98 results about "Ground temperature" patented technology

A porous media grouting test system and method taking temperature effects into consideration. The system comprises a porous media formation simulation model (1), a grouting system (2), a water level adjustment system, a formation temperature control system and a data analysis system, wherein the porous media formation simulation model (1) is used for simulating a porous media formation; the water level adjustment system and the formation temperature control system are used for simulating the conditions of different water saturation levels and different water temperatures and ground temperatures; and the data analysis system is used for comparing different time-series data collected by sensors such as a temperature sensor and a pressure sensor with data such as temperature data and pressure data that is obtained by means of coupled solving of a heat transfer equation and a momentum equation, so as to verify and analyze a grouting diffusion path. Free simulation of different water saturation levels is realized by means of a water level adjustment system, and simulation of different ground temperatures is realized by means of a formation temperature control system, thereby realizing the research on grouting diffusion under different water levels and different water temperatures and ground temperatures.

The invention relates to the technical field of ground source heat pumps, and discloses a ground source heat pump buried pipe zoning layout and cold and heat balance control method which comprises the following steps that the current three-dimensional ground temperature field state of the area where a ground source heat pump buried pipe is located is obtained; predicting a future state sequence of the ground temperature field under different control strategies in a future prediction time domain; solving to obtain an optimal control sequence based on a multi-objective optimization function which aims at minimizing the comprehensive operation cost of the system in the prediction time domain; the multi-objective optimization function at least comprises an energy consumption item representing system short-term operation energy consumption and a balance item representing a ground temperature long-term balance state; and executing the first control action in the optimal control sequence. The prediction model constructed by the invention can combine a physical rule with a data residual continuously learned from actual operation, and ensures that prediction information on which a control decision depends always keeps high fidelity in long-term operation of the system.

The invention belongs to the technical field of cultivation, and discloses a small flat film heat preservation cultivation method for amorphophallus bulbifer in cold and arid areas, and the small flat film is used for covering, so that the ground temperature can be increased, and early sowing and early harvesting of the amorphophallus bulbifer are promoted. The temperature in the mulching film is 7-9 DEG C higher than that in the open field, amorphophallus bulbifer can be sown 30 days earlier, and seedlings emerge 15 days earlier. In addition, the small flat film can reduce water evaporation, prevent rainstorm scouring and keep the soil water content stable, and drought resistance and waterlogging prevention are facilitated.

The invention discloses a method for evaluating rock mass fracture freeze-thaw fracture damage risk based on surface temperature, which comprises the following steps: S1, carrying out data acquisition on a target area based on a multi-source sensor carried by an unmanned aerial vehicle platform, and obtaining fracture geometric parameters, daily surface minimum temperature, daily surface maximum temperature, daily temperature difference and fracture moisture conditions; s2, on the basis of the geometric parameters of the crack, constructing a crack frost heaving force analytical model; obtaining a quantitative relation between the stress intensity factor and the environment temperature; s3, the I-type fracture toughness of the target rock mass is measured, and the critical crack initiation temperature of the rock mass is determined; determining the number of critical freezing and thawing cycles; s4, on the basis of the daily earth surface minimum temperature, the daily temperature difference, the fracture moisture condition and the critical crack initiation temperature, the annual accumulated effective freezing and thawing cycle number is obtained; and calculating a freeze-thaw damage ratio, and carrying out risk quantification and grading. According to the invention, the problem of inaccurate evaluation caused by limitation to local monitoring and lack of an environment factor and material parameter integrated evaluation framework in the prior art is solved.

The application discloses a kind of deep melting interlayer development area rigid pile composite foundation structure design method, it is related to rigid pile composite foundation field, including the following steps: step one, in the existing rigid pile bearing capacity calculation process, front-end increase subgrade-ground temperature field analysis;Step two, increase groundwater analysis;Step three, determine the compression modulus of the soil layer of seasonal freeze-thaw layer, (water-rich) melting interlayer, permafrost layer, bearing capacity characteristic value, check the single pile bearing capacity characteristic value of different positions in the cross section of roadbed using different pile length, pile diameter, pile body stiffness material;Step four, carry out zoned unequal design, adjust pile length, pile diameter, pile body stiffness, so that the range of all pile single pile bearing capacity characteristic values in cross section is lower than design allowable value.The application effectively optimizes pile foundation design, reduces material waste, reduces engineering cost, while ensuring the safety and stability of structure.

