12results about How to "Simple implementation steps" patented technology

The invention provides a soft rock roadway bottom plate reinforcing method. The soft rock roadway bottom plate reinforcing method comprises the following steps that S1, a bottom plate of a roadway is trimmed; s2, a reinforcing mesh is laid on the first concrete layer; anchor rods and / or anchor cables are driven to the bottom plate at intervals on the first net layer in the extending direction of the roadway; s3, grouting is conducted in the holes where the anchor rods and / or the anchor cables are located so that anchoring and fixing can be achieved; then, grouting is conducted on the first net layer; s4, a reinforcing mesh is laid on the second concrete layer, then grouting is conducted on the second mesh layer, a third concrete layer is formed through solidification, and the part, facing the second mesh layer, of the third concrete layer is of a downwards-protruding arch structure; by means of the method, the bottom plate of the roadway is stabilized and reinforced, the supporting and reinforcing strength of the bottom plate is higher, the three concrete layers have certain elastic deformation capacity, damage, cracks and failure caused by damage to the surface of the bottom plate of the roadway are avoided, and long-term stable work of the roadway is guaranteed.

The invention discloses a quantitative throwing tool and method for a methane in-situ burning explosion fracturing combustion improver. The throwing tool comprises an inner barrel, a piston B and an outer barrel, the center of the upper end of the inner cylinder is fixedly connected with an air inlet pipeline B, and the bottom is provided with an inner cylinder bottom plate; a spraying hole is formed in the center area of the inner cylinder bottom plate, and a constant pressure plug is installed in the spraying hole. The piston B is assembled in the inner barrel; a plurality of perforations B are formed in the barrel body of the outer barrel, and an outer barrel bottom plate is arranged at the bottom of the outer barrel; the outer cylinder coaxially sleeves the inner cylinder, and the upper end of the outer cylinder is fixedly connected with the upper end of the inner cylinder. The method comprises the steps of installing the bridge plug in the shaft; the putting tool is put down to the position where the reservoir is located through a shaft by using a coiled tubing; a sealed putting section is formed at the position where the putting tool is located through the packer and the bridge plug; and the piston moves downwards until the combustion improver is completely filled into the sealed feeding section. According to the tool and the method, the pre-stored combustion improver can be conveniently and quantitatively put in a specific position.

The invention belongs to the technical field of traditional Chinese medicine seedling in-vitro rapid propagation biology, and particularly relates to a cynanchum glaucescens tissue culture seedling and cultivation method and application thereof, and the method comprises the following steps: (1) performing induced budding culture on a cynanchum glaucescens explant to obtain cynanchum glaucescens bud; (2) performing rooting culture on the cynanchum glaucescens buds to obtain rooted cynanchum glaucescens seedlings; and (3) planting the cynanchum glaucescens seedlings in a water culture manner. The two kinds of cynanchum glaucescens explants adopted by the method can be subjected to 100% induction to obtain cynanchum glaucescens latent buds to obtain regenerated plants, an efficient and stable tissue culture system is successfully established, the tissue culture breeding period is shortened to 40 d, and favorable conditions are created for industrial production of excellent cynanchum glaucescens seedlings. The method has the advantages of fast propagation, no limitation of seasons, simple and feasible implementation steps and very obvious effect.

This invention provides a method for measuring the radiation of a display field, enabling the measurement of hyperspectral information of a display screen under test. Specifically, the method includes: S1: controlling the display screen under test to display a first set of images, and using the spectral measurement device to obtain the spectral power distribution of region A of the display screen under test under the corresponding image; S2: selecting two or more specific filters based on the spectral power distribution of region A obtained in step S1; S3: controlling the display screen under test to display a second set of images, sequentially inserting the filters selected in step S2 into the optical path, and the light from region B of the display screen under test being received by an area array sensor through an imaging lens and the filters; S4: calculating the spectral power distribution of each position point in region B of the display screen under test when displaying the second set of images, based on the pixel response value of the area array sensor in step S3 and the spectral power distribution of region A of the display screen under test in step S1.

The invention belongs to the field of animal husbandry and veterinary medicine, and particularly relates to a method for increasing the content of melatonin in pig blood. According to the method, the content of melatonin in blood of pigs can be increased by applying tryptophan or tryptophan salt to the pigs.

This invention belongs to the technical field of nuclear power plant reactor pressure vessel maintenance, specifically relating to a device and method for disassembling and assembling the main nut of a reactor pressure vessel. The device includes: a support sleeve, a locking ring, inserts, and lifting hooks. Several lifting hooks are evenly connected along the lower outer periphery of the support sleeve, and these hooks can open and close relative to the support sleeve. The bottom of each lifting hook has an inwardly facing protrusion for hooking the main nut or a main nut washer. Several inserts are evenly connected to the bottom of the support sleeve, the shape of which matches the U-shaped groove on the main nut, for applying torque to the main nut during rotation. The locking ring is sleeved around the outer periphery of the lifting hooks for fixing them. This invention has a simple structure and is easy to operate, effectively improving work efficiency while ensuring that the lifting hooks will not open or close accidentally during operation, greatly reducing operational risks.

