Underground water level monitoring method and monitoring device

Abstract

The invention relates to an underground water level monitoring method and a monitoring device, and discloses a monitoring method and a monitoring device which are used for monitoring the change condition of the underground water level through cooperation of a laser range finder and a floating platform and sampling underground water on the uppermost layer through a sampling assembly after the water level changes to a certain degree. The laser range finder is arranged at the bottom of the supporting bottom plate, the sampling assembly is arranged at the top of the supporting bottom plate, the floating platform assembly is connected with the sampling assembly, and the laser range finder is matched with the floating platform assembly to monitor the change condition of the underground water level. The floating platform assembly is matched with the sampling assembly to sample underground water on the uppermost layer after the underground water level changes to a certain degree.

Description

technical field [0001] The invention relates to a groundwater level monitoring method and a monitoring device, relating to a groundwater level monitoring method and a monitoring device, which belong to the field of groundwater environment monitoring. Background technique [0002] The groundwater level is the most direct data that reflects the state of the groundwater. The groundwater level is a very critical data when monitoring the groundwater level, evaluating and calculating the amount of groundwater resources. There are many ways to monitor the groundwater level, and the two most commonly used are There are two methods, one is to put the drop-in sensor into the groundwater monitoring well for monitoring, and the other is to use the laser rangefinder to measure the water level change of the groundwater, but the above method cannot automatically sample the groundwater after the groundwater level changes. Groundwater is an important part of water resources. Due to its stabl...

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Problems solved by technology

[0002] The groundwater level is the most direct data that reflects the state of the groundwater. The groundwater level is a very critical data when monitoring the groundwater level, evaluating and calculating the amount of groundwater resources. There are many ways to monitor the groundwater level, and the most commonly used are two There are two methods, one is to put the drop-in sensor into the groundwater monitoring well for monitoring, and the other is to use the laser rangefinder to measure the water level change of the groundwater, but the above method cannot automatically sample the groundwater after the groundwater level changes. Groundwater is an important part of water resources. Due to its stable water quantity and good water quality, it is one of the important water sources for agricultural irrigation, industrial mines, and cities. After the groundwater level changes, it is necessary to monitor and analyze the water quality in time. Therefore, after using the above-mentioned monitoring method to monitor the groundwater level changes, it is often necessary for the monitoring personnel to sample the groundwater through the sampling device, which is time-consuming and laborious, with low automation and high labor costs, and because the diameter of the groundwater monitoring well is small , the internal space is insufficient, and the sampling device may be entangled or collided with the water level monitoring device during the lowering process, which may easily cause damage to the equipment

[0003] Publication number CN113418648A discloses a groundwater wireless monitoring system, which includes an input-type sensing device, a monitoring terminal, a connecting cable, and a cable retracting device; the input-type sensing device includes a device housing, a water pressure sensor, a water temperature sensor, a micro Processor, wireless communication unit; the input sensor device is put into the groundwater monitoring well for groundwater monitoring; when the connecting cable is retracted, it drives the input sensor device to move up and down in the groundwater monitoring well; the wireless communication unit sends the water level data value, temperature The value is sent to the monitoring terminal for monitoring. This monitoring system uses an input sensor to monitor the groundwater level, but it cannot automatically sample the groundwater after the groundwater level changes. The monitoring personnel need to use a sampling device to take samples, which is time-consuming and laborious. The sampling device may also be entangled with the connecting cable or collided with the drop-in sensor device during the lowering process and be damaged

[0004] The publication number CN109238404A discloses a device for monitoring the groundwater level of a foundation pit by using a laser range finder, including a well pipe, in which groundwater pours into the well pipe, floating buoys on the water surface in the well pipe, the upper end of the well pipe is blocked by a protective cover, and the well pipe The outer wall of the upper end is provided with a plane part, and the metal half ring mounting screw hole is set on the plane part, and the concave strip is arranged above the metal half ring mounting screw hole on the plane part, and the metal half ring is installed on the plane part through a fastener, and the metal half ring can be along the Rotate the fastener, the end of the metal half ring is provided with a connecting block, the connecting block is attached to the plane part, the connecting block is provided with a connecting block perforation, and the inner wall of the connecting block is provided with a semicircular protrusion. The device uses laser distance measurement However, it is impossible to sample the groundwater after the groundwater level changes, and the monitoring personnel need to use another sampling device to take samples, which is time-consuming and laborious, and the sampling device is easy to float in the small space of the groundwater monitoring well. buoys were damaged by collision

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