the characteristics of the soil at different depths are truly reflected.

The invention relates to the technical field of geological monitoring, in particular to a geological disaster risk area detection method, system and device and a medium. The method comprises the following steps: firstly, collecting topographic data of a survey area to establish a digital topographic model, and generating an optimal survey line arrangement scheme; then high-density electrical method measurement is carried out along the measuring line, and a low-resistance abnormal area is determined through abnormal value analysis; geological radar detection is carried out, and a soil body structure weak zone is identified according to electromagnetic wave reflection signal distribution characteristics; counting the spatial coincidence degree of the two types of anomalies, and judging the region with the relatively high coincidence degree as a high-risk region; and finally, generating a risk distribution diagram in combination with a preset risk assessment model. Through fusion analysis of the multi-source detection data, the limitation of single physical field detection is avoided, and the reliability of risk area identification is improved.

The utility model belongs to the technical field of saline-alkali soil planting, and particularly relates to a before-winter no-tillage oilseed rape ditching seeder which comprises a vehicle body, a rack and a seed box arranged on the rack, a seeder is arranged below the rack, and the input end of the seeder is connected with the seed box through a seed falling pipe. A ditching wheel is hinged to the position, located at the front end of the seeder, of the lower portion of the rack, the ditching wheel has the degree of freedom of rotating in the advancing direction of the vehicle body, and the ditching wheel and the seeder are located in the same vertical plane and are parallel to the advancing direction of the vehicle body. According to the utility model, the ditching wheel is additionally arranged on the rack, and the ditching wheel and the seeder are arranged front and back along the advancing direction of the vehicle body, so that rapeseeds are accurately planted into soil without large-area ploughing, the damage to the soil structure is reduced, the soil moisture is favorably kept, and the existing soil moisture is fully utilized to ensure the germination and emergence of the rapeseeds; the problem that rape cannot be sown in time after soil moisture loss caused by soil ploughing is effectively solved.

The utility model discloses a small turning plough with a leveling function, and belongs to the technical field of small turning ploughs. Comprising a rack, a soil crushing assembly, a leveling assembly and a plowing assembly are arranged below the rack, the leveling assembly is located between the soil crushing assembly and the plowing assembly, the plowing assembly comprises a third mounting frame, a plowing shaft is arranged in the third mounting frame, and the two ends of the plowing shaft are connected with the third mounting frame through bearings; coulters are arranged on the outer wall of the plowing shaft and are uniformly distributed in the circumferential direction of the plowing shaft in a herringbone shape. According to the small turning plough with the leveling function, by arranging the turning assembly and the herringbone coulter, bidirectional soil turning and loosening and soil cutting and turning can be achieved, so that the soil structure is effectively broken, the soil hardening problem can be avoided, the air permeability and drainage performance of soil are improved, the rotation direction of the turning shaft interacts with the soil structure, and the leveling effect is improved. Therefore, the loosening effect of soil is enhanced, and the tillage depth and quality are improved.

The invention relates to the technical field of geological exploration, in particular to a geological sampling device based on a hyperspectral scanning technology. Comprising a mounting shaft, the mounting shaft is detachably connected with an outer cylinder, the lower end of the outer cylinder is detachably connected with a drill bit, the mounting shaft is rotatably connected with a mounting seat, the mounting seat is detachably connected with a middle cylinder and an inner cylinder, the lower end of the middle cylinder is detachably connected with a cutter, and the peripheral side of the inner cylinder is sleeved with a sealing bag; a sealing disc is connected into the inner cylinder in a sealed and sliding mode, the installation base, the inner cylinder and the sealing disc jointly form a liquid storage cavity, and the sealing bag is fixedly connected with a filling bag. The fluid in the liquid storage cavity is controlled to enter the space between the filling bag and the sealing bag, so that the filling bag deforms and provides support for a fault sample, the space between two sections of samples of the fault is filled, the soil structure level of the fault sample is kept, and the problem of low sampling efficiency caused by replacement of a sampling position is avoided.

The invention provides an organic improver for improving soil structure stability and an improvement method, and belongs to the technical field of improvement of specific waste soil of a refuse landfill. The organic improver for improving the soil structure stability comprises a physical improvement component and a chemical improvement component, the physical improvement component is wormcast with the particle size of 0 to 2.5 mm or 2.5 to 5.0 mm; the chemical improvement component comprises an inorganic base fertilizer and an organic fertilizer, and the application mass ratio of the organic fertilizer to the inorganic base fertilizer is (50: 1)-(40: 1). A physical-chemical coupling synergistic scheme is adopted, physical improvement components and chemical improvement components are clear in division of labor and have synergistic interaction, the core problems of soil physical structure hardening and chemical fertility deficiency are synchronously solved, the defect of single improvement effect in the prior art is overcome, and synchronous optimization of soil physical properties and chemical fertility is achieved.

