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165 results about "Damage control" patented technology

In navies and the maritime industry, damage control is the emergency control of situations that may cause the sinking of a watercraft.

Flooding damage control method for water-diversion fracture main channels of drill-hole-grouting plugged overburden rock

The invention discloses a flooding damage control method for water-diversion fracture main channels of drill-hole-grouting plugged overburden rock. The method comprises the steps: collecting surface-drilling columnar data of all coal mining areas according to development characteristics of altitude of water-diversion fractured zones of overburden rock mined under specific mining conditions, determining stratum positions of all key strata in the overburden rock by adopting a key stratum position distinguishing method, then, determining development altitude of a water-diversion fractured zone of each area and areas of distribution of communicating strata and water-bearing strata of each area by an overburden rock water-diversion fractured zone altitude prediction method, finally, laying out the range of distribution of the water-diversion fracture main channels in areas of the communicating water-bearing strata of the water-diversion fractured zones. and determining a grouting drilling type and drilling construction parameters according to borehole tunnel positions, coal bed cover depth and ground drill distribution conditions; after drilling construction is completed, pumping slurry to areas of the water-diversion fracture main channels so as to plug water-diversion fracture channels. The flooding damage control method for the water-diversion fracture main channels of the drill-hole-grouting plugged overburden rock, disclosed by the invention, is determined, can adapt to different mining conditions and can provide a guarantee for water resource protection, flooding damage control and the like of coal mining of mining areas, the use method is reliable, and the practicability is high.
Owner:CHINA UNIV OF MINING & TECH

High-entropy alloy gradient stress modification technology

InactiveCN105543749AUniform and excellent tissue performanceEasy to useFine structureHigh entropy alloys
The invention relates to a gradient stress plasticity modification method which specially aims at damage control and fine structure regulation of high-entropy alloy material characteristics. The purpose of the method is to solve the problems that a high-entropy alloy casting state structure is mainly composed of bulky pine-tree crystals, and the comprehensive mechanical property of the high-entropy alloy casting state structure is poor. A preparation method mainly comprises the steps that a high-entropy alloy ingot is prepared; homogenization heat treatment, analogue simulation and canned forging are conducted; and a high-entropy alloy ingot blank is obtained. When the high-entropy alloy ingot is processed, preset variable cross-section canning is mainly adopted, the stress state of the interior of a high-entropy alloy material in the process is effectively controlled, and the gradient three-way compressive stress combined with deformation characteristics is formed. By means of the gradient stress plasticity modification method, initiation and propagation of microcracks induced by lattice distortion can be effectively inhibited finally, crystalline grains are refined, the comprehensive mechanical property is improved, and effective modification of the high-entropy alloy is achieved.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY

Novel earthquake damage control system for thin-wall hollow pier

The invention discloses a novel earthquake damage control system for a thin-wall hollow pier. The novel earthquake damage control system comprises a pier base, a thin-wall hollow pier, high-tenacity fiber-enhanced cement-based composite material expanded sections, an unbonded prestressed tendon and steel energy consumption elements, wherein the thin-wall hollow pier is arranged on the upper end surface of the pier base, so that the torsional strength and the energy-dissipating capacity of the thin-wall pier are improved. The high-tenacity fiber-enhanced cement-based composite material expanded sections are arranged on the inner side and the outer side of the lower part of thin-wall hollow pier; a series of steel energy consumption elements are arranged in the thin-wall hollow pier along the pier height; the lower part of the unbonded prestressed tendon is anchored on the pier base; and the upper part of the unbonded prestressed tendon is anchored at the center of the first steel energy consumption element from bottom to top. By virtue of the unbonded prestressed tendon, the self-resetting capacity of the pier after the earthquake is provided; and the crack width of the pier after the earthquake is reduced. By virtue of the high-tenacity fiber-enhanced cement-based composite material expanded sections, the axis-compression ratio of the bottom section of the thin-wall hollow pier is reduced; the shear-bearing capacity and the anti-bending capacity of the thin-wall hollow pier are increased; and the steel energy consumption elements can be arranged as rapid exchange components, so that the repairability after the earthquake is increased.
Owner:DALIAN MARITIME UNIVERSITY

Permanent magnet tuning mass damping device used for bridge expansion joint damage control

