10 results about "Water layer" patented technology

The invention provides a method for manufacturing a cushion pad layer of a rock protective shed by utilizing waste tyres, comprising the following steps: designing the specifications and flexibility of the cushion pad layer according to the major structure and protection requirements of the rock protective shed and determining the construction conditions; constructing a water-resisting layer, a shed top inner wall, a shed top outer side wall, a shed top end wall, a drainage blind ditch and drain holes on the shed top of the rock protective shed, embedding tyre fixing pieces, and arranging the waste tyres or tyre cages on the shed top in a layered mode; connecting adjacent waste tyres or tyre cages by utilizing tyre connecting pieces at predetermined positions, and utilizing the typre fixing pieces to connect the waste tyres or tyre cages at the boundary of the cushion pad layer respectively with the shed top inner wall, the shed top outer wall and the shed top end wall; filling rubber soil formed by mixing waste rubber particles with sandy soil in a certain proportion into gaps of the waste tyres so that the designed compactness of the cushion pad layer is reached; laying the cushion pad layer until reaching the designed height and gradient, covering an artificial fillstratum formed by mixing macadam and the sandy soil on the surface of the cushion pad layer, and constructing an intercepting ditch and a drainage open trench on the surface of the cushion pad layer; and in terms of the rock protective shed with larger length, constructing the cushion pad layer in a segmental mode, and cultivating plants suitable for growing locally on the surface of the cushion pad layer. The method provided by the invention ensures that the cushion pad layer of the rock protective shed has high-efficiency buffering effect, and the national strategic goal of recycling wastes can be realized by consuming a large quantity of the waste tyres.

The invention discloses a straw returning to field-flooding treatment method for weed control of pepper fields. The method includes the following steps: adding straw into the fields before transplanting of pepper seedlings, ploughing prior to waterflooding for 15-45d, and transplanting the pepper seedlings after draining and drying. The straw is conventional crops, preferably, bean plant straw is selected, and the preferable add amount is 500-2000kg/mu; the waterflooding mode includes that the peripheries of field pieces are ridged for water storage, the water layer thickness is kept to be 0.5-2cm, and waterflooding lasts for 20-30d. The method has the advantages of being low in cost, simple to operate, ecological, safe, good in weed control effect, extremely obvious in effect in the competition aspects such as weed control of pepper fields and reduction of water-fertilizer resources, and outstanding in achievements in the preliminary stage of pepper seedling transplanting.

The invention relates to a method for performing weight analysis on main control factors of logging parameters in a water-oil-gas reservoir. The method is characterized by comprising the following steps: 1, collecting and sorting various characteristic parameters measured by each single technology in geochemical logging, collecting oil testing conclusions corresponding to each group of characteristic parameters, and then cleaning and verifying integrated data; 2, performing standardized processing; 3, writing a ReliefF characteristic selecting program by using Matlab software, and establishinga ReliefF algorithm model for geochemical logging measurement analysis; 4, inputting standardized data into the ReliefF algorithm model, and calculating weight values of the various characteristic parameters measured by the single technology by using the RelefF algorithm model; 5, setting thresholds, screening characteristic subsets, and extracting geochemical logging sensitive parameters. The method and a gray correlation analysis method have different emphases; by the method, the defects of the gray correlation analysis method in the weight analysis are overcome; the method belongs to supervised learning.

The invention belongs to the technical field of fishing tackles and relates to an all-water-layer fish luring casting hook string. The all-water-layer fish luring casting hook string comprises a mainthread, ring-shaped connectors, a lead weight, branch threads, lure balls, thread clamps, hook threads and fishing hooks; both ends of the main thread are provided with the connectors; one end of thelead weight is hung on the connector at one end of the main thread; one end of at least one branch thread is connected via a connecting point with the main thread, the other end of the branch thread is connected with the corresponding lure ball, and the middle section of the branch thread is provided with the thread clamp; every lure ball is composed of an air cavity and a lure cavity for fillinglures, the volume of the air cavity can be adjusted to adjust the buoyancy of the lure ball, and a lure cavity cover is provided with at least two fish luring holes capable of releasing the lures andapplicable to plugging the fishing hooks; every thread clamp is provided with at least two second wire tying holes. Compared with the prior art, the all-water-layer fish luring casting hook string ishigher in fish luring and capturing rate and can be applied to bottom fishing or floating fishing.

The invention discloses a method for preparing N,N-diethyl-3-pyridine carboxamide. The method comprises the following steps: adding nicotinic acid and dichloromethane into a reaction bottle and dropwise adding oxalyl chloride at the temperature of 0 DEG C; after oxalyl chloride is added dropwise, stirring and reacting at the temperature of 0 DEG C for 0.5-1 hour and reacting at room temperature for 4-6 hours; after the reaction is ended, dropwise adding a sodium hydroxide solution for regulating the pH value of the reaction solution to 7, slowly dropwise adding diethylamine at the temperature of 5 DEG C below zero to 10 DEG C; after diethylamine is added dropwise, reacting at the room temperature for 6-8 hours; after the reaction is finished, adding a sodium carbonate solution, stirring, standing for layering, removing the lower water layer, drying the organic layer, thereby obtaining a crude product of N,N-diethyl-3-pyridine carboxamide; adding the crude product of N,N-diethyl-3-pyridine carboxamide into dichloromethane, discoloring, oxidizing, removing dichloromethane, performing reduced-pressure distillation, thereby obtaining the finished product of N,N-diethyl-3-pyridine carboxamide. The method is low in equipment requirement, slight in environmental pollution and low in danger coefficient and is a synthesis method which is environment-friendly and very suitable for industrial production.

The invention discloses a super-large section hollow split conductor-type water-blocking control cable for a train. A hollow layer is arranged at the center of the cable; a single conductor single-wire layer is arranged outside the hollow layer; multiple corrugated conductor strand blocks are arranged outside the conductor single-wire layer and a corrugated water-blocking layer is arranged outside each corrugated conductor strand block; water-blocking filling strips are arranged in gaps between the corrugated water-blocking layers; and a polyester tape, a braided tinned copper wire shielding layer, a non-alkali glass fiber tape and a flame-retardant polyvinyl chloride outer sheath are sequentially arranged outside the corrugated water-blocking layers. The control cable disclosed by the invention has the functions that the production technology difficulty is reduced, the characteristic requirements of tools, molds and equipment are low, the structure is stable, the skin effect is low, the carrying capacity is high, the water-blocking property is good, and the corrosion resistance, the oxidation resistance, the high temperature resistance, the oil control property and the corrosion resistance are good.