890 results about "Slurry flow" patented technology

The invention relates to the technical field of reservoir bedrock anti-seepage grouting, and discloses a reservoir bedrock anti-seepage grouting method which comprises the following steps: acquiring fracture data through geological exploration, and constructing a reservoir bedrock fracture distribution model; simulating a flow path and permeability characteristics of the slurry in the fracture based on the fracture model; the grouting pressure and flow are determined through an optimization algorithm, and a grouting scheme is formulated; screening grouting materials according to fracture characteristics, and analyzing stress-strain and permeability of the grouting materials; a construction process is formulated, the grouting state is monitored in real time, and parameters are dynamically adjusted; and after grouting, carrying out permeation and pressure test to evaluate whether the curing effect reaches the standard or not. Based on the three-dimensional fracture structure modeling and flow field simulation technology, high-precision recognition and dynamic evolution tracking of the fracture permeation path in the complex rock mass of the reservoir bank are achieved, so that grouting hole layout is more accurate, the slurry flow direction is more controllable, and the method is different from a point-selecting grouting mode of a traditional empirical method.

The invention provides a marine unfavorable geology reef limestone grouting strength prediction method based on a pore structure. The method comprises the following steps: calculating a reef limestone rock pore value of a reef limestone rock pore volume accounting for a reef limestone rock mass volume; performing size classification on the equivalent diameters of the communicated pores in the reef limestone, and calculating the volume ratio of each type of communicated pores; calculating the pore sphericity of the pore particles according to the pore particle surface area and the pore particle volume; classifying the pore particles according to the pore sphericity, and calculating the sphericity ratio of each type of pore particles; calculating a seepage coefficient based on the pore value of the reef limestone rock, the volume ratio of various communicated pores and the sphericity ratio of various pore particles; calculating the flow of the slurry flowing in the reef limestone rock under the action of different pressures according to the seepage coefficient; and calculating the tensile strength of the reef limestone rock based on the flow before and after grouting. Through accurate permeability analysis, the construction risk and cost are reduced, and meanwhile the bearing capacity of the foundation base is improved.

The invention discloses a slurry flow velocity measurement method, device and system for a slurry pump, and relates to the technical field of slurry flow velocity measurement, and the method comprises the steps: employing an ultrasonic transducer to transmit an ultrasonic signal to a slurry pipeline and receive a reflection signal, and obtaining ultrasonic propagation data; constructing a slurry flow velocity profile model according to the ultrasonic propagation data, and calculating slurry flow velocity and solid phase concentration distribution based on the slurry flow velocity profile model; and based on the slurry flow velocity and the solid-phase concentration distribution, rheological correction is conducted by combining the slurry flow state, and the actual slurry flow velocity of the slurry pump is obtained. According to the method, the non-Newtonian characteristic and the solid-phase migration effect of the slurry are considered in the measurement process, a rheological parameter dynamic correction mechanism based on the Reynolds number is established, and the measurement precision under the working conditions of high-sand-content and high-density slurry is improved compared with a traditional method.

The invention belongs to the technical field of tunnel engineering, and provides a multi-physics field real-time assimilation simulation and regulation method and system in a tunnel grouting process in order to solve the problem that real-time dynamic simulation and automatic regulation are lacked in existing tunnel construction, and the real-time assimilation simulation and regulation method and system in the tunnel grouting process are provided by utilizing ensemble Kalman filtering and combining real-time monitoring data in the tunnel grouting process. Dynamically correcting parameters of the multi-physical model; time correlation in the slurry condensation process is considered, a time-varying condensation model depicting physical property changes of slurry evolving along with time is integrated, the time-varying condensation model serves as an external function in the time step length to be embedded into the multi-physical field model in correction, and the slurry flowing state is adjusted in a self-adaptive mode through numerical simulation; and generating control parameters of tunnel grouting according to a dynamic simulation result, and realizing closed-loop regulation and control of tunnel grouting. Synchronous linkage of numerical simulation and on-site working conditions is realized.

