20 results about "Specific gravity" patented technology

The invention relates to the technical field of foundation treatment, in particular to a loess collapsible foundation treatment method based on porosity dynamic monitoring, which comprises the following steps: carrying out initial investigation on a loess collapsible foundation to obtain an initial investigation result, including the soil particle specific gravity, the moisture content, the density, the initial porosity and the collapsibility coefficient of foundation loess; according to the initial investigation result, a foundation treatment scheme is designed, and the scheme comprises determination of the treatment depth, the treatment range and a selected treatment method; foundation treatment is conducted according to the scheme, and in the foundation treatment process, the change of the loess porosity is monitored in real time through a porosity monitoring device; and according to the real-time monitoring data of the porosity, a foundation treatment scheme is adjusted or additional treatment measures are taken until the foundation porosity reaches a preset range and the foundation meets design requirements. The dynamic change of the loess porosity can be monitored in real time, foundation treatment measures can be adjusted in time according to the change of the porosity, and the loess collapsible foundation treatment effect and reliability can be improved.

The invention provides an ash conveying pipeline high ash specific gravity working condition abnormal mode recognition and blockage prevention and control method, which comprises the following steps: acquiring ash flow speed and pressure distribution data in real time through a sensor array deployed at a key part of an ash conveying pipeline, and determining a material flow state in the pipeline; identifying a local pressure abnormal area according to the material flowing state; acquiring pipeline wall thickness monitoring data corresponding to the local pressure abnormal region, comparing the pipeline wall thickness monitoring data with a preset wear-resisting threshold value, and judging whether an auxiliary gas source injection mechanism is activated or not; the ash flow resistance increasing phenomenon is relieved by adjusting gas source injection parameters; predicting the position and severity of a potential blockage point, and determining a trigger condition of an instant dredging function; activating a local purging device through the triggering condition, obtaining fluidization effect feedback data after purging, and judging whether dredging is completed or not; and adjusting a pipeline material simulation model according to the fluidization effect feedback data, and generating an adjustment suggestion for enhancing wear resistance.

The present application relates to a kind of engineering filling sludge solidified particle settlement quantity prediction method.Engineering filling sludge solidified particle is used as filling material, lack standard settlement quantity prediction method.This method prepares two samples of solidified particle;Through first sample, the specific gravity of solidified particle is calculated;First sample is treated by immersion, and the volume proportion of good solidified particle and poor solidified particle is obtained;The compression modulus of good solidified particle and the compression modulus of poor solidified particle are determined;Through second sample, the maximum porosity and minimum porosity of solidified particle are determined;Combined with filling engineering design load and design thickness, total settlement is calculated.This method comprehensively considers upper load and solidified particle gravity when engineering filling sludge solidified particle settlement quantity is predicted, and the compression settlement of good solidification and poor solidification particles is also considered, in addition, the volume reduction caused by the internal reduction of particle porosity, internal compression is also used in prediction calculation, and more real and reliable total settlement prediction value is obtained.

The invention discloses an automatic preparation method of high-permeability stratum shield slurry based on a deep learning model, and belongs to the technical field of high-permeability stratum shield slurry, and the method comprises the following steps: S1, designing slurry parameters by adopting an orthogonal design method, and selecting three factors of effective particle size, specific gravity and viscosity of slurry for research; the effective particle size of the slurry is prepared from pure bentonite slurry with the swelling-water ratio of 1: 12 and particle materials with different particle sizes; s2, carrying out penetration test on the prepared slurry sample in stratums with different permeability coefficients, and recording the change condition of the water filtering amount along with time, the type of a formed mud film and the thickness of the mud film; by establishing the quantitative evaluation index based on the deep learning model, the mud film performance can be accurately and objectively evaluated, and a scientific basis is provided for mud preparation. And in combination with quantitative evaluation indexes and a deep learning model, automatic optimization of the slurry formula is realized, the slurry preparation efficiency is improved, and the labor cost is reduced.

