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.

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 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 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 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 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 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.