The present invention provides a high-temperature tunnel insulation segment and a preparation method thereof, wherein the high-temperature tunnel insulation segment comprises: a concrete layer, a steel skeleton, and a plurality of triangular inserted insulation tubes; the steel skeleton is a truss structure, and the steel skeleton comprises a plurality of main bars, a plurality of double-legged stirrups, and a plurality of angled steel bars; a plurality of the main bars are arranged at intervals along the width direction of the segment, and a plurality of the double-legged stirrups are arranged at intervals along the circumferential direction of the segment, and each of the double-legged stirrups is fixed to the outside of a plurality of the main bars; a plurality of the steel bars distributed adjacently along the circumferential direction of the segment are arranged inside each of the main bars; each of the triangular inserted insulation tubes is inserted into the interior of a plurality of the main bars and is in close contact with the steel bars and the main bars. The present invention can greatly improve the insulation performance of the segment while ensuring the basic strength and impermeability of the segment.

The application belongs to the technical field of data processing, and discloses a Mars rover non-contact passability prediction method and system based on thermal inertia, which comprises the following steps: obtaining the ground temperature time sequence and environmental parameters of a target area; constructing a thermal inertia estimation model, inputting the ground temperature time sequence and environmental parameters into the thermal inertia estimation model, and obtaining the thermal inertia estimation value of the soil; constructing a thermal inertia and passability index relationship model, inputting the thermal inertia estimation value of the soil into the thermal inertia and passability index relationship model, and outputting a predicted passability index; determining the passability state level according to the predicted passability index, and generating a navigation control suggestion, so that the Mars rover passes the target area according to the navigation control suggestion of the Mars rover. The application can effectively improve the evaluation accuracy of the Mars rover passing the target area by extracting the thermal inertia estimation value of the soil of the target area to predict the passability index of the Mars rover, and ensures the driving safety of the Mars rover.

The application provides a surface temperature-based surface ground temperature remote sensing measurement method, which comprises the following steps: expanding radiation terms of bare soil and vegetation at a target pixel into Taylor series at a remote sensing surface temperature respectively, establishing a remote sensing radiation equation of the remote sensing surface temperature by taking remote sensing vegetation coverage as a weight; solving remote sensing bare soil temperature and remote sensing vegetation temperature at the target pixel by combining the remote sensing radiation equation, a relationship equation of the remote sensing surface temperature and a remote sensing component temperature; expanding radiation terms of bare soil and vegetation at a simulation grid into Taylor series at a simulation surface temperature respectively, establishing a simulation radiation equation of the simulation surface temperature by taking simulation resolution vegetation coverage as a weight; solving simulation bare soil temperature and simulation vegetation temperature at the simulation grid by combining the simulation radiation equation, a relationship equation of the simulation surface temperature and a simulation component temperature; and estimating average surface ground temperature by using a correlation model between the simulation bare soil temperature and simulation surface ground temperature and the remote sensing bare soil temperature.

The invention discloses a novel verifiable ground temperature measurement system and method, and the method comprises the steps: employing three temperature sensors, placing the three temperature sensors in a thermostatic bath before starting, taking feature points for calibration, recording three temperature reference difference values, building a difference value database, enabling the three sensors to synchronously collect real-time temperature values per second, carrying out the real-time comparison of a current difference value with the reference difference values, and obtaining a temperature difference value database; judging and confirming fault sensors exceeding the deviation range, when only one fault sensor exists, obtaining a reckoning temperature value according to the reference difference value corresponding to the fault sensor and the other two real-time temperature values, taking an average value as a measurement result, and when two fault sensors exist, directly taking the measurement value of the first sensor as the measurement result. According to the invention, three core problems of precision control, fault tolerance and maintenance cost can be solved, and continuity and reliability of ground temperature monitoring are guaranteed.

The invention provides a method, a device and equipment for predicting influence of marsh vegetation change on surface temperature, and belongs to the technical field of ecological remote sensing and climate effect evaluation. The method comprises the following steps: firstly, determining vegetation pixel distribution as a research area range in an unchanged marsh wetland distribution range; a year-by-year and multi-year average growth season data set is constructed through a maximum value synthesis and arithmetic mean method; in the grid units, the pixels are divided into a high value group and a low value group according to the multi-year average growth season leaf area indexes, the difference value between the multi-year average growth season leaf area indexes of all the pixels in the high value group and the low value group and the average surface temperature value is calculated, and then the surface temperature change degree caused by the marsh wetland vegetation coverage change is quantified; and finally, realizing accurate prediction of future surface temperature influence in combination with a vegetation change trend on a pixel scale.

