88 results about "Deep penetration" patented technology

The invention discloses a permanent magnet synchronous motor iron core welding device, and relates to the technical field of iron core welding, the permanent magnet synchronous motor iron core welding device comprises a rack, a welding platform is arranged in the rack, a welding manipulator is arranged right above the welding platform, and a laser welding gun main body is mounted at the end part of the welding manipulator; an auxiliary mechanism capable of synchronously moving along with the laser welding gun body from bottom to top is installed on the outer surface of the laser welding gun body, and the auxiliary mechanism can enable silicon steel sheet layers in a local area to have instant micro gaps before welding operation so as to promote molten liquid to permeate into a deep layer. And after welding is completed, axial downward pressure is applied to the area so as to compact the welding seam and increase the compactness between the silicon steel sheet layers, local pressure release of the welding area is achieved through a double-layer pressing plate and an annular pressing rod, continuous operation of gap pre-expansion, melt permeation and welding seam compaction is constructed in cooperation with a Y-shaped push rod and a pressing wheel, melt permeation and the compactness between the layers are taken into consideration, and the welding quality is improved. The iron core welding quality is improved.

A 10-kW class deep penetration laser welding method and auxiliary material, and an auxiliary material preparation method. The 10-kW class deep penetration laser welding method comprises: during 10-kW class laser welding, simultaneously feeding a flux into a molten pool as an auxiliary material, to achieve full coverage of the surface of the molten pool.

The invention provides a quantitative detection method and system for corrosion of steel bars in concrete, and belongs to the technical field of nondestructive testing and health monitoring of civil engineering structures. According to the method, an alternating weak magnetic field is applied to a reinforced concrete structure through a controllable magnetic field excitation device; a superconducting quantum interference magnetic sensor array is adopted to collect magnetic field response signals, and a space magnetic field gradient data set is obtained; performing wavelet packet decomposition and feature extraction on the data set to obtain a corrosion feature frequency band signal; based on a magnetic diffusion-corrosion coupling physical model, inversely calculating steel bar section corrosion rate distribution; and generating and outputting a three-dimensional corrosion distribution cloud picture and a quantitative evaluation report. The system comprises a controllable magnetic field excitation device, a superconducting quantum interference magnetic sensor array, a data processing and inversion calculation device and a result output device which are sequentially connected and cooperatively work. According to the invention, nondestructive, accurate and quantitative detection of corrosion of steel bars in concrete is realized, and the method has the advantages of strong deep penetration ability, high sensitivity to micro-corrosion, good field applicability and the like.

The invention relates to an underground engineering fire hazard hazard detection and damage evaluation method, and belongs to the technical field of underground engineering safety monitoring. The method is based on the principle of muon transmission imaging, a three-dimensional monitoring network is constructed by arranging ground and drilling hole detection arrays, data such as muon flux, energy and incident angles are collected, coal rock density distribution is inverted, and a density situation map is generated. A weighted comprehensive discrimination model is established by analyzing carbon content change and combining fault, fracture and permeability characteristics, and a fire abnormal area is identified. Furthermore, damage variables are defined according to density changes before and after combustion, a fire area is divided into a core damage area, a transition damage area and an edge damage area, and quantitative and graded evaluation of the damage degree is achieved. The device has the characteristics of non-invasion, deep penetration and high resolution, is suitable for fire dynamic monitoring and damage evaluation of underground engineering such as coal mines and tunnels, and provides a reliable basis for fire early warning and post-disaster repair.

The invention relates to a laser deep penetration welding method for producing a metallurgical joint of at least two oxide-coated metallic workpieces (1, 2) by means of a laser beam unit (11) which is controlled for laser beam shaping of a laser beam (10) such that a temperature gradient (gradT) is generated in the liquid melt of the weld seam (4') to form a broad-lens-shaped weld seam (4'), which results in a broad-lens-shaped weld seam (4') with a contour angle (α) relative to the joining zone (3). F ) of less than 80 degrees, in particular of less than or equal to 75 degrees and a width-to-depth ratio between 1:0.8 and 1:1.2.

