37 results about "Gelisol" patented technology

The utility model discloses a kind of high-cold meadow area frozen soil roadbed adjustable road widening structure, including frozen soil layer, the upper end of frozen soil layer is uniformly provided with anti-frozen soil mechanism, anti-frozen soil mechanism is used to prevent highway frost heaving damage, anti-frozen soil mechanism includes the concrete pile that frozen soil layer inside is uniformly provided, the upper end surface of frozen soil layer is paved with foundation compacted layer, the upper end surface of foundation compacted layer is poured with foundation layer, the upper end surface of foundation layer is poured with road, by the positioning pin plug-in steel sheet pile inside, bolt is inserted into foundation layer inside, it is convenient and fast to lay and install prefabricated concrete road, the design of detachable prefabricated concrete road can be conveniently adjusted road width, and it is convenient and fast to dismount and replace, improve maintenance and replacement efficiency, by symmetrically setting solar panel on both sides of foundation layer, clean pollution-free energy can be used to heat pipe heating foundation layer, to prevent frost heaving and thawing damage foundation layer inside.

The utility model relates to engineering detection technical field, discloses a kind of quick detection device of dry density specifically, to solve the problems such as traditional detection method operation cumbersome, low efficiency, existing radiation risk. Device core includes standard container, weighing sensor, signal conditioning circuit, single-chip microcontroller, hardware proportioning calculator, stable judging module, display screen and ventilation / heating module. Through RFID, container volume V is automatically read, weighing sensor measures soil sample mass m, proportioning calculator calculates dry density ρ=m / V in real time, and the result is output through display screen;Ventilation / heating module accelerates moisture evaporation, shortens detection time. The device has the advantages of real-time display, simple operation, avoids artificial error, no radiation risk, and is suitable for fine-grained soil, coarse-grained soil and frozen soil detection dry density requirements, etc., and is suitable for water conservancy engineering, such as earth dam filling and embankment engineering, building engineering and other fields of soil compaction quality rapid detection.

The present disclosure provides a permafrost mountainous hydrological simulation method and system based on space-ground-air integrated monitoring, relating to the technical field of hydro-meteorological monitoring and water resources forecasting. The method comprises: obtaining permafrost hydrological monitoring data of a permafrost region through space-ground-air multi-monitoring equipment; the permafrost hydrological monitoring data comprises permafrost state and precipitation data; assimilating the permafrost hydrological monitoring data into a distributed hydrological model coupled with a permafrost runoff generation process to obtain a first distributed hydrological model; simulating runoff processes under different permafrost states and permafrost underlying surface hydrological characteristics through the first distributed hydrological model to dynamically quantify precipitation-runoff conversion efficiency. The present scheme can accurately simulate the runoff process in the permafrost region, and then reliably dynamically quantify the precipitation-runoff conversion efficiency.

This application provides a method, device, electronic equipment, and storage medium for predicting permafrost development, belonging to the field of soil analysis technology. The method includes: acquiring climate data of a target area; recursively and adaptively dividing the target area based on the climate data; calculating the climate data diffusion intensity of each target sub-region; inputting the climate data and diffusion intensity corresponding to the target sub-region into a pre-trained climate prediction model, outputting predicted climate data for multiple time steps, wherein the pre-trained climate prediction model includes multiple LSTM modules, each LSTM module including a physical constraint forgetting gate related to the climate data diffusion intensity; and inputting the predicted climate data for each time step into a pre-trained classification model, outputting the predicted permafrost state of the corresponding target sub-region. This method deeply integrates data-driven approaches with physical mechanisms, significantly improving the accuracy and reliability of permafrost development state prediction under complex environments through the synergistic effect of adaptive partitioning and physical constraints.

This invention provides a method and system for calculating the liquid water content of permafrost in highland soil. [Solution] The method includes: step S1 acquiring a soil temperature and humidity observation network dataset from the central part of the plateau; step S2 performing texture classification on the soil to obtain soil texture classification results; step S3 combining the soil texture classification results and the soil temperature and humidity observation network dataset to fit the relationship between solid water content and soil temperature for soils with different textures; step S4 determining a formula for calculating the liquid water content of the soil based on the relationship between solid water content and soil temperature; step S5 improving the VIC model based on the formula for calculating the liquid water content; and step S6 calculating the liquid water content of the plateau permafrost using the improved VIC model.

