33 results about "Saltwater intrusion" patented technology

The invention discloses an experimental apparatus and method for simulating the influence of the underground water level of a coastal reclamation area on water-salt movement. A transparent cuboid soil box is placed into a transparent underground water level control box; a moisture sensor installing hole, a salinity sensor installing hole, a temperature sensor installing hole and a sampling hole are formed in the side wall of the soil box along a direction parallel to the center line of a column body at different radial heights; a filter layer is formed at the bottom of soil in the cuboid soil box, and is wrapped with non-woven cloth; a water flow hole is formed in a side wall which is at the same height as the filter layer; a detachable grid movable plate is arranged on the side wall of the cuboid soil box; an infrared lamp or an incandescent lamp is arranged above the cuboid soil box; a water pipe and a water valve are arranged at positions, which are close to the bottom, on the underground water level control box. By adopting the experimental apparatus and method, soil water-salt movement under the condition of rising of the underground water level due to seawater intrusion in the coastal reclamation area can be simulated, real-time dynamic monitoring can be performed, and the soil water-salt movement rule can be researched by changing different experimental conditions such as different water qualities and water levels in the underground water level control box.

The invention provides an experimental device and method for water intrusion of gas reservoirs under different crack distribution modes. The experimental device comprises a constant-speed and constant-pressure displacement pump, a valve, a piston-type vessel, a pressure sensor, an injection pipeline, an injection opening, a full-diameter core holder, a rubber cylinder, a crack core model, a confining pressure pump, a confining pressure gauge, a confining pressure hole, an outlet, an outlet pipeline, a constant-temperature box, a back pressure device, a gas-liquid separator, a gas meter, a backpressure pump, a back pressure gauge and a base. The core combination model for simulating different cracks is placed in the full-diameter core holder, the bottom of the full-diameter core holder isconnected with the piston-type vessel through a pipeline, and water and gas are provided, confining pressure is applied to a core through the confining pressure pump, an outlet of the full-diameter core holder is connected with the back pressure device, and an outlet of the back pressure device is connected with the gas-liquid separator. According to the experimental device and method for water intrusion of the gas reservoirs under the different crack distribution modes, the different stratum dip angles, the different crack distribution modes, and different edge-bottom water energy can be simulated, and the high-temperature and high-pressure stratum conditions can be met.

The invention discloses an underground reservoir technology preventing seawater intrusion. Hydrogeologic survey serves as a mean, interfaces, positions, ranges and modes of underground seawater intrusion of islands, reefs and coastal cities are found out, an underground water-blocking curtains are built to cut off hydraulic connection between underground seawater and fresh water, an artificial underground water storage layer is built, and rainfall is fully intercepted by means of seepage-prevention ditches, radiation wells and the like. A seawater intrusion channel is cut off in a key position, seawater intrusion is prevented, the problem about fresh water resource self-supply of coastal cities, islands and reefs can also be solved, and fresh water resources are scientifically and reasonably protected, developed and used.

The present invention relates to a desalting system equipment for running water with high salt content. Said desalting system equipment mainly includes active carbon adsorption filter tank, safety filter, ultrafiltration component, nano filtering component, clean water tank, pure water tank, ultrafiltration water supply pump, nano filtration water supply pump and various valves and pipelines.

The invention discloses a polymerization method for improving mudflat saline-alkali land and planting commercial crops. The method particularly comprises the following steps of 1 flood prevention and saltwater intrusion prevention causeway constructing, 2 salt-elimination water ditch network establishing, 3 saline-alkali land pretreating, 4 isolation planting, 5 maintaining after planting and the like. According to the polymerization method, by means of ditch network salt elimination, natural rainwater salt leaching, local control of planting space and isolation of a plant root planting area from saline-alkali soil and effective planting of the commercial crops, the advantages of being low in cost, easy and convenient to operate and suitable for large-area development and utilization of the saline-alkali land are achieved.

