20 results about "Thermokarst" patented technology

A calculation method of karst underground reservoir capacity curve based on hydrogeological parameters, including the following steps: hydrogeological exploration, determination of karst underground water reservoirs scope, determination of water storage space, determination of relevant hydrogeological parameters based on hydrogeological tests, and underground reservoir capacity analysis. The invention uses the unit water permeability and the borehole line karst rate that are very easily obtained through the borehole pressure (injection) water test and combines it with a small amount of water pumping test, thereby obtaining a correlation function relationship through regression analysis between the specific yield and the karst rate that are difficult to obtain and the unit water permeability or the permeability coefficient; the underground storage capacity at the corresponding elevation is calculated according to the specific yield or the karst rate and the underground storage capacity curve is obtained, which can improve accuracy and reduce errors.

The application relates to the technical field of sampling equipment, and discloses a portable sampling device for silt in a narrow river channel in a karst mountainous area, which comprises a connecting disc, a sampling assembly and a supporting assembly. The connecting disc is provided with a mounting hole. A connecting piece is arranged in the mounting hole. The connecting piece is provided with an abutting portion which can be telescopically moved. A driving piece for driving the abutting portion to move is rotatably connected to the connecting disc. The sampling assembly passes through the mounting hole and is slidably connected with the mounting hole. The sampling assembly can be screwed with the abutting portion. The sampling assembly can slide out of the mounting hole. The supporting assembly is hingedly connected with the connecting disc, and the supporting assembly can telescopically move. Through the double design of "support folding and shrinking" and "rod disc separation", the whole device can be divided into three independent modules, namely the connecting disc (containing the driving piece), the sampling assembly and the supporting assembly. Each module can be compressed to the minimum volume and easily put into a conventional size mountaineering bag or a sampling box, so that the real portability is realized.

The invention relates to the technical field of irrigation and water conservancy engineering, and discloses a karst mountainous area water retention and stabilization zoned ridge construction method and a ridge, and the method comprises the following steps: S1, digging a foundation trench along a ridge line of a pre-built upper terrace; s2, a load-bearing outer slope body surrounding the upper terrace is built in the foundation trench, and a through drainage hole is formed in at least one lateral section of the load-bearing outer slope body; s3, laying an inverted filter layer on the inner side of the bearing outer slope body; s4, the inner side of the inverted filter layer is filled and tamped with clayed soil in a layered mode, and an anti-seepage soil core wall is formed; s5, the bottom of the foundation trench in the area defined by the anti-seepage soil core wall is backfilled with planting soil; according to the construction method of the zoned ridge for water retention and stabilization in the karst mountainous area and the ridge, the series of problems that the ridge in the karst mountainous area cannot be stabilized, cannot be stored and cannot be drained smoothly are solved, and structural stability, efficient moisture retention and smooth drainage of the ridge in the karst mountainous area under complex hydrogeological conditions are achieved.

The invention relates to the technical field of ecological restoration, and discloses an investigation and matching restoration method used before restoration of a degraded forest, comprising an investigation method and a restoration method, analyzing the factor change of the degraded forest by using the investigation method, and matching a restoration model in the restoration method according to the factor change. According to the investigation method designed by the invention, factors with growth and development retardation and degeneration in the growth process of the protection forest in the later period are analyzed so as to analyze the change of the factors in the environment, the restoration model in the restoration method is matched by analyzing the change of the factors, and the degenerated forest is stably and efficiently transformed according to the restoration model; and the quality and the ecological service efficiency of the mountain forest in the karst landform and at the high altitude are improved.

The invention belongs to the field of data processing and water resources, and particularly relates to a running water ecological landscape water demand calculation method based on a mountainous area. The method comprises the following steps: identifying characteristics such as karst landforms and ancient terraces through remote sensing data; constructing a nonlinear regulation and storage model of the underground water storage reservoir to simulate a base flow hysteresis release effect; calculating a landscape fragmentation degree and a connectivity index, and establishing a mapping relation between a space structure and a hydrological process; constructing an ecological water demand quota correction matrix based on nonlinear regression; and outputting a final water demand calculation result in combination with the base flow supply sequence and the dynamic landscape parameters. According to the method, by introducing the nonlinear regulation and storage theory and the landscape pattern index, deep coupling and dynamic correction of the ecological water demand and the space structure are achieved, and the precision and scientificity of water demand calculation in the complex environment are improved.