The invention is suitable for the technical field of rock grouting reinforcement, and relates to a visual crossed fracture flowing water grouting test device and method. A transparent soil material with soil force properties and hydraulic properties similar to those of natural soil such as an internal friction angle, a deformation characteristic and a flow boundary effect is adopted; the water flow and slurry flowing state in an actual stratum can be truly simulated, and the accuracy of a test result is remarkably improved; by means of the layered water injection design of the soil filling box, comprehensive observation of the grouting behavior rule of cross fractures in stratums in different water saturation states is achieved, and the influence of complex hydrological conditions on the grouting effect is effectively reproduced; and a tracer agent with observation advantages is introduced in the grouting process, so that the visual observation capability on the slurry diffusion path, the slurry diffusion range and the flow velocity change is greatly enhanced. According to the method, the diffusion path, the expansion range and the grouting effect of the grout in a deep crack and a large model can be visually observed, the grouting effect is greatly improved, and a scientific basis is provided for optimizing the grouting process and predicting the grouting effect.

A grinder-filter apparatus for preparing an agricultural sample slurry in one embodiment includes a housing defining a grinding chamber, a rotatable paddle disposed in the chamber, a peripheral grinding ring fixedly mounted in the chamber, and a perforated baseplate inside the grinding ring. The grinding ring includes vertically elongated slots each having portions extending above and below the baseplate. The paddle may be formed of a resiliently deformable material. The rotating paddle mixes water and the sample material which may be soil in one embodiment to form the slurry, and forces the slurry into the slots which is deposited in a collection chamber beneath the baseplate. The slots filter out soil particles exceeding a predetermined maximum size as the slurry flows through the slots to the collection chamber. The grinding chamber includes an openable waste door to flush debris out of the chamber between preparing batches of slurry.

The invention discloses a fractured rock mass permeation-splitting grouting simulation method and system, and relates to the technical field of grouting simulation methods.The simulation method comprises the steps that a fractured rock mass model is built, and model parameters are set; solving the phase fraction equation to obtain the two-phase fraction of the slurry interface; solving the transmission time tracking equation, and combining with the slurry time-varying curve to obtain a slurry viscosity field; whether the slurry pressure reaches the set splitting pressure or not is judged, and if not, solving is conducted according to the permeation model; if the splitting pressure is reached, the splitting pressure is solved; continuously updating the slurry velocity field and the slurry pressure field until the grouting termination time is reached, and completing the permeation-splitting grouting simulation of the fractured rock mass; according to the method, the slurry permeation process is described on the basis of a Darcy-Blackman method, the rock mass splitting grouting process is described by adopting a viscoplastic constitutive fusion fluid volume method, and therefore the rock mass splitting and slurry flowing process in the fractured rock mass high-pressure grouting process is described.

The invention discloses a directional grouting test device and a visual test method for a goaf, and the method comprises the steps: building a bed rock, laying a mineral product to be mined, laying and filling an area to be reinforced, burying a soil pressure gauge and a water pressure gauge, burying a grouting floral tube, arranging a grouting inner tube, communicating a grouting system, and setting a particle imaging velocimeter PIV. In the test process, the seepage and diffusion process in the slurry and the stress state of the rock-soil body are monitored by using a soil pressure meter and a water pressure meter; calculating the total amount of slurry flowing into the model through a slurry barrel outer scale; after grouting is finished, original-state sampling is conducted on the grouting permeation reinforcement area, a mechanical property test and a microcosmic test are conducted, and the grout permeation and reinforcement effect is analyzed; the grouting pressure-seepage distance-mechanical property relation is obtained. The goaf directional grouting permeation simulation device can carry out goaf directional grouting permeation simulation, facilitates mechanical property test of original state sampling, and has the characteristics of visualization, simulation, monitoring and the like.

