128 results about "Subsurface flow" patented technology

The invention belongs to the technical field of hydrodynamics, and relates to a subsurface flow accurate measurement method and system based on an acoustic Doppler flow velocity profiler. The method comprises the following steps: measuring a target water area by using an acoustic Doppler current profiler; extracting at least one boundary feature parameter at the measurement point; constructing a physical-data fusion model and carrying out pre-training; inputting effective flow velocity data located above the measurement blind area in the original data of the flow velocity profile and the boundary characteristic parameters into a pre-trained physical-data fusion model; and outputting the subsurface flow velocity distribution in the measurement blind area and the key statistic and confidence interval of the subsurface flow velocity distribution. According to the method, the respective defects of an existing physical model and an existing data driving model can be overcome, a subsurface flow accurate measurement method integrating physical interpretability and environment adaptability is provided, a traceable and verifiable model training and evaluation benchmark is provided, and the subsurface flow measurement accuracy in a complex environment is remarkably improved.

The utility model discloses a modular horizontal subsurface flow wetland structure, and belongs to the field of municipal drainage. The modular horizontal subsurface flow wetland structure comprises an integrated wetland, the integrated wetland is composed of a first gravel area, wetland plants, a second gravel area, medium-coarse sand and broken stones, the first gravel area is located on one side of the broken stones, the second gravel area is located on the other side of the broken stones, and the wetland plants are located at the upper ends of the broken stones. The utility model solves the problems that the existing traditional method can not adjust and switch between an aerobic mode and an anaerobic mode when treating wastewater, and the whole structure can not adjust the flow track of sewage by responding to the switching of the modes, and after the flow track of liquid is adjusted through the first manual gate valve, the flow track of the liquid can be adjusted through the adjustment of the electronic valve. Sewage flows into the first gravel area at different positions, and is discharged from the position of the second water pipe in the second gravel area after being in contact with gravel.

The invention discloses an oil and gas site leakage pollution prediction method based on an HGS, and relates to the field of oil and gas site pollution prediction, and the method comprises the following steps: constructing an integrated three-dimensional geological grid comprising a surface water body, an aeration zone and a water-bearing layer through an HGS platform; on the basis of an integrated three-dimensional geological grid, pollution migration of pollutants in the shaft leakage process is simulated through a three-dimensional underground water flow model, leakage pollution plume changes of the pollutants in underground water are depicted through a solute migration function, and spatial and temporal distribution data of pollution plume migration are output; and obtaining a pollution prediction result based on the spatial and temporal distribution data of pollution plume migration. According to the method, the spatio-temporal evolution law of underground water pollution of the oil and gas field can be accurately displayed, and the problem that in the prior art, only simplified simulation can be conducted on solute transport in an underground water system, oil and gas field leakage pollution scenes under multiple working conditions cannot be accurately simulated, and consequently the oil and gas field leakage pollution prediction accuracy is low is solved.

The utility model discloses a compound circulating type constructed wetland tail water treatment system, and belongs to the technical field of water treatment systems. The system comprises a vertical subsurface flow wetland, a horizontal subsurface flow wetland and a surface flow wetland which are sequentially connected in series, tail water firstly passes through a water distribution unit of the vertical subsurface flow wetland, passes through a first multi-layer filler from bottom to top, and then passes through a second multi-layer filler from bottom to top; according to the utility model, the three wetland systems are combined, and are strengthened in the circulating plug-flow type surface flow wetland, the function division is reasonable, the operation is simple, the operation is convenient, the cost is low, the operation is convenient, the operation is simple, the operation is convenient, the operation is convenient, the operation is convenient, and the cost is low. The tail water firstly enters the vertical subsurface flow wetland and the horizontal subsurface flow wetland to intensively remove various types of pollutants such as organic matters, nitrogen and phosphorus, and subsequently enters the surface flow wetland, and the submerged plants at the water bottom and the emergent aquatic plants on the water surface act together to intensify the purified water quality and improve the purification effect of the tail water.

