146 results about "Permafrost Region" patented technology

The invention discloses a permafrost region roadbed layering space-time correlation prediction method based on a graph neural network. The method comprises the following steps: providing multi-dimensional time sequence monitoring data; establishing a space adjacent edge in the horizontal direction and an interlayer coupling edge in the vertical direction, and generating a weighted graph with a weight; cleaning, aligning and standardizing the data, and combining the data into a node feature tensor; performing graph convolution operation based on the weighted graph to obtain a spatial feature sequence; performing time coding operation to obtain space-time coupling characteristics; obtaining an evolution law, and obtaining a roadbed deformation prediction result; and constructing a loss function for parameter adjustment based on the difference between the roadbed deformation prediction result and the real settlement value and the deviation degree between the roadbed deformation prediction result and the physical law. According to the method, space-interlayer-time coupling information is utilized at the same time, the deformation prediction precision and advance of the highway subgrade in the permafrost region are remarkably improved, and the method is suitable for a real-time monitoring and early warning system.

The invention relates to a permafrost region monitoring method and device based on digital twinning, computer equipment and a medium. The method comprises the following steps: acquiring a hydrogeological model of a permafrost region and multi-source state data acquired from a road full section of the permafrost region; combining the preprocessed multi-source state data and the hydrogeological model to obtain a physical model of the permafrost region, and coupling the physical model, a pre-trained data model and a neural network model to obtain an initial digital twinborn model; driving the initial digital twin model to perform virtual mapping to obtain mapping state parameters; based on the mapping state parameter and a first actual state parameter of the permafrost region, performing reliability evaluation on the initial digital twinborn model to obtain an evaluation result; and when the evaluation result shows that the initial digital twinborn model is reliable, obtaining the digital twinborn model so as to monitor multiple hydrological parameters of the permafrost region by using the digital twinborn model. According to the method, the underground water in the permafrost region can be comprehensively and accurately monitored.

The invention relates to a deep and thick high-temperature permafrost region highway foundation bearing capacity enhancing method which comprises the following steps: detecting the bearing capacity of a permafrost foundation through static sounding to obtain the spatial distribution characteristics of the bearing capacity of an original-state foundation; the spatial distribution characteristics of the bearing capacity of the undisturbed foundation at least comprise a bearing capacity mean value, a bearing capacity range and a bearing capacity decline ratio; establishing a mapping model at least based on the spatial distribution characteristics of the original-state foundation bearing capacity and the shallow foundation enhancement mode; based on the mapping model, according to the spatial distribution characteristics, obtained through detection, of the original-state foundation bearing capacity, the shallow foundation strengthening mode is determined, and the shallow foundation strengthening mode comprises a structural strengthening measure, a material strengthening measure and a hydrological regulation and control strengthening measure and is used for improving the overall bearing performance of the foundation and restraining permafrost degradation; the structural reinforcing measure at least comprises the steps that a composite bearing structure system is constructed in a shallow foundation, and the mechanical property of the whole foundation is improved by enhancing the bearing capacity of a local area of the foundation.

The invention discloses an in-situ solidification construction method for a highway shallow foundation in a water-rich section of a permafrost region. The in-situ solidification construction method comprises the following steps: step 1, preparation at the early stage of construction; secondly, steel sheet pile enclosure water insulation is conducted; thirdly, in-situ soil solidification construction is conducted; fourthly, dynamic compaction encryption treatment is conducted; step 5, quality detection and molding acceptance inspection; and step 6, subsequent environmental protection and safety guarantee. Three dimensions of a steel sheet pile waterproof technology, a high-weather-resistance composite curing material in-situ curing technology and a dynamic compaction technology are integrated, and a set of systematized and standardized construction scheme is formed. According to the multi-dimensional combined method, the foundation treatment effect is improved, the comprehensiveness and pertinence of construction are enhanced, and a more effective solution is provided for road foundation treatment in the water-rich section of the permafrost region.