The invention discloses a bank filtration system and method based on an inclined water intake well. The bank filtering system is suitable for underground water taking in a karst landform area, and comprises a filtering layer comprising natural sediments and / or artificial enhancement media of a surface water bank; the first aquifer is formed by carrying out bank filtration on the surface water by the filter layer; optionally at least one second aquifer located spatially below the first aquifer; the inclined water taking well extends towards the filtering layer at the angle that the included angle between the shaft axis and the horizontal direction is larger than 0 degree and smaller than 90 degrees, and the water taking section of the water taking well penetrates through or extends into the recoverable water-rich section of the first water-containing layer from the bank filter and at least one optional second water-containing layer. The inclined water taking well is introduced, the horizontal projection length of the water taking well is increased, the water catchment area and the effective water inlet section are remarkably increased, and more bank filtered water from lateral infiltration of a surface water bank can be collected.

This invention relates to the field of karst landform surveying technology, specifically providing a device for surveying the depth of underground cavities or fissures in karst landforms. The aim is to overcome the shortcomings of existing technologies and solve problems such as the pendant component easily getting stuck when falling into the fissure, and the device's adaptability to holes or fissures of different sizes or orientations. The invention comprises several main parts, including a support mechanism with a position adjustment mechanism, a measuring mechanism connected to the support mechanism, and a power mechanism connected to the measuring mechanism. The support mechanism and the position adjustment mechanism enable the device to adapt to holes or fissures of different sizes or orientations. The measuring mechanism uses a pendant component, which is lowered into the hole or fissure via a measuring rope. The power mechanism provides the power to wind and pull the measuring rope.

The invention provides a system and a method for extracting a hot melt lake in a frozen soil region based on multi-source remote sensing data, and relates to the field of freezing ring remote sensing monitoring. The method comprises the following steps: performing space-time alignment on multi-source remote sensing data in a frozen soil region; performing feature fusion by enhancing water body features to generate a hot melt lake multi-dimensional fusion feature map; extracting a time sequence feature vector based on the hot melt lake multi-dimensional fusion feature map; performing space detail and space-time consistency processing on the time sequence feature vector to generate a hot melt lake space-time evolution graph; constructing a loss function through a frozen soil heat conduction equation, and performing semantic segmentation based on a hot melt lake space-time evolution graph; a lake body boundary is optimized in combination with morphological processing, and a hot melt lake preliminary screening result is generated; inverting surface deformation based on a hot melt lake preliminary screening result; and constructing a three-dimensional point cloud, predicting the development trend of the hot melt lake in combination with an underground ice content estimation model, and generating a three-dimensional hot melt lake model. According to the invention, errors of multi-source data fusion and space-time analysis are reduced, and dynamic monitoring and analysis of the hot melt lake are realized more accurately and efficiently.

The invention belongs to the field of karst collapse analysis technology. The invention discloses a karst collapse susceptibility evaluation analysis method and system based on analytic hierarchy process, including: marking the measurement points in the karst area, collecting the karst data of the measurement points, standardizing the karst data, and obtaining the standard karst data; performing a geomagnetic division of the measurement points based on the geomagnetic intensity to obtain a hole point set; evaluating the biological activity of the hole point set by soil microbial data, and obtaining the microbial activity index; based on the atmospheric pressure, performing a pressure fluctuation analysis of the hole point set to obtain the pressure fluctuation index; based on the microbial activity index and pressure fluctuation index, constructing the collapse evaluation function. It effectively improves the accuracy of karst collapse analysis.

The invention provides a karst region multi-layer space coupling three-dimensional geologic model description method, and relates to the technical field of environmental governance, and the method comprises the steps: collecting space-air-ground integrated data; preprocessing and standardizing the data; constructing a three-dimensional geological structure model based on the processed data; establishing a groundwater numerical model based on the three-dimensional geologic model; and continuously optimizing the underground water numerical model based on parameter inversion and historical data verification. According to the method, multi-source collection and fusion of data are emphasized, collaborative analysis of multi-field coupling and dynamic monitoring is emphasized, and the problems that an existing single exploration means is low in efficiency, high in result uncertainty, high in multiplicity of solutions, insufficient in precision and the like are solved; a multi-means fusion mode of'air-ground-depth 'coordination, 'object-drilling-well' combination, 'water-chemical-sewage three-field 'coupling and'four-water linkage' intelligent dynamic monitoring is innovatively adopted, and accurate recognition of underground water pollution channels in the areas and high-precision construction of a three-dimensional geologic model are achieved.