The invention discloses a welding process of a high-strength onboard load training device, which adopts a structural combination of a plurality of layers of steel plates and a high-ductility alloy connecting piece, and utilizes a composite welding device consisting of a welding head, a gas generating ring, a tempering heating ring and a slow cooling gas curtain ring which are coaxially arranged. The synergistic effect of an electric arc heat source and a laser heat source can be achieved in the welding process, a deep penetration weld joint is formed, and sufficient metallurgical bonding of the multi-layer steel plate and an alloy connecting piece is ensured. And in cooperation with annular protective gas, local tempering and slow cooling control, the welding seam structure can be effectively improved, the residual stress can be reduced, cold cracks and fatigue cracks are prevented, and therefore the strength and stability of a welding joint are remarkably improved.

The invention discloses a consumable electrode plasma multifunctional welding gun, a welding system and a welding method, and belongs to the technical field of advanced welding and additive manufacturing. The welding gun is of a coaxial multi-layer integrated structure and is sequentially provided with a welding wire channel, a shielding gas channel, a water-cooling inner plasma contact tube, a hollow tungsten electrode, a plasma gas channel, a water-cooling outer plasma contact tube of an integrated powder feeding channel and an outer shielding gas channel from inside to outside. Coaxial conveying of shielding gas, plasma gas, metal wires and metal powder is achieved, and highly-compressed composite electric arcs can be generated. By adjusting the polarity of the power source, the material conveying mode and the technological parameters, the multiple functions of large-fusion-depth welding, efficient cladding, wire or wire powder collaborative additive manufacturing and high-precision repairing can be achieved through one gun, the problems that in the prior art, the function is single, efficiency is insufficient or cost is high are solved, and the advantages of being high in integration degree, powerful in function and flexible in application are achieved.

The application discloses a water-based inorganic coating for a concrete structure and a preparation method thereof. In one aspect, the application provides a water-based inorganic coating for a concrete structure, which comprises an A component and a B component; the A component comprises the following components in a proportion: modified water glass 20-30 parts, fine filler 8-12 parts, ultra-fine filler 6-10 parts, fluorosilicate 0.5-1 part, Portland cement 50-60 parts, retarding water reducing agent 2-4 parts, and water 25-35 parts; the B component comprises the following components in a proportion: polybutadiene type silane-terminated polyurethane prepolymer 30-40 parts, Portland cement 50-60 parts, nano titanium dioxide 18-24 parts, polycarboxylic acid type water reducing agent 1-1.5 parts, and water 35-45 parts. In another aspect, the application further provides a preparation method of the water-based inorganic coating for a concrete structure. The application has excellent deep penetration crystallization performance, and has strong waterproof performance and anti-permeation performance.

The present disclosure relates to a kind of water deep penetration guide seam fracturing reservoir engineering design methods, comprising: using water deep penetration perforation method, drill open horizontal long hole in the top of thick oil layer, the horizontal long hole is drilled in low water content direction on plane, and drainage channel is formed in the part where water drive oil capacity is weak;The penetration length of the water deep penetration perforation is determined according to the development thickness of oil layer, injection-production connection relationship, injection-production distance, the number of perforation is in the same direction on the top of each subdivision layer blocked by interlayer, and it is 0.2-0.4m away from upper barrier or interlayer;After the water deep penetration perforation, hydraulic fracturing is carried out to form artificial fracture, let the drilled horizontal long hole guide the longitudinal position and horizontal trend of artificial fracture, to improve the flow conductivity again, realize the purpose of "targeting" tapping of remaining oil enrichment site in the cubic of injection-production well positive rhythm oil layer.