The invention relates to the technical field of coal mine hydrogeology and environmental engineering, and discloses a coal mine groundwater flow-water quality coupling simulation method under mining disturbance condition, which comprises the following steps: step 1, mining disturbance area hydrogeology basic data acquisition: field investigation, drilling sampling, field test and long-term monitoring are carried out to obtain mining disturbance area hydrogeology basic data; the method comprises the following steps: acquiring landform, stratum lithology, geological structure, initial hydraulic gradient, porosity, initial permeability, initial pollutant concentration and hydrogeochemical parameters of a research area, and collecting a coal mining scheme, rock stratum movement observation data and fracture development characteristic parameters; according to the method, the dynamic hydrogeological parameter model is constructed, the water flow-water quality coupling control equation is established, numerical solution and accurate calibration are combined, and accurate simulation of the underground water flow field and the water quality migration process under the mining disturbance condition can be achieved.

The application discloses an online monitoring method and device for groundwater and soil pollution and a medium, and belongs to the technical field of environmental protection. The method comprises the following steps: collecting various data of groundwater and soil based on a preset data collection module; converting the various data into a unified data set based on a preset gateway protocol conversion algorithm in the data collection module, and uploading the unified data set to a data transmission module; obtaining an industrial internet identifier based on a preset active identification algorithm in the data transmission module, and transmitting the unified data set to a groundwater and soil pollution monitoring platform; processing the unified data set based on a preset pollution judgment algorithm in the groundwater and soil pollution monitoring platform, so as to determine the pollution condition of the region where the data collection module is located; and when there is pollution in the region where the data collection module is located, determining the enterprises that need to be rectified based on a preset groundwater flow line map and the pollution condition. The application can timely understand the pollution condition of groundwater and soil through the above method.

To provide a method for evaluating carbon dioxide fixation filler suitable as a technique for evaluating the long-term durability of carbon dioxide fixation filler to be placed in abandoned tunnels of closed and abandoned mines, and to provide an analysis method and analysis program applicable to said evaluation method. [Solution] One aspect of the present invention is a method for analyzing carbon dioxide fixation filler, which is a method for evaluating filler placed in an underground space, in which the filler is a carbon dioxide fixation material containing carbonate produced by reacting a starting material with carbon dioxide, and the method acquires physical quantities indicating the quality of the groundwater present in the target underground space, the temperature and depth of the underground space, the amount of carbonate contained in the filler, the dissolution rate of the filler in groundwater, the specific surface area of ​​the filler, and the ratio of the amount of groundwater inflowing into contact with the filler to the amount of filler, and analyzes changes in the amount of carbon dioxide fixation by the filler over time based on the acquired physical quantities, temperature and depth, amount of substance, dissolution rate, specific surface area, and ratio.

The invention provides a surface water-underground water integrated simulation method and system coupled with a glacier module, the method is based on an extended SWAT-GL model, rainfall, accumulated snow melt water and glacier melt water are jointly used as daily effective rainfall input, infiltration supply and river water level are transmitted to MODFLOW through a daily interface, and the water level of the MODFLOW is effectively simulated. And simulating underground water head change and surface water-underground water exchange capacity by utilizing a three-dimensional underground water flow equation, and feeding back a result to SWAT-GL river water balance, thereby realizing bidirectional dynamic coupling of the glacier-accumulated snow-surface-underground water whole process. The system breaks through the limitation that glacier mass balance and groundwater dynamics are difficult to depict synchronously in cold region simulation, can reveal a supply and regulation mechanism of glacier melt water to a groundwater system under the driving of climate change under a fine time scale, and remarkably improves the simulation capability of a cold region water circulation key process.