The application provides a device for measuring the density of water film on the surface of soil particles and the specific gravity, which comprises a vacuum saturation cylinder with a sealing cover arranged at the upper end, an electronic balance arranged in the saturation cylinder, a magnetic stirrer and a temperature control box with an open top arranged above the electronic balance in sequence, a narrow-neck glass volumetric flask arranged in the temperature control box, a temperature controller and benzyl silicone oil, and a camera and a computer data acquisition system; the narrow-neck glass volumetric flask comprises an upper part with a narrow neck and a scale and a lower part communicated with a liquid supplementing pipe, the upper part and the lower part are separable and can be connected by a sealing washer, the narrow neck and the scale of the narrow-neck glass volumetric flask extend upwards beyond the top of the temperature control box and the vacuum saturation cylinder, the liquid level is photographed in real time by the camera and the data is transmitted to the computer data acquisition system for analysis and calculation. The application provides a new way for measuring the density of water film on the surface of soil particles and the specific gravity.

Processes, systems, and methods for determining water cut of a fluid sample in an oil and gas process facility including obtaining the fluid sample in a degassing vessel, measuring a pump suction pressure, a pump discharge pressure, a flow rate, and a temperature of the fluid sample, and obtaining a pump curve corresponding to the pump, the pump curve showing a relationship between the flow rate and a pump head. Processes, systems, and methods for determining water cut also include receiving the pump suction pressure, the pump discharge pressure, the flow rate, and the temperature, determining the pump head corresponding to the flow rate, determining a specific gravity of the fluid sample by Equation 1, and determining a water cut of the fluid sample by Equations 2 and 3, using a computer processing unit.

The prior art still depends on special properties such as electrical resistivity or Blaine specific surface area, and special equipment such as a constant-temperature water bath, a temperature sensor and a data recorder is needed. In addition, a small enterprise is difficult to obtain a dust-free laboratory space and is difficult to bear the cost of professional experiment technicians. Besides, the test method consumes long time (1-91 days), and the long test period can generate adverse effects on the production process, which may cause production bottleneck, inventory cost increase and potential quality problems. Another problem is that the existing method only evaluates a very small amount of cementing materials and is difficult to reflect the real characteristics of a large batch of materials which are actually used in the industry. The invention provides a quality evaluation method, which can simply, quickly and accurately judge the similarity between different cementing materials. The method is based on the construction of a calibration curve which is used for representing the relationship between the particle density index (DPI) and the relative specific gravity of a series of given cementing materials.

This application discloses a method for extracting the residual density field of the Earth's crust based on the separation of magnetic mineral density effects, relating to the field of geophysics. The method includes: obtaining the three-dimensional density and magnetization structure of a target region; obtaining the three-dimensional temperature structure of the target region; converting magnetization into magnetite content; and stripping away the density effect of magnetite to obtain the residual density of the Earth's crust. This invention, through quantitative estimation and separation of the magnetic mineral density effect, explicitly removes the contribution of magnetic minerals to the density field from the total density structure, avoiding interference from magnetic mineral enrichment in the interpretation of crustal density anomalies. It estimates the volume fraction of magnetite using magnetic information and combines it with the temperature-corrected density structure to establish a crustal density component decomposition method based on a volume fraction mixing model, achieving physical differentiation between magnetic and non-magnetic components in the density field. It does not rely on specific gravity or magnetic inversion algorithms and has good versatility and scalability.

The invention is applicable to the technical field of underground engineering construction, and provides a micro-settlement control construction method for a shield tunneling machine to pass through an extremely soft soil stratum of a river in a close range, which comprises the following steps: S1, preparation before construction: S1-1, geological exploration: adopting various exploration means such as drilling, static sounding and vane shear test, and obtaining a micro-settlement control result; the method comprises the following steps: comprehensively surveying river bottom mud of a crossing section and a lower extremely-soft soil stratum to obtain physical and mechanical parameters of natural water content omega, natural weight gamma, void ratio e, compression modulus Es, cohesive force c and internal friction angle phi of the stratum, and meanwhile, ascertaining hydrogeological conditions of river water level, flow velocity, riverbed deposition thickness and stratum permeability coefficient k. According to the method, the quantitative relation among the tunneling parameters, the grouting parameters and the settlement amount is established, closed-loop control of the construction process can be achieved, the settlement amount can be effectively controlled within a micro-amplitude range, and the safety of a project and the surrounding environment is guaranteed.