The application provides a kind of deep penetration test three-dimensional trajectory test method, after the reduction trajectory of foaming material, the coordinates of each point on the deep penetration trajectory are accurately obtained by image processing method;It should be noted that the foaming material prepared by the present application has certain strength and toughness after solidification, even if it is subjected to impact and wear of concrete block / stone block during target sectioning, the structure will not be damaged, and the three-dimensional model of the trajectory formed by the foaming material can ensure the integrity of the trajectory track after being taken out, the model can keep the original crater morphology and three-dimensional state of the trajectory;As can be seen, the trajectory reduction technology of the present application solves the contradiction between target sectioning randomness and retaining the integrity of the trajectory line, greatly reduces the difficulty of target sectioning, and has the advantages of saving labor and time cost, simple and efficient.

The invention provides a laser welding method for a medium-thick-wall solid rocket engine shell. The laser welding method comprises the following steps that S1, a welding face is pretreated; s2, fixing to form a shell assembly; step S3, hoisting; s4, determining a circular seam program by utilizing an industrial robot demonstrator; and S5, a front end socket welding seam between the front end socket and the combustion chamber shell is welded, and the welding process comprises the following steps that S5.1, laser spot welding is conducted; s5.2, laser oscillation penetration fusion welding is carried out; s5.3, MIG welding is carried out; and S6, a rear end socket welding seam between the rear end socket and the combustion chamber shell is welded. According to the method, the welding process is divided into three processes, the operation difficulty is greatly reduced, the fault tolerance range of the process interval range is larger, and the reliability of batch production is higher; and through a step-by-step welding method, digging and discharging are easy, the production precision is greatly improved, and the risk of reworking is reduced.

The present invention relates to the technical field of welding. Provided are a method and device for ultra-high-power laser-submerged arc hybrid deep penetration welding of thick plates. The hybrid deep penetration welding method specifically comprises: forming a double-Y groove between abutment surfaces of two plates to be welded; in a welding direction, positioning a laser heat source in front of a submerged arc heat source, both being on the same straight line, so as to collectively form a molten pool, wherein the laser heat source is tilted forward relative to the normal direction of the plates, and the submerged arc heat source is tilted backward relative to the plates; during welding, melting a submerged arc welding wire into the molten pool under the combined action of the laser heat source and the submerged arc heat source; and welding a groove on one side, and upon completion thereof, welding a groove on the other side. By means of integrating ultra-high-power laser and submerged arc welding, the present invention can realize efficient and high-quality welding of thick plates with low porosity.

The invention relates to the technical field of immersion liquid processing, in particular to an immersion liquid processing device for transformer production and a use method, and the immersion liquid processing device comprises a sealed immersion liquid cavity, a temperature difference generation assembly, a coil positioning convection assembly, a vacuum auxiliary assembly and a liquid injection and drainage assembly. According to the immersion liquid processing device for transformer production and the using method, the technical path of'temperature difference convection and directional guide 'is adopted, the problems that oil contamination of mechanical assemblies leaks to pollute paint liquid and high-frequency vibration causes coil loosening are fundamentally solved, meanwhile, the industrial pain points that traditional paint liquid is diffused disorderly and deep penetration is insufficient are solved, and the production efficiency is improved. The reliability of immersion liquid processing and the product precision are remarkably improved, disordered cold and hot convection is converted into directional penetrating type flow through accurate guiding of the coil positioning convection assembly, paint liquid can accurately and efficiently permeate into deep gaps of densely-wound coils, and compared with traditional equipment, the immersion liquid uniformity is improved by 30% or above, the immersion liquid time is shortened by 20% or above, and the production efficiency is improved. And the production efficiency and the product percent of pass are greatly improved.

