141results about How to "Prevent washout" patented technology

The invention provides a pitting field and hedgerow combined farming mode and a structure thereof. According to the invention, the upper and lower edges of a slope-surface land parcel are provided with permanent slope-protecting ridges; gutters are dug at the outer sides of the ridges and at the left and right sides of the slope-surface land parcel; the gutters are interconnected to form a slope-surface gutterway; horizontal interception ditches with equal altitude are dug in the interior of the slope-surface land parcel from top to bottom according to critical slope length which leads to rill erosion, so the slope-surface land parcel is divided into a plurality of farming districts with equal length; ridges and furrows are constructed along slope direction in the farming districts; the downslope furrows, the interception ditches with equal altitude and the slope-surface gutters are communicated to form a slope-surface water drainage network; downslope furrow pitting field earth ridges and equal-attitude interception ditch pitting field earth ridges are constructed in the downslope furrows and the interception ditches at same intervals, thereby forming downslope furrow pitting fields; and cross slope ridges with equal altitude are constructed at the middle parts of the farming districts, and water-retaining plants are planted on the ridges to form ridge hedgerow. The combined farming mode provided by the invention has the advantages of simple operation, low cost and substantial control effect on water and soil loss.

The invention relates to the field of real time data interaction and control during data transmission of a computer system and specifically relates to an extensible traffic control data interaction method and a system. The method includes that a data base/ a data base file (dbf) is used as a real time information interaction interface between a stock exchange and a market participant, the market participant submits order data to a data base interface, and the stock exchange submits response data and executive report data to the data base interface. The method is characterized in that an offer machine adaptively controls the number of requests sent to a main exchange machine in a unit time, and by means of data control, data peak impact preventing and a data base interaction method of the interface data base, huge data pressure is prevented from being brought to a server in a short time. Compared with data interaction methods in prior art, the data interaction method has the advantages of being capable of achieving unification of traffic control, data peak preventing and the extensible data base interaction method so that traffic speeds are increased, data peaks are prevented from overwhelming procedures, real-time data monitoring and checking are achieved, and the method has good characteristics of being high in performances, extensible and low in coupling.

The invention relates to a bridge pier protective device comprising at least one anti-collision structure and connection structures used for connecting the adjacent anti-collision structures or the anti-collision structure and a bridge pier. Each anti-collision structure comprises an outer layer collision bearing structure, a middle energy-absorbing supporting structure and an inner layer protective structure, wherein the middle energy-absorbing supporting structure is a negative poisson ratio structure formed in the manner that multiple layers of energy absorbing units are arranged in an intersecting manner according to a certain law, each energy-absorbing unit is in an inwards concave hexagon and comprises a group of opposite side plates and a group of inwards concave folded plates opposite to each other, and the included angle between each side plate and the corresponding inwards concave folded plate is smaller than 90 degrees. The anti-collision structure has the negative poisson ratio feature, the energy dissipation time is effectively prolonged, the deformation degree of the energy absorption material is effectively improved, the protective function of the anti-collision device on the bridge pier and other aquatic buildings is greatly improved, and the structure stability is also improved. The structure of the energy-absorbing units is periodically arranged, so that the structure is simple, the production technology is simple, and the product quality is easy to control; and in this way, the anti-collision effect can be improved, and the manufacturing cost is reduced.

The invention discloses a hinge dam, and belongs to the field of water blocking equipment. The hinge dam comprises a foundation, a dam face, a hydraulic driving mechanism and a base, wherein the base is fixed on the foundation, and a hollow bottom shaft hinged to the base is arranged on the bottom end of the dam face; and a containing cavity is formed in the land side of the dam face. The hydraulic driving mechanism comprises a hydraulic cylinder, a hydraulic unit, a sealing oil tank and a sealing control box, wherein the bottom end of the hydraulic cylinder is hinged to the base, and the top end of the hydraulic cylinder is hinged to the land side of the dam face; the hydraulic unit is connected with the hydraulic cylinder through a hydraulic line; the sealing oil tank is connected with the hydraulic unit though an oil line; the sealing control box is connected with the hydraulic unit through control cables; the hydraulic line, the hydraulic unit, the oil line, the sealing oil tank and the sealing control box are all fixed in the containing cavity; and the control cables penetrate out of the wall of the hollow bottom shaft to be connected with the sealing control box. According to the hinge dam, vibration of the dam face under the condition of dynamic load is effectively avoided, installation construction and later maintenance are convenient, the function that the hinge dam falls for a certain height automatically when any position stores water and is overloaded is achieved, and accordingly the situation that the dam or the dam face is destroyed by rush of water due to an over-large water overflowing height is avoided.