The invention discloses an active layer depth identification method based on an envelope fusion algorithm, and belongs to the technical field of seasonal frozen depth survey. The method comprises the following steps: optimizing survey line arrangement and radar frequency through field survey and ground temperature data, and collecting data by using a ground penetrating radar; performing background removal, gain compensation, band-pass filtering and time-depth conversion preprocessing on the data; then, a gravity center method and an edge detection method are adopted to extract a bottom interface track, and noise and abnormal values are effectively suppressed according to self-adaptive weighted fusion of signal definition and continuity; and finally, carrying out cross validation and error correction by taking the earth temperature 0 DEG C isotherm depth as a reference, outputting a continuous and smooth interface fusion curve with centimeter-level precision, and calculating the depth of an active layer. According to the method, the high-efficiency and lossless advantages of the GPR are kept, meanwhile, the limitation of traditional interpretation precision is broken through, and a practical technical scheme which can be directly used for designing parameter values is provided for engineering investigation of the permafrost region.

The invention discloses self-adaptive variable-diameter drilling equipment for a high and cold frozen soil region and a stable-temperature construction method, and relates to the technical field of constructional engineering construction equipment, in particular to the self-adaptive variable-diameter drilling equipment for the high and cold frozen soil region, the self-adaptive variable-diameter drilling equipment comprises a main body, and the top of the main body is fixedly connected with a drilling assembly; a multi-blade structure is utilized, each blade is provided with an independent electric heating wire, the electric heating wires can preheat the blades in the drilling process, the blades are prevented from being embrittled due to low temperature, the service life of the drill bit is prolonged, the multiple telescopic auxiliary rotary drill bits are evenly distributed around the main drill bit, and the drilling efficiency is improved. The telescopic rod controls the auxiliary rotary drill bit to automatically adjust the telescopic length of the auxiliary rotary drill bit according to the hardness of the frozen soil layer and the drilling depth, so that the total diameter of the drill bit is changed to meet the drilling requirements of different diameters.

The invention relates to an eDNA method for identifying bumblebee honeycombs in permafrost regions of Qinghai-Tibet Plateau. The eDNA method comprises the following steps: S1, positioning observation sample belts and arranging sampling points on the basis of multi-source data in combination with a Bayesian hierarchical model; s2, performing deep freezing and complete excavation on matrixes around and inside all the sampling points; s3, stratified sampling and anti-degradation treatment are carried out, and a spatial attribute database is established; s4, extracting and purifying eDNA (enhanced deoxyribonucleic acid); s5, determining a nest host based on PCR amplification, high-throughput sequencing and sequence comparative analysis; and S6, constructing a Bayesian hierarchical model in combination with biological information, and judging honeycomb characteristics. The method is simple, rapid and low in cost, not only is suitable for Qinghai-Tibet Plateau permafrost regions, has the core advantages of non-destructiveness and high sensitivity, but also is also suitable for underground insect nest identification research in other environment sensitive regions or regions difficult to physically explore in principle, and has wide application prospects. The method is especially suitable for monitoring rare, secret or difficult-to-approach organisms.

The application discloses a simulation method and system for engineering geological survey in alpine permafrost regions based on digital twinning, and relates to the technical field of engineering geological survey.The method comprises the following steps: obtaining multi-source heterogeneous data to construct a digital base; constructing a thermal-water-force-fracture multi-field coupling physical model based on the phase field theory; constructing a generative adversarial network as a time reversal engine to learn the mapping from the current state to the past state; inputting the current measured state into the time reversal engine to generate a historical evolution sequence, and comparing the historical evolution sequence with actual geological relics to dynamically calibrate model parameters; loading future climate scenarios to perform forward prediction, and fusing monitoring data through Kalman filtering to form a closed-loop corrected digital twin; and outputting a risk thermodynamic map, a fracture connectivity atlas and an engineering warning level based on the prediction result.The method can realize dynamic calibration and real-time early warning of the engineering geological model in the permafrost region, and improve the accuracy and calculation efficiency of the prediction of engineering geological disasters in cold regions.