The utility model discloses an anti-blocking type side slope grouting drill bit, which belongs to the technical field of side slope protection and comprises a grouting pipe and a grouting drilling tool, the grouting drilling tool is mounted at the bottom end of the grouting pipe in a threaded manner, and inner cavities of the grouting drilling tool and the grouting pipe are provided with grouting channels; the grouting drilling tool is composed of a drilling pipe and a drill bit, the top end of the drilling pipe is in threaded connection with the grouting pipe, and the bottom end of the drilling pipe is in threaded connection with the drill bit. A sealing structure is fixedly installed in an inner cavity of the drill pipe, an adjusting structure is slidably installed at the bottom end of the drill bit, a driving disc is driven through an electric rod in the sealing structure, a sealing block is driven by a transmission folding frame to unfold or contract along a moving groove, self-adaptive adjustment is achieved in cooperation with a piston pipe and an air injection pipe, and the sealing structure can be tightly attached to the inner walls of grouting holes with different diameters; effective plugging is formed, the risk that grout flows back to the outside of the drill hole along the drill hole due to untight sealing is effectively reduced, the reinforcing effect of grouting is enhanced, a slope rock-soil body is fully reinforced, and the stable grouting pressure and the reinforcing effect are guaranteed to a certain extent.

Ball valves, ball elements used therein, and processes for using same in cutting operations and fluid or slurry flow regulation feature a second set of ball rotation pins that mount to a second piston that is hydraulically driven in the opposite direction of a first piston. In certain embodiments the pistons move perpendicularly to a direction of flow through the ball valve.

The invention relates to a turbine flowmeter suitable for slurry flow measurement and a method for reducing abrasion, and belongs to the technical field of well cementation grouting metrology. The turbine flowmeter comprises a flow pipe body used for feeding formula slurry, and the periphery of the flow pipe body is connected with a plurality of detachable sensor seats; the two retainers are connected to the two ends of the flow pipe body respectively. The shaft sleeve is inserted into one end, facing the flow pipe body, of the retainer; the impeller shaft is inserted into the shaft sleeve and rotates in the shaft sleeve, and the impeller shaft and the flow pipe body are coaxially arranged; the impeller is coaxially connected with the impeller shaft; the technical problems that in the prior art, when a turbine flowmeter is used for mud flow measurement, precision is low, and abrasion resistance is poor can be solved.

The invention provides a soft soil stratum slurry balance shield slurry feeding / discharging pipeline slurry flow test system. The system comprises a slurry circulation pipeline, monitoring equipment, a soil body cutting simulation system, a PIV-based visualization device, an analysis system and a control system. The slurry circulating pipeline comprises a slurry tank, a vortex pump and a slurry conveying pipe; the monitoring equipment comprises a plurality of sensors; the soil body cutting simulation system is used for simulating a shield excavation working condition; the visual device based on PIV is used for recording a visual flow field of slurry flowing in the slurry conveying pipe in real time; the analysis system is used for macroscopic and microscopic analysis; and the control system controls equipment power in the system. The device and the method can simulate the working conditions of most slurry balance shield slurry discharge pipelines and record macro and micro evaluation indexes in the slurry flowing process, so that the flowing property and the slag carrying capacity of slurry in the slurry feeding / discharging pipelines under different stratum conditions are explored, and the device and the method are low in cost, high in operability and high in compatibility.

The invention belongs to the technical field of water conservancy construction, and particularly relates to a channel construction device for a water conservancy project, the channel construction device comprises a formwork assembly, a supporting frame and a slurry guide device, the slurry guide device comprises two slurry guide plates hinged to each other, the gravity principle is utilized, concrete slurry can naturally flow to cavities in the two sides, the requirement for manual intervention is greatly reduced, and the construction efficiency is improved. Therefore, the pouring efficiency is improved. The upper ends of the two slurry guide plates are provided with comb-tooth-shaped structures which are mutually crossed to form a material receiving groove, so that concrete slurry can be effectively received and guided, certain dispersion and uniform distribution effects can be achieved in the slurry flowing process, the problem of local accumulation or insufficient supply is effectively avoided, and the uniformity of concrete pouring is improved; in addition, the two slurry guide plates are hinged, on one hand, the span of the slurry guide device can be flexibly adjusted according to the width of the channel, and on the other hand, the size of the slurry guide device can be conveniently reduced in the transportation process, the transportation cost is reduced, and the flexibility is improved.