To provide an arc-welding method capable of realizing deep penetration, widening the bead width of a weld bead, and suppressing an increase in spattering.SOLUTION: In an ark-welding method, a welding wire 21 is fed toward a base material 25 at a constant average feeding speed, a pulse current varying in cycles Tp is made to flow in the welding wire 21 on the basis of a first set voltage Vo, and an arc 24 is generated between the welding wire and the base material 25 during a first period To. During a second period Tb, a pulse current is made to flow in the welding wire 21 on the basis of a second set voltage Vb to generate an arc 24 between the wire and the base material 25. The cycle Tp includes a peak current period T2 and a base current period T1. The first period To and the second period Tb respectively include one or more Tp's. The first set voltage Vo is larger than the second set voltage Tb.SELECTED DRAWING: Figure 2

This utility model discloses a non-excavation grouting repair device for dike cracks in water conservancy reinforcement, belonging to the field of dike engineering technology. The device includes a grouting assembly and a scraper assembly. The grouting assembly includes a shell and a grouting head penetrating the middle of the shell. The grouting head is connected to a feeding hose. An electric telescopic rod is installed inside the shell, and the telescopic end of the electric telescopic rod is fixedly connected to a push plate, which is fixedly connected to the grouting head. During grouting, the scraper of this utility model moves closely against the dike crack opening, using mechanical extrusion to expel air from the crack and push the grout to penetrate deeper. The electric telescopic rod drives the reciprocating motion of the elastic pressure plate, further squeezing the grout into the crack opening, effectively solving the problem of hollow areas easily appearing in deep cracks, thereby improving the grout filling efficiency and density, and enhancing the structural stability of the dike.

The invention discloses a deep permeable crystallization type downstream face impervious material and preparation and application thereof, and relates to the technical field of building materials, the impervious material comprises the following components by mass: 5%-7% of a permeable crystallization active master batch, 0.5%-1.5% of a water reducer, 0.05%-0.15% of cellulose ether, and the balance of a mixture of cement and sand; the capillary crystalline active master batch is formed by compounding 85%-95% by mass of an inorganic component and 5%-15% by mass of an organic component. According to the anti-seepage material, through the organic / inorganic synergistic effect, deep penetration and efficient crystallization of active substances in concrete are achieved, so that the material has excellent primary and secondary anti-seepage capacity, high compressive strength and excellent bonding performance, and is particularly suitable for waterproof and anti-seepage of concrete structures such as basements and tunnels in severe backwater pressure environments; the technical problems that a traditional material is shallow in permeation, easy to peel and poor in secondary impermeability are solved.

The utility model relates to the related technical field of evaporators, in particular to a condensing device for a steam type scraper evaporator, which comprises a shell, and connecting limiting mechanisms are arranged between an upper end cover and the shell and between a lower end cover and the shell. According to the condensing device for the steam type scraper evaporator, through the arrangement of the connecting limiting mechanism, when the upper end cover or the lower end cover is installed, a shell is aligned to enable a threaded block to be aligned with a threaded groove, a cover body is rotated to enable the threaded block to be screwed in, and the threaded block extrudes a limiting block when penetrating into the threaded groove; when the threaded block is completely screwed in place, the limiting hole is aligned with the limiting block, the spring pushes the limiting block to be inserted into the limiting hole, and accurate and stable connection is achieved. And then the cover body is reversely rotated to screw out the threaded block, so that the cover body can be easily taken down.

This invention discloses a thin-layer, maintenance-free, non-stick, and waterproof adhesive material for wheels, its preparation method, and its applications. It relates to the technical field of non-emulsified adhesive materials for interlayer bonding. The thin-layer, maintenance-free, non-stick, and waterproof adhesive material comprises the following components by weight percentage: 26-50% base asphalt, 1-3% carboxylated nitrile rubber, 1-3% thermoplastic elastomer, 2-6% petroleum resin, 4-8% bio-based oil, 2-4% filler, and 40-50% organic solvent. The thin-layer, maintenance-free, non-stick, and waterproof adhesive material of this invention features room-temperature application, deep penetration, non-stick properties, high bonding strength, and regeneration capabilities. It can be used as an adhesive material between asphalt layers or between asphalt layers and cement concrete pavement.

