439 results about "Water erosion" patented technology

The invention discloses a fine simulation test device and a fine simulation test method for slope water erosion. The fine simulation test device comprises an underframe provided with trundles and a test soil groove connected with the underframe, the test soil groove is arranged above the underframe, one end of the test soil groove is hinged to one end of the underframe, and a water tank matched with the test soil groove is arranged at the other end of the test soil groove. A hydraulic rod is arranged between the test soil groove and the underframe, an equalization pond is arranged between thetest soil groove and the water tank, the equalization pond is communicated with the water tank through a water conveying pipe, the water conveying pipe and a water pump are arranged on one side of the water tank, a water discharging pipe is communicated with the lower portion of the water tank, a three-dimensional laser scanner is arranged in front of the test soil groove, a railfall device is arranged right above the test soil groove, and a flow collecting opening connected with the test soil groove is arranged at the end of the test soil groove hinged to the underframe. The fine simulation test device and the fine simulation test method for the slope water erosion have the advantages of being capable of controlling slope soil bulk density, vegetation types and cover degree manually, simulating soil water erosion conditions under different site conditions, and studying influences and response theories of all factors on soil water erosion under different underlying surface conditions.

The invention relates to the technical field of revetments and provides a construction method of a cast-in-site planting concrete revetment. The concrete revetment manufactured by utilizing the method has the advantages of high strength, good overall landscape effect, strong gradient adaptability, no water-body pollution, water erosion resistance, larger revetment self-weight, safety and reliability, and a water body can be effectively protected. The construction method comprises the following steps of 1, prefabricating acid nutrient soil; 2, arranging a side slope and pouring a concrete lattice frame; 3, pre-placing a nutrient layer; 4, laying inverted-filtering geotechnical cloth on the nutrient layer; 5, pouring planting concrete; 6 carrying out water-preserving, heat-preserving, fertilizer-preserving and alkalinity-reducing processing on the planting concrete; and 7, finally, uniformly spreading the seeds of greening grass and the nutrient soil onto the surface of the planting concrete to form a planting layer with the thickness of 1.8 to 2.2cm, and covering a non-woven fabric onto the surface of the planting layer for watering, moisture preservation and maintenance until the greening grass covers the whole green area.

The invention discloses a super-high early-strength grouting material for repairing a ballastless track structure of a high speed railway, which is prepared by the following steps of: sequentially adding water, polymer emulsion, a water reducing agent, a rheology accessory agent and an antifoaming agent; adding admixture, cement, an expansion agent, a coagulator and a retarder, and stirring and blending the materials at a high speed. The parts by weight of the ingredients are as follows: 100 parts of superfine cement, 50-150 parts of admixture, 25-50 parts of redispersible emulsion powder, 3-10 parts of polymer emulsion, 5-25 parts of expansion agent, 0.1-1.0 part of carboxylic acid water reducing agent, 0.1-10 parts of coagulator, 0.1-5 parts of retarder, 0.001-0.005 parts of rheology accessory agent, 0.001 part of polyether-siloxane copolymer antifoaming agent and 20-70 parts of water. The material disclosed by the invention has the advantages of low viscosity, super-high early-strength, low cost, fatigue resistance, aging resistance and water erosion resistance, and the like, so that the material can be used for repairing the concrete gaps of ballastless tracks of high speed railways, gaps of cement asphalt mortar filling layers, cracks and damages.

This invention relates to a rock cleavage shearing - seepage coupling test box, the characteristic lay in: box shell includes upper box and lower box, both fitting surface are flat. Inter of upper box and lower box have similar size flute, and two flute together form cavity that can hold rock test piece; Near upper end of left and right wall sheet of lower box have set up water entry and water exit; box shell executed by metal or alloy that has high compressive strength, good water erosion bearing quality. This invention can carry out rock cleavage shearing - seepage coupling test under high infiltration water pressure. because of the designing of sealing device, in the test process water current leakage will not occur when up and down cleavage test piece in conjunction with upper and lower box occurring relative shearing displacement, and still flowing according to predesigned path and mode, so strained condition more fit for nature, data more sincerity, conclusion can serve practical engineering better.

The invention relates to a turbine blade water erosion test device which simulates the blade water erosion caused by the high-speed impact of water drip in a low-pressure cylinder of the turbine through the impact between the high-speed rotating blade and the water drip. A DC motor is used as a prime motor, and the rotary speed is improved through a gear speeder to drive a turntable provided with a test blade to rotate; a vibrator drives a nozzle connected with the water drip to produce the water drip, and the water drip axially moves to impact with a test piece; in addition, the system has also a vacuum-pumping system and a drainage system in order to ensure the normal operation of the test. The test device can study the change relations of deformation action and crack growth condition of the turbine blade materials with various factors under the high-speed impact of liquid drip, and provides the basic test data for deeply knowing the impact mechanism of high-speed liquid and solid and the water erosion protection of the turbine blade.