The application belongs to the technical field of frozen soil engineering, and particularly relates to a concrete-frozen soil contact surface direct shear test sample manufacturing device and method, which comprises a box body, a counterforce frame, a heating plate and a refrigeration plate. The top of the counterforce frame is provided with a walking device, the bottom of the walking device is provided with a pressurizing device, and the pressurizing device is provided with a pressure gauge. The bottom of the counterforce frame is provided with a concrete pouring chamber and a soil sample chamber, and a partition plate is arranged between the concrete pouring chamber and the soil sample chamber. The device has the advantages that the problem of excessive water content of the concrete-frozen soil interface caused by water migration due to gravity is solved.

This invention relates to the field of carbon sequestration assessment technology, specifically a method and system for assessing the dynamic changes of vegetation carbon sequestration in high-altitude mining areas. The invention obtains multi-source data from the target area of ​​a high-altitude mining area through multi-source data collection, and then analyzes it to obtain four core permafrost parameters: aerodynamic roughness, water and heat flux contribution rate, heterogeneity attenuation coefficient, and insulation efficiency attenuation coefficient. Based on these four core parameters, a comprehensive quantitative assessment is performed to obtain permafrost assessment parameters, addressing the shortcomings of existing technologies that do not couple permafrost dynamics and eliminating the systematic bias in carbon sequestration simulation caused by static soil parameters. Furthermore, by comprehensively analyzing the permafrost assessment parameters and vegetation carbon sequestration parameters, a comprehensive carbon sequestration index for each pixel is obtained, and a carbon sequestration report for the target area is output. This quantifies the impact of mining disturbance and ecological restoration on vegetation carbon sequestration, providing a quantitative basis for optimizing mining area restoration plans.

The application discloses a method and system for detecting the depth of a frozen surface of a seasonally frozen soil subgrade based on ground penetrating radar signal characteristics. Compared with traditional methods that rely on empirical formulas or single signal analysis, the application significantly improves the automation and anti-interference ability of the detection, and can effectively adapt to complex and variable seasonally frozen soil environments. The multi-source data set constructed by combining indoor scale test, numerical simulation and field measurement enhances the generalization and robustness of the model. In practical application, the application realizes rapid and non-destructive detection of the depth of the frozen surface, greatly reduces the use of destructive detection methods such as drilling cores, reduces the detection cost and period, and provides reliable technical support for construction quality control and operation period safety evaluation of the seasonally frozen soil subgrade.

The present application provides a permafrost region surface stability evaluation report generation method and device, analyzes the time series cumulative deformation data of the pixels in each observation time period to obtain the annual average deformation rate corresponding to each pixel, the seasonal fluctuation amplitude corresponding to the pixel, the trend significance coefficient corresponding to the linear trend of the pixel and the variation coefficient corresponding to the time series cumulative deformation data of the pixel; according to the annual average deformation rate, the seasonal fluctuation amplitude, the trend significance coefficient and the variation coefficient corresponding to each pixel, the risk level is determined, and then the surface stability evaluation report corresponding to the target region is generated. The combination of long-term plastic deformation of frozen soil and short-term elastic deformation of active layer can accurately lock the composite type extremely high risk area with fast settlement and large fluctuation, strict data quality control, double statistical constraints of trend significance coefficient and variation coefficient, and realize the algorithm level active denoising mechanism, which can eliminate the false positive of geological disasters from the root.

The application belongs to the technical field of slope and gully treatment, and discloses a corrugated steel plate retaining wall anti-frost heaving structure in an alpine permafrost region, which comprises a thick graded sand and gravel soil layer; the corrugated steel plate is a flexible thin-walled structure, and its stress and deformation characteristics can effectively bear the soil pressure and frost heaving force when retaining soil in the permafrost region; the corrugated shape not only enhances the stability of the structure, but also effectively resists lateral soil pressure; when the water in the soil in the permafrost region decreases, the water gradually accumulates on the outer wall of the inclined rod, slides downward through the inclined surface of the inclined rod, and then moves to the outer wall of the outer wrapped water permeable geotextile, so that the water can quickly move to the surface of the outer wrapped water permeable geotextile and penetrate into the thick graded sand and gravel filter layer through the water permeability, thereby avoiding the retention of water in the permafrost layer and helping to reduce the frost heaving phenomenon caused by water freezing.