A saltwater intrusion prevention system for use at an interface between a fresh water body and a saltwater body includes a water recovery subsystem for recovering fresh water from a fresh water body. A retention reservoir in fluid communication with the water recovery subsystem receives and redirects the recovered fresh water. A saltwater intrusion barrier subsystem in fluid communication with the retention reservoir is positioned at an interface of the fresh water body and the saltwater body. The saltwater intrusion barrier subsystem includes a plurality of submerged return discharge ports for vertically ejecting the recovered fresh water for providing hydraulic mounding zone, and a fine air bubbler header for creating a mixing zone. The hydraulic mounding zone and the mixing zone increase the density of the fresh water for offsetting saltwater from the saltwater body.

The invention discloses a ship anti-flow-backward drainage system. The system comprises a middle drainage pipe, an anti-wave valve arranged at the lower end of the middle drainage pipe and a self-closing water draining device arranged at the upper end of the middle drainage pipe, the middle drainage pipe is selectively communicated with the exterior of a cabin to be drained through the anti-wave valve, the end, away from the middle drainage pipe, of the self-closing water draining device is connected with an accumulated water deck of the cabin to be drained, the self-closing water draining device drains seawater from the cabin to be drained into the middle drainage pipe, and seawater inside the middle drainage pipe is isolated from the accumulated water deck. Seawater flow backward can beeffectively avoided, and the reliability is high.

The invention relates to the field of water conservancy projects, in particular to a diversion scheme by constructing a dam in a riverway and on the coast. A dam is constructed in water of the coast on the way of diversion to form a channel reservoir, so as to transfer water horizontally. A ship lock and a water lock are arranged in an initial riverway of the channel reservoir, thus inwelling can be prevented, waste caused by the fact that excessive river water accesses to the sea can be controlled, a cargo ship and a passenger ship can conveniently pull in and out of a wharf, an inverted siphon water pipe is constructed at the base of levee of a port along the channel reservoir, and an overhead viaduct on the dam surface is parallel to transportation of passengers and goods by a train and a car on a road. The ship lock and the water lock are arranged at the tail of the channel reservoir, thus the altitude when water is pumped can be improved, domestic water and industrial and commercial water can be guaranteed, water for irrigation and plantation can be guaranteed, and water discharge for flood control can be realized. In the engineering design scheme in the invention, various places in which natural riverway and coast are located are modified for water transfer by constructing the dam, and a design plan is realized by applying the scheme in the invention. The construction is simple and feasible, the investment is less, the water diversion quantity is high, the influence to the ecological environment is less, the benefit of energy conservation and emission reduction is great, and low carbon and sustainable scientific development at home and abroad can be obviously promoted.

The invention discloses a device for testing depth of encroached sea water, which comprises a water level and pressure sensor, an automatic controlling and recording module, a housing and a support. The water level and pressure sensor is used for measuring pressure of sea water, the automatic controlling and recording module is used for recording data of the water level and pressure sensor in real time, the support is mounted on the coast, the housing is mounted on the support, an upper sealed cavity and a lower cavity are arranged in the housing, the upper sealed cavity is used for mounting the automatic controlling and recording module, the lower cavity is used for mounting the water level and pressure sensor and provided with holes for sea water to inflow. The device for testing depth of encroached sea water has the advantages that the device can test dynamic change process of the depth of the encroached sea water in real time continuously, cannot be affected by weather, and can be prevented from damages or movement by matching between the housing and the support.

The invention discloses a method for inversion of freshwater assurance rate along estuaries, which comprises the following steps: according to the historical freshwater runoff and tidal level data ofthe estuary, obtaining the runoff distribution function influenced by artificial water intake; B. establishing a runoff-tide level two-dimensional joint distribution and joint risk probability model;C. constructing a three-dimensional hydrodynamic and salinity mathematical model based on the topography measure in the estuary; D, based on the three-dimensional hydrodynamic and salinity mathematical model obtained in the step C, simulating the saline water intrusion by item combination of runoff and tidal level to obtain a runoff and tidal level interval, namely a freshwater guaranteed area, inwhich the saline water intrusion does not occur in each river section; E. calculating the assurance rate of freshwater along the estuary along the saltwater intrusion based on the step B and the stepD; F. according to the assurance rate of freshwater along the estuary obtained in the step E, obtaining the critical water intake cross section under different water intake scales. The invention hasthe advantages of providing a salt water intrusion risk assessment method and realizing accurate quantification of the freshwater guarantee rate along the estuary.