The invention relates to the field of watermelon planting, in particular to a watermelon rotation planting device and method.The watermelon rotation planting device comprises a rack, a vine processing mechanism, a sowing mechanism, a soil covering mechanism and a driving mechanism are arranged on the rack, and the vine processing mechanism is used for collecting and smashing vines; the driving mechanism is used for driving the device to advance; the driving mechanism is further used for driving the vine processing mechanism to operate synchronously, and then the vines are collected and smashed in the advancing process. The sowing mechanism is arranged behind the vine processing mechanism, and the sowing mechanism is used for sowing crop seeds adaptive to crop rotation into the land; the soil covering mechanism is arranged on the rear side of the seeding mechanism; the driving mechanism is also used for driving the soil covering mechanism to synchronously operate; and the soil covering mechanism is used for carrying out soil covering treatment on the sown seed furrows. Through power output of the driving mechanism, all the mechanisms operate synchronously and coordinately, the soil structure is improved, a good foundation is provided for growth of subsequent crop rotation crops, and the sustainability of agricultural production is enhanced.

The present invention relates to a foldable soil cultivation machine with rotary soil cultivation units. Particularly advantageous are the preservation of soil structure through minimal soil disturbance, low energy consumption compared to alternative soil loosening methods, good road transportability, and high combinability of the machine. The tension between the goals of large working widths and good transport characteristics is resolved by the folding tillage machine, which comprises at least several rotary tillage units, several frame elements, at least one linear actuator configured to drive the folding movement between at least two frame elements about the rotatably mounted axis, and at least one transmission mechanism, wherein the at least one transmission mechanism is connected to the at least one linear actuator and at least two frame elements in such a way that the angle of rotation of the frame elements during the folding process about the rotatable axis can be changed in a range of at least 170°, preferably 180°, and this folding movement between a pair of frame elements is driven by a single linear actuator or a set of several parallel, parallel-kinematically acting linear actuators.

The invention discloses a heavy metal pollution-based soil remediation eluting agent and a preparation method thereof, and relates to the technical field of soil remediation, the heavy metal pollution-based soil remediation eluting agent comprises 0.5-5 parts of a natural polysaccharide derivative, 1-10 parts of low molecular organic acid, 5-20 parts of an amino acid chelating agent, 0.1-3 parts of a cross-linking agent and the balance of water. The eluting agent has the advantages that through the multi-component synergistic effect of the natural polysaccharide derivative, the low-molecular organic acid and the amino acid chelating agent, the removal efficiency of various heavy metals in soil is remarkably improved, and the natural polysaccharide derivative has good heavy metal adsorption and flocculation capacity; the low-molecular organic acid can effectively dissolve heavy metal ions, the amino acid chelating agent and the low-molecular organic acid can form a stable water-soluble complex to prevent heavy metal from being re-precipitated, the combination avoids the damage of traditional strong acid and strong alkali eluting agents to the soil structure, all the main components have biodegradability, and the heavy metal leaching agent is environmentally friendly. And the dual goals of efficient restoration and soil ecological health maintenance are achieved.

The invention provides a soil remediation agent as well as a preparation method and application thereof, and relates to the technical field of soil remediation. The soil remediation agent disclosed by the invention is prepared from 15 to 20 parts of a microbial agent, 20 to 25 parts of humic acid, 15 to 20 parts of fulvic acid, 5 to 10 parts of a soybean meal extract, 1 to 1.5 parts of a seaweed extract and 20 to 25 parts of a plant extract, wherein the microbial agent comprises an inner core composed of straw biochar and a compound bacteria solution, and a shell formed by methoxypolyethylene glycol modified chitosan, sodium caseinate and sodium tripolyphosphate; the composite bacterial liquid comprises a bacillus thuringiensis bacterial liquid and a beauveria bassiana bacterial liquid in a volume ratio of 10: (5-8). The soil remediation agent can improve the soil structure, relieve acidification and hardening, effectively resist diseases for a long time, fundamentally improve the physicochemical properties and micro-ecological environment of the ginger continuous cropping soil, and realize comprehensive remediation.