The utility model relates to the technical field of wiring protection devices, and discloses a sensor wiring arrangement device for ground temperature measurement in a cold region. The device comprises a protection body and a plurality of wiring pipelines, the protection body is of a cylinder structure, and the protection body is provided with a plurality of assembly holes which are used for installing sensors, have different positions in the length direction of a cylinder of the protection body and are formed in the outer wall of the protection body. And the wiring pipeline is arranged in the solid part of the protection body, and the wiring pipeline communicates the assembly hole to the end part of the protection body along the length direction of the cylinder body of the protection body. According to the embodiment of the invention, protection can be provided for the circuit of the sensor, and the troubleshooting difficulty of determining the disconnected sensor is reduced.

The invention discloses a high ground temperature and high water pressure rock SHPB (split Hopkinson pressure bar) device capable of high-speed camera shooting and real-time shooting, which comprises an SHPB assembly, a water pressure loading assembly, a water bath heating circulation assembly and a mounting flat plate, and is characterized in that a water outlet of the water bath heating circulation assembly is connected with a water inlet hole of the water pressure loading assembly; a backflow port of the water bath heating circulation assembly is connected with a water outlet hole of the water pressure loading assembly, an endoscope is installed on the side wall of the water pressure loading assembly, a lens of the endoscope is arranged in the water pressure loading assembly, the field angle of the lens is 45 degrees, and the output end of the endoscope is connected with a special high-speed camera for the endoscope. According to the invention, changes of water pressure, temperature and impact force can be simulated in a deep rock impact ground pressure test, simulation of a test environment is realized, a test result is more practical, continuous images of a rock deformation and fracture process in the test can be obtained, and initiation, expansion and evolution rules of cracks in the whole test process can be obtained in real time.

The invention discloses a water delivery tunnel maintenance ventilation numerical simulation method considering high ground temperature and biofouling, which comprises the following steps: carrying out a biologic putrefying gas release characteristic experiment in a high ground temperature environment, fitting a biologic putrefying gas release rate equation in the high ground temperature environment, calculating the required air quantity considering biologic putrefying gas pollution in the high ground temperature environment, and calculating the ventilation quantity of the water delivery tunnel maintenance ventilation numerical simulation method considering biologic putrefying gas pollution in the high ground temperature environment. And ventilation numerical simulation of the deeply-buried water conveyance tunnel in the overhaul period. According to the method, the emission amount and the emission rule of biological decay gas pollutants including organic gas TVOC in the deeply-buried water delivery tunnel in the high-ground-temperature environment are clearly considered; determining the air volume required for purifying biological decay gas pollutants including organic gas TVOC in the deeply-buried water delivery tunnel in the high-ground-temperature environment; biological decay gas release and ventilation numerical simulation of the deeply-buried water delivery tunnel in the overhaul period under the high ground temperature environment are comprehensively considered, the development condition of an air flow field in the tunnel and the migration and distribution rule of harmful gas under the high ground temperature and biological fouling coupling condition are determined, and the method has important significance for guaranteeing ventilation safety of the complex water delivery tunnel.

The application discloses a kind of high altitude permafrost engineering disturbance area's vegetation recovery method, comprising the following steps: to meet sowing time period, turn over, supplement grass seed, sowing time period is: deep 0 cm place consecutive 10 days daily average ground temperature value is not less than first preset temperature value and deep 50~60 cm place consecutive 12 daily average ground temperature value is not less than second preset temperature value after the deadline 3~10 days;Cover multilayer covering net, until deep 0 cm place consecutive 8 days average ground temperature value is not less than third preset temperature value, remove part of covering net, only remain a layer of covering net;When grass seedling grows to 5~8 cm, remove last layer of covering net.The application is limited by the daily average ground temperature value of deep 0 cm in frozen soil disturbance area and deep 50~60 cm in frozen soil disturbance area, which helps to keep the endosperm cells inside active after seed sowing, increases the germination rate of grass seeds, and has good vegetation recovery effect.