The application discloses a kind of anti-frost heaving pile foundation for installing photovoltaic support in frozen soil area and its construction method, belong to frozen soil area pile foundation technical field.The anti-frost heaving pile foundation includes photovoltaic support, prefabricated pipe pile, support connecting section, anti-frost heaving section and fixed section, support connecting section is located above prefabricated pipe pile for connecting photovoltaic support and pile foundation;Anti-frost heaving section is filled with anti-frost heaving material to eliminate the influence of soil frost heaving on engineering, and plays the role of anti-soil frost heaving;Fixed section is located at the lower end of prefabricated pipe pile to improve pile body stability and uplift resistance;The construction method includes: hole digging, hole cleaning, pouring core concrete, installing pile shoe positioner, vibration pile planting, installing centering positioner, filling anti-frost heaving material, sleeve and pouring filling core concrete etc.The application solves the problem of time and labor consumption of the original pile around frost heaving soil replacement technology, and the use of prefabricated pipe pile can save the time spent on pile maintenance, thereby speeding up the construction progress.

The present application relates to a kind of permafrost region oil and gas pipeline's pipe embankment structure and intelligent control method.The pipe embankment structure includes fill layer, pipeline protection layer, crude oil pipeline, gas pipeline, intelligent control system, fine sand layer, heat preservation layer, heat flow sensor, drainage ditch, benchmark heat flow sensor.By reasonable layout crude oil pipeline (positive temperature operation) and gas pipeline (negative temperature operation), in combination with heat flow sensor real-time monitoring energy flow, and trigger abnormal alarm when energy abnormal change.At the same time, using intelligent control system real-time acquisition pipeline and frozen soil layer temperature data, dynamically adjust the operating temperature of gas pipeline, optimize heat effect control.The technical scheme provided by the present application can be reasonably laid out and dynamically regulated, effectively govern the degradation of underlying permafrost under crude oil pipeline, while slowing down the frost heaving deformation of soil around gas pipeline, thereby significantly improving the thawing and frost heaving problems caused by oil and gas pipeline in permafrost region.

The application provides a method for improving the recovery of natural gas hydrates in permafrost regions. The method comprises the following steps: (1) discharging free gas from the target permafrost region natural gas hydrate reservoir by depressurization, so that the reservoir temperature of the target permafrost region natural gas hydrate reservoir is less than 0 DEG C and greater than or equal to -6 DEG C, and the reservoir pressure reaches 0.8-1.2 times the phase equilibrium pressure of the natural gas hydrate; (2) injecting a mixed gas of CO2 and H2 into the target permafrost region natural gas hydrate reservoir for multiple rounds of throughput sweeping; wherein, between each round of throughput sweeping, huff and puff is carried out, and the temperature of the target permafrost region natural gas hydrate reservoir is maintained at less than 0 DEG C and greater than or equal to -6 DEG C; (3) after the throughput sweeping is completed, injecting CO2 into the target permafrost region natural gas hydrate reservoir for sweeping to recover free H2 and for geological storage of CO2. The method can significantly improve the recovery of natural gas in permafrost regions, effectively ensure the stability of the reservoir, and achieve geological storage of carbon dioxide.

The invention relates to a hot rod effective power evaluation method based on spatial distribution characteristics of a soil body temperature field, and is suitable for permafrost region engineering. The method comprises the following steps: selecting a hot rod which works stably, arranging temperature measuring holes on a horizontal section of a vertical axis in the middle of an evaporation section according to a near field, a middle field and a far field, and obtaining soil body temperatures T at different radial distances r; based on the steady-state heat conduction theory, regression analysis is carried out on measured data, a mathematical model T = C1 * ln (r) + C2 is constructed, and a coefficient C1 is solved; and combining the heat conductivity coefficient lambda of the soil body with the effective length L of the hot rod, and calculating the effective refrigeration power of the hot rod on the soil body by utilizing a formula Q =-2pi lambda LC1. The method does not need to pre-embed a sensor, does not interfere with the operation of the hot rod, and can include the contact thermal resistance influence between the hot rod and the soil body. The method has the advantages of high measurement precision, low cost and the like, and realizes in-situ and quantitative evaluation of the actual refrigeration efficiency of the existing engineering hot rod.