This invention provides a residual-temperature assisted multi-heat-source synergistic modulation welding device and method, relating to the fields of laser welding and friction stir welding, aiming to solve the problems of easy forming defects and performance degradation in welding aluminum-lithium alloys. The device outputs a composite heat source through a laser-arc composite heat source system to melt the welding wire and stabilize the molten pool with deep penetration on the front side of the workpiece; a motion system controls the movement of the friction stir heating system; a residual-temperature-airflow synergistic auxiliary temperature control system dynamically adjusts the temperature of the solid phase region of the molten pool; a monitoring and sensing system collects physical field modal data in real time and uploads it to the control system; a flexible tooling system is used to clamp the workpiece with variable curvature; the friction stir heating system applies dynamic shearing and mechanical upsetting forces in the residual high-temperature region on the back side, effectively improving defects such as back-side collapse and burn-through in the weld of the workpiece with variable curvature. The residual-temperature assisted multi-heat-source synergistic modulation welding method is applied to the residual-temperature assisted multi-heat-source synergistic modulation welding device.

The invention discloses a galvanized sheet laser welding method and system, and belongs to the technical field of laser welding. According to the method, an annular light spot laser is adopted for welding, annular light spots comprise an inner-layer center light beam and an outer-layer annular light beam, penetration fusion welding is achieved through the inner-layer high-power-density light beam, and a molten pool is stabilized through the outer-layer low-power-density light beam; and meanwhile, the welding wire is preheated in cooperation with a wire heating device. The system comprises a robot, a laser, an annular light spot optical fiber laser head, a wire heating machine and a wire feeding machine. By optimizing welding parameters, namely, the laser power is 4000-5000W, the welding speed is 100-150mm / s, the wire feeding speed is 8-10m / min, and elliptical swinging is adopted, so that the problems of air holes and splashing caused by zinc steam in the galvanized sheet welding process are effectively solved. According to the method, a traditional pretreatment procedure is omitted, the welding speed is increased to 120 mm / s from 80 mm / s, the drawing force of a connector exceeds 10000 N, the welding quality is guaranteed, meanwhile, the production efficiency is remarkably improved, and the cost is reduced.

This invention provides a high-pressure grouting device and method for deep infiltration channels used in industrial site remediation. The grouting pipe of the high-pressure grouting device is inserted into the stratum, with its top end above ground and its bottom end communicating with the infiltration channel. A spiral conveyor is rotatably mounted inside the grouting pipe, and a sealing component is provided at the edge of the spiral conveyor's blades, abutting against the grouting pipe. A drive device is mounted on the grouting pipe, connected to the spiral conveyor, and the drive device drives the spiral conveyor to rotate. A grout supply device is connected to the top end of the grouting pipe and supplies grout to the grouting pipe. A sealing device is also mounted on the grouting pipe. This invention uses a grouting pipe in conjunction with a spiral conveyor to complete the delivery and injection of grout. Compared to the prior art using high-pressure devices, this method has a simpler structure and is more convenient to use.

The application discloses an austenitic stainless steel welding method and a welded assembly. The welding method comprises the following steps: assembling two welding units: each welding unit has an I-shaped groove and a U-shaped groove; the I-shaped groove is welded by laser deep penetration welding; and the U-shaped groove is welded by laser wire filling welding. By combining laser deep penetration welding and laser wire filling welding, the penetration depth of the austenitic stainless steel reaches more than 50 mm, compared with the submerged-arc welding or gas shielded welding method of the austenitic stainless steel with large thickness. Laser welding can greatly reduce the weld volume, and the heat input of laser welding is far less than that of submerged-arc welding or gas shielded welding, so that the welding deformation can be effectively controlled, the laser weld quality is high, and defects are few.