The utility model discloses a multilayer ground temperature measuring device, which relates to the technical field of ground temperature measurement, and comprises a measurer body, a temperature measuring rod body fixedly connected to the bottom of the measurer body, and a temperature measuring fixing mechanism used for fixing the measurer body when the measurer body and the temperature measuring rod body are used for measuring temperature, through the arrangement of the temperature measurement fixing mechanism, when the measurer body and the temperature measurement rod body carry out temperature measurement work, the measurer body can be fixed through the arrangement of a first insertion column and a second insertion column, the friction force between the measurer body and the ground during use is improved, and temperature measurement errors caused by movement of a measured object can be eliminated through stable fixation; and meanwhile, the temperature measurement fixing mechanism is arranged, so that an operator can more conveniently carry out temperature measurement work, and the stability of a measured object does not need to be ensured by spending extra time and energy. The working efficiency can be improved, and the operation difficulty is reduced.

The present invention provides a method for planting a plant using a heat-shielding plate, the method comprising the steps of: preparing a heat-shielding plate by applying a polymethyl methacrylate (PMMA)-based heat shielding paint containing a heat-treated mineral-derived powder to at least one surface of a porous substrate; cutting the heat-shielding plate; forming an excavated surface by performing excavation at a location where a plant is to be planted where a plant is to be planted; arranging the heat-shielding plate around the excavated surface such that the excavated surface is exposed; and fixing the heat-shielding plate to the ground. According to the method, solar radiant heat is reflected to reduce the ground temperature, suppress evaporation of moisture, and maintain air permeability, thereby creating an environment favorable to plant growth.

The present application provides a wing hot air anti-icing control system and an air anti-icing pressure control method. The system comprises a wing anti-icing valve, a wing anti-icing pressure sensor, a wing anti-icing temperature sensor, a wing anti-icing ground temperature monitoring sensor, a wing anti-icing monitoring pressure sensor, a wing anti-icing controller, a bleed air fan valve and a flute type pipe. The wing anti-icing controller comprises independent control channels and monitoring channels, and the wing anti-icing valve comprises independent valve shutdown circuits and valve adjustment circuits. The present application can realize ground and air anti-icing, and the anti-icing is more accurate according to the wing anti-icing pressure sensor than the anti-icing according to the reference upstream bleed air temperature. In the case of single-engine bleed air anti-icing, bleed air failure or performance decline, etc., the anti-icing or maximum anti-icing can still be performed under the condition of ensuring the optimal aircraft. Therefore, the present application can not only effectively reduce energy consumption, improve economy and safety, but also has good anti-icing effect and good universality.

In recent years, global warming has caused the temperature of the earth's surface to rise, resulting in the loss of vegetation covering the surface. As the exposed ground temperature rises, the surface comes into direct contact with the hot air, causing moisture to evaporate and resulting in the loss of moisture on the surface. [Solution] The leaf collection device of the present invention solves the above problem by comprising a leaf collection device having multiple rows of rectangular introduction holes in the horizontal and vertical directions that introduce fallen leaves using multiple vertical pieces arranged at predetermined intervals in the horizontal direction and multiple horizontal pieces arranged at predetermined intervals in the vertical direction that intersect the vertical pieces.

The invention provides an aircraft thermal structure on-orbit circulation and reentry atmosphere mission profile ground temperature loading method, a three-cabin intercommunicated temperature test device is established, three temperature loading environments can be provided, a test piece can be transferred among the three test cabins through a guide rail, rapid heating and cooling required by a test are provided, and the test efficiency is improved. A temperature load environment for providing on-orbit temperature circulation and reentry atmosphere aerodynamic heat for a test piece can be simulated, and engineering requirements are met.

The application provides a deep-buried tunnel original rock temperature prediction method, which utilizes field drilling measured data, tunnel surrounding rock measured temperature and data provided by a ground temperature database to obtain the original rock temperature of the whole tunnel through Akima spline interpolation method, wherein the ground temperature database is obtained through the following steps: collecting measured data of published ground temperature drilling in a certain area, pre-processing the measured data, and then performing spatial interpolation in the area by using a general Kriging method. The method solves the problems of great difficulty, long time consumption and high drilling cost in original rock temperature prediction of deep-buried tunnels, reduces the workload and calculation time on the basis of scientifically predicting the original rock temperature of deep-buried tunnels, is more suitable, is more in line with the actual engineering conditions, and improves the accuracy of the prediction result.