This utility model discloses a heat-insulating and ventilated composite structure for roadbed in permafrost regions of plateau areas. It includes a permafrost foundation, with ventilation mechanisms installed inside each foundation for road cooling. These mechanisms include ventilation ducts laid on the upper surface of the permafrost foundation, each duct connected to a connecting pipe. Protective netting is installed at the ends of the ventilation ducts. By installing heat-conducting rods and heat-dissipating fins inside the ventilation and connecting pipes, heat from the precast concrete slab and its surroundings can be quickly transferred into the ventilation and connecting pipes. Furthermore, heat dissipation is rapid while the ventilation ducts are ventilating, reducing the impact of roadbed heat on the permafrost foundation. By installing concrete pillars inside the permafrost foundation and laying precast concrete slabs on top of these pillars, the load-bearing capacity is increased, preventing large vehicles from squeezing the roadbed and causing damage to the ventilation ducts.

The invention provides a self-heating anti-freezing drainage pipeline system for a plateau permafrost region and a control method of the self-heating anti-freezing drainage pipeline system, and belongs to the technical field of engineering drainage in cold regions. According to the self-heating anti-freezing drainage pipeline system for the plateau permafrost region and the control method of the self-heating anti-freezing drainage pipeline system, the self-heating anti-freezing drainage pipeline system comprises a self-heating pipeline module, an energy supply module and an intelligent control module, and the self-heating pipeline module comprises a pipeline body and an integrated electric heating layer. By arranging the pipeline system composed of the self-heating pipeline module, the energy supply module and the intelligent control module, the integrated effect of energy self-supply, intelligent sensing and active anti-freezing in the plateau frozen soil area without the power grid is achieved, the unfreezing rate is calculated through captured data through configuration of the intelligent control module, and the unfreezing efficiency is improved. The parameter dynamically reflects the efficiency of freezing and melting, so that the system can accurately put energy based on the efficiency, and the problems of energy dependence and anti-freezing reliability are fundamentally solved.

The invention relates to the technical field of outdoor equipment, in particular to a high-frequency impact type tent peg rapid fixing and pulling device suitable for a plateau frozen soil area. The device comprises an equipment body which is internally provided with a hydraulic cavity, a control cavity and a sealing cavity; the high-frequency impact unit is composed of a transmission rod and two first pistons, the top end of the transmission rod extends into the sealing cavity filled with nitrogen, and an impact head with a detachable limiting rod is installed at the bottom end of the transmission rod. The control unit is composed of two second pistons which are combined through a connecting column; the hydraulic mechanism is connected with all the cavities through a pressurizing pipe and a liquid return pipe which are connected in parallel, connecting pipes are arranged between the cavities, and high-frequency reciprocating motion of the impact head under hydraulic driving is achieved. And in combination with a self-adaptive supporting seat at the bottom of the equipment, the ground nail is quickly pulled out from frozen soil by utilizing upward thrust of high-frequency impact, so that the effect of one machine with two purposes is achieved, the problems of difficulty in pulling and low efficiency in a plateau frozen soil environment are effectively solved, and the device has the advantages of simplicity and convenience in operation, strong force, high efficiency, high adaptability and high reliability.

The invention relates to a lithology identification method for a hydrate reservoir in a frozen soil region. The method comprises the following steps: collecting hydrate drilling well logging data in a frozen soil region, and establishing a sample set; performing windowing processing, standardized preprocessing and lithology label coding on the sample set to form a sequence sample suitable for deep learning; constructing a hybrid neural network model combining a convolutional neural network and a long-short term memory network (CNN-LSTM), extracting local spatial features in the logging data by using a convolutional layer, and extracting time sequence features of lithologic evolution by combining an LSTM layer; key hyper-parameters of the model are globally optimized based on a Bayesian optimization algorithm, the number of convolution kernels, the number of LSTM units, the Dropout proportion and the learning rate are included, and the classification performance and generalization ability of the model are improved; and utilizing the trained optimal CNN-LSTM model to carry out lithology automatic identification and classification on the frozen soil region hydrate reservoir. According to the method, through combined extraction of convolution and time sequence features, the recognition precision and robustness of complex lithology of the hydrate reservoir in the permafrost region are effectively enhanced, meanwhile, the Bayesian optimization method is introduced to improve the model parameter adjustment efficiency and stability, and reliable technical support can be provided for fine description and resource evaluation of the hydrate reservoir.