The invention relates to the technical field of water and soil loss prevention, in particular to a slope protection device for preventing and treating water and soil loss, and the device comprises ananchoring mechanism, a slope protection base, a positioning inserted rod, a slope protection body, a vegetation slope protection structure, an inclined plane regulator and reinforcing ribs, wherein the anchoring mechanism is rotatably connected to the front end of the slope protection base; the slope protection body is fixed in the middle of the top end of the slope protection base; four corners of the slope protection base are respectively connected with the positioning inserted rod; the two sides of the front end of the slope protection body are fixedly connected with the two sides of the front end of the slope protection base through the reinforcing ribs respectively; the two sides of the rear end of the slope protection body are fixedly connected with the two sides of the rear end of the slope protection base through the reinforcing ribs respectively; and the slope protection device combines the building slope protection with the ecological vegetation slope protection, by plantingvegetation on the inner side of the vegetation slope protection structure, the preparation of planting is protected by the vegetation slope protection structure, and the stability between the plantinginitial stage of the vegetation and the ground is improved, and the slope protection device for preventing and treating water and soil loss is convenient for improving the growth of the ecological vegetation slope protection.

The embodiment of the invention provides a device packaging structure and a preparation method therefor, and relates to the technical field of display. The structure can prevent first packaging glue from washing first packaging glue away during the stitching of a substrate and a packaging cover plate because of the excessive stitching pressure. The structure comprises the substrate and the packaging cover plate, which are set oppositely; a to-be-packaged device formed on the substrate; the first packaging glue which is formed at the edge of the packaging cover plate, and is used for enabling the packaging cover plate and the substrate to be connected to form a closed space, wherein the to-be-packaged device is located in the closed space; a plurality of supporting parts which are formed on the packaging cover plate and located in a region which is limited by the first packaging glue, wherein the height of the supporting parts is less than the height of the first packaging glue; and a second packaging glue which is disposed in the region limited by the first packaging glue. The structure is used for packaging.

The invention relates to an experimental tank system of a riparian zone, belonging to the field of physical model experiments in hydraulic engineering. The experimental tank system comprises a tank control platform, an experimental composite-type tank, dual-cycle water supply systems, a dual-level flow control system and a switching system. According to the invention, a cyclic surface water supply system and a cyclic underground water supply system which are independent can be used for effectively controlling surface water of rivers to circulate at a higher speed and underground water to circulate at a low speed, and thus river and river bank water flow environments which further accord with natural conditions are provided for a riparian zone experiment; the dual-level flow control system can be used for adjusting and controlling level and flow boundary conditions of the surface water of the rivers and the underground water of the river bank simultaneously, so that the problems that level and flow conditions of the rivers can be independently adjusted only in the traditional river dynamics experiment and level and flow conditions of the underground water can be independently adjusted only in the traditional underground water experiment; and the electronic intelligent switching system can be used for intelligently adjusting and controlling switch-on and switch-off as well as openness of relative power supply switches, valves, tail gates and the like of the experimental tank system. The experimental tank system disclosed by the invention has high automation degree and is provided with an experiment control platform which is simple and easy to operate, so that a user can finish related operations of the experimental tank system of the riparian zone in the same control interface; and the experimental tank system has a fault prompt function and is convenient for emergent measure taking and equipment overhauling.