The invention discloses a space-time multi-scale three-dimensional karst zone migration process simulation method. The method comprises the following steps: S1, obtaining topographic data, hydrological data and climate data of a target area; s2, according to the data obtained in the S1, based on a digital elevation model, a regular grid is adopted to divide terrain units of a target area, and a plurality of parallel compartments are introduced; s3, simulating the hydrological process of the target area based on the data obtained in the S1 and the terrain units divided in the S2; s4, simulating the landform evolution process of the target area based on the data obtained in the S1 and the terrain units divided in the S2, and dynamically updating according to the hydrological process in the S3; and S5, simulating the biogeochemical process of the target area based on the data obtained in the S1 and the terrain units divided in the S2, dynamically updating according to the moisture migration process in the S3 and the landform evolution process in the S4, and finally realizing migration process simulation.

This invention relates to the field of water supply management technology, specifically to a method for quantitative regulation of water resource vulnerability in karst slopes. The method includes the following steps: acquiring the structure of a gravel cushion layer, guiding the slope flow path, extracting stratified moisture data, analyzing vertical migration changes, establishing a particle size and porosity matching relationship, correlating moisture distribution with material sequence, constructing an interlayer linkage mechanism, tracking runoff and evaporation dynamics, and forming a water resource vulnerability regulation pattern. In this invention, the slope flow path is guided by the thickness and arrangement sequence of the cushion layer, enhancing the retention and diversion of moisture on the slope. Combined with the migration characteristics of shallow and mid-layer moisture, the stratified identification ability of vertical moisture distribution is strengthened. Through the matching analysis of particle size parameters and pore structure, the regulatory matching of modified materials between different strata is improved. A synergistic relationship between moisture migration path and particle size sequence is constructed, forming an interlayer linkage moisture regulation pattern, enhancing the spatial retention and accumulation of moisture on the slope.

The invention discloses a heterogeneous landform multi-scale hydrological cycle simulation method based on parallel compartments, and the method comprises the steps: S1, initializing a target region, exporting a landform factor of the target region according to a digital elevation model, generating a grid, and setting a plurality of parallel units in each grid point; s2, based on the terrain factors in the S1, simulating water flow among the units through precipitation, evapotranspiration and water storage capacity of the units, and dynamically updating data of the units in the S1 in the simulation process; s3, dividing each unit into a karst region and a non-karst region according to the topographic factors in the S1, and optimizing water flow among the units in the S2 according to characteristics of the karst region and the non-karst region; and S4, dynamically updating data in the water circulation process based on the water flow among the units optimized in the S3, and finally realizing hydrological circulation simulation. According to the method, the hydrological processes of different landform areas can be uniformly represented on the premise of ensuring numerical calculability, and the method is suitable for hydrological cycle simulation from a small watershed to a global scale.

The present application relates to the technical field of hydrology, and discloses a kind of high-cold frozen soil area hot melt lake pond's regulating function evaluation method, comprising: obtaining the multiple monitoring data of target permafrost region basin, after correction and uniform time processing, effective rainfall event and its event window division are carried out;In event window, calculate the change amount of soil storage, the change amount of groundwater storage, hot melt lake pond storage change amount;Calculate the normalized water storage efficiency index;Get hysteresis curve, peak time lag, hysteresis loop area, dynamic connectivity index, statistical connectivity index;According to hysteresis curve, judge the function mode of hot melt lake pond, divide the rainfall threshold of hot melt lake pond function conversion;Calculate comprehensive regulating index, carry out regulating capacity analysis, realize the regulating function evaluation of hot melt lake pond;The present application can not only finely identify the water storage, water supply and regulation behavior of hot melt lake pond under the event scale, but also accurately evaluate the dynamic hydrological function of hot melt lake pond.