The application discloses a kind of frozen soil area pumping drainage type pressure steam pre-melting method and system, comprising: surveying the deformation of surface, selecting frost heaving and uneven settlement disease serious road section, determining the depth and range of soil ice layer;Steam injection hole is arranged above the soil ice layer treatment layer on the side of roadbed slope, pumping drainage hole is arranged in the center of roadbed;Steam generator is heated and injected into soil ice layer, while pumping drainage, steam target melting ice is realized;While steam heating and pumping, monitoring pre-melting progress and effect are carried out using geophysical prospecting method.The high-temperature steam is transported to the interior of soil body by steam pipe, when high-temperature steam contacts with low-temperature soil body, heat conduction occurs, solid ice in the interior of frozen soil melts, after all the ice-rich frozen soil and soil ice layer in the climate warm and humid influence range are melted, the melting range is accurately controlled by pumping drainage, the bearing capacity of foundation is improved, and the possible deformation of frozen soil melting settlement is reduced.

This invention relates to the field of natural gas pipeline safety treatment technology, and provides a method, apparatus, electronic device, and storage medium for obtaining frost heave in permafrost areas. The method includes: determining a surface temperature function; determining a constant temperature at a first depth below the surface; constructing a finite element model of the permafrost region calculation area based on the surface temperature function, the first depth, and the constant temperature; applying boundary conditions to the finite element model to obtain the time it takes for a freezing front to reach the lower edge of each grid layer in an M-layer grid from the surface down within the time range of the surface temperature function, as well as the temperature gradient at the location of the freezing front; and determining the frost heave based on the time and the temperature gradient. This method enables rapid and accurate determination of frost heave, providing fundamental data for the safety assessment of buried pipelines.

This invention discloses a remote sensing classification method and device for periglacial landforms. The method includes: establishing remote sensing classification rules for periglacial landforms, dividing periglacial landforms into primary and secondary periglacial landform types; collecting remote sensing images and digital elevation model data of the target area in permafrost regions at various resolutions, and performing radiometric calibration and atmospheric correction on the remote sensing images; performing first-scale segmentation and second-scale segmentation on the processed data to generate two-level image object layers, with the first-scale segmentation generating a primary image object layer corresponding to the primary periglacial landform type and the second-scale segmentation generating a secondary image object layer corresponding to the secondary periglacial landform type; extracting and analyzing features for each image object in the primary and secondary image object layers; and, based on the remote sensing classification rules for periglacial landforms, classifying the image objects in the primary and secondary image object layers into the corresponding primary and secondary periglacial landform types, respectively, and outputting a remote sensing classification map of periglacial landforms.

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.

The utility model provides a frozen soil area landslide key part temperature and humidity field long-term dynamic monitoring device, and relates to the technical field of intelligent equipment, and the device comprises a measurement control host which is connected with a first PVC hard pipe and a second PVC hard pipe through a cable; the first PVC hard tube and the second PVC hard tube are respectively provided with a power supply electrode and a measuring electrode; third containing holes are formed in the second PVC hard pipe at intervals of a third preset distance, and a temperature measuring probe is contained in each third containing hole. The corresponding electrodes are supported by the two PVC hard tubes, the temperature measuring probe is buried underground to work for a long time, the water content profile is converted into the resistivity profile based on an indoor soil test, and in-situ dynamic long-term monitoring of the soil water content profile and the temperature of the key part of the landslide is achieved. The device can help to analyze soil freeze-thaw states and daily freeze-thaw cycle processes of different parts of the landslide and moisture infiltration processes of key parts of the landslide under rainfall conditions and freeze-thaw conditions, and is simple in structure, efficient and reliable.

The application provides a design method of a ventilation pipe foundation in permafrost regions based on the principle of heat balance, aiming to maintain the heat balance of the lower permafrost under the foundation and ensure its long-term thermal stability. The method involves collecting meteorological data, soil physical parameters, and permafrost upper limit and ground temperature distribution information to assess whether additional protection measures are needed and to determine the burial height of the ventilation pipe foundation. Based on the selected ventilation pipe configuration, the corresponding wind speed calculation formula is used to calculate the wind speed in the pipe, and the convective heat transfer coefficient is determined. Combined with the convective heat transfer coefficient and economy, the pipe diameter is determined. Further determine the cooling radius and the best operation mode of the ventilation pipe foundation to ensure the heat balance of the foundation bottom and effectively protect the lower permafrost under the foundation. The design method is simple, fast and accurate, and has important engineering application value and wide applicability.