The invention provides a preparation method of drug balloons as well as the drug balloons prepared by the preparation method and application thereof. The preparation method is characterized by comprising the following steps: curing chitosan to surfaces of balloons to obtain balloons with surfaces modified by the chitosan; spraying a drug solution on the obtained balloons with the surfaces modified by the chitosan to obtain the balloons with surfaces provided with drug coatings; carrying out surface solvation treatment on the balloons and carrying out segmented folding and packing to obtain the drug balloons. According to the drug balloons prepared by the preparation method provided by the invention, the drug coatings can be uniformly and firmly combined on the surfaces of the balloons and not easily fall off; drugs are prevented from being washed off in an in-vivo conveying process; the loss of drugs is reduced and the utilization rate of the drugs is improved; the preparation method provided by the invention is accurate, stable and efficient, is suitable for industrial large-scale production and has a wide application prospect.

The invention relates to the technical field of crop pests controlling technology, and particularly relates to a composition for controlling invertebrate crop pests such as snails or the like, and a preparation method and an application thereof. The composition for controlling crop pests comprises carboxymethylcellulose sodium and blue vitriol and is used for controlling snail type pests. Compared with the prior art, the composition has a synergistic effect of the carboxymethylcellulose sodium and the blue vitriol on the contacted snail type pests, so that the snail type pests are prevented from continued creeping and harming related crops by means of stimulation on their sense organs, and other parts of the crops is [are] prevented from being polluted by insecticides. Furthermore, the composition can be effectively prevented from being washed by rainwater, and thereby a stable and lasting controlling effect can be maintained. A green and environment-friendly type pest-preventing operation is achieved without any safety hidden trouble.

The invention relates to a part of a washing machine and in particular relates to a buffer water inlet tube of a washing machine. The buffer water inlet tube of the washing machine comprises a tube body (1), wherein a buffer filtering screen (2) is arranged inside the tube body (1); and the buffer filtering screen (2) is in a spherical surface shape protruding towards the water inlet direction. By additionally installing the buffer filtering screen, the speed of the water flow is reduced greatly, the impact of the intake water to the internal water pipes in the washing machine is reduced effectively, and on the other hand, certain impurities in the water are filtered incidentally, thereby preventing the interior of the washing machine from being blocked; and since the buffer filtering screen protrudes towards the water inlet direction, the intake water is reduced to the minimum after passing through the buffer filtering screen due to the action of the spherical surface.

The invention relates to a geotechnical centrifugal field rainfall and water level change working condition simulation device and method. The device comprises a model box driven by a centrifugal machine to rotate, wherein a model is arranged in the model box; a water storage box is arranged at the upper part of the model box; a water conveying pipe is arranged between the water storage box and themodel box; water in the water storage box is conveyed into the model box by the water conveying pipe so as to control the water level in the model box to ascend; an atomization spray head is arrangedabove the model; the atomization spray head simulates the rainfall process, and the water in the water storage box is sprayed onto the model; a water collecting box is arranged under the model box; the model box discharges water in the box into the water collecting box through a water discharging opening. The complicated work conditions such as water level rise, water level rise caused by rainfall can be simulated; the experiment data accuracy is improved; through the arrangement of the atomization spray head, the uniform covering of the model rainfall region is realized; the slope surface destroy caused by flushing due to too great raindrop is prevented.

The invention discloses a method and a device for detecting and identifying air leakage of an explosion-proof valve of abattery cover plate. The device comprises a battery body and a battery cover plate installed on the upper part of the battery body, the middle part of the battery cover plate is provided with the explosion-proof valve, the top of the explosion-proof valve is provided with an air leakage identification unit, and the air leakage identification unit is provided with air leakage detection test paper. After the battery is filled with electrolyte, if the electrolyte leaks due to welding quality defects of the explosion-proof valve and gas generated after the leaked electrolyte is in contact with air is in contact with the air leakage detection test paper, the color of the air leakage detection test paper changes, and whether the color of the air leakage detection test paper changes or not is observed by naked eyes to judge whether the explosion-proof valve leaks or not. According to the invention, whether the explosion-proof valve has the welding defect can be simply and rapidly judged, the abnormal battery is identified, the abnormal battery is prevented from entering the subsequent process and flowing to the market to cause greater potential safety hazards, and the use safety of the battery is ensured while the detection cost is reduced.