The invention provides a comprehensive stern pipe sealing lubricating oil system. The system is provided with a stern pipe. A stern seal and a bow seal are arranged at the two ends of the stern pipe correspondingly. The stern pipe is connected with a lubricating oil circulating cabinet and a draining and collecting unit through hoses. The lubricating oil circulating cabinet is connected with a forced circulating pump set. The forced circulating pump set is connected with the stern pipe through a pipeline, and a first circulating net is formed. The stern pipe is further connected with a portable lubricating oil cabinet and a bow sealing oil cabinet. The stern pipe is connected with the portable lubricating oil cabinet to form a second circulating net. The portable lubricating oil cabinet can be placed at the first position or the second position or the third position. According to the system, the stern pipe air sealing lubricating oil system is taken as a main part, a traditional sternpipe oil sealing lubricating oil system serves as a spare comprehensive lubricating oil system, and when faults break down, the traditional stern pipe oil sealing lubricating oil system can be used for replacing the stern pipe air sealing lubricating oil system. The system perfectly avoids the possibility that when an air supply system breaks down, seawater back filling occurs to the traditional stern pipe air sealing lubricating oil system, and it is ensured that ships operate smoothly on sea.

The invention discloses an aquifer experiment simulating device. The device comprises a saltwater tank, a sand tank and a pressure-bearing cover plate, wherein the saltwater tank is communicated withthe sand tank; the saltwater tank and the sand tank are connected with the pressure-bearing cover plate to form a relatively closed pressure environment to simulate a confined aquifer; and a non-confined aquifer can be simulated when the pressure-bearing cover plate is removed. The device has the beneficial effects that a plurality of water / gas injection holes for water / gas injection are formed inthe side face of a sand filling area in the middle of the sand tank to solve the problem that the effects of various seawater intrusion treating methods cannot be simulated in the prior art; a saltwater area of the sand tank is directly connected with the large-volume saltwater tank to solve the problem that the saltwater concentration is unstable when the aquifer of a coastal zone is simulated in the prior art; in addition, the whole process of saltwater intrusion can be directly observed and recorded by the device to meet the various requirements of physical model experiments for seawater intrusion research; and the device is reasonable in structure, reliable in performance, simple and convenient to operate and strong in comprehensiveness.

The invention discloses a cohesive soil curing agent and a cohesive soil soft foundation treating method thereof, and belongs to the technical field of foundation (roadbed) treatment in building construction. Being composed of waste steel slag generated by industrial steelmaking and quick lime, the cohesive soil curing agent is low in manufacturing cost, environmentally friendly, capable of being used for treating cohesive soil different in moisture content and good in effect, achieves the effect of turning waste into wealth, solves the problems that at present, the reinforcement effect on salinized soil of saltwater intrusion regions and cohesive soil containing organic matter is poor in civil engineering construction, and has remarkable social benefits and economic benefits, wherein the organic content of the cohesive soil is smaller than or equal to 150 g / kg (15).

The invention belongs to the technical field of soil conditioning, and discloses a method for monitoring, evaluating and repairing salinization of farmland soil with seawater flowing backwards, whichcomprises the following steps: monitoring the salinization of the farmland soil, and obtaining the change rule of the salinity of the farmland soil; constructing a soil salinization parameter inversion model based on multi-source satellite data, and dynamically monitoring the soil salinization; screening a soil conditioner suitable for backward flowing of seawater into the farmland; creating a seawater backflow farmland soil improvement technical mode, and cultivating conditions suitable for crop growth. Compared with a control mode, the mode of the organic fertilizer (200 kg / mu of Lvbaofeng and 300 kg / mu of refined coco coir), the soil conditioner (25 kg / mu of Taizhong Xingnong) and the crop formula fertilizer (40 kg / mu) has the advantages that the yield of crops can be increased by 22-38%; soil salinity is reduced by about 32.31%-55.21%Compared with a contrast mode, the mode of the organic fertilizer (200kg / mu of green Huizhou, 300kg / mu of refined coconut bran), the soil conditioner(25kg / mu of Taizhu agriculture) and the crop formula fertilizer (40kg / mu) has the advantage that the yield of crops can be increased by 22% to 22%. 38%, the soil salinity is reduced by about 32.31%-;55.21%.

