26results about How to "Settlement inhibition" patented technology

The invention discloses a shallow-buried tunnel excavation and primary support construction method. The method comprises the following steps that excavation and masonry of a top intercepting ditch of a tunnel and a tunnel opening drainage project are carried out; excavating earth and stone at the hole, and performing temporary protection on a side slope and a hole forming face; constructing an entrance hole-entering auxiliary measure; excavating a hole body; primarily supporting the tunnel body; constructing a pipe shed on an upward slope of an exit edge; performing inverted arch and backfill construction; tunnel body waterproof and drainage construction; performing open cut tunnel molded lining construction and tunnel portal construction; carrying out secondary lining; and pavement in the tunnel. The construction method has the advantages that the new Austrian method principle is adopted, the tunnel is divided into the left part and the right part to be excavated in the construction process, three-part layered excavation, primary support construction and mid-partition wall temporary support construction are adopted on one side of the tunnel, then the other side of the tunnel is excavated by steps, and the corresponding primary support construction method is carried out. Large-section tunnel construction is divided into small-section cavern construction through the mid-partition wall method, the early construction time of surrounding rock excavation is shortened, and therefore the stress change of surrounding rock excavation is stopped, and safe tunnel construction is facilitated.

The application discloses a high-stability electrorheological fluid based on a non-ionic eutectic solvent and a preparation method thereof, and belongs to the field of electrorheological fluid materials. The electrorheological fluid is prepared by using a non-ionic eutectic solvent as a carrier liquid and titanium dioxide micro-nanoparticles as a dispersed phase. The mass fraction of the non-ionic eutectic solvent is 70-90 wt%, and the mass fraction of the titanium dioxide micro-nanoparticles is 10-30 wt%. The non-ionic eutectic solvent is formed by hydrogen bond combination of a hydrogen bond donor and a hydrogen bond acceptor. The preparation method comprises the following steps: heating and stirring the hydrogen bond donor and the hydrogen bond acceptor according to a preset molar ratio to prepare the non-ionic eutectic solvent, then adding 10-30 wt% of dry titanium dioxide micro-nanoparticles, and performing ultrasonic dispersion and high-speed vortex treatment to obtain the electrorheological fluid. The molar ratio of the components in the non-ionic eutectic solvent can be adjusted to flexibly control the viscosity and polarization response capacity of the electrorheological fluid system. The obtained electrorheological fluid has low zero-field viscosity, high yield stress and strong sedimentation stability.

The invention relates to the technical field of fill engineering, in particular to an urban residual soil heap building body in ecological restoration engineering and a construction method thereof.The urban residual soil heap building body comprises a heap building body formed by filling building residual soil and a plurality of sets of supporting bodies embedded in the heap building body, and the multiple sets of supporting bodies are distributed in a staggered array mode on the plane of the heap building body; the supporting bodies are arranged in a stacked mode from bottom to top, each supporting body comprises a supporting plate vertically embedded in a heaping body and a limiting plate integrally formed at the bottom of the supporting plate, the supporting plates of the supporting bodies in the same group are vertically stacked and fixed and have the vertical settlement allowance L, and L is larger than the settlement height of the heaping body. And the widths of the limiting plates are gradually increased from top to bottom. The problem of settlement in all directions in the urban garden filling process of building residual soil in the prior art can be rapidly relieved.

The invention relates to the technical field of roadbed treatment structures. The invention discloses a high-water-level roadbed treatment structure and a construction process thereof. The high-water-level roadbed treatment structure comprises a composite drainage layer, an anti-seepage water-resisting layer, a composite reinforcing layer and a protective layer. The construction technology comprises the following steps that obstacles such as weeds, trees and stones in a construction area are cleaned, the ground is leveled, and drainage grooves are dug in the two sides of a roadbed; a sand well is driven into the soft soil layer to serve as a vertical drainage body; a gravel layer is laid, mechanical compaction is conducted, a gravel layer is laid, mechanical compaction is conducted, and a composite drainage layer is formed; an HDPE geomembrane is laid on the composite drainage layer, a seam is welded, and an anti-seepage water-resisting layer is formed; a geogrid is laid above the anti-seepage water-resisting layer; the prestressed pipe piles are driven to form a composite reinforcing layer; and precast concrete is laid on the composite reinforcing layer to form a protective layer. The high-water-level subgrade treatment structure can effectively inhibit subgrade settlement and improve subgrade stability.