The invention relates to the technical field of engineering monitoring in a frozen soil region, and particularly discloses a remote monitoring and diagnosis system for a working state of a hot rod in a frozen soil region based on edge calculation, which comprises the following steps of: constructing a thermodynamic state matrix with a space-time correlation characteristic by deploying a multi-source sensor to synchronously collect temperature, pressure and environment wind speed data of a key part of the hot rod; a feature extraction method combining multi-scale decomposition and physical constraint is adopted to generate nonlinear dynamic response features capable of distinguishing environmental interference and real faults; a multi-dimensional diagnosis vector is constructed based on phase-space reconstruction and trajectory analysis, and comprehensive health degree parameters are generated through feature level fusion in combination with real-time environment parameters; a health state classification model with a fuzzy boundary is established, and four-level health level judgment considering the duration effect is achieved; through correlation analysis of environment disturbance and state evolution, an edge-cloud collaborative adaptive optimization mechanism is constructed.

The invention discloses a permafrost region plateau railway ventilation pipe roadbed convective heat transfer coefficient calculation method, which comprises the following steps: S1, arranging a wind speed sensor at the slope toe of a railway roadbed to obtain wind speed data; s2, calculating the average wind speed in the ventilation pipe by considering the wind loss according to the measured data of the external wind speed; s3, the flowing state of air fluid in the ventilation pipe is judged; s4, according to the flowing state, the length of the hot inlet section of the ventilation pipe and the average Nusselt number are calculated; and S5, calculating the convective heat transfer coefficient between the inner wall of the ventilation pipe and the air. According to the method, air fluid in the ventilation pipe is divided into three flowing states, the ventilation pipe is divided into a heat inlet section and a heat full development section, factors such as time, air speed, air thermophysical property, seasons and the position in the ventilation pipe are considered when the convection coefficient is calculated, and a clear analytical formula is provided; and a simplified hypothesis that a convective heat transfer coefficient is defined as a constant in the conventional design is avoided.

The utility model relates to the technical field of wetland moss collection, and discloses a permafrost region wetland moss collection device which comprises a supporting plate, supporting legs are fixedly connected to the bottom of the supporting plate, a handrail is fixedly connected to the top of the supporting plate, and a collection box is arranged at the top of the supporting plate. A first electric sliding rail is fixedly connected to the bottom of the supporting plate, a second electric sliding rail is arranged at the bottom of the first electric sliding rail, a movable collecting mechanism is arranged at the top of the supporting plate, and an auxiliary collecting mechanism is arranged at the bottom of the second electric sliding rail. A second motor works to enable a residual gear to rotate, left-right reciprocating motion of a plate cutting frame is conveniently achieved, the moss sampled in the plate cutting frame is shaken, soil and the moss are separated, and the height of a drill bit is conveniently adjusted through rotation of a first bevel gear.

The invention discloses a water source conservation function evaluation method suitable for a high and cold frozen soil region, and belongs to the field of water source conservation function evaluation.The method comprises the steps that a monitoring network is laid in a drainage basin of the high and cold frozen soil region, and monitoring data are collected; the monitoring data comprises meteorological data, frozen soil data, hydrological data and vegetation and underlying surface data; improving the VIC frozen soil hydrological model by using the monitoring data; determining constraint conditions of the improved VIC permafrost hydrological model based on a permafrost characteristic water source conservation mechanism, and simulating each component of water balance of the high and cold permafrost region drainage basin by using the improved VIC permafrost hydrological model; and based on each component of water balance of the drainage basin of the high and cold frozen soil region, calculating the water conservation amount by using a water balance equation, and obtaining the water conservation capability according to the water conservation amount to complete water conservation function evaluation. According to the invention, key processes such as frozen soil thermal conductivity overestimation abnormity and accumulated snow sublimation effect supplementation are eliminated, and the simulation precision of the hydrothermal transmission process is improved.