The invention discloses a process for treating river sewage comprising, arranging a gate at the convergence of the river and its entrance for preventing sea water encroachment, installing a water pump in front of the gate (on the river side) for pumping the water from the river to discharge to the sea side so as to lower the water level of the river bed. The process provided by the invention can prevent the salt-water encroachment and improve the river condition substantially.

The invention relates to an underwater aeration disk for aquaculture, comprising a main pipe, multiple branch pipes connected with the main pipe. The invention is characterized in that a check valve is arranged on the main pipe. The invention has the following advantages: as the main pipe is provided with the check valve, the invention can prevent seawater encroachment, prevent water from entering connecting pipes and icing in the winter, facilitate aeration, is free from the influence of placement direction of the aeration disk, is applicable to different underwater terrains, can improve water quality environment and bottom materials, solve water body layering problem and facilitate growth of sea cucumbers.

The invention discloses a water drive reservoir natural water invasion, water injection and production balance state determining method comprising the following steps: acquiring a reservoir average single-well fluid productivity index and a reservoir average single-well water injectivity index; acquiring the maximum bottom hole flowing pressure of the reservoir water injection well; determining the reservoir water injection rate, the reservoir water influx and the reservoir liquid production capacity; determining the relation of the natural water influx, water injection rate and liquid production capacity under the condition of production balance based on the principle of material balance; and drawing a water invasion, water injection and production balance curve based on the principle of material balance, and finding out the 'balance point' of the reservoir. According to the invention, the relational expression which must be met for the realization of stable output of a reservoir along with the increase in water content is calculated out, and a theoretical basis is laid for reservoir stable output analysis. The production pressure difference, average pumping well bottom hole flowing pressure and reservoir pressure level required for the realization of stable output of an instance reservoir in different water cut periods in the future under different well spacing densities and different injector-to-producer ratios are analyzed, and the result provides a technical support for efficient and reasonable development of water drive reservoirs.

The invention discloses an emergency ventilation device applied to an underwater vehicle and a submersible. The device comprises an inflation float ball, the middle of the inflation float ball is provided with a through hole which is used for a ventilation extending pipe to penetrate through, the bottom of the ventilation extending pipe is provided with an air guiding hole which is communicated with one end of a connecting hose, the other end of the connecting hose is communicated with the interior of a cabin of the vehicle, the bottom of the ventilation extending pipe is movably connected with an emergency handle, and the emergency handle is arranged in the cabin. According to the emergency ventilation device, natural buoyant force of the float ball is utilized, emergency come-up is conducted by carrying the ventilation hose under emergency situations, so that the restriction of the diving depth is greatly improved theoretically, an end ventilation pipe can automatically extends out under illumination sensing to allow the ventilation pipe to be reach the part above the sea level with safety distance, so that it is ensured that the ventilation pipe can be normally used under certain wind-wave situations, and the sea water back flooding is avoided. The emergency ventilation device has the advantages that the overall operation is simple, it is only needed to pull the emergency handle hard under emergency situations to achieve the emergency ventilation function, and the safety performance is greatly improved.

The invention provides a governing system for underground water subjected to seawater intrusion, and a construction method of the governing system. According to the conditions of geology, topography,an underground quaternary aquifer and the natural slope of the aquifer from the upstream part of an underground water area to a seawater intrusion water inlet section, a seawater-preventing dike is constructed at a seawater intrusion water inlet, and a plurality of automatic opening-closing valves are distributed on the seawater-preventing dike; and under the condition of the seawater normal waterlevel elevation or tidal wind wave water level elevation, the seawater-preventing dike can thoroughly block a seawater intrusion water inlet channel, thus seawater cannot invade the inner side of theseawater-preventing dike in an intrusion mode, and water on the inner side of the seawater-preventing dike utilizes natural hydraulic kinetic energy generated by upstream underground water of the underground water area through the downstream slope to break through valve plates of the automatic opening-closing valves to be discharged. According to the governing system, the self-cleaning function of a seawater intrusion area is achieved, thus the governing problem of the seawater intrusion area is solved, ecological self-restoration is achieved, the environment is protected, and the cost is saved.