The invention discloses a soil remediation and sewage purification integrated ecological treatment device which comprises a vertical flow artificial wetland region, a horizontal subsurface flow artificial wetland region and an ecological purification region which are sequentially arranged in the water flow direction, so that soil remediation and sewage purification are organically integrated, sewage can be purified, heavy metal can be prevented from migrating to soil, and the soil remediation and sewage purification effects are improved. The composite filler in the vertical flow artificial wetland realizes resource utilization of the polluted soil, the composite filler in the horizontal subsurface flow artificial wetland removes multiple pollutants in a targeted manner, and intermittent aeration is matched to improve the microbial activity, so that efficient green treatment of sewage and soil is realized. Soil in-situ remediation and sewage pretreatment are achieved in the vertical flow artificial wetland, pollutants are deeply purified and prevented from leaking in the horizontal subsurface flow artificial wetland, deep nitrogen and phosphorus removal and heavy metal absorption are achieved at the tail end of the ecological purification area, the risk of secondary pollution can be effectively avoided, and it can be ensured that the effluent quality stably reaches the standard.

The system comprises a data acquisition and input module, a data preprocessing module, a three-dimensional geological construction module, a solute transport module and a visualization and interaction module, the data acquisition and input module is used for multi-source data acquisition, the data preprocessing module is used for data cleaning and sorting, and the three-dimensional geological construction module is used for three-dimensional geological construction. The three-dimensional geological construction module is used for constructing a three-dimensional geological model, the solute transport module is used for simulating the transport of pollutants under the action of underground water flow, and the visualization and interaction module is used for displaying simulation results and performing user interaction. According to the invention, an improved pollutant transport channel intelligent description and dynamic modeling algorithm is provided to construct a three-dimensional geologic structure model, and an improved pollutant transport high-precision feature-operator splitting algorithm is provided to simulate the transport of pollutants under the action of underground water flow. And a better scheme is provided for the underground water pollutant flow direction determination method and system based on multi-source data detection.

The invention discloses a novel artificial wetland water treatment test method, and particularly relates to the field of environmental protection and ecological engineering. In order to overcome the defects that a traditional constructed wetland is limited by environmental conditions and is insufficient in treatment efficiency, improvement of the purification effect and the regional adaptability serves as a core target, and wetland form optimization, water flow mode improvement, water level adjustment design, filler combination screening, wetland regional adaptability and other work are carried out. An experiment takes acorus calamus as a purification plant, selects common filler to construct different wetland units, and compares and analyzes treatment effects of different subsurface flow modes, and finds that a horizontal-vertical subsurface flow coupling system is better in pollutant removal, and different matrix combinations have different removal effects on different pollutants. The method has the advantages of low operation cost, low cost, simple maintenance and management, reduction of secondary pollution, ecological restoration and environmental value, promotion of the cyclic utilization of water resources, and development of environmental protection and sustainable development.

The purpose of the invention is to provide in situ treatment and flow diversion of contaminated groundwater without the need for an external energy source. The primary means by which contaminated groundwater is treated in situ within a subsurface environment is through the use of the modular SubflowRx and interrelated components that work together or independently to control groundwater flow outside the system as well as diverting contaminated groundwater inside the system for extended treatment. The present disclosure provides embodiments, examples, and advantages of how the components work to achieve this common purpose.

The utility model discloses a sewage treatment system for a subsurface flow constructed wetland. The sewage treatment system comprises a water distribution channel, a wetland unit and a water outlet channel which are connected in sequence, the water distribution channel is connected with a wetland water inlet pipe through a first conical filter, the water distribution channel is further connected with a connecting pipe used for being connected with the front water treatment unit, and an emptying opening is formed in the bottom of the water distribution channel; a bottom porous filter plate is arranged between the wetland unit and the water distribution channel, the wetland unit comprises a traditional filler area, wetland plants are planted in the traditional filler area, a porous filter column is further arranged in the traditional filler area, and a functional filler is arranged in the porous filter column; the water outlet channel is connected with a wetland water outlet pipe through a water outlet flow distribution valve, the water outlet flow distribution valve is further connected with a backflow pipe through a second conical filter, and the backflow pipe is used for being connected with the front water treatment unit. According to the utility model, the sewage can directly or indirectly pass through the constructed wetland to realize deep purification of water quality, so that the emission standard is reached, and the economical efficiency and the adaptability are excellent.