The application discloses a MAX phase reinforced three-dimensional network tin-based lead-free solder and a preparation method thereof, and belongs to the technical field of lead-free solder. The MAX phase reinforced three-dimensional network tin-based lead-free solder is characterized in that the MAX phase reinforcing phase is distributed in the form of a three-dimensional continuous network skeleton at the grain boundary of a tin-based lead-free solder matrix; and the MAX phase reinforcing phase forms a continuous network penetrating through the whole tin-based lead-free solder matrix. The application also discloses an application of the MAX phase reinforced three-dimensional network tin-based lead-free solder in a high-temperature, high-load and high-frequency vibration scene. Through process innovation and performance optimization, the application aims to finally prepare a "high-strength, high-plasticity and high-temperature stability" tin-based three-dimensional network composite solder, solves the problem that a traditional tin-based single-component lead-free solder is prone to deformation and cracking due to thermal stress and mechanical load, improves the reliability of electronic packaging, and expands the application range of the tin-based lead-free solder in high-demand fields.

The invention provides an anti-settling high-thermal-conductivity pouring sealant and a preparation method thereof. The pouring sealant is formed by mixing a first component and a second component; the first component is prepared from the following raw materials in parts by mass: 2 to 8 parts of vinyl-terminated polydimethylsiloxane, 1 to 10 parts of anti-settling agent, 90 to 98 parts of modified heat-conducting filler and 0.1 to 1 part of platinum catalyst; the second component is prepared from the following raw materials in parts by mass: 1 to 6 parts of vinyl-terminated polydimethylsiloxane, 1 to 10 parts of anti-settling agent, 90 to 98 parts of modified heat-conducting filler, 0.1 to 1 part of inhibitor, 1 to 6 parts of hydrogen-terminated polydimethylsiloxane and 1 to 6 parts of methyl-terminated methylhydrosiloxane; wherein the anti-settling agent is prepared from the following raw materials in parts by mass: 50 to 75 parts of superfine powder, 0.2 to 2 parts of treating agent and 25 to 50 parts of vinyl-terminated polydimethylsiloxane. The pouring sealant provided by the invention has excellent heat-conducting property, anti-settling property and good processability.

The application provides a UV white ink, a preparation method and an application process. The preparation raw material of the UV white ink includes, in terms of weight parts, 5-10 parts of resin, 30-40 parts of amide functional monomer, 25-40 parts of active diluent, 5-10 parts of photoinitiator, 10-25 parts of titanium-containing white paste, and 0.3-3 parts of additive. The resin provides a film-forming skeleton, guarantees the adhesion and scratch resistance of the ink layer; the amide functional monomer uses strong polar amide groups to build low-shrinkage crosslinking nodes, balances the hardness and internal stress, and improves the alcohol resistance; the active diluent adjusts the viscosity of the system and participates in photocuring, and gives the ink good standby anti-settling property. Through the synergistic effect of the components, the application realizes high hardness and excellent scratch resistance, and takes into account the strong adhesion, alcohol resistance and long-term storage stability of the substrate, and is especially suitable for the inkjet printing process of cylindrical curved surfaces such as vacuum cups.

The application discloses a high-flow-state self-compacting grouting dry-mixed mortar and a preparation method thereof, and belongs to the technical field of building materials. The mortar comprises, in parts by weight, cementing material 350-450 parts, modified spherical steel slag sand microbeads 500-600 parts, water reducing agent 4-8 parts, plastic expansion agent 0.1-0.5 parts and defoaming agent 0.1-0.5 parts. The alkali-responsive ionized modified warm rubber is pre-anchored on the surface of the spherical steel slag sand through a chemical bond, the ball rolling effect during mixing is fully played, the anti-segregation effect during the standing period is fully played, and the automatic triggering under the alkali condition is realized. The application solves the problems that the flowability and the anti-segregation property of the existing grouting mortar are difficult to be considered, the anti-segregation agent is directly mixed to easily cause a large loss of the flowability, and the dispersion is uneven. The obtained mortar has an initial flowability of greater than or equal to 325 mm, a bleeding rate of zero and a 28d compressive strength of greater than or equal to 85 MPa.