This invention belongs to the field of power transmission line engineering and structural safety technology, and discloses a method and system for safety assessment of power transmission tower feet. The method includes: calculating the frost pull-out force of frozen soil; establishing a theoretical calculation model for calculating the pressure exerted by the ice-water mixture on the tower feet during the water-ice phase transition process; using the frost pull-out force of frozen soil as the load boundary condition, and constructing a finite element simulation model based on the theoretical calculation model; using the finite element simulation model to simulate and calculate the stress distribution at the tower feet under different liquid phase fractions, and determining the critical liquid phase fraction; performing a secondary loss assessment on the tower feet based on the ice expansion force after ice stabilization, and generating a judgment conclusion; using the critical liquid phase fraction and the judgment conclusion as safety criteria; predicting actual operating parameters and comparing them with the safety criteria, and integrating them to generate a power transmission tower foot safety assessment report. This invention provides a reliable theoretical basis for the safe operation and targeted design of power transmission towers in high-altitude and cold regions.

This application discloses a method, equipment, medium, and product for establishing an analysis model of thaw settlement deformation of frozen soil subgrade, relating to the fields of geotechnical engineering and road engineering in cold regions. The method includes establishing a set of governing equations coupled with thermal, water, and mechanical fields, including temperature field governing equations, moisture field governing equations, and mechanical field governing equations; constructing a subgrade geometric model based on the governing equations; configuring initial and boundary conditions for the subgrade geometric model, including Dirichlet temperature boundary conditions for simulating environmental temperature changes and mechanical constraint boundary conditions for limiting displacement; and performing transient solutions on the subgrade geometric model under the constraints of the initial and boundary conditions to obtain evolution data of the subgrade during freeze-thaw cycles. This application fundamentally overcomes the shortcomings of existing technologies, such as simplified models and incomplete mechanism characterization, and significantly improves the prediction accuracy and long-term reliability of the spatiotemporal evolution law of differential settlement of subgrade.

This invention provides a method, storage medium, and system for measuring and monitoring the soil environment of substation grounding grids in permafrost areas, relating to the field of substation grounding grid safety. The method includes: deploying local environmental monitoring units to collect soil environmental data in real time; acquiring a soil environmental parameter sample dataset; constructing an SSA-SVM model and iteratively training it using the soil environmental parameter sample dataset; training a BP neural network based on the prediction results of the SSA-SVM model to construct a combined prediction model for grounding grid corrosion rate; processing the real-time collected soil environmental data using the combined prediction model to obtain the predicted real-time corrosion rate; and generating an early warning signal based on the predicted real-time corrosion rate. The storage medium and system are used to implement the method. The beneficial effects of this invention are: obtaining the real-time corrosion rate based on real-time environmental parameters, achieving high prediction accuracy, and providing reliable measurement, monitoring, and early warning of the soil environment of substation grounding grids, especially in permafrost areas.

The present application belongs to the technical field of frozen ground foundation engineering, and in particular to a frozen ground foundation bearing behavior prediction method with multi-pile length cooperation. A three-dimensional geological-temperature database of the frozen ground foundation is constructed, stratum distribution, water content, fine particle content and geothermal gradient data are integrated, frozen layers and unfrozen layers are divided, and high, medium and low frost heaving sensitive zones are identified. Based on the sensitive zone distribution, a three-level differentiated pile type of "short pile-medium pile-long pile" is designed, a coupling relationship between pile length and frost heaving sensitivity is established, a group pile soil resistance correction model considering pile length difference is constructed by introducing a multi-pile length cooperation effect coefficient, and a frozen layer rigid shell effect correction model and an unfrozen layer bearing decay model are integrated. Through the differentiated pile type design and the cooperation effect model, the problem that the traditional method cannot handle the spatial variability of frozen soil, resulting in inaccurate bearing behavior prediction, is solved, and the present application has the advantages of accurate prediction, optimized design, improved safety and economy.