The application discloses a vertical subsurface flow and intermittent aeration microbial filter wetland system, which comprises a comprehensive water inlet pipe gallery arranged at the upstream of the wetland, a water outlet pool arranged at the downstream of the wetland and a lower microbial filter arranged between the comprehensive water inlet pipe gallery and the water outlet pool, and the top of the lower microbial filter is provided with an upper subsurface flow wetland structure; the comprehensive water inlet pipe gallery comprises a comprehensive water inlet pool with an opening facing upwards, and a plurality of columnar water inlet holes are formed in the side wall of the comprehensive water inlet pool close to the lower microbial filter; the lower microbial filter is filled with porous medium carrier fillings; the whole wetland system adopts a double-layer cooperative purification design, the lower microbial filter completes the core degradation of organic pollutants, nitrogen and phosphorus in sewage, and the upper subsurface flow wetland structure performs deep purification on residual pollutants, so that the two layers of structures perform their respective functions and cooperatively treat the sewage, and the overall purification effect of the sewage and the pollutant removal rate are greatly improved.

The application discloses a surveying-based binary structure small watershed division method and system, and particularly relates to the field of watershed division. Basic data processing of the application includes collecting and preprocessing topography, remote sensing and other data, establishing a basic database, converting vector contour line data into DEM and filling in depressions, generating a non-depression DEM, determining water flow direction by using a D8 algorithm, calculating cumulative flow, and generating a river network. The river channel is converted into a vector runoff network, the sub-watershed range is extracted and mapped, the outcrop point of underground river or karst spring is taken as a corrosion reference, the watershed outlet is determined in combination with the main river channel of a large river, and a complete correlation system is constructed. Finally, the development of the underground water system pipeline is determined through hydrogeological investigation, geophysical prospecting, drilling and pumping test, the results of comprehensive investigation, geophysical prospecting, drilling and pumping test are comprehensively considered to accurately correct the boundary of the underground water system, and the underground water system distribution map conforming to the actual conditions is formed in combination with remote sensing images and administrative division maps.

The invention relates to a high-radioactive waste disposal simulation method and system based on multi-field coupling. The method comprises the following steps: constructing a three-dimensional finite element model of a high-radioactive waste repository and a surrounding geological medium based on physical field simulation; simulating temperature change around the high-radioactive waste repository, underground water flow velocity change and radionuclide concentration change; based on a geochemical calculation model, performing chemical reaction calculation on the distribution of the radioactive concentration of the high-radioactive waste in underground water and rock-soil media, including dissolution, precipitation, adsorption and ion exchange of the high-radioactive waste; and carrying out iterative coupling on the physical field simulation and the geochemical calculation model, and outputting a high-radioactive waste disposal simulation result which comprises a radionuclide concentration three-dimensional distribution diagram, a migration flux vector diagram and temperature field distribution. Through iterative coupling of a physical field and a chemical field, high-precision simulation prediction of nuclide migration behaviors in a high-radioactive waste long-term disposal environment is realized, and a simulation result is close to an actual migration process.

This utility model relates to an enhanced nitrogen and phosphorus removal device for a subsurface flow wetland fabric / collection system. A mesh fabric surrounds the perforated areas of the fabric and collection pipe in the subsurface flow wetland, with its ends bound and secured to the fabric and collection pipe. The space between the mesh fabric and the outer wall of the fabric and collection pipe is filled with ceramsite and a slow-release carbon source, the particle size of which is larger than the perforation size. The ceramsite and slow-release carbon source have a larger mesh size than the mesh fabric. The beneficial effects are: after the fabric wraps around the ceramsite and slow-release carbon source, the water effluent from the perforations in the distribution pipe is dispersed and redistributed to the packing layer, ensuring uniform water distribution and solving the problem of uneven water distribution in subsurface flow wetlands. The ceramsite and slow-release carbon source are close to the distribution pipe, where the water flow velocity is relatively fast. The water flow scouring action prevents excessive biofilm growth, allowing more water to enter the packing layer, improving nitrogen and phosphorus removal efficiency under low-temperature conditions in winter. The slow-release carbon source provides the carbon source needed for microbial growth, improving wastewater denitrification efficiency.

