94results about How to "Controllable risk" patented technology

The invention relates to the field of tunneling shield construction, in particular to a roller guide rail station-passing construction method of a whole shield machine and solving the problems of high difficulty, high cost, long construction peroid and the like of the traditional method. The roller guide rail station-passing construction method comprises the following steps of: machining a shieldforward-moving roller, a forward-moving guide rail, a counter-force device and a rear matched track section; determining whether water stop fabric is arranged in a hole, carrying out shield receivingand welding the forward-moving roller while receiving; moving the whole shield machine forwards, cutting a U-shaped groove plate at a shield connecting bridge off, paving the shield forward-moving guide rail, installing the counter-force device, and enabling the shield to move continuously forwards under the actions of the counter-force device and an oil cylinder; cutting the forward-moving roller off in the process of moving the shield to an originated base forwards, arranging the oil cylinder to the originated base and the side wall of an originated wall, starting the oil cylinder so that the shield body and the originated base translate together along the articulation part of the connecting bridge and the shield body and subsequent associated equipment are in the same straight line, and carrying out second originating. The roller guide rail station-passing construction method has the advantages of simple process, short construction peroid, low cost, risk controllability and the like and has favorable economic and social benefits and wide application range.

The invention relates to the field of tunnel shield construction, in particular to a sealing device for slurry shield starting of a water-rich sand layer and a sealing control method for the starting, and solves the problem that the conventional sealing devices are poor in effect, and high in risk, and water leakage and grout leakage are easy to occur during a shield starting process. Grease distributing valves are additionally arranged on shield tail grease filling pipes; an external steel loop is connected with a tunnel portal steel loop; two wire brushes are arranged in the external steel loop; grease injection holes with gate valves are reserved between the wire brushes; after the shield is assembled on a starting base, grease is smeared on the wire brushes of the external steel loop; a cutter head is pushed to a station space enclosing structure; the grease injection pipes are connected with the grease injection holes reserved in the external steel loop and the grease distributing valves; the grease injection gate valves are opened to enable the grease to be injected between the two wire brushes from the grease injection holes reserved in the external steel loop to fill the interspace; slurry balance is built to conduct shield starting. According to the invention, slurry shield safe starting is realized; slurry shield starting technology is simplified greatly; the technology is simple; the technique is advanced; the practicability is high.

The invention relates to a nuclear power station simulation instrument control system DCS transformation closed-loop verification system and method. The system comprises a simulation server, an operation display terminal and a virtual DCS server which are connected through network communication. The operation display terminal receives the initial condition and verification operation information inputted by the user and transmits the initial condition and verification operation information to the simulation server and displays the simulation result of the simulation server and the DCS verification simulation result of the virtual DCS server. The simulation server simulates the nuclear power station system equipment state and physical parameters according to the initial condition and based on the full scope simulator process system simulation model and outputs the simulation data. The virtual DCS server receives and processes the simulation data and then returns a DCS operation instruction to the simulation server and outputs the DCS simulation result to the operation display terminal to be displayed. Nuclear power station simulation instrument control system DCS transformation closed-loop test verification can be realized so that the major potential problems of digital transformation can be discovered in advance, controllable upgrade implementation risk and controllable construction period can be realized and the requirements of safe and stable operation of the unit can be met.

The invention provides an oil and gas pipe suspension cable crossing simulation analysis method. The method comprises the following steps that an oil and gas pipe suspension cable crossing simulationanalysis model is built; for different stages of the actual construction process, load working condition analysis is carried out, an external load is applied to the oil and gas pipe suspension cable crossing simulation analysis model by utilizing an analysis result, and simulation calculation of each construction stage of the suspension cable crossing structure is carried out; each influence factor in the construction process of the suspension cable spanning structure is comprehensively considered, static analysis and / or modal analysis and / or dynamic analysis is carried out on the analogue simulation calculation result of each construction stage of the suspension cable spanning structure, and displacement change and stress change of each component of the suspension cable spanning structureis obtained; and the simulation calculation result forms a dynamic tower stabilizing load calculation technology so as to guide all components to be dynamically adjusted in the construction process of the suspension cable spanning structure, and a construction scheme is generated. The nonlinear behavior of the suspension cable spanning structure in actual construction can be analyzed, and reference is provided for construction design of the suspension cable spanning structure.