The application discloses a frozen soil moisture-ice crystal distributed monitoring system based on neutron scattering and TDR combination. A synchronous trigger response module, optical fiber transmission and hierarchical sampling mode are adopted to realize accurate alignment in time dimension, and trigger delay is controlled within plus or minus 10 mu s. Through low-temperature modification, constant temperature control and lightweight shielding design, the adaptability of the system to special working conditions of frozen soil is improved, and long-term monitoring stability is ensured. The phase state of the application is clear, and the data dimension is complete. Total water is measured by neutron scattering, and unfrozen water is measured by TDR. The ice content is obtained by the difference between the two. Combined with the double calibration framework and error compensation algorithm, the quantitative measurement of the three elements of total water, unfrozen water and ice is realized. The application accurately solves the technical combination difficulty, realizes deep cooperation, solves the volume matching problem of two kinds of technical measurement through rigid positioning components, space calibration mechanism and deformation compensation design, and reduces the space correspondence error to less than 5%.

A device for in-situ acquisition of hydrothermal parameters of frozen soil subgrade using thermal pulse-frequency domain reflection technology belongs to the field of frozen soil subgrade monitoring technology. It includes an HP-FDR composite probe for acquiring soil hydrothermal parameters; a data acquisition and processing module for processing the data acquired by the HP-FDR composite probe; a power supply module connected to and supplying power to both the HP-FDR composite probe and the data acquisition and processing module; and a fixing device to fix the HP-FDR composite probe in the frozen soil subgrade. This invention solves the problems of complex operation and long time consumption in traditional frozen soil subgrade hydrothermal parameter measurement methods, achieving high-precision, in-situ, synchronous, real-time, continuous, and reliable hydrothermal parameter monitoring to meet the needs of highway construction and maintenance in frozen soil areas; it also solves the problem of asynchronous measurement of moisture and temperature, which cannot accurately reflect the coupling relationship between the two, ensuring accurate assessment of the stability of frozen soil subgrades.

This invention provides a method for heat pipe placement based on the grading of permafrost thaw settlement and the distribution of temperature fields. First, it objectively analyzes the weighting of indicators using the entropy method and combines this with an extension cloud model to determine the thaw settlement level. Then, it uses coupled hydrothermal numerical simulation to analyze the temperature field distribution at each level, and finally analyzes the heat pipe placement parameters based on the simulated temperature field results. This invention can more comprehensively classify thaw settlement levels, simulate the temperature field of different roadbed levels, accurately place heat pipes, reduce heat pipe costs, and improve the effectiveness of heat pipes. It is more suitable for areas with complex distributions of road thaw settlement levels and has practical engineering value and reference significance for reducing road thaw settlement damage, improving the efficiency of heat pipe use, and preventing roadbed diseases in extremely cold permafrost regions.

This invention relates to an all-weather permafrost environment monitoring device and its construction method, specifically a permafrost environment measurement device and its on-site construction method. It aims to overcome the problems of existing permafrost environment monitoring devices, such as limited functionality, low integration, inconvenient deployment, and inaccurate positioning. The invention utilizes a soil temperature sensor to acquire soil temperature, a soil moisture sensor to acquire soil water content, and a snow depth sensor to acquire the snow cover depth on the soil surface. A data acquisition module is connected to the snow depth sensor, soil temperature sensor, and soil moisture sensor respectively. The sensor data is sequentially filtered, amplified, and converted from digital to analog to generate digital signals. The main controller module processes the digital signals to obtain the snow cover depth, soil temperature, and soil water content. The beneficial effects include effectively avoiding mutual interference between the two types of sensors, ensuring the accuracy of data for each monitoring element, and significantly improving overall measurement accuracy.

The utility model discloses a frozen soil on -the -spot rapid detection device, especially relates to frozen soil detection technical field, including sampling mechanism, sampling mechanism top fixedly connected with drive arrangement no.