The invention discloses a liquid metal abrasive particle flow machining device and method based on a Halbach magnetic field. The problem that in the prior art, the polishing uniformity of a complex curved surface is poor is solved. The machining device comprises a platform frame, a mounting plate is arranged on the platform frame, a visual machining module is arranged on the mounting plate, and the two ends of the visual machining module are in linkage with driving air cylinders through push rod assemblies. The visual machining module comprises a closed profiling constraint runner formed by transparent acrylic plates, a workpiece to be machined is fixed in the runner, and the two ends of the runner are connected with piston rods of the driving air cylinders through push rod assemblies. A Halbach permanent magnet array is arranged below the workpiece, and the Halbach permanent magnet array is formed by neodymium iron boron permanent magnets according to a Halbach polarity arrangement mode and used for generating a strong gradient directional magnetic field with one side enhanced and the back side weakened in a machining area.

The invention relates to the technical field of shield tunneling machine automatic control, in particular to an automatic control system and method for a shield tunneling machine muddy water conveying system, and the method comprises the following steps: when a shield tunneling machine starts tunneling or stops tunneling, executing a bypass mode, and transiting from the bypass mode to a tunneling mode or transiting from the bypass mode to a stop mode. According to the automatic control system and method, the tunneling mode, the stop mode and the bypass mode are set, the muddy water conveying system is automatically controlled to enter the bypass mode according to whether the shield tunneling machine conducts tunneling or not, then the muddy water conveying system enters the tunneling mode or the stop mode from the bypass mode, and through transition of the bypass mode, the muddy water conveying system is automatically controlled to enter the tunneling mode or the stop mode. And the stability of muddy water circulation and pressure adjustment can be ensured.

The application provides a fly ash-based filling material slurry, a preparation method and application thereof, and relates to the technical field of fluid conveying engineering. The fly ash-based filling material slurry provided by the application comprises the following components in parts by mass: 20-360 parts of fly ash and 10-100 parts of polyether polyol; the average specific surface area of the fly ash is 13-25 m 2 / g; and the number average molecular weight of the polyether polyol is 600-2000. In the application, the polyether polyol is adsorbed on the surface of the fly ash to form a fixed layer, the percolation of the fixed layer forms a gel network, the dispersion and suspension stability of the fly ash particles are realized, and by controlling the specific surface area of the fly ash and the number average molecular weight of the polyether polyol, the filling material slurry with long-term suspension stability is obtained. The experimental results show that the viscosity of the fly ash-based filling material slurry provided by the application is basically consistent before and after standing, the long-term suspension stability is good, the viscosity is low, and the pipeline conveying property is good.

The invention belongs to the technical field of aluminum-based alloy treatment, and particularly relates to a manufacturing method of a high-toughness composite aluminum alloy hub, which comprises the following steps: under the protection of inert atmosphere, dispersing aluminum powder and magnesium powder in an ethanol solution of PVP-K30, adding PEG-1000, uniformly mixing, and concentrating to obtain an aluminum-magnesium particle suspension; the preparation method comprises the following steps: dispersing TiC in a PEG-6000 aqueous solution, adding Ce (NO3) 3.6 H2O, uniformly mixing, adding (NH4) 2C2O4, reacting, adding an aluminum-magnesium particle suspension, uniformly mixing to obtain slurry, granulating, performing heat treatment in an inert atmosphere, and cooling to obtain composite particles; and an aluminum ingot is melted into molten aluminum, a refiner and the composite particles are added into the molten aluminum, a melt is obtained and poured into a mold, and the aluminum alloy hub is obtained after forming treatment and strengthening treatment. The refining agent and the TiC-containing composite particles are added into the molten aluminum, TiC can be quickly and uniformly dispersed in the molten aluminum, and the obdurability of the aluminum alloy hub is improved.