The utility model discloses a grouting device for overlying strata separation layer grouting construction, and particularly relates to the technical field of grouting pipes, the grouting device comprises a grouting pipe body, supporting frames are arranged on the inner surface of the grouting pipe body, a cleaning device is arranged between the two supporting frames, the cleaning device comprises a casing pipe, and the casing pipe is sleeved on the supporting frames. A rotating rod is rotatably installed on the inner surface of the sleeve, a spiral groove is formed in the inner wall of the sleeve, a vertical groove is formed in the upper end of the rotating rod, a sliding block is slidably installed on the inner surface of the vertical groove, a spiral magnet sliding in the spiral groove is further fixed to one end of the sliding block, and a cleaning assembly is arranged on the outer surface of the sleeve. According to the grouting device for overlying strata separation layer grouting construction, the design of the cleaning device is adopted, and when the spiral scraping plate rotates and moves downwards through inclination of the spiral scraping plate, grout gradually flows downwards along the inclined face of the spiral scraping plate, so that the grout is discharged out of the bottom of the grouting pipe body, and cleaning of the grouting pipe body is facilitated.

The invention discloses an unsteady slurry diffusion process simulation method and system considering a slurry-rock coupling effect, and belongs to the technical field of rock mass engineering grouting, and the method comprises the following steps: step 1, defining basic assumptions of slurry and fractures; step 2, establishing a slurry flow control equation and a fracture deformation control equation based on basic assumptions of slurry and fractures; step 3, based on the slurry flow control equation and the fracture deformation control equation, establishing an unsteady slurry-rock coupling pressure control equation; 4, initial conditions, boundary conditions and grouting conditions are established based on basic assumptions of grout and fractures, and an unsteady grout diffusion model considering the grout-rock coupling effect is established in combination with an unsteady grout-rock coupling pressure control equation; and 5, carrying out numerical solution on the unstable slurry diffusion model by adopting a finite volume method. The method is suitable for grouting design and optimization in the fields of tunnel engineering, mine engineering, geological disaster prevention and control and the like, and theoretical support and technical guidance can be provided for engineering practice.

The invention relates to the technical field of grouting simulation, in particular to an efficient simulation method and system for grouting at different temperatures based on deep learning, and the method comprises the steps: constructing a relational expression between a rock-soil mass medium and the change of a grouting material under different temperature conditions; the rock-soil mass medium and grouting material change relational expressions under different temperature conditions comprise a relational expression of temperature and porosity, a relational expression of temperature and stress strain, and a relational expression of temperature and slurry viscosity; on the basis of actual stratum data of the grouting area, to-be-determined parameters in all the relational expressions are obtained through fitting; constructing an improved recurrent neural network; training the improved recurrent neural network to obtain a trained improved recurrent neural network; and inputting the temperature of the to-be-predicted grouting area into the trained improved recurrent neural network to obtain the slurry flow velocity and the slurry permeation and diffusion distance of the to-be-predicted grouting area. And efficient simulation of the whole grouting process at different temperatures is realized.

The invention discloses a battery slurry detection device and method, and the device comprises an electromagnetic induction sensor which comprises at least two excitation coils reversely wound on the outer side of a slurry pipeline and at least one induction coil wound on the outer sides of the excitation coils; the electric signal sensor is connected with the induction coil and is used for acquiring an electric signal change value of the induction coil under the condition that the battery slurry flows through the electromagnetic induction sensor from the slurry pipeline; the processor is connected with the electric signal sensor and is used for detecting the content of the magnetic metal particles in the battery slurry according to the electric signal change value; and the power supply is connected with the electromagnetic induction sensor, the electric signal sensor and the processor. According to the method, the electromagnetic induction sensor is arranged on the outer side of the slurry pipeline, and when the battery slurry flows through the electromagnetic induction sensor, the content of the magnetic metal particles in the battery slurry can be obtained according to the electric signal change value.