The ground temperature adjusting water tank comprises a first tank body, a second tank body and a third tank body, the top of the first tank body is communicated with a main machine water supply pipeline, a tail end water supply opening is formed in one side of the main machine water supply pipeline, and a main machine water outlet is formed in the other side of the main machine water supply pipeline; a one-way differential pressure valve is arranged at the communication position of the first tank body and the main machine water supply pipeline, a sewage draining exit is formed in one side of the first tank body, and a main machine water return opening is formed in the bottom of the first tank body. Through the unique structural design of the first tank body, the second tank body and the third tank body, low-temperature water and high-temperature water are respectively supplied during refrigeration in summer, the water flow direction is changed by controlling the three-way valve, dew-point water temperature control of the high-temperature water is realized by utilizing inertia of mixed water in the water tank, and the refrigeration efficiency is improved. Proportional adjustment is replaced with a simple mechanical control method, and the equipment cost and the failure rate are greatly reduced.

The embodiment of the invention provides a high-ground-temperature tunnel ventilation cooling environment simulation test device, and relates to the technical field of high-ground-temperature tunnel construction. The high-ground-temperature tunnel ventilation cooling environment simulation test device comprises a tunnel simulation carrier, and a tunnel face is integrally formed at one end of the tunnel simulation carrier. Powder is fed into the vibration dust feeding assembly through the dust feeding bearing assembly, the high-temperature powder is fed into the dust scattering assembly through cooperation of the vibration dust feeding assembly and the temperature increasing heat transfer assembly, and meanwhile the powder fed into the dust scattering assembly is blown into the tunnel simulation carrier through cooperation of the vibration dust feeding assembly and the floating dust sowing and spraying assembly. When the ventilator body works to drive the powder in the tunnel simulation carrier to drift away, according to the characteristics of the powder and the cooperation with the thermal imaging detection component, the dynamic flow direction of the powder drifting along with the wind is obtained in real time, and the flow direction of air during cooling of the ventilator body is obtained accordingly. And a more accurate data support is provided for the ventilation cooling and dust falling environment of the actual high-ground-temperature tunnel construction.

The invention discloses a ground temperature detection device and system for a ground source heat pump system, and relates to the technical field of ground temperature detection. The device comprises a shell and three drill bits installed on the outer side of the shell, a push-pull lifting assembly and a detection assembly are arranged in the shell, and the push-pull lifting assembly is located over the detection assembly; the push-pull lifting assembly comprises a rotating disc, the rotating disc is movably arranged on the inner wall of a circular groove formed in the shell, three strip-shaped sliding holes are evenly formed in the surface of the rotating disc, and the interior of each sliding hole is connected with one end of a push-pull rod through a movable shaft. In the drilling process, the temperature detector is contained in the shell, after drilling is conducted to the designated depth, the detection device is started, the drill bit moves outwards and downwards to drive the movable bottom plate to move downwards to expose the mounting hole, the temperature detector penetrates through the mounting hole to make contact with rock stratum soil, and therefore the temperature of the soil rock stratum is measured; therefore, the temperature detector can be well protected from being damaged in the drilling process.

The invention relates to the technical field of rock mechanics engineering, and discloses a true triaxial electromagnetic loading-based osmotic pressure and temperature coupling simulation device and method.The true triaxial electromagnetic loading-based osmotic pressure and temperature coupling simulation device comprises a triaxial electromagnetic loading assembly, a test box, six dynamic sealing assemblies, an osmotic pressure assembly, a heating assembly and an acquisition assembly, the six surface openings are matched with the waveguide rod; the six groups of dynamic sealing assemblies seal gaps between the openings and the waveguide rod to form a sealed cavity; the osmotic pressure assembly is communicated with the sealed cavity, the heating assembly is arranged in the test box, and the acquisition assembly acquires experimental data; according to the structure, three-axis six-direction synchronous dynamic loading can be realized, the osmotic pressure and the temperature in the sealed cavity can be synchronously and accurately regulated and controlled in dynamic loading, and the problem that a traditional device only performs single-axis dynamic loading and cannot cooperatively simulate a multi-field coupling environment is solved; and the occurrence environment of high ground stress, high ground temperature and high osmotic pressure of deep rock mass and multi-axis and multi-direction power disturbance coupling is truly restored.