The invention discloses a seawater desalination and irrigation integrated full-automatic floating platform and application thereof, and relates to the technical field of sea water desalination and irrigation energy conservation and emission reduction. The seawater desalination and irrigation integrated full-automatic floating platform comprises a full-passive solar distillation module, an irrigation module, a connecting module and a buoyancy device; the full-passive solar distillation module comprises a water tank, an automatic water supplementing evaporator, a collecting tank, a daylighting panel, a condensation plate and a baffle plate; the automatic water supplementing evaporator comprises a plate wall, a foam block and fiber cotton cloth; a heat conducting plate is arranged at one end,away from the daylighting panel, of the condensation plate and extends into the water tank; the lower surface of the daylighting panel is coated with a transparent anti-fog coating; the irrigation module comprises a water storage part containing soil and hydrogel, and the mass part ratio of the soil to the hydrogel is 10: 1-2: 1; the connecting module comprises a sliding groove and a pipeline. The buoyancy device comprises a plurality of floating blocks. The floating platform is applied to sea water desalination, offshore planting and full-passive sea water evaporation, improves the light energy utilization rate and the sea water evaporation efficiency, prevents sea water from flowing backwards, facilitates later maintenance, and achieves full-automatic integration of the floating platform.

The invention discloses a fully automatic floating platform integrating seawater desalination and irrigation and its application, and relates to the technical field of seawater desalination and irrigation energy saving and emission reduction, including a full passive solar distillation module, an irrigation module, a connection module and a buoyancy device; a full passive solar energy The distillation module includes a water tank, an automatic water replenishment evaporator, a collection tank, a daylighting plate, a condensation plate, and a baffle; the automatic water replenishment evaporator includes a board wall, a foam block, and a fiber cotton cloth. The end of the condensation plate away from the daylighting plate is provided with a heat conduction plate extending to the inside of the water tank ; The lower surface of the lighting board is coated with a transparent anti-fog coating; the irrigation module includes a water storage part filled with soil and hydrogel, and the mass-to-number ratio of soil and hydrogel is 10:1 to 2:1; the connection module Including chute, pipeline, buoyancy device including several floating blocks; used in seawater desalination, offshore planting, fully passive seawater evaporation, improving light energy utilization rate, seawater evaporation efficiency, preventing seawater backflow, convenient for later maintenance, and realizing fully automatic integration of floating platform change.

The invention discloses an inversion method for freshwater guarantee rate along the estuary, which comprises the following steps: according to the historical freshwater runoff and tide level data of the estuary, the runoff distribution function affected by artificial water intake is obtained; B. Establishing the runoff-tide level two-dimensional joint distribution and its joint risk probability model; C. Based on the measured topography of the estuary, construct a three-dimensional hydrodynamic and salinity mathematical model; D. Based on the three-dimensional hydrodynamic and salinity mathematical model obtained in step C, use the item-by-item combination of runoff and tidal level Saltwater intrusion simulation, get the runoff and tidal intervals where no saltwater intrusion occurs in each river section, that is, the freshwater guarantee area; E. Calculate the freshwater guarantee rate along the estuary with saltwater intrusion based on step B and step D; F. According to step E, get The freshwater guarantee rate along the estuary is obtained, and then the critical water intake section under different water intake scales is obtained. The invention has the beneficial effects of providing a risk assessment method for salt water intrusion, capable of realizing accurate quantification of the fresh water guarantee rate along the estuary.

The invention relates to a predication based river water-source heat pump water intake control method and system for a seawater jacking area. The predication based river water-source heat pump water intake control method comprises the following steps: providing a river water-source heat pump water intake control system, and predicating time characteristic parameters of river water-source heat pumpoperation according to historical operation data of the river water-source heat pump water intake control system; obtaining river historical tide data, comparing and analyzing the river historical tide data with tide forecast data obtained by networking, and predicating specific time that seawater flows backwards and reaches a water intake position of a river water-source heat pump during flood tide every day; inputting the data into the system, utilizing a statistical regression analysis method for a machine learning method to intelligently train, and calculating the optimal dynamic water intake control method which corresponds to different time points after training. The river water-source heat pump water intake control system operates according to the dynamic water intake control method, can be ensured to stably extract fresh water from river flow in the seawater jacking action area throughout the year through dual control of large data predication and system real-time monitoring,and can realize long-term stable and reliable operation.