Provided is a glass containing a crystalline phase, the glass including at least one crystalline phase selected from the group consisting of cristobalite, lithium disilicate, and petalite, in which a value of E / ρ, which is a ratio of Young's modulus E to specific gravity ρ, is 35 or more, and a glass transition point is 680° C. or higher.

This invention belongs to the field of paleogeographic restoration technology in geological exploration, and discloses a method and system for river paleoslope restoration based on the combined use of well and seismic data. The method determines the underwater specific gravity based on sediment mineral composition; determines the ratio of surface friction shear velocity to particle settling velocity based on median grain size; calculates dimensionless grain size, settling velocity, and particle Reynolds number based on grain density, fluid density, grain diameter, and kinematic viscosity; obtains the point dam thickness from well logging curves, and obtains the initial full-bank depth after decompaction correction; obtains the paleochannel width from seismic data, corrects the initial full-bank depth, and obtains the full-bank depth of the river channel; and calculates the river paleoslope based on underwater specific gravity, median grain size, full-bank depth of the river channel, the aforementioned ratio, and dimensionless parameters. This invention achieves quantitative calculation of deep-time river paleoslope, significantly improving the accuracy and reliability of the assessment, and solving the problems of traditional methods relying on qualitative reconstruction, difficulty in data acquisition, and high computational costs.

A centrifuge for separating minerals by specific gravity is disclosed. The centrifuge rotates to circulate a slurry through a collection region and subject the slurry in the collection region to centripetal forces that facilitate stratification within the collection region by the specific gravity of the constituent minerals of the slurry. Energy, such as acoustic energy, is coupled with the collection region and enhances the specific gravity stratification within the collection region.

The objective of this invention is to reduce the burden of sieving light-density materials discharged from a density-differential sorting machine. [Solution] The sieving and recovery set according to the present invention comprises a sieving member 100 and a recovery member 200. The sieving member is attached to the discharge port EX of the low specific gravity material in the specific gravity difference sorting machine SGD. The recovery member is positioned below the sieving member to receive the low specific gravity material discharged from the discharge port. The sieving member has a perforated plate 120 and a mounting portion 110. The perforated plate is inclined downward as it approaches the recovery member. The mounting portion attaches the perforated plate to the aforementioned discharge port. The recovery member has a first recovery container CNu, a second recovery container CNl, and a non-perforated plate 220. The first recovery container is positioned below the lower end of the perforated plate. The second recovery container is positioned below the first recovery container. The non-perforated plate is inclined downward from a position below the upper end of the perforated plate towards the second recovery container and extends to the second recovery container.

The application belongs to the technical field of mineral separation device, and is especially a suspension type shaking table mineral separation device, which comprises a base I-shaped steel, a connecting frame is installed on the base I-shaped steel, an upper layer suspension I-shaped steel is installed on the connecting frame, a transmission device is installed on the upper layer suspension I-shaped steel, a drip zone is installed on the transmission device, and a three-phase asynchronous reciprocating motor is installed on the upper layer suspension I-shaped steel. Compared with a traditional fixed bed surface, the belt bed surface has a lower friction coefficient and better self-cleaning performance, and the resistance of mineral particles moving on the bed surface is smaller, which is beneficial to the rapid layering and transverse movement of different specific gravity minerals. The drip zone is obliquely arranged towards the outside, so that the water obtains an outward directional flow rate when flowing out of the water outlet, which is cooperated with the reciprocating direction of the belt bed surface, and the separation effect of light minerals and heavy minerals is strengthened.

The invention provides an abrasion and blockage optimization method for coal ash conveying of an ash conveying pipeline, and the method comprises the steps: collecting the specific gravity data and airflow velocity data of coal ash in the ash conveying pipeline in real time through a sensor, and processing the data through a particle swarm optimization algorithm to simulate the stress distribution of the inner wall of the pipeline, thereby obtaining a quantitative evaluation value of the wear aggravation degree of the pipeline; according to the optimized sequence version, processing a historical coal ash conveying difficulty data set, classifying the validity of the sequence version by adopting a support vector machine model, and if a classification result shows that the validity is higher than a preset threshold value, integrating the sequence version into a control system, and determining a final wear resistance optimization strategy; and acquiring strategy parameters from the final wear resistance optimization strategy, inputting the strategy parameters into a field equipment interface to execute pressure precise cooperative adjustment, and judging whether the strategy parameters reduce the surge increase of the blockage frequency or not by continuously monitoring the adjusted airflow distribution data to obtain an updated version of the overall response mechanism of the system.