The invention is suitable for the technical field of disaster early warning, and provides a flood and secondary disaster collaborative early warning method and system suitable for karst landform, and the method comprises the steps: obtaining disaster-inducing factor data of a target region; inputting the disaster-inducing factor data into a preset hydrogeological coupling model, and outputting surface ponding depths, underground river key node water levels and water pressure change values of different positions of the target area; according to the earth surface accumulated water depth, the underground river key node water level and the water pressure change value, comprehensive risk levels of different positions of the target area are determined, and the comprehensive risk levels are divided into a first level, a second level and a third level from high to low; and when the comprehensive risk level of any position exceeds a preset risk threshold value of the electric power facility at the current position, adaptive collaborative early warning information is automatically generated. Collaborative simulation and accurate early warning of the surface and underground disaster process of the karst landform area are achieved, and the early warning capacity of flood and secondary disasters in the complex geological environment is remarkably improved.

The invention relates to the technical field of water supply management, in particular to a water resource vulnerability quantitative regulation and control method suitable for a karst slope, which comprises the following steps: acquiring a broken stone hardcore structure, guiding a slope water flow path, extracting layered moisture data, analyzing vertical migration change, and establishing a matching relationship between particle size and pores. The water distribution and the material sequence are associated, an interlayer linkage mechanism is constructed, runoff and evaporation dynamic states are tracked, and a water resource vulnerability regulation and control pattern is formed. According to the method, the slope surface water flow path is guided through the thickness and arrangement sequence of the cushion layer, the retention and diversion effects of water on the slope surface are enhanced, the layering identification capability of vertical water distribution is enhanced by combining shallow layer and middle layer water migration characteristics, and through matching analysis of particle size parameters and pore structures, the slope surface water flow path is determined. The regulation and control matching performance of the improved material between differentiated layers is improved, the cooperative relationship between a water migration path and a particle size sequence is constructed, an interlayer linked water regulation pattern is formed, and the spatial retention and aggregation performance of slope water is enhanced.

The invention provides a karst basin sediment transport space change influence factor decoupling method and system based on model combination, and relates to the technical field of hydrologic landform modeling. The method comprises the following steps: establishing a basic watershed data set, establishing a relationship between potential variables and observation variables under a five-class factor framework of climate, lithology, soil, terrain and landscape, screening variables by adopting correlation analysis, evaluating importance in combination with a random forest, and selecting representative variables. And calculating a path coefficient and effect intensity by using a partial least square structure equation model, and quantitatively analyzing the action direction and contribution rate of each potential factor to the sediment transport space change. According to the method, quantitative decoupling of multi-factor action is realized, and the main control factor identification precision, the action mechanism analysis depth and the model stability are improved.

The application belongs to the field of data processing and water resources, and particularly relates to a water demand calculation method for a flowing water ecological landscape based on a mountainous area. The method comprises the following steps: identifying features such as karst landforms and ancient terraces through remote sensing data; constructing a nonlinear regulation and storage model of underground reservoirs to simulate the base flow lag release effect; calculating the landscape fragmentation and connectivity index, and establishing the mapping relationship between the spatial structure and the hydrological process; constructing an ecological water demand quota correction matrix based on nonlinear regression; and combining the base flow supply sequence and the dynamic landscape parameter to output the final water demand calculation result. The application realizes the deep coupling and dynamic correction of ecological water demand and spatial structure by introducing the nonlinear regulation and storage theory and the landscape pattern index, and improves the accuracy and scientificity of water demand calculation in a complex environment.

The present application belongs to the technical field of soil research. A device and method for dynamically observing the effect of rainfall on the peristalsis of microplastics in karst soil are disclosed. The device comprises at least one water collection assembly arranged on the rock-soil exposed layer of a karst terrain and in a low-lying area. The water collection assembly comprises a support frame fixed to the surface of the soil layer, and a surface runoff collection unit and a driving unit connected to the support frame. The present application can arrange the water collection assembly in the low-lying area of the rock-soil exposed layer of the karst terrain, use the opening of the surface runoff collection unit to collect rainwater, and store and separate the collected rainwater in the microplastic receiving unit. Meanwhile, the driving unit is arranged to drive the surface runoff collection unit to open to collect rainwater during rainfall, dynamically observe the effect of rainfall on the peristalsis of microplastics in karst soil, and drive the surface runoff collection unit to close during non-rainfall, thereby prolonging the service life of the surface runoff collection unit and avoiding the influence of external factors on the collection of rainwater.