The invention provides a governing system for underground water subjected to seawater intrusion, and a construction method of the governing system. According to the conditions of geology, topography,an underground quaternary aquifer and the natural slope of the aquifer from the upstream part of an underground water area to a seawater intrusion water inlet section, a seawater-preventing dike is constructed at a seawater intrusion water inlet, and a plurality of automatic opening-closing valves are distributed on the seawater-preventing dike; and under the condition of the seawater normal waterlevel elevation or tidal wind wave water level elevation, the seawater-preventing dike can thoroughly block a seawater intrusion water inlet channel, thus seawater cannot invade the inner side of theseawater-preventing dike in an intrusion mode, and water on the inner side of the seawater-preventing dike utilizes natural hydraulic kinetic energy generated by upstream underground water of the underground water area through the downstream slope to break through valve plates of the automatic opening-closing valves to be discharged. According to the governing system, the self-cleaning function of a seawater intrusion area is achieved, thus the governing problem of the seawater intrusion area is solved, ecological self-restoration is achieved, the environment is protected, and the cost is saved.

The invention discloses a sewage marine disposal and discharge device, and relates to the technical field of sewage marine disposal. The device specifically comprises a flow distribution spherical shell, blocking devices and water outlet devices, wherein the outer side of the flow distribution spherical shell communicates with a water inlet pipe and water outlet pipes correspondingly, the end, away from the flow distribution spherical shell, of the main water inlet pipe communicates with a sewage conveying pipeline, the multiple water outlet pipes are evenly distributed on the flow distribution spherical shell, the blocking devices are arranged at the ends, close to the flow distribution spherical shell, inside the water outlet pipes, the blocking devices can block water circulation on one sides of the blocking devices, the water outlet devices are arranged at the ends, away from the flow distribution spherical shell, of the interiors of the water outlet pipes, and the impact force of water flowing out of the water outlet devices can be increased through the water outlet devices. According to the sewage marine disposal and discharge device, external seawater can be blocked, seawater is prevented from flowing backwards into the flow distribution spherical shell and the sewage pipeline, the sewage discharge speed is higher, sewage can be conveniently discharged to farther parts, and the sewage diffusion speed is increased.

The invention provides an adjustable underground curtain suitable for a coastal underground reservoir and a construction method of the adjustable underground curtain. According to hydrogeological conditions of a coastal area, related areas such as underground fresh water and seawater invasion are determined; according to the seawater invasion area, the construction position of the adjustable underground curtain is selected, the adjustable underground curtain needs to be completely cut off the seawater invasion area, the upper portion of the adjustable underground curtain is built to the ground surface, the bottom of the adjustable underground curtain is built to the bottom layer impermeable bedrock, and the underground curtain wall is slightly higher than the highest sea level of the local sea level; the adjustable underground curtain comprises fixed underground walls and adjustable gates, and the adjustable gates and the fixed underground walls are distributed alternately. By means of the technical scheme, the opening size of the underground curtain gate is adjusted in real time, seawater backflow type invasion in the dry season is prevented, and soil salinization in the coastal area in the wet season is avoided.

The invention discloses a cascade hydropower station community ecological regulation intelligent control system, which comprises a multi-source monitoring module, an information management and control module, an intelligent reasoning module, an ecological regulation module and a system maintenance module. The invention also discloses a cascade hydropower station community ecological regulation intelligent control method. According to the technical scheme of the invention, the data of multiple sources are accurately monitored, intelligently integrated, hierarchically managed and controlled. Meanwhile, based on the intelligent allocation function of the multi-target ecological regulation process by means of the intelligent reasoning module, the targeted ecological optimization and regulation for a cascade hydropower station community, with the comprehensive ecological standard-reaching rate to be maximal as the target, is realized. Multiple ecological regulation requirements in the reservoir area, such as tributary algal bloom, sedimentation reduction at the tail of a water reservoir, sand peak during the flood season, the breeding of four major Chinese carps, downstream ecological water compensation and saltwater intrusion at a river mouth, can be fully met.