The invention discloses a design method for a rigid pile composite foundation structure in a deep and thick melting interlayer development area, and relates to the field of rigid pile composite foundations, which comprises the following steps: step 1, adding roadbed-foundation temperature field analysis before the existing rigid pile bearing capacity calculation process; 2, adding groundwater analysis; 3, determining compression modulus and bearing capacity characteristic values of soil layers of a seasonal freeze-thaw layer, a (water-rich) thaw interlayer and a permafrost layer, and checking single-pile bearing capacity characteristic values when materials with different pile lengths, pile diameters and pile body stiffness are adopted at different positions of the cross section of the roadbed; and fourthly, partition unequal-strength design is conducted, the pile length, the pile diameter and the pile body rigidity are adjusted, and the characteristic value range of the single-pile bearing capacity of all the piles on the cross section is made to be lower than a design allowable value. The pile foundation design is effectively optimized, material waste is reduced, the engineering cost is reduced, and meanwhile the safety and stability of the structure are ensured.

The present application belongs to the technical field of mining drill rods, and particularly relates to a visual automatic rod connecting and dismounting operation device and a use method. The remote visual automatic rod connecting and dismounting operation device and operation process provided by the present application solve the problem of high ground temperature being not suitable for manual field operation, and realize rock drilling operation in an on-ground centralized control room through remote control operation, without the need of underground operation. The remote visual automatic rod connecting and dismounting operation device and operation process provided by the present application solve the technical problem of repeated ineffective rod connecting or dismounting caused by the dim light in a mining roadway and the inability of an operator to closely observe the accurate positions of a drill rod and a drill bit tail of a rock drill, a drill rod and a grab rod assembly, a drill rod and a clamping rod assembly, etc. during rock drilling, and improve work efficiency. The visual automatic rod connecting and dismounting operation device and operation process provided by the present application are operated in a ground remote centralized control room, without the need of an operator being located underground for close operation, thereby reducing the safety hazards of a mining rock drilling jumbo operator.

The invention belongs to the technical field of deep ground environment mechanical testing, and discloses a device and method for simulating a deep ground high temperature-three-dimensional ground stress coupling environment through a prestressed steel strand. The device comprises a test piece main body system, a prestress applying system, a positioning reinforcing system and a monitoring feedback system. The core of the method is that based on a thermal stress formula under three-dimensional complete constraint in thermoelastic mechanics, additional thermal stress caused by ground temperature rise is calculated, and the additional thermal stress and target three-dimensional ground stress are superposed; and through a post-tensioning pre-stress technology, the superposed total stress is accurately and stably applied to an internal test piece for a long time by utilizing a retard-bonded pre-stress steel strand system and a high-strength concrete transfer medium, so that a deep high-ground-temperature and high-ground-stress coupled mechanical environment is constructed. The problems that a traditional coupling test device is high in cost, difficult to control and difficult to stabilize for a long time are solved, and accurate simulation of the deep ground high temperature-three-dimensional stress coupling environment is achieved.

The invention relates to the technical field of cement mixing piles, in particular to a construction method for improving the forming quality of a cement mixing pile, which comprises the following steps: step 1, construction preparation: carrying out climate and ground temperature evaluation on a construction area, and determining daily average temperature and frozen soil layer temperature change; building a temporary heat preservation shed, arranging an infrared or convection electric heater in the shed, and controlling the environment temperature to be more than 5 DEG C; a heat preservation sleeve layer or an electric heat tracing device is additionally arranged on key equipment such as a drilling machine, a stirring head, a slurry conveying pipeline and a cement storage tank, and temperature monitoring points are arranged; preparing ordinary Portland cement, an anti-freezing water reducing agent, silica fume and a thermal insulation blanket material; 2, surveying and setting out are conducted, specifically, high-precision setting out is conducted on the pile position through a total station or a GNSS, and it is ensured that the pile distance and arrangement meet the design requirement; according to the method, closed-loop quality control is formed in the whole construction process, and high-consistency, high-strength and high-reliability forming of the cement mixing pile in the severe cold or frozen soil environment is achieved.

The invention relates to a forest fire monitoring method and monitoring system based on a three-temperature model, and the method comprises the steps: S1, extracting an initial surface temperature feature, an initial canopy temperature feature and an initial atmospheric temperature feature according to a radiation feature, and obtaining a standard three-temperature feature set; s2, generating a temperature weight distribution parameter based on the standard three-temperature feature set, and obtaining an evapotranspiration prediction value according to the temperature weight distribution parameter; and S3, comparing the evapotranspiration prediction value with a preset fire danger threshold interval, and outputting a visual fire danger distribution map as a forest fire monitoring result. In a forest fire monitoring scene, an existing monitoring method has significant limitation; on the basis of the scheme, the regional evapotranspiration can be accurately predicted in real time in a complex and changeable forest ecological system, so that a reliable basis is provided for fire risk assessment and early warning.