The application discloses a kind of preparation method and system of gradient freeze-thaw simulation material, the method is first according to simulation demand to determine target gradient parameter;Then design and prepare by base material, phase change material, heat conduction enhancer and moisture regulator constitute multilayer composite material, by adjusting each layer component to form phase change temperature, heat conduction performance and the controllable gradient of water content in material interior;Finally, the gradient material sample of assembled good cooperates with the preset gradient temperature control program, drives sample to occur non-uniform freeze-thaw.The application overcomes the defect that traditional homogeneous material cannot simulate freeze-thaw gradient effect in nature, realizes the high-precision, high-efficiency reproduction of temperature field, moisture field coupling, simulation error is small (≤±1.5 DEG C), and can be widely applied to frozen soil engineering, slope stability, environmental migration and agricultural freeze damage prevention and other fields of physical model test.

This utility model relates to a monitoring and early warning device for frost damage in permafrost tunnels in high-altitude and cold mountainous areas, belonging to the field of tunnel monitoring technology. It includes a data analysis system and at least one set of monitoring devices installed circumferentially along the tunnel cross-section. The monitoring devices include multi-point displacement gauges extending into the surrounding rock, soil thermometers and hygrometers, a series of thermometers, concrete strain gauges installed in the secondary lining, and a double-membrane earth pressure cell installed between the primary support layer and the secondary lining. The soil thermometers, hygrometers, concrete strain gauges, and double-membrane earth pressure cell are located on the same axis. The data analysis system is used to collect and analyze data from the multi-point displacement gauges, soil thermometers, hygrometers, thermometers, concrete strain gauges, and double-membrane earth pressure cell and issue early warnings. It can monitor the temperature field, moisture field, and frost heave deformation of tunnels in high-altitude and cold regions in real time, and can achieve multi-parameter coupling in permafrost tunnel monitoring.

A measurement device and method for thermal characteristics of frozen soil based on a thermal pulse method, comprising heating the cylindrical heating probe with the heater at a constant power; the first temperature probe detects the temperature of the cylindrical heating probe and uploads it to the cloud via the transmission unit, while data recorder displays the temperature data of the first temperature probe and the second temperature probe in real-time; the temperature of the cylindrical heating probe is maintained at a constant level; by heating the frozen soil sample with the cylindrical heating probe, the temperature breakthrough curve of the frozen soil sample is obtained, then the volumetric diffusivity and volumetric thermal conductivity of the frozen soil sample is obtained. This invention can effectively keep the maximum spatial temperature below the freezing point, thereby enabling the estimation of the overall thermal characteristics of quartz sand and ice content.

The application discloses a permafrost water and heat state simulation method and system based on a physical model, and relates to the technical field of permafrost regions engineering. The method comprises the following steps: obtaining meteorological driving data and land surface characteristic data; constructing a numerical model of a permafrost water and heat process by taking into account the freezing and thawing process of permafrost and the soil ice action by using the land surface characteristic data; preparing boundary constraint conditions of the numerical model according to the meteorological driving data and existing temperature field data; and driving the numerical model to simulate the permafrost water and heat state of the land surface characteristic data by using the meteorological driving data, constraint condition data and key vegetation and soil parameters, so as to obtain a sample set composed of key permafrost water and heat information. The application breaks through the dependence of the existing model on data and structure, meets the multi-scale application demand of permafrost regions, and finally can generate a high-quality meteorological driving and boundary constraint condition data set suitable for permafrost simulation in unobserved regions.

The utility model discloses an earthworm seedling cultivation equipment, it includes ventilation subassembly, ventilation subassembly includes protective cabin, the bottom of protective cabin inner chamber is connected with the cultivation cabin through bolt fixing, the inside of cultivation cabin is provided with the breeding bed, the top of breeding bed is provided with the crushing subassembly, crushing subassembly includes main screw and vice screw, this kind of earthworm seedling cultivation equipment, protective cabin bottom integration double -layer sleeve pipe, cold air passes through double -layer sleeve pipe from the bottom and enters, the sleeve end is equipped with the deflector, makes the airflow even dispersion, avoids with the top cover direct contact, reduces the condensate water generation, secondly, the main gear is driven with the motor, and the main screw and vice screw reverse rotation are driven through the from gear of staggered engagement, realize frozen soil - forage synchronous crushing, reduce the mixed evenness standard deviation, and the torque peak value is reduced simultaneously to the double screw asymmetric layout, and the traditional crushing mechanism is more energy - saving.