The utility model belongs to the technical field of energetic material granulation in the droplet microfluidic technology, and discloses a lateral outlet injector with a motor stirring function, which comprises a needle cylinder, one end of the needle cylinder is connected with an end cover, a piston is slidably connected in the needle cylinder, the piston is connected with a push rod, and the push rod is connected with a motor. The end, away from the end cover, of the needle cylinder is rotationally connected with a transmission shaft, one end of the transmission shaft is detachably connected with a stirring paddle, the stirring paddle is located between the piston and the bottom wall of the needle cylinder, and the other end of the transmission shaft penetrates through the bottom wall of the needle cylinder and is connected with a driving device. The transmission shaft is hermetically connected with the needle cylinder through an oil seal; a lateral outlet is formed in the side wall of the needle cylinder; the problems that an existing injector is complex in transmission structure and cannot effectively restrain suspension liquid sedimentation are solved.

The invention belongs to the technical field of underground construction engineering, and particularly relates to an overpass existing subway tunnel protection structure which comprises isolation piles. A plurality of isolation piles are arranged, and the plurality of isolation piles are divided into three groups; the multiple isolation piles are arranged as main supporting components, the overall stability of the structure is enhanced, the isolation piles serve as anti-floating piles of the underground transportation hub structure, the anti-floating capacity of the structure is improved, and due to the arrangement mode of the three sets of isolation piles, when the structure bears loads, force can be more evenly dispersed, local stress concentration is avoided, and the service life of the structure is prolonged. The four inserting holes formed in the fixing frame provide accurate positions for inserting of the inserting plates, it is ensured that the conversion raft plate can be stably hoisted on the fixing frame, the conversion raft plate serves as a bottom plate of the underground transportation hub structure, the upper load is borne, the load is transmitted to the multiple isolation piles through connection with the fixing frame, and therefore the conversion raft plate is prevented from being damaged. And the bearing capacity of the structure is further enhanced.

The invention relates to a water-based inorganic zinc-rich primer capable of being constructed in a low-temperature environment and a preparation method of the water-based inorganic zinc-rich primer, and belongs to the technical field of paints.The water-based inorganic zinc-rich primer is composed of a component A and a component B. During construction, the component A and the component B are used after being evenly mixed according to the mass ratio of (3-4): 7. The component A is composed of a potassium silicate aqueous solution, a carboxylated modified cellulose nanocrystal pre-dispersion liquid and deionized water, and the component B is composed of modified zinc powder, modified conductive carbon black, a composite low-temperature quick-drying catalyst and ferrophosphorus powder; according to the obtained primer, the construction time is 83-93 minutes, the surface drying time is 5-6 minutes and the hard drying time is 35-42 minutes under the conditions that the temperature is 5 DEG C and the humidity is 50%, the surface drying time is 2-4 minutes and the hard drying time is 23-26 minutes under the conditions that the temperature is 20 DEG C and the humidity is 50%, the flexibility of a paint film is 1 mm, the adhesive force is 12-15 MPa, the neutral salt mist resistance is 5754-5986 hours, and the high temperature resistance is 253-260 hours.

This invention relates to a method for sulfonating biomass in a gasifier combustion process. The method includes the following steps: Step 1: Pre-treatment of the biomass; Step 2: Sulfonation treatment of the biomass powder; adding the biomass powder and sulfonating agent to a three-necked flask at a mass ratio of 1:1.5-3, followed by the sequential addition of deionized water and catalyst, stirring to ensure uniform mixing, and adjusting the pH to 11-13; Step 3: Placing the three-necked flask from Step 2 in a constant temperature water bath, allowing it to sulfonate at 80-100°C for 4-8 hours; Step 4: Purification; after the sulfonation reaction in Step 3 is completed, adding a 30%-40% ethanol solution to the system until no more precipitate forms, and then filtering to separate the product; Step 5: Drying; this method significantly improves the surface activity and compatibility with coal, achieving a maximum blending ratio of 30% and a single slurry concentration of 61.4%.