The invention provides a gas auxiliary device and laser welding equipment and method, and relates to the technical field of laser welding, a flat main body is provided with a first gas channel, a second gas channel, a third gas channel and a fourth gas channel, and functional gas is introduced into the first gas channel, the second gas channel, the third gas channel and the fourth gas channel respectively; a welding bead, a molten pool and a laser light path in laser welding are synergistically protected by various functional gases, wherein the first gas channel is used for protecting and cooling the high-temperature welding bead; the second gas channel ensures that a molten pool area is protected by stable gas, and the third gas channel accurately inhibits plasma plume generated by laser welding; the fourth gas channel can continuously remove metal vapor and dust in a laser optical path; the multi-channel synergistic effect finally solves the problems of protection gas failure, plasma interference and light path pollution in a narrow gap environment, and the stability of the high-power laser penetration fusion welding process and the welding seam forming quality are remarkably improved.

The application provides a deep melting welding processing method of Q460DR low-temperature steel sheet, which comprises the following steps: S1: steel sheet blanking: cutting and shaping the Q460DR steel sheet; S2: pre-welding surface treatment: cleaning the welding groove area of the Q460DR steel sheet; S3: splicing and positioning: butt joining the Q460DR steel sheet into an I-shaped groove, and then spot welding and positioning the Q460DR steel sheet; S4: preheating: preheating the Q460DR steel sheet; S5: welding: preparing the low-temperature-resistant high-strength steel solid welding wire, the deep melting argon arc welding machine and the matched welding gun and the protective gas argon, the welding position is flat welding, the welding process is directly using the deep melting argon arc welding machine, passing the argon gas to protect the two sides of the Q460DR steel sheet, filling the welding wire material during welding, and completing the single-sided welding and double-sided forming to obtain a welded test piece. The application can realize single-pass welding penetration, single-sided welding and double-sided forming, and the cumulative heat input is small.

The invention relates to the technical field of intelligent welding systems, and discloses laser welding equipment based on automobile part machining, which comprises a laser emitting mechanism, a dimming mechanism, a look-ahead recognition mechanism, a dynamic distance adjusting mechanism and a central processing module, the laser emitting mechanism adopts a main laser beam to execute deep penetration welding, and sub laser beams in an annular array revolve around the laser emitting mechanism; a light adjusting mechanism adjusts the angle of a sub-laser beam through a reflection galvanometer, a dynamic distance adjusting mechanism adjusts and identifies the welding distance in real time, and a cooperative control module in a central processing module is used for controlling the welding speed through a speed prediction query unit, a real-time dynamic distance matching unit, a defect instant response unit and a precise cooperative execution unit. When the defect is identified, the dynamic distance adjusting mechanism adjusts the distance in advance, so that the light adjusting mechanism completes deflection when laser reaches a defect point, zero-delay energy compensation is achieved, and through time-space synchronous control, the fusion depth and the forming quality are considered, and the self-adaptive capacity to a welding seam and the welding quality are remarkably improved.

The application relates to the technical field of building structure reinforcement, and discloses a construction method for reinforcing a brick-concrete structure by using carbon fiber and outer steel plates in cooperation, which comprises the following steps: performing interface pretreatment on a base material and a steel plate; mixing an A component containing epoxy resin and a B component containing a ketimine latent curing agent, and coating the mixture on a bonding surface; adhering the brick-concrete base material, carbon fiber cloth and the outer steel plate, applying pressure and standing still to make the glue solution secrete and penetrate inwards under capillary negative pressure; heating the outer steel plate by using an electromagnetic induction device to trigger cross-linking locking of a rigid network in a superficial layer; removing the device and curing, so that a deep penetration phase is hydrolyzed and solidified by using pore water of the base material. The gradient cross-linking network with decreasing rigidity from outside to inside is constructed in situ in the base material, free water which hinders bonding is consumed, interface stress concentration is relieved, and brittle peeling damage of the reinforcing layer is avoided.

