Comprehensive system for potential risk identification and pollution prewarning of groundwater

A comprehensive system for potential risk identification and pollution prewarning of groundwater, comprising a cable laying device, a monitoring cable, and an electromagnetic retrieving device which are located in groundwater between two adjacent wells, wherein the two adjacent wells comprise a first well and a second well, the second well is located at a lower water level of the first well and communicates with the first well, the electromagnetic retrieving device is located in the second well, a plurality of sensors are arranged on the monitoring cable, and one end of the monitoring cable is connected to the cable laying device;

• the cable laying device comprises a device body, an anchoring module and an electromagnetic adsorption module, the electromagnetic adsorption module is arranged on the device body, the anchoring module is arranged at a bottom of the device body, and the monitoring cable is connected to the cable laying device after passing through the anchoring module;
• the anchoring module comprises a fixed pulley, a support pillar, and an anchoring block, two ends of the fixed pulley are rotationally connected to an upper part of the support pillar, a bottom of the support pillar is fixedly connected to the anchoring block, a bottom of the anchoring block is provided with an anchor rod, the monitoring cable is wound around the fixed pulley allowing the monitoring cable to change from a vertical direction to a horizontal direction, and a horizontal end of the monitoring cable is connected to the cable laying device;
• and
• the electromagnetic retrieving device comprises a pull rod, a telescopic tube, a magnetic chuck, and a plurality of claws, the pull rod is located above the magnetic chuck and is connected to the magnetic chuck through the telescopic tube, a magnetic attraction force is generated between the magnetic chuck and the electromagnetic adsorption module, the plurality of claws are arranged at intervals in a circumferential direction of the magnetic chuck, protrusions are fixed to inner sides of the plurality of claws, and a size of a ring formed by the protrusions is smaller than that of the electromagnetic adsorption module.