The utility model discloses a kind of mixing device for solution preparation, it relates to solution preparation technical field, the mixing device for solution preparation, including reaction kettle, stirring mechanism and raw material dispersion mechanism, stirring mechanism is located inside reaction kettle, for the mixture of magnesium filings and organic solvent is mixed and dispersed, raw material dispersion mechanism is used to be evenly transported and dispersed to the different area in reaction kettle of magnesium filings, stirring mechanism includes stirring shaft, multistage paddle assembly and be set at multistage paddle tail end telescopic spoiler, telescopic spoiler is unfolded with the change of stirring speed in stirring process automatically, to adjust fluid disturbance range. The utility model is by integrating multistage paddle assembly, telescopic spoiler, ultrasonic transmitter, hollow stirring shaft inert gas injection system and magnetic coupling conical flow guide structure, realize that magnesium filings is in organic solvent High-efficient dispersion and uniform mixing, effectively improve the stability and reaction efficiency of grignard reagent preparation process.

This application relates to the field of dye technology, and provides an environmentally friendly liquid dispersed turquoise blue dye and its preparation method. The preparation method includes: dividing a dispersant into two parts, adding the first part of the dispersant to the turquoise blue dye raw material, and performing a first stirring treatment and a heat preservation treatment sequentially to obtain a pre-dispersed slurry; mixing deionized water, the second part of the dispersant, a wetting agent, and a pH adjuster to obtain an hydration liquid, adding the hydration liquid to the pre-dispersed slurry for hydration treatment to obtain a dispersed turquoise blue slurry; mixing nanocellulose, deionized water, and tannic acid to obtain a premixed liquid, grinding the dispersed turquoise blue slurry and adding it to the premixed liquid, performing a second stirring treatment, and then adding a humectant, an antifoaming agent, and a preservative, and mixing to obtain the environmentally friendly liquid dispersed turquoise blue dye. This invention, by adding the dispersant in two parts, allows the dispersant to be adsorbed onto the surface of the turquoise blue dye particles, reducing particle agglomeration and improving the slurry refinement efficiency and particle size distribution uniformity.

The application discloses a kind of high anti-sputtering drainage asphalt mixture and preparation method thereof, it is related to bitumen technical field.The raw materials of asphalt mixture include matrix asphalt, styrene-butadiene-styrene block copolymer, butyronitrile rubber microsphere, carboxyl silicone oil, composite modified aggregate, composite additive, graphene oxide mixed solution, calcium lactate.The preparation method of asphalt mixture includes the steps of composite modified aggregate preparation, preparation of graphene oxide mixed solution, preparation of composite additive, and preparation of asphalt mixture.The drainage asphalt mixture prepared by the application has strong anti-sputtering performance, excellent drainage performance and good anti-rutting performance.

The present application relates to a kind of continuous discharge reaction kettle unit of pseudo-boehmite, belong to inorganic material synthesis equipment technical field;Including stepped main reactor, the stepped main reactor is in vertical direction and presents stepped variable-diameter structure, at least including first stage reaction section and second stage reaction section from top to bottom, the top of the stepped main reactor is equipped with the feed inlet being connected with the discharge port of the premixing unit, the stepped main reactor is equipped with boost system, the stepped variable-diameter structure cooperates boost system and is synergistically regulated slurry flow rate and residence time;By variable-diameter structure, material flow cross section is changed, gradient flow rate and uniform turbulent flow field are formed, cooperate boost system active flow guide and push, accurately regulate slurry flow rate and each stage residence time, completely solve the problem of traditional equipment flow field disorder, short circuit flow, dead zone, inhibit solid slurry settlement and plugging failure from root, substantially improve the stability of equipment continuous operation.

The application discloses a polishing liquid supply system for providing polishing liquid for a polishing device, which comprises a main storage device, a main power pump and a stirring device, the main storage device is used for storing the polishing liquid, the main storage device comprises a discharge port used for discharging the polishing liquid, a polishing return port used for recycling the polishing liquid after the polishing device is used and a circulating return port used for forming a first self-circulation, the discharge port is located at the bottom of the main storage device, and the return port is arranged higher than the discharge port; the inlet of the main power pump is connected to the discharge port through a pipeline, the outlet of the main power pump is connected to the circulating return port and the polishing device through a pipeline; and the stirring device is located in the main storage device, and the stirring device comprises a stirring shaft, and the axis of the stirring shaft and the axis of the main storage device are configured to be not collinear. Through the above arrangement, the polishing liquid can be fully stirred, and then the polishing liquid with uniform mixing can be stably provided, and the continuity and stability of the polishing processing technology are improved.