The application provides a three-dimensional network fracture model construction method, system, medium and equipment, relates to the three-dimensional network fracture simulation technical field, determines basic parameters according to a network fracture geometric model, and establishes a three-dimensional network fracture model, carries out inert solute transport simulation and reactive solute transport simulation on the basis of the groundwater flow field of the three-dimensional network fracture model, to obtain reactive solute transport parameters, and calculates the spatial distribution of the reactive solute in the three-dimensional network fracture model according to the reactive solute transport parameters, so that the transmission state of the reactive solute in the fracture medium is accurately obtained and analyzed, and scientific and reasonable data support is provided for the control of the pollutant transport and reaction process.

The application provides a kind of coupling ice module surface water-groundwater integrated simulation method and system, which is based on the extended SWAT-GL model, and inputs rainfall, snowmelt and glacial melt water as daily effective rainfall, transfers the infiltration recharge and river level to MODFLOW through daily interface, simulates the change of groundwater head and the exchange amount of surface water-groundwater by using three-dimensional groundwater flow equation, and feeds back the results to SWAT-GL river water balance, realizes the two-way dynamic coupling of the whole process of glacier-snow-surface-groundwater. The system breaks through the limitation that it is difficult to simultaneously depict the glacier mass balance and groundwater dynamics in cold region simulation, and can reveal the recharge and regulation mechanism of glacial melt water to groundwater system under the driving of climate change at a fine time scale, significantly improving the simulation capability of key processes of water cycle in cold regions.

The invention discloses an underground water flow field physical information neural network modeling method considering spatial heterogeneity, and belongs to the technical field of underground water flow fields, and the method comprises the steps: 1, selecting a two-dimensional underground water unstable flow equation as a physical law, collecting hydrogeological parameters, rainfall, underground water exploitation amount and geographic coordinate data, and carrying out the normalization preprocessing; 2, constructing a PINNs model based on the preprocessed data, dividing a data set according to 7: 3, dynamically adjusting the weight of a loss function by means of an NTK technology, and updating parameters through an optimization algorithm; 3, extracting a simulation residual error of the PINNs model, inputting the simulation residual error into a GTWR model for fitting, performing Kriging interpolation to obtain residual error space distribution, and superposing PINNs simulation results to obtain a final underground water flow field simulation result; according to the method, the weight of the loss function of the PINNs is dynamically adjusted by fusing the neural tangent kernel technology, the spatial heterogeneity characteristics of the hydrogeological parameters can be adapted, the weight imbalance of physical constraints and data information is avoided, and the model is guaranteed to meet the physical law and fit the actual data distribution.

The application provides a water quality maintaining system based on a composite wetland system suitable for low temperature, and belongs to the technical field of river water treatment, and comprises a pre-deposition ecological pond, a horizontal subsurface flow wetland and a multi-pond system which are sequentially connected, the pre-deposition ecological pond is provided with a water inlet, the multi-pond system is provided with a water outlet, the water flow path in the horizontal subsurface flow wetland is in a multi-segment curved shape, and the multi-pond system is provided with at least two submerged plant ponds which are connected with each other; wherein the pre-deposition ecological pond is provided with a gate body with a gate opening at the water inlet, a gate and a filtering device are arranged in the gate body in a lifting mode, a driving assembly for driving the gate and the filtering device to move in opposite directions is arranged in the gate body, and the gate body is provided with a containing groove at the bottom for the gate and the filtering device to descend; when the gate body is located in the containing groove, the filtering device is located at the gate opening of the gate body, and the filtering device is used for filtering and treating the water passing through the gate body. The application greatly increases the hydraulic retention time and improves the wetland water quality treatment effect.