A method for strengthening methane in-situ combustion fracturing, liquid carbon dioxide is pressurized and heated to form supercritical carbon dioxide, which is then sent into the fracturing channel to form a complex fracture network around the fracturing channel; mixed fracturing fluid formed by mixing supercritical carbon dioxide and fly ash is injected into the well bottom; combustion-supporting agent is injected into the wellbore and mixed with the mixed fracturing fluid at the well bottom to enter the complex fracture network together, so that a multiphase mixed fluid is formed in the complex fracture network; the annulus valve is closed to promote mineralization reaction of supercritical carbon dioxide and fly ash under the temperature and pressure conditions of the reservoir, and to form high-strength minerals; the mineralization reaction is used to promote the desorption of methane in the reservoir and into the complex fracture network, so that methane-combustion-supporting agent mixed gas is formed in the complex fracture network; the combustion process is used to promote the dust cloud formed by the mixing of fly ash and gas in the complex fracture network, to strengthen the effect of methane in-situ combustion; and the fracturing reconstruction of all layers is completed. The fracturing effect of the method is ideal.

The invention discloses a power distribution droop control method and a power distribution droop control system for multiple parallel static var generators, which are characterized in that under the control method of an original active power filter, each harmonic component of power grid voltage is added into an instruction value of a current control inner loop of the active power filter through a band-pass filter, so that the phenomenon of harmonic compensation resonance is inhibited. And aiming at a nonlinear load, the harmonic compensation effect can be better realized, and the overall stability of the system is improved. Meanwhile, a simulation model of the active power filter applied to compensation of nonlinear load harmonic waves is established, simulation verification is performed on the proposed control method and related algorithms, and correctness, practicability and reliability of the method are proved. The system is good in stability, low in implementation cost, simple and efficient in implementation structure, wide in applicability, capable of adapting to various complex power grid environments and relatively practical in engineering application value.

The invention discloses a water-based graphene epoxy zinc-rich primer and a preparation method of a composite coating of the water-based graphene epoxy zinc-rich primer, the composite coating system is a double-coating system, the bottom coating is the water-based graphene epoxy zinc-rich primer, and the finish paint is water-based acrylic polyurethane finish paint. According to the water-based graphene epoxy zinc-rich primer, graphene is evenly dispersed in a coating, the mechanical performance and the corrosion resistance of the coating are effectively improved, the coating film thickness of a designed water-based graphene double-coating composite system is reduced by 36% compared with a traditional three-coating corrosion-resistant system, and the water-based graphene epoxy zinc-rich primer has the advantages of being good in corrosion resistance, good in corrosion resistance and the like. The graphene double-coating anti-corrosion coating greatly simplifies the anti-corrosion coating process and saves the coating production and coating cost under the condition that the service life of the anti-corrosion coating is not shortened, and the graphene double-coating anti-corrosion coating has good economic benefits.

The invention relates to the technical field of aerodynamic tests, in particular to a wind tunnel test integration method based on deep reinforcement learning. The method comprises the following steps: firstly, integrating an equipment communication protocol commonly used in a wind tunnel test into a unified adapter through Python coding, and realizing seamless communication and data interaction with equipment through a standardized write-in and read interface; secondly, the method integrates various code libraries of a deep reinforcement learning technology, and supports a user to freely call various deep reinforcement learning algorithms including PPO, SAC and TD3 and corresponding optimization functions; and finally, through a standard gym environment interface, smooth interaction between the adapter and the deep reinforcement learning algorithm is ensured, and real-time data transmission and closed-loop control among the actuator, the sensor, the controller and the DRL algorithm are realized. Through the method, automatic control and parameter optimization in the wind tunnel test are further improved, and the experiment efficiency and the system performance are enhanced.

The invention discloses a capacitor voltage transformer fault identification method and system, and belongs to the technical field of power equipment monitoring. The method comprises the following steps: firstly, constructing a CVT broadband equivalent model containing distribution parameters and an n-type transformer topology; then extracting a composite characteristic parameter set fusing the broadband resonance characteristic and the power frequency electrical characteristic; establishing a mapping relation among the fault type, the damage depth and the characteristic parameters through simulation; and finally realizing non-intrusive accurate identification of the fault type and the damage depth of the CVT based on the mapping relation. According to the invention, through multi-dimensional feature fusion, the fault classification precision and the early fault detection capability are significantly improved, and the problems of operation risk and low efficiency of a traditional power failure test are avoided at the same time.