This application discloses a method for controlling the settlement of loess dams, comprising: identifying a first region in the loess dam body where the compressive stress exceeds a preset threshold; removing the loess in the first region; filling the first region after loess removal with gravel, the first region after gravel filling being called a gravel-mixed zone; and the loess dam containing the gravel-mixed zone being called a soil-stone composite. This method abandons the traditional method of relying solely on increasing compaction, and adopts the core concept of equal volume replacement. By directly replacing part of the compressible loess volume with rigid gravel particles, it physically reduces the total amount of compressible soil within the loess dam body. Furthermore, the stable framework formed by the gravel effectively bears and transfers the overlying load. This method fundamentally improves the soil structure, thereby suppressing settlement at its source.

The application provides a kind of based on finite element's foundation pit excavation deformation prediction method and system, it is related to foundation pit excavation deformation prediction technical field, overcomes the limitation of construction scheme solidification, cannot system optimization in traditional method by construction timing parameterization and automation intelligent optimization technology.First, establish foundation pit finite element model and discretization partition, define decision variable including excavation sequence, speed, support installation timing adjustment quantity etc.;Further, construct automation simulation driving module, map decision variable space to finite element instruction, execute excavation process simulation and extract key deformation index;Finally, with the minimum deformation fitness value calculated by key deformation index as the optimization goal, use optimization algorithm to search iteratively, filter out the optimal construction timing scheme that meets the deformation control requirement.The application realizes efficient and accurate prediction of foundation pit deformation under any construction timing, and provides proactive control capability for deep foundation pit construction in complex environment.

The present invention discloses a signal switching device for ERP network operation, and relates to the technical field of signal switching. The present invention includes a device body, an integrated circuit is arranged at the top edge of the device body, a protective shell is arranged at the top center of the device body, and also includes an anti-misfolding device, the anti-misfolding device is arranged at the inner center of the protective shell, the anti-misfolding device includes a transmission box, a switching component and a contact terminal, the bottom of the transmission box is fixedly installed at the bottom of the inner wall of the protective shell, the bottom of the switching component is fixedly installed at the bottom of the inner wall of the transmission box, and a stress sensor is arranged inside the switching component, the bottom of the contact terminal is fixedly installed on the right side of the bottom of the inner wall of the transmission box, and the left side of the contact terminal is in contact with the right side of the switching component. The present invention enables the stress sensor to automatically cut off the switching power and pull the switching component to reset when the staff stops the secondary operation and continues to be stressed. At the same time, the damping plate is automatically reset by the torsion spring to avoid the staff from accidentally touching the switching signal source and causing resource loss.

The utility model belongs to mine filling automation control technical field, concretely is a kind of intelligent control system of paste filling coal mining behind fully mechanized support frame. Including execution device, the execution device includes: water reservoir, for storing water;Fly ash feeding device, for storing fly ash;Additive feeding device, for storing additive;Stirring device, the stirring device is connected with water reservoir, fly ash feeding device and additive feeding device respectively, for stirring the mixture of water, fly ash and additive;Filling pump, through filling pipeline, the mixture after stirring in stirring device will be introduced behind working face hydraulic support;Control system, the control system includes PLC controller, for controlling execution device;Monitoring station, including industrial control server, industrial control large screen and video monitoring large screen.

The application discloses a high-strength composite fiber plugging system which is composed of flexible fiber, rigid fiber, suspended viscosity increasing agent, fiber dispersing agent and water. The application also discloses a preparation method of the high-strength composite fiber plugging system, and the steps are as follows: (1) adding formula amount of water into a container, then adding formula amount of flexible fiber, formula amount of rigid fiber and formula amount of fiber dispersing agent into the container in sequence, and mixing uniformly to obtain a mixed solution; (2) stirring the mixed solution obtained in the step (1) at a certain stirring speed, slowly adding formula amount of suspended viscosity increasing agent into the container while stirring, and then stirring uniformly. The application has the advantages of uniform dispersion time less than 120 minutes, viscosity less than 350 mPa·s, suspension stability time more than 1 day, plugging pressure gradient more than 10 MPa / m, plugging rate more than 95%, and thermal stability time of the system at 130 DEG C more than 6 months.