The application discloses a telescopic cyclone interlocking intelligent grouting device and a grouting fire extinguishing system, and relates to the technical field of underground grouting. The three shunt oil channels in the pressure integration module divide the grouting pressure P into three paths P1, P2 and P3, which respectively drive the locking unit and the sealing unit to form a function coupling link, and any unit failure will simultaneously cause the whole machine to be unable to establish working pressure and complete mode switching; the device adopts a coaxial sleeve pipe double-liquid distribution structure, the inner pipe is provided with a tail exposed adjusting section, and the telescopic switching of the direct current deep grouting mode and the cyclone diffusion mode can be realized without stopping grouting; the inner pipe is provided with a Laval nozzle and a cyclone diffusion section at the front end, and deep penetration and global diffusion are considered; the three-level interlocking anti-failure mechanism driven by pressure is introduced into the goaf grouting device for the first time, and the essential safety of the goaf grouting fire extinguishing in the coal mine is greatly improved; and the problem of small solidification and diffusion range of the existing goaf double-liquid sleeve grouting nozzle mode is solved.

The present application belongs to the field of material processing and manufacturing, and relates to an electron beam welding method for a special-shaped angle double-T type net size component. The present application adopts an electron beam deep penetration welding mode, controls the penetration of a welding bead by additionally arranging a backing plate at the back of the welding bead, utilizes the decrease of the density of the material itself after the material changes from a forged state to a welded state before and after welding to realize the increase of the volume of the material at the welding bead, so as to compensate for the material loss at the welding edge and inhibit the welding edge; according to the manufacturing requirements, the clamping points of the welding tool are designed at the positions of the components with assembly relationship, the deformation of the clamping point positions in the welding process is controlled, a reasonable welding sequence is designed, and the welding deformation is controlled; for the oversized components, an inclined welding mode is adopted, the spatial position of the welding bead is controlled by adjusting the inclination angle of the component, the force balance of the welding pool is realized, and the stability of the welding pool is improved.

The present disclosure relates to a kind of low permeability oil reservoir reservoir under- injection well with ultra-high pressure hydraulic deep penetration perforating device and method, can realize fixed point, azimuthal perforation, hole depth is 4-5m, hole diameter is 1.2cm, can effectively break through near wellbore pollution zone, increase drainage area, simultaneously, according to different layer, carry out individualized hole distribution, carry out full well effective plugging for under-injection well, reach the purpose of integrated plugging of targeted plugging, deep penetration, separate layer water control, input-output ratio reaches 1:2 or more;The present application process has strong applicability, avoids the shortcomings of conventional acidification, fracturing, plugging measures such as hole repair, also improves the technical height of conventional hydraulic perforation, the efficiency is improved by more than 3 times in applicable depth, super-penetration, super-time effect, can greatly reduce the injection pressure of under-injection well, improve water injection, realize effective plugging, provide technical support for peripheral low permeability reservoir under-injection well plugging.

The application discloses a civil engineering crack repairing and reinforcing method, which comprises a reinforcing structure, specifically comprises a surface forming structure recessed on the surface of a crack area, an accommodating cavity formed in the surface forming structure and communicated with the crack, a filling and bonding structure formed by filling a mixed slurry based on epoxy resin in the crack and the cavity and solidifying the mixed slurry, a fiber composite material structure reinforcing layer fixed on the surface of the forming structure and an original structure through a homologous adhesive layer, and an external protection structure arranged outside the reinforcing layer. The construction method comprises the following steps: forming the surface forming structure through grooving and joint cleaning; injecting a specially-made mixed slurry based on epoxy resin to form the filling and bonding structure with deep penetration and surface bearing functions; brushing a homologous adhesive and pasting the fiber reinforcing layer; and finally constructing an external protection layer. Through the multi-level collaborative design, the application solves the problems of incomplete repairing, easy interface peeling and poor durability in the traditional method, and realizes the radical repairing of the crack and the long-acting improvement of the structure performance.