The invention discloses a permanent magnet tuning mass damping device used for bridge expansion joint damage control. The permanent magnet tuning mass damping device used for bridge expansion joint damage control comprises a mass block, permanent magnets which are distributed on the inner side and the outer side of the mass block and are covered with graphene coatings, an inner copper plate, an outer copper plate and a plurality of springs; the positions of the inner copper plate and the outer copper plate are fixed, the mass block is suspended on an upper fixed plate of the device through the springs, and when a box beam horizontally vibrates, the mass block swings, and the inner copper plate cuts a magnetic induction line generated by the permanent magnet on the inner side of the mass block; when the box beam vertically vibrates, the mass block vertically moves, the outer copper plate cuts a magnetic induction line generated by the permanent magnet on the outer side, and vibration energy is dissipated through the resistance heat effect of the copper plates. The device is simple in structure and convenient to mount, the defect that oil leakage appears in a traditional viscous fluid damping device is overcome, the service life of the damping device is greatly prolonged, the device damping efficiency is improved, in addition, the damping device can control beam end horizontal and vertical displacement at the same time, the expansion joint distorted destruction probability caused by the beam end corners is greatly reduced, and generation and development of the expansion joint damage are controlled.
Owner:SOUTHEAST UNIV

Energy consumption steel column system with replaceable hysteretic dampers

ActiveCN105735503AReduce deformation concentrationReduce stiffnessShock proofingEngineeringSteel columns
Disclosed is an energy consumption steel column system with replaceable hysteretic dampers. An energy consumption column comprises two column limbs, rigid chain rods, the multiple sets of hysteretic dampers, connection bolts and hinged support seats. The column limbs are connected through the rigid chain rods. The column limbs of the energy consumption column are connected with the hysteretic dampers through bolts. The energy consumption column penetrates through a full-height or most floors and is connected with a frame beam in a hinged mode. The bottoms of the column limbs are connected with foundations through the hinged support seats. During site construction, the energy consumption column is buried in a wall body in a planar mode. The energy consumption steel column system has the beneficial effects that the two column limbs are combined to act and provide large resistant-lateral rigidity and bearing capacity and serve as an integral type key component to reduce deformation concentration of the structural floors effectively, and thus structural damage control is achieved. The rigidity of the hysteretic dampers is far smaller than that of the column limbs, so that flexural yielding occurs when lateral deformation of the column limbs is small, and seismic energy is consumed and dispersed. The hysteretic dampers are prospective structural damage parts and connected through bolts, and can be replaced conveniently after being damaged in an earthquake. The energy consumption column is a factory prefabricated component and is connected through the bolts on a site, the construction speed is high, and energy conservation and environment protection are achieved.
Owner:TONGJI UNIV

Test device and method for studying erosion damage under pipe bag dam joint breakage condition

The invention discloses a test device and a test method for studying erosion damage under the condition that joints between bags of a pipe bag dam are broken. Water flow states such as stable unidirectional water flow, reciprocating water flow and wavy water flow are provided for a pipeline sandbox system through a water flow control system, the hydraulic boundary condition of a pipeline side wall breakage is simulated, and water flow related information and sand particle related information in a test process are acquired by an information acquisition system, so that the simulation of the erosion damage process generated under the conditions that the joint pipelines of the pipe bag dam are broken under the action of different water flows is completed. According to the test device and method provided by the invention, the rule of erosion damage under the condition that joints of the pipe bag dam are broken is revealed from the macroscopic aspect, the dynamic change characteristics of a sand body structure can be observed from the mesoscopic point of view, and an erosion damage mechanism under the condition that the joint pipelines of the pipe bag dam are broken is revealed and a distinguishing criterion and method of erosion damage are summarized by establishing a relation between water flow and macroscopic and mesoscopic variables of particles and phenomena so as to seek damage control measures.
Owner:HOHAI UNIV

Task-driven ship damage control conversational training simulation system

The invention discloses a task-driven ship damage control conversational training simulation system. The task-driven ship damage control conversational training simulation system comprises an expert knowledge base module used for storing expert knowledge of ship damage control training tasks, a task selection module used for selecting training tasks, an expert problem generation module used for generating expert problem texts and problem prompt information, a voice synthesis module used for converting the expert problem texts into audio signals, a voice recognition module used for receiving an answer audio signal and recognizing as natural language, a natural language comprehension module used for converting the natural language into answer text information, an answer judging module used for judging answer accuracy, and an expert dialog management module used for problem switching prompting. The task-driven ship damage control conversational training simulation system enables trainees and an expert system to complete damage control full-flow simulation training in a voice chat manner, can correct and prompt users of incorrect or missed control passwords, is strong in immersion, and can display complicated control links to truly reflect the real damage control process.
Owner:NAVAL UNIV OF ENG PLA
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