The invention provides an excavation method of a barrier lake aerial drainage tunnel. The excavation method of the barrier lake aerial drainage tunnel is characterized in that small space excavation is sectionally adopted, a large tunnel is formed by a manner of successive jacking in sections, at the same time, the top end and the two side ends of each section of the tunnel are continuously strengthened and supported according to successive jacking, and a steel body of each section of the tunnel is formed after strengthening and supporting; during aerial drainage, water constantly scours the bottom surface of soil mass, the bottom surface of the tunnel is hollowed out, the steel body of each section of the tunnel decreases continuously with the bottom surface of the soil mass, and the barrier lake aerial drainage height is further decreased; and the starting position of small space excavation is set in the unilateral direction or bilateral direction of a barrier lake or in a middle open caisson, construction of the open caisson is carried out in one-direction or two-direction manner, and a flow control device is arranged in the steel body of the aerial drainage tunnel or the open caisson. According to the excavation method of the barrier lake aerial drainage tunnel, the earth excavated volume is greatly decreased, the working face is increased by setting the open caisson on anexcavation line, the excavation length of each working face is greatly shortened, and it is conducive to start the aerial drainage and remove danger work in a very short time.

The invention relates to the technical field of plant cultivation, in particular to a flower-fruit pot soil structure and a preparation method thereof. The preparation method includes selecting and preprocessing a cultivation pot for flowers and fruits, laying garden soil mixed with base fertilizer at the bottom of the pot to form a garden soil layer, laying mixed soil made of ceramsites, the garden soil and humus soil on the garden soil layer to form a compound soil layer, laying the humus soil on the compound soil layer to form a humus soil layer, and laying the ceramsites on the humus soil layer to form a ceremsite layer. The compound soil layer is made by mixing of the ceramsites, the garden soil and the humus soil according to an optional proportion. Comprehensive improvements are performed on soil content and soil delamination of pot soil, so that soil layer structures in cultivation pots for the flowers and the fruits and the like can be reasonable, breathability, water retention and manure-keeping performance of soil can be improved, a good water, manure and gas exchanging space is provided to a plant root system, and the flower-fruit pot soil structure is specially applicable to large or slightly large potted flowers and trees or fruit trees.

The invention discloses a configuration method for light-potentially rocky desertification environmental plant hedge in karst region. The configuration method comprises selection of plant hedge planting type, land consolidation, plant hedge planting, late stage watering management, later stage pruning management forming plant hedge configuration form of pyracantha fortuneana, climbers+shrubs+herbs, climbers+small trees+herbs, herbs+shrubs; the plant hedge configuration form of pyracantha fortuneana, climbers+shrubs+herbs, climbers+small trees+herbs, herbs+shrubs is obtained in the method, control of soil erosion is conducted concerning light-potentially rocky desertification in karst region, the surface coverage is increased, the surface flow rate is reduced, the soil erosion is decreased, and the soil fertility is improved and preserved. Cash crops such as Hypericum monogynum, pyracantha fortuneana, Trifolium repens, and Prunus Humilis Bunge are planted. Crop yield is high, terrace stability and economic incomes of peasants are improved, the usage rate of the soil in karst region is increased, and the method is especially accepted by peasants in light-potentially rocky desertification environment.

The invention provides an offshore oil-gas subsea pipeline protection device. The device comprises a trapezoidal long frame, bionic waterweeds, a U-shaped pile, rolling assemblies and a cathode protection assembly, the top of the trapezoidal long frame is fixedly connected with the U-shaped pile through a second transverse frame, a pillow plate is arranged in the trapezoidal long frame, a set of guide rails are installed on the pillow plate, and an arch-shaped plate is fixedly connected to the guide rails. The bionic waterweeds are installed on a seabed, first transverse frames are installed at the two sides of the U-shaped pile, and the first transverse frames are fixedly connected with the two side edges of the arch-shaped plate through damping pieces. Pipelines are fixedly connected with each other through a flexible pipe, a pair of rolling assemblies are arranged in the flexible pipe, each rolling assembly comprises a ball and a sleeve, the sleeves are rotatably connected with theflexible pipe through the balls and pipe inner cavities, and the cathode protection assembly is fixed in the pipelines through a mounting plate. The device is suitable for protecting the offshore oil-gas subsea pipelines, scouring of water flow to the pipelines can be effectively reduced, eddy current oscillation is reduced, and chemical corrosion and the heat effect in the pipelines can be resisted.