The invention provides a nuclear operation and maintenance robot shaft hole assembling method based on man-machine cooperation, and belongs to the technical field of industrial robots. A slave end mechanical arm is controlled by a master end mechanical arm to rotate a pin in a gap area of the center of a hole; the pin at the tail end of the slave end mechanical arm makes contact with a plane wherethe hole is located, and adjusting is carried out on the pose of the pin through data returned by a torque sensor in real time; and pose information of the pin and information of the torque sensor are acquired, and the pin is pushed to be inserted into the hole by utilizing a depth deterministic strategy gradient network of continuous action, and then nuclear operation and maintenance robot shafthole assembly based on man-machine cooperation is finished. In order to reduce the radiation dosage borne by operation and maintenance personnel and improve the operation and maintenance efficiency,robot intelligence and human intelligence are fully combined through the method; the reliability of the operation process is enhanced by utilizing experience knowledge of people, and it is guaranteedthat the risk is controllable; and meanwhile, the robot autonomously acts in a local area by utilizing an artificial intelligence algorithm.

The invention relates to an online repairing method for screw holes and threads, in particular to the online repairing method for the main screw hole of reactor pressure vessel flanges. The repairingmethod comprises the following steps of 1, defects of the main screw holes and the threads are inspected and repair preparation is carried out; 2, manually repairing is carried out by a scraper; 3, manual slight grinding is carried out by a metallographic abrasive paper; 4, screw tap repairing method is adopted; and 5, online grinding and repairing are adopted. According to the online repairing method, common defects of the main screw holes and the threads are covered, so that fine, efficient and reliable online repairing is realized.

The invention relates to the field of biological medicine, in particular to a codon-optimized blood coagulation factor VIII gene and a construct comprising the codon-optimized blood coagulation factorVIII gene. The codon-optimized blood coagulation factor VIII gene is provided, a GC content in a sequence of the blood coagulation factor VIII gene is at least 54%, a CpG island number is at least 122, and a gene sequence of a B domain in the codon-optimized blood coagulation factor VIII gene is a truncated sequence. The nucleic acid construct is further provided, and the nucleic acid construct comprises the codon-optimized blood coagulation factor VIII gene. The codon-optimized blood coagulation factor VIII gene and the construct comprising the codon-optimized blood coagulation factor VIII gene have the following beneficial effects that the expression quantity of a blood coagulation factor VIII is significantly improved; the activity level of the blood coagulation factor VIII is significantly raised; and a dosage is low, immunoreaction and the immunogenicity are reduced, and risks are relatively controllable.

The invention discloses a dewatering and safe stockpiling integrated system and method for industrial and mineral industry particulate solid waste. The dewatering and safe stockpiling integrated system comprises a front end transporting unit, a rear end transporting unit and a dewatering and stockpiling site. The rear end transporting unit comprises a mixing pipeline with the input end being connected to the front end transporting unit. The dewatering and stockpiling site comprises a water permeable rock-fill dam, a geotextile tube stockpiling body arranged on one side of the water permeable rock-fill dam and a leachate gathering tank arranged on the other side of the water permeable rock-fill dam. A plurality of geotextile tubes are stacked on the geotextile tube stockpiling body in a stack-up mode. Solid waste mud is transported to the geotextile tubes of the geotextile tube stockpiling body through the mixing pipeline, and a leachate guide discharging system is arranged at the bottom of the geotextile tube stockpiling body. According to the dewatering and safe stockpiling integrated system and method, the transporting and disposition cost of the solid waste is low, a large part of waste water can be recovered, the environmental influence is reduced, the stacking site for stacking the capsule-state solid waste is high in safety and stability, and the problems of safety risks such as stacking site side slope unstability, collapse, landslide and debris flow are not prone to occurring.

The invention relates to a bird impact design method for a fan blade, belongs to the technical field of aviation and provides a bird impact design method for a fan blade. The sub-surface fine net structural design is conducted on the blade, elastic deformation of the fan blade due to bird impacts or foreign matter collisions is controlled, the effects of inner structure dislocation energy absorbing and breaking energy absorbing are achieved, and the purpose that the blade is greatly deformed but not fractured is achieved to the maximum degree. Even though the blade is fractured, the fracture position and trend can be controlled through the design method, risk controllability is achieved, and the safety of the fan blade is improved to the maximum degree. Through the inner design, effective control and prediction over blade fracture during bird impacts can be achieved, and the work safety of an aero-engine is improved.