The invention discloses a design method of an on-line monitoring system for directly observing the flow velocity of underground water, which comprises an observation probe, a data acquisition terminal and a cloud data platform, and is characterized in that the motion trail of colloidal particles in a well is tracked in real time through the observation probe, and the flow velocity of the colloidal particles in the well is calculated through a mode of reducing data randomness and redundancy-coordinate conversion-component accumulation. The discrete motion trail of the colloidal particles is converted into continuous time average displacement; the concept of the accumulated flow velocity is further proposed, the theoretical relation that the accumulated flow velocity approaches the actual flow velocity under long-time monitoring is defined, the problem that the particle motion state and the actual flow velocity are difficult to associate is solved through a conversion method of pumping test calibration and conversion coefficient correction, and online automatic monitoring and real-time data output are achieved; an efficient data channel is provided for subsequent data analysis and application, a basis is provided for water conservancy departments to evaluate underground water mining rationality, to optimize irrigation schemes in the agricultural field and to track pollution plume migration in the environmental protection field, and a monitoring-analysis-decision application closed loop is formed.

The present application relates to a river sewage outlet in-situ ecological restoration system design method based on water power optimization technology, in the wet season, different forms of stone cage are arranged near the sewage outlet drop point of the river, the purpose is to slow down the water flow, the principle is to take the parallel shoreline, the water flow of the river and the sewage outlet is generalized as a particle, and the reflection path of the water flow particle is assumed, numerical simulation and correction are adopted, and finally the optimal distance of the stone cage from the sewage outlet and the best length, quantity and spacing of the stone cage are determined; aquatic plants and fillers are planted in the target nearshore slow flow area to construct a subsurface flow-surface flow interaction area and improve the pollutant removal effect. In addition, considering the different water flow characteristics and pollutant purification characteristics in the dry season, a relatively closed area is constructed by using the stone cage, and the sewage of the sewage outlet is pretreated by using the electrochemical technology + membrane biological technology to relieve the water purification pressure of the river in the dry season. The beneficial effect is that the environment-friendly in-situ restoration technology can reduce the cost while achieving the best restoration effect.

The invention discloses an underground water remediation system, and relates to the technical field of remediation and treatment of polluted site soil underground water, and the underground water remediation system comprises a plurality of reaction walls, a remediation agent, a precipitation well and a submersible sewage pump; the reaction walls extend in the second direction, the multiple reaction walls are arranged at intervals in the first direction, and the reaction walls are arranged in a hollow mode; the reaction wall is filled with the remediation agent, and the reaction wall is used for allowing underground water to penetrate and flow in the first direction so as to make contact with the remediation agent; at least one dewatering well is arranged between two adjacent reactive walls of the dewatering wells; the submersible sewage pump is mounted in the dewatering well and is used for pumping underground water; according to the technical scheme, the submersible sewage pump is arranged in the downstream direction of the reaction wall, underground water is pumped through the submersible sewage pump, a local water head is increased, the flow speed of the underground water is increased, the underground water rapidly permeates through the reaction wall, repairing is completed, and the technical effects that the flow speed of the underground water is increased, and the repairing speed of the polluted underground water is increased are achieved.

The invention provides a device and method for testing the migration behavior of a repairing material in an underground water environment, and the device comprises a migration device for simulating the underground environment, and testing equipment. The migration device comprises a medium groove, a water injection pool, a water outlet pool, an electrode and a repair material injection device, the electrode is arranged in the medium groove and used for being electrically connected with test equipment to monitor the resistivity change of the migration device; and the repair material injection device is used for injecting a repair material into the migration device. According to the device, accurate control over the flow velocity of underground water is achieved by simulating the water flow velocity of the actual underground water environment, it is guaranteed that the real migration condition of the remediation material in the underground water environment is simulated by simulating the chemical environment of the underground water, and the migration behavior of the remediation material is monitored in real time through high-density resistivity imaging equipment; the method has important scientific significance on the migration rule of the remediation material in soil and underground water and the realization of efficient remediation of soil and underground water pollutants.

The application discloses a kind of shallow buried covering type karst leakage path detection method.It includes the following steps, S1: the karst distribution characteristics of region is interpreted by remote sensing, and the initial target area is determined in combination with hydrogeological survey;S2: the target area is detected by AMT on a large scale, and the low resistivity anomaly zone is identified;S3: based on AMT result, the abnormal band is scanned by encryption using GPR, and the bedrock surface and karst shape are drawn;S4: based on the upstream of the karst groundwater seepage path judged preliminarily by hydrogeological survey, throw tracer, and set receiving point downstream to dynamically monitor the tracer concentration in water sample to determine the connectivity between the injection point and the receiving point;S5: integrate remote sensing, geophysical prospecting and tracer data, construct three-dimensional groundwater flow-solute transport model, and output groundwater runoff network.The application has the advantages of improving detection accuracy, reducing cost and improving detection efficiency.