The invention provides a quick hot melt sampling system for a frozen soil region, the quick hot melt sampling system for the frozen soil region comprises a drilling machine assembly, a temperature adjusting assembly and a sampling assembly, the drilling machine assembly comprises a drill bit and a drill rod, the drill bit is connected with the drill rod, the drill bit is provided with a sampling groove, and the sampling groove is communicated with the temperature adjusting assembly; the sampling groove is formed in the drill bit, an opening of the sampling groove is located in the surface of the drill bit, the temperature adjusting assembly comprises a heating part, the heating part is connected with the drill bit and used for heating the drill bit, and the sampling assembly comprises a sampling pump and a sampling pipeline. The first end of the sampling pipeline is connected with the sampling groove, the second end of the sampling pipeline is connected with the sampling pump, and the sampling pump is used for extracting a sample in the sampling groove. The quick hot melt sampling system for the frozen soil region can reduce the sampling difficulty and ensure the sample quality.

The application discloses a kind of frozen earth area highway subgrade thawing settlement measurement method and system, it is related to data measurement management technical field, method includes: obtaining to be measured subgrade area, obtain multiple measurement directions, form the node sequence of each measurement direction, obtain blank measurement area;Obtain first time second time, obtain the first subgrade height sequence of first time, obtain the second subgrade height sequence of second time, obtain current subgrade height sequence;Obtain current trend value, obtain first historical trend value, obtain second historical trend value, obtain first difference, obtain second difference;If first difference and second difference are less than preset threshold value, according to each node sequence current subgrade height sequence, obtain the measurement result of each blank measurement area.The application has the advantages of accurate prediction, high-precision measurement and adaptive measurement.

The invention relates to a permafrost region highway subgrade deformation monitoring device which comprises a total station, a heat preservation cylinder and supporting legs. A laser centering device is arranged at the centroid position of the bottom face of the heat preservation barrel, a mounting base is arranged in the heat preservation barrel, a threaded shaft in threaded connection with the mounting base is arranged in the heat preservation barrel, and a driving shaft capable of driving the threaded shaft to rotate is rotationally connected to one side of the heat preservation barrel. The method has the advantages that the total station can be leveled without standing until the temperature of the total station is balanced with the ambient temperature, and the total station is started for monitoring. When a monitoring position is replaced, the total station can be directly stored in the heat preservation cylinder, after the total station is carried to a target point position, the laser centering device is firstly used for centering, then the driving shaft and the threaded shaft are used for driving the total station to move upwards, and then the monitoring work can be continued. And the steps of dismounting and mounting are omitted, so that the working time of the total station in a low-temperature environment is effectively shortened, and the total station can be prevented from being damaged due to long-time low-temperature environment.

The invention relates to the technical field of road engineering, and discloses a dehumidification and heat exchange method and system for a permafrost region roadbed and electronic equipment.The dehumidification and heat exchange method comprises the steps that a ventilation pipe is arranged in a roadbed structure, the porosity of the ventilation pipe is not smaller than 90%, the water permeation rate is larger than 1.0 L / (s.m), and the ventilation pipe is connected with a driving device; arranging a temperature and humidity monitoring unit in the roadbed; collecting temperature and humidity data of the roadbed and the environment, and calculating to obtain a temperature difference delta T and a water potential difference delta psi of the roadbed and the environment; judging whether in a warm season, if in the warm season, judging whether a warm season starting condition delta T is greater than or equal to 3 DEG C or delta psi is greater than or equal to 30kPa is met, and if in a non-warm season, judging whether a non-warm season starting condition delta T is greater than or equal to 2 DEG C or delta psi is greater than or equal to 50kPa is met; and when the warm season starting condition or the non-warm season starting condition is met, the driving device is controlled to be started, and the ventilation pipe is made to operate. Uniform heat dissipation and dynamic ventilation are achieved through the ventilation pipes, the uniformity of a roadbed temperature field is remarkably improved, the active drainage function of the ventilation pipes is combined, local water accumulation is effectively eliminated, and the hidden danger of frost heaving and thaw collapse is avoided.