The invention discloses a three-dimensional slit coating simulation method and system, electronic equipment and a computer readable storage medium. The three-dimensional slit coating simulation method comprises the following steps: establishing a three-dimensional geometric model of a coating machine die head; performing grid division on the three-dimensional geometric model; establishing a slurry flow two-phase flow model in the three-dimensional flow field; setting solving parameters, slurry attributes and boundary conditions of a slurry flow model, wherein the boundary conditions comprise a speed inlet and a pressure outlet of slurry and a foil moving wall surface; carrying out initialization solution on the slurry flow model based on the boundary condition, and ending when calculation reaches a convergence condition; and running simulation, analyzing the change of flow velocity distribution and pressure distribution of the slurry in the three-dimensional geometric model, and observing the three-dimensional flow characteristics of the slurry in the three-dimensional geometric model. According to the invention, the flow behavior of the slurry in the coating process can be accurately predicted, especially the problems of edge thickness change and coating uniformity at a slit outlet are solved.

The invention discloses a control method, device and equipment of a semi-dry method deacidification system and a medium, and relates to the technical field of household garbage incineration power generation treatment. Determining a prediction error value and inputting the prediction error value into a feedforward controller of the first PID controller; the feed-forward controller determines a lime slurry flow feed-forward compensation value according to the prediction error value; based on the lime slurry flow feedforward compensation value, a lime slurry flow error compensation value output by a main controller of the first PID controller and the actually measured lime slurry flow serving as a disturbance compensation value, a first control instruction used for controlling the opening degree of a lime slurry adjusting valve is output through an auxiliary controller of the first PID controller. The method is suitable for a control scene of a semi-dry deacidification process.

The invention relates to the technical field of automatic control, in particular to an automatic control method for a wet desulphurization slurry circulating pump, which comprises the following steps of: acquiring a preset local range of data points in three flow data time sequence of sulfur dioxide, replacing the data points in the preset local range by using an interpolation method, obtaining a reference local range of the data points; the noise degree of the data points is obtained through the difference between the flow values and the fitting values of the data points in the preset local range and the reference local range and the difference between the flow data time sequence sequences; in the Fisher optimal solution method, the flow data time sequence is divided into a plurality of data segments according to the noise degree of data points, a sliding window is set based on the obtained size of the sliding window to denoise the flow data time sequence, and then the slurry flow needed by the slurry circulating pump is determined, so that automatic control over the slurry circulating pump is achieved. And the accuracy of automatic control of the slurry circulating pump is effectively improved.

The invention is applied to the technical field of lithium battery processing, and discloses a lithium battery slurry efficient mixing processing device based on slurry flow control, the lithium battery slurry efficient mixing processing device comprises a mixing barrel, the upper end of the mixing barrel is fixedly provided with an upper cover through a bolt, and the lower end face of the mixing barrel is fixedly provided with two electromagnetic valves; a slurry flow guide mechanism is arranged in the mixing barrel and the upper cover, and mixing of raw materials is enhanced through flow guide and disturbance of slurry. According to the lithium battery slurry efficient mixing processing device based on slurry flow control, through cooperation of the slurry flow guide mechanism, the center cylinder, the center column, the discharging groove, the discharging rod and other components, directional flow guide can be conducted on slurry, raw materials flow according to a preset path, and the problems that a traditional device cannot control the slurry flowing path, and the slurry flow control efficiency is high are effectively solved. The slurry mixing device solves the problem that local mixing is not uniform due to uniform mixing of the slurry, ensures the uniformity of slurry mixing, realizes ordered conveying of the slurry through the synergistic effect of structures such as a flow guide column, a feeding groove and a flow guide rod, and further improves the mixing effect.

The invention discloses dispersing equipment. The dispersing equipment comprises a dispersing part and a driving part, the dispersing component comprises a rotating shaft, a dispersing machine and a centrifugal pump. The dispersion machine comprises a dispersion main body and a screen cylinder. And the dispersing main body is provided with a dispersing cavity for accommodating the screen barrel. The centrifugal pump comprises a pump shell and an impeller. The rotating shaft is sequentially and fixedly connected to the screen barrel and the impeller. The pump shell is provided with a pump cavity, a feeding port and a discharging port. The impeller is arranged in the pump cavity. The discharge hole is formed in the end part, far away from the dispersion machine, of the pump shell. The pump shell is provided with a side flow channel. And a discharge port is formed in the discharge end of the side runner. And the feeding end of the side runner and the feeding hole are oppositely arranged in the axial direction of the rotating shaft. And the feed port, the pump cavity, the side runner, the discharge port and the dispersion cavity are sequentially communicated and form a slurry runner. And the driving part is fixedly connected with the rotating shaft and is used for driving the rotating shaft to drive the screen barrel and the impeller to rotate, so that the control difficulty of the material retention time and the shearing strength is reduced, the consistency of material characteristics is improved, and the material dispersion quality is improved.