The invention discloses an intelligent shield soil pressure adjusting method based on deslagging condition and ground surface settlement, which comprises the following steps of: 1, starting tunneling by a shield tunneling machine, acquiring real-time tunneling data, inputting boundary parameters such as soil layer moisture content and weight, and judging whether slag soil is measured by wet weight or dry weight according to soil property information and the real-time tunneling data; 2, calculating to obtain a theoretical deslagging weight m < theory >, a theoretical deslagging volume V < theory >, an actual deslagging weight m < actual > and an actual deslagging volume V < actual >; and 3, determining the soil pressure parameter adjustment value of the shield tunneling machine according to the theoretical slag tapping values m < theory > and v < theory > and the actual slag tapping values m < actual > and v < actual >. The invention relates to the technical field of shield construction, and can overcome the defects in the prior art.

This invention discloses a portable device and method for detecting the bulk density of a ring knife soil sample using gamma rays, and belongs to the field of soil bulk density measuring devices. The device includes a gamma ray source, a housing, a radiation particle counter, a pull-out sample case, and a power supply. The center of the radiation detection window of the radiation particle counter is on the same vertical line as the center of a third radiation penetration hole opened in the top plate of the sample case, a second radiation penetration hole opened in the bottom plate of the pull-out sample case, a first radiation penetration hole opened in the sample case support plate, and the gamma ray emission hole. The radiation particle counter records the gamma ray intensity before and after placing the soil sample, and then the bulk density of the soil sample is obtained by direct calculation based on the soil bulk density calculation formula. This method allows for rapid calculation of soil bulk density data, enabling continuous and rapid measurement of the bulk density of ring knife soil samples in the field.

The invention discloses a high-dielectric high-power low-loss ferrite material and a preparation method thereof, the matrix structure is yttrium iron garnet, the ferrite material belongs to a gyromagnetic ferrite material, the chemical formula of the ferrite material is Y3-a-b-cBiaCabDycZrbIndFe5-b-d-fO12-1. 5f, a is greater than or equal to 0.9 and less than or equal to 1.55, b is greater than or equal to 0.2 and less than or equal to 0.45, c is greater than or equal to 0 and less than or equal to 0.06, d is greater than or equal to 0 and less than or equal to 0.3, and f is greater than or equal to 0 and less than or equal to 0.2. The invention also discloses a preparation method of the ferrite material, the specific gravity of a liquid phase medium is gradually reduced in two times of ball milling, the particle size of the material is reduced, and the particle uniformity is improved. And a sectional sintering process is combined, so that uniform generation of fine grain ferrite is promoted, and precipitation of a second phase is inhibited. According to the ferrite material prepared by the invention, the dielectric constant is 22-31, the ferromagnetic resonance line width is 70-110 Oe, the saturation magnetization is 1600-1950 Gs, and the electromagnetic loss is tan delta epsilon lt; the ferrite material has good performance stability, and can be applied to a small-size ultra-wideband circulator.

The application discloses a kind of diaphragm wall construction caused existing shield tunnel longitudinal displacement calculation method, comprising: step 1, according to the stratification of diaphragm wall excavation soil body and relevant mechanical parameters obtained in geological exploration report;Step 2, according to the specific gravity and average thickness of soil body, uniformly distributed unloading is calculated;Step 3, the vertical unloading stress at the axial position of existing shield tunnel is calculated;Step 4, the longitudinal displacement w (x) of existing shield tunnel is calculated 地连墙成槽开挖过程 ;Step 5: the vertical additional stress at the axial position of existing shield tunnel is calculated;Step 6, the longitudinal displacement w (x) of existing shield tunnel is calculated 地连墙混凝土浇筑过程 ;Step 7, using superposition principle, the longitudinal displacement of existing shield tunnel is calculated.The purpose of the application is to propose a kind of diaphragm wall construction caused existing shield tunnel longitudinal displacement calculation method, can quickly determine the longitudinal displacement of existing tunnel caused by diaphragm wall construction process grooving stage and concrete pouring stage.