The invention relates to a test device and a test method, which are used for researching the water erosion simulation of a slope channel system. The system comprises a bottom frame, and a slope runoff area and a channel runoff area which are connected with the bottom frame; one end of the bottom frame is connected with a travel wheel set, and the other end of the bottom frame is provided with a steering wheel set and a travel traction rod which is connected with the steering wheel set; the slope runoff area and the channel runoff area are both formed above the bottom frame; the end of the slope runoff area is hinged with the end of the channel runoff area; the other end of the channel runoff area is hinged with the travel wheel set end of the bottom frame; a channel lifting mechanism for controlling the channel runoff area to lift is arranged between the bottom frame and the channel runoff area; and a slope lifting mechanism for controlling the slope runoff area to lift is arranged between the bottom frame and the slope runoff area. The fine water erosion simulation test device has the advantages of manually tamping soil, transplanting plant, automatically adjusting the channel angles, freely moving the whole equipment, shortening a test period, and accurately simulating the water erosion process of soil under different site conditions.

The invention relates to a water erosion experimental facility with the rotary impact of high-pressure water jet. The facility simulates the blade erosion caused by drops in a steam turbine through the collision between high-speed jet and a rotating test piece. The facility mainly comprises a motor and a motor control cabinet, a gear case, a rotor and a test piece, a high-pressure water pump and nozzle pipelines, etc. While the rotor and the test piece rotate at a high speed, the high-pressure water supplied by the high-pressure water pump can generate high-speed jet through the nozzle. And the jet hits the test piece at a speed of the vector difference between the jet and the test piece, so that hitting speed is greatly improved. Thus, the evaluation of the water erosion resistance of the steam turbine blade material within a short period on an experiment table becomes possible.

Here presented is information pertaining to water erosion management incorporating topography, soil type, and weather statistics. Also presented is a manner of exchanging water allocation credits. A method of dealing with crop treatment compatibility and a system of estimating crop characteristics are also set forth. Finally, a manner for wide-area agricultural monitoring and prediction is discussed.

The invention relates to the field of ecological engineering and in particular relates to a method for rapidly planting vegetation in saline-alkali bare land. The method comprises the steps of harrowing, building a furrow, taking aeolian sandy soil or farmland soil, mixing the aeolian sandy soil with saline-alkali soil, then mixing with seeds of perennial plants, dibbling the seeds into the furrow, and then covering, and finally carrying out pulled-type rolling. The method disclosed by the invention provides a safe site for seed germination, seedling settlement, growth and propagation of the perennial plants, and the perennial plants can quickly grow on the saline-alkali bare land in salinized and alkalized grassland. Thus, the method disclosed by the invention can rapidly increase covering power of vegetation on the grassland, reduce harm of wind erosion and water erosion in the saline-alkali bare land to adjacent grassland and farmland and protect and improve ecological environment; meanwhile, a large area of saline-alkali bare land can be utilized, high-quality forage grass is provided for development of animal husbandry, and higher ecological, economic and social benefits are produced. The method disclosed by the invention has the advantages that operation is easy, efficiency is high, cost is low, is sustainable and easy to popularize, and the like.

A composite material for ecological construction consists of organic polymer, organic biological active material, organic refuse, nutrients for plant growth and slow-release and soil conditioning material. It can be used in semiarid region and desertification soil. It can improve plant growth environment, resist wind and water erosion. It is also cheap and non-toxic.

The invention discloses a composite material for eco-environment construction of plants. The composite material is formed by compounding organic polymers, organic bioactive materials, organic wastes, nutrient elements needed for plant growth, controlled-release and soil-conditioning materials and the like. The composite material can be applied into soil by soil blending or an aqueous solution, has multiple efficacies of supplying nutritions, slowly releasing and balancing nutrition constituents, improving physicochemical properties of soil, holding moisture and resisting draught, restricting salinization or alkalinization, resisting wind erosion and water erosion and the like, achieves dual functions of improving plant growth environments and increasing plant survivability and is particularly suitable for eco-environment construction of plants and husbandry production in western loess semi-aired areas, high-salinization and high-alkalization desertification soil and other loose-structure soil areas in China. The composite material disclosed by the invention has the advantages of optimized functional compounding, no toxicity and harms, low cost, quick effect taking, simpleness and convenience for construction and capabilities of effectively improving desertification soil, providing favorable water and soil conditions for plant growth and improving quality and efficiency of eco-environment engineering construction.