The invention provides a shearing, cavitation and separation integrated device for desorption of waste oil-based drilling mud oil sludge, which comprises a static cylinder in which a rotating cylinder and a rerotator are arranged at an interval; the drum is driven by a motor to rotate; a dispersion cavity, a cavitation cavity and a separation cavity which are communicated with one another are sequentially formed in the static cylinder; a radially arranged scattering rod is arranged at the part, located in the dispersing cavity, of the outer wall of the rotary drum, and the slurry fluid is scattered through rotation of the scattering rod; static teeth mounted on the inner wall of the static cylinder and movable teeth mounted on the outer wall of the rotating cylinder are arranged in the cavitation cavity, the movable teeth and the static teeth are in clearance fit, and the movable teeth rotate to shear fluid to generate a cavitation effect; the separation cavity is used for separating fluid, so that heavy-phase sludge flows out from an underflow outlet of the static cylinder, and light-phase oil water flows out from an overflow outlet of the static cylinder; the method does not depend on chemical separation agents, environmental pollution is reduced, resource recovery is achieved, and the treatment cost is reduced.

The invention belongs to the technical field of grouting simulation, and particularly discloses a non-linear coupling simplified filling fracture flowing water grouting simulation method and system.The method comprises the steps that a geometric model of a to-be-simulated area is built, a fluid continuity equation and a momentum equation are built based on initialized model parameters, and a simulation result is obtained; the grouting pressure and the grouting speed of the current time step are calculated; a concentration field equation is constructed according to the velocity field of the current time step, and the slurry concentration distribution and the grouting velocity of the current time step are obtained through coupling solution based on the discrete concentration field equation and the momentum equation; a phase fraction equation is constructed according to the grouting speed of the current time step, and the slurry diffusion form in the water-rich filling fracture of the current time step is obtained; and repeating the process for each time step to finish the simulation of the flowing water grouting of the water-rich filling fracture. According to the method, the calculation efficiency and precision are considered while the algorithm is simplified, and accurate description of the slurry flow characteristics in the fractured porous medium is realized.

A rock housing for horizontal directional drilling machine includes a cylindrical housing body with walls defining a longitudinal cavity. A bearing assembly is provided as a part of the housing and is located above a bit box region of the housing. The bearing assembly is lubricated by drilling mud which flows through the drill string of the drilling machine, which mud flow is normally used for cooling the drill bit and removing cuttings. A portion of the drilling mud is diverted and passes through a gap formed between the bearing races of the bearing assembly, the gap being sized so as to create the necessary back pressure to divert the needed flow of drilling mud to the assembly.

The invention relates to the technical field of mining machinery, and discloses a portable drilling device for ground source heat energy construction, comprising: a frame of a movable structure; the screwed joint is rotationally mounted on the frame, external threads are arranged on the outer side of the screwed joint, and slurry flows in the screwed joint; the rod dismounting barrel is integrally connected to the lower side of the threaded connector; the lifting groove is formed in the outer side of the rod unloading cylinder and is in an inverted L shape; external threads and internal threads are respectively arranged at two ends of the drill rods; the outer convex shell is connected to the outer ring side of the internal thread end of the drill rod; the through hole is formed in the side wall of the drill rod, so that the inner side of the drill rod is communicated with the interior of the outer convex shell; the upper end of the limiting plate is rotationally mounted at the upper part inside the through hole; the elastic piece is connected between the limiting plate and the inner side of the outer convex shell, so that the lower end of the limiting plate rotates into the drill rod; according to the invention, the integrally-connected rod dismounting cylinder is adopted, so that an independent rod dismounting device does not need to be mounted and dismounted, and the loss risk is avoided; and in cooperation with the drill rod with the elastic limiting plate, the rod dismounting action is accurate and stable, and the rod dismounting efficiency is improved.