The application provides a cold region groundwater environment early warning method fusing digital twinning and freezing and thawing process, and the method comprises the following steps: constructing a digital twin corresponding to the state of a cold region groundwater system; collecting and assimilating multi-dimensional observation data representing the state of a cold region groundwater environment in real time through a multi-source data perception layer; in a water-heat coupling model layer, based on the multi-dimensional observation data, performing strong coupling numerical simulation of the freezing and thawing process and groundwater flow, and dynamically deducing the influence of the freezing and thawing front migration on the groundwater system; using a data assimilation algorithm, fusing the multi-dimensional observation data and the simulation output of the water-heat coupling model layer, and updating the state variables and model parameters of the digital twin in real time; in a dynamic early warning decision layer, based on the updated state of the digital twin, evaluating a groundwater environment risk index and issuing graded early warning information; through the above technical solution, the water-heat dynamics of the cold region groundwater system can be simulated and mapped in real time.

This invention discloses a posture optimization and adjustment system and method for earth pressure balance tunnel boring machines (TBMs) in hydraulic engineering, relating to the field of posture optimization and adjustment technology for earth pressure balance TBMs in hydraulic engineering. It includes a groundwater data acquisition module, a posture data acquisition module, a posture optimization processing module, and a posture optimization adjustment module. The groundwater data acquisition module and the posture data acquisition module acquire groundwater flow velocity data, posture deviation data, earth chamber pressure data, and TBM propulsion data. The posture optimization processing module is used to obtain the degree of influence of groundwater flow velocity on the posture deviation data, earth chamber pressure data, and TBM propulsion data. This invention combines Doppler velocity detection technology, acceleration acquisition technology, sensor technology, synchronous clock source technology, and modern information technology to achieve comprehensive monitoring of the influence of groundwater flow velocity on the posture optimization and adjustment of the earth pressure balance TBM.

This invention discloses a composite circulating constructed wetland effluent treatment system and method, belonging to the technical field of water treatment systems. The invention includes a vertical subsurface flow wetland, a horizontal subsurface flow wetland, and a surface flow wetland, connected in series. The effluent first passes through the water distribution unit of the vertical subsurface flow wetland, flowing upwards through a first multi-layer packing material. The initially purified effluent then enters the perforated pipe water distribution unit of the horizontal subsurface flow wetland, flowing horizontally through a second multi-layer packing material. The further purified effluent is then discharged into a circulating plug flow surface flow wetland. This invention combines three wetland systems and enhances the circulating surface flow wetland, with reasonable functional zoning. The effluent first enters the vertical and horizontal subsurface flow wetlands, where the removal of various types of organic matter, nitrogen, phosphorus, and other pollutants is enhanced. Subsequently, it enters the surface flow wetland, where submerged plants at the bottom and emergent plants at the surface work together to enhance water quality purification and improve the effluent purification effect.

This invention belongs to the field of spatial location technology for geological defects, and provides a method and system for spatially locating water-conducting fracture zones in coal mines. The method involves establishing a three-dimensional prior geological model of the target area in the coal mine; setting at least one tracer injection point and multiple receiving points in the target area; injecting fluorescent nano-tracers; acquiring tracer concentration-time response data at each receiving point and extracting characteristic parameters; constructing a three-dimensional forward model based on the three-dimensional prior geological model and the extracted characteristic parameters, which includes a groundwater flow model and a tracer transport model; comparing the measured response with the forward model output, constructing a joint objective function, iteratively inverting the parameters to be estimated, obtaining the optimal parameter combination, and obtaining the three-dimensional spatial location, development height, extension direction, connectivity direction, influence range, and uncertainty results of the water-conducting fracture zone. This invention achieves water inrush source identification, water-conducting fracture zone location, and risk quantification assessment.