The invention belongs to the laser cladding field, relates to a preparation method for a water erosion resistant coating of a last-stage long blade, and particularly relates to a method for preparing a water erosion resistant coating of a last-stage long blade of a large nuclear turbine. The preparation method for the water erosion resistant coating of the last-stage long blade comprises the following steps of drying alloy powder, clamping a blade on a platform with the blade in a horizontal position; selecting a semiconductor laser; adjusting by a coaxially focused powder feeding system; setting the size of a molten pool; and cladding the water erosion resistant coating by the laser. The preparation method can be used in preparing the water erosion resistant coating of the last-stage long blade of the large nuclear turbine. The hardness distribution of a cladding layer is uniform with an up-down deviation within 10% and the hardness of 500 HV; the thermal impact performance and water erosion resistance of the cladding layer are excellent; the deformation of the last-stage long blade after the laser cladding is small; and profile tolerance meets the processing and manufacturing technological requirements of the long blades by nuclear power.

The invention relates to a phytoremediation technology for soil contaminated by heavy metal, in particular to a method for remediating soil contaminated by cadmium through the heavy metal enriching plant of dandelion. The method for remediating the soil contaminated by heavy metal through the heavy metal enriching plant of dandelion comprises the following steps: dandelion is implanted in the soil containing the cadmium pollutant; a great amount of cadmium in the contaminated oil is absorbed by the root system of dandelion and is transferred to the organs of the above-ground part of dandelion; and the plant grows to have the above-ground part with maximal biomass, the organs of the above-ground part of the plant are removed from the contaminated soil, thereby realizing the aim of removing the cadmium pollutant in the soil. The technology controls the soil contaminated by cadmium through the heavy metal enriching plant of dandelion, and has the advantages of low cost, strong operability, no damage on the physicochemical property of the soil, no induction of secondary pollution, good effects on preventing the wind and water erosion of the contaminated soil, and the like.

The invention relates to a basin-scale water-erosion fine simulation simulation test method which is used to systematically research soil erosion process and mechanism of a small-basin different-landform unit. According to the method, especially, different landforms can be constructed according to test requirements, soil with different particle sizes is used to fill the landforms, the soil bulk density of different-landform positions of the basin is artificially controlled, water-soil conservation measures are laid on different-landform positions (the upper part of a slope surface, the lower part of a slope surface, ditches and the like) of the basin, different rainfall intensity and rainfall processes are controlled, the hydrodynamics characteristics of a water flow at different-landform positions are observed, so that precise simulation of a water and soil loss process of the basin under different site conditions and different rainfall conditions is realized, and influence and response mechanism of various factors on the soil water-erosion process under different underlying surface conditions are researched.

The invention provides a technology for preparing nano microcrystalline enamels, which comprises the following technical steps: melting at high temperature, preparing enamel powders or glaze slurry, and firing the enamels and carrying out in-situ crystallization; and based on common porcelain enamels, introducing a devitrification factor during the preparation of enamel frits by scientific and reasonable composition design so as to the porcelain enamel has the capacity of even and fast devitrification at appropriate temperature. Because the melt and other processing properties for the enamels are slightly influenced, the enamel firing technology system is slightly modified, thus being capable of obviously improving the capacities of the enamels in acid-base resistance, corrosion resistance and hot water erosion resistance. For the nano microcrystalline enamels prepared by the technology which can produce nano microcrystals in situ in a porcelain enamel layer, the acid-base resistance and the corrosion resistance can be more than double and the hot water erosion resistance can be improved by about five folds. The enamels in the invention can be used as lining materials of chemical reaction vessels and liner materials of water heaters and has preferably popularization and application prospects.

The invention discloses a remote real-time monitoring system for soil runoff, belonging to the field of agricultural science. The system comprises a manual simulation rainfall device, a test stand device and a test device, wherein the manual simulation rainfall device comprises a water tank, a safety valve, a constant-pressure pump, a one-way valve, an electromagnetic valve, a flowmeter, a lifting rack and a spray nozzle; the test stand device comprises a table-type test stand, a soil bearing device, a guide hopper, a water container and a filter screen; and the test device comprises a test system and the like. The system disclosed by the invention can conveniently perform monitoring on the rainfall runoff process as well as research on the water erosion mechanism under different gradients, different earth surface conditions and different soil underlying surface conditions, and can realize remote online monitoring on the dynamic phenomenon of soil runoff.

The invention relates to an intelligent waterproof communication crate. The intelligent waterproof communication crate comprises a communication crate body (1), a power module (2), a controlling module (3), a water sensor (4) and at least one electronic control supporting expansion pole (5), wherein the water sensor (4) is arranged on the lower surface of the communication crate body (1); the electronic control supporting expansion poles (5) are arranged below the communication crate body (1). According to the invention, the water sensor (4) is used for detecting whether the downside of the communication crate body (1) is submerged or not, which is regarded as a triggering signal, and the electronic control supporting expansion poles (5) are adopted to work, so that the communication crate body (1) is lifted to prevent communication equipment inside the communication crate body (1) from water erosion and damaging the communication equipment, and the communicant equipment can be effectively guaranteed to work.