The utility model discloses a sample preparation platform for testing wall bricks, and the utility model relates to the technical field of sample preparation for testing wall bricks. The sample preparation platform for testing wall bricks is leveled by adjusting four adjustment feet, and the worm is driven to rotate by turning the crank, so that the worm wheel drives the transmission shaft to rotate, so that the bevel gear 2 drives the bevel gear 1 and the screw to rotate, and the four lifting blocks are synchronously lifted and lowered along the inner side of the guide sleeve under the action of the screw, driving the lifting frame to stably lift and lower along the outer side of the platform body, so as to realize the adjustment and control of the sample preparation thickness, and multiple groups of test pieces with different thicknesses can be made at the same time by setting multiple sample preparation platforms, so as to better improve the work efficiency and work capacity, and the scraper is driven to scrape horizontally from the upper end of the lifting frame by pulling the sliding frame horizontally, so as to facilitate the rapid leveling of the sample preparation slurry, and the excess slurry flows into the guide groove, and is concentrated to the discharge port along the inclination of the guide groove, so as to realize the diversion and centralized treatment of the excess slurry.

The invention discloses an ultra-large-diameter slurry shield deslagging parameter optimization method, system and device and a storage medium. The method comprises the following steps that a three-dimensional model is constructed; establishing a motion simulation model; the motion simulation model solves a flow process equation of a slurry fluid phase and a motion control equation of a rock slag particle phase according to the deslagging parameters, so that flow field distribution characteristics and rock slag migration behaviors in the excavation bin and the air cushion bin are obtained; obtaining an evaluation index of the deslagging performance, and judging whether the evaluation index meets a preset requirement or not. According to the method, a fluid phase flow equation and a particle phase motion control equation are solved by utilizing the simulation model, and an interaction mechanism of the slurry and the rock slag is defined, so that simulation is closer to a real situation; and dynamic adaptation of slag discharge parameters with a complex pipe network system and actual construction working conditions is realized. The probability of detention and accumulation of rock slag at the bottoms of the excavation bin and the air cushion bin is remarkably reduced, equipment abrasion is reduced, abnormal tunneling parameters are avoided, and stability and continuity of shield tunneling are guaranteed.

The invention belongs to the technical field of porous tantalum carbide ceramic preparation, and particularly relates to a preparation method of porous tantalum carbide ceramic based on a broken framework, which comprises the following steps: S1, preparing dipping slurry; s2, a polyurethane foam template is immersed in the dipping slurry, the polyurethane foam template is fully pressed so that the holes can be filled with the slurry, and the template is repeatedly rolled through a roller till no slurry flows out of the template; s3, drying the impregnated template, performing high-temperature treatment on the dried template, and cooling to room temperature to obtain a porous tantalum carbide framework; s4, crushing the porous tantalum carbide skeleton into a crushed skeleton with the size of 0.1-5 mm; s5, preparing a phenolic resin solution, mixing the crushed framework with the phenolic resin solution, then transferring the mixture into a mold, and forming after applying a certain pressure to obtain a porous tantalum carbide green body; the crushing brackets are stacked and spliced together to form a porous structure, the pores of a finished product can be adjusted by changing the sizes of the crushing brackets, and the crushing bracket can be applied to finer pores and is extremely low in shrinkage rate.

The embodiment of the invention provides a riverway dredging flow control method and system, and relates to the technical field of riverway dredging flow control, the method comprises the steps that operation data of a riverway dredging system are collected, and the operation data comprise a flow meter feedback value, mud pump operation parameters, pipeline pressure, valve opening and mud concentration; based on the operation data, the abnormal types of the river dredging system are recognized, and the abnormal types comprise flowmeter measurement errors, valve mechanical response hysteresis and slurry rheological characteristic anomalies; and adjusting a control strategy according to the exception type. The river dredging operation efficiency, the equipment safety and the environmental protection level can be improved.