59 results about "Seawater intrusion" patented technology

The invention discloses a spiral electrode resistivity probe rod based on an electric method and a monitoring method thereof, including a spiral probe rod, an electrode recovery device and a penetration device, and the penetration device is used to assist the spiral probe rod to rotate and penetrate into the soil , the electrode recovery device is used to restore the spiral electrode to a closed ring electrode in the measurement state. The structure design of the probe rod proposed in this scheme can be manually screwed into the soil through the design of the threaded electrode after the earth taker is drilled; The ring electrodes with spaced distribution can complete long-term in-situ observation. The design of this device greatly reduces the time and cost of equipment installation and improves the installation efficiency; it also ensures that the resistivity gradient of the soil can be truly reflected and promotes the further development of soil in-situ monitoring technology. , to provide necessary technical and data support for the study of seawater intrusion, the evolution mechanism of soil salinization and disaster prevention.

Disclosed is a non-powered seawater pumping apparatus for reducing seawater intrusion in a land in which an aquifer with a seawater-fresh water boundary surface is formed, the apparatus including a pumping pipe having opposite open end portions, a first end portion of the opposite open end portions being positioned below a sea level and a second end portion being positioned below a seawater-fresh water boundary surface in the land, and a well disposed to surround a lateral surface of a land-buried portion of the pumping pipe, which is buried in the land, so as to space away the land-buried portion of the pipe from the land, wherein seawater is filled in the pumping pipe, and the well includes a screen having a plurality of through holes formed along a circumference of the well at a lower end portion of the well.

The invention relates to a system and a method for monitoring seawater intrusion-ground water level-soil salinization in real time. The system comprises an upper computer, an acquisition and emission device with a general packet radio service (GPRS) module, and a resistivity measurement device consisting of pluggable nylon modules and copper electrode rings among the pluggable nylon modules, wherein each copper electrode ring is connected with a central control unit in the acquisition and emission device through a wire. The method comprises the following steps of: selecting a sample point in a seaside region; measuring the resistivity of a soil sample at the sample point when seawater is saturated, fresh water is saturated and the salt content is 0.3 percent, and taking the resistivity asan early warning threshold value; and giving an alarm when the bottom part, middle part or upper part of the resistivity measurement device reaches the threshold value. The system is widely applied, is convenient to use and can be combined according to the monitoring aim to reduce cost, dynamic, in-situ and real-time monitoring is realized through remote data transmission, remote, in-situ, real-time and automatic synchronous monitoring is realized by vertically measuring resistivity at certain depth, and the system has great significance for studying the seawater intrusion-ground water level-soil salinization.