Combined underground water monitoring device

Abstract

Provided in the invention is a combined underground water monitoring device at least comprising a data acquisition terminal and a monitoring pipe fitting. A plurality of sensors are installed in the monitoring pipe fitting. The monitoring pipe fitting includes a plurality of monitoring sampling tubes, a plurality of sealing isolating tubes, a plurality of connecting tubes, and a tail tube located at the tail end of the monitoring pipe fitting, wherein the tubes are mutually connected; and all monitoring sampling tubes and all sealing isolating tubes are distributed alternately and are connected by the connecting tubes. The main body of the monitoring pipe fitting contains an outer tube, a gas tube, a support plate, and a sampling tube; the support plate is installed in the outer tube by being perpendicular to the axis of the outer tube; the gas tube and the sampling tube are fixed by the support plate; and more than two sampling tube beams are arranged in the sampling tube. Sealing isolating gasbags coat the outer tubes of the sealing isolating tubes; and airbag branch tubes connecting the sealing isolating gasbags and the gas tube are arranged in the tube walls. Sampling openings connected with the sampling tube beams are arranged on the outer tubes of the monitoring sampling tubes and the tail tube; and the lower end of the tail tube is sealed by a sealing base plate. With the device, monitoring and sampling of underground water of the multi-layer water-containing layer and the same water-containing layer at different depths can be realized.

Description

technical field [0001] The invention relates to a groundwater monitoring device, belonging to the technical field of groundwater monitoring. Background technique [0002] At present, the shortage of groundwater resources in my country is very serious. The reasons for the shortage of groundwater resources in our country are, on the one hand, the substantial increase in water demand, and on the other hand, the unreasonable development and utilization of groundwater resources and serious waste. At the same time, water pollution is exacerbating China's groundwater crisis. Relevant experts from the China Geological Survey once pointed out that 90% of the country's groundwater has suffered from varying degrees of pollution, of which 60% are seriously polluted. According to estimates, my country's natural groundwater resources are about 828.8 billion cubic meters per year, accounting for about 30% of my country's total water resources (river runoff and groundwater volume), and the...

AI Technical Summary

Problems solved by technology

[0004] 1. The cost of single-layer well construction is high and expensive;

[0005] 2. Because there are many well pipes in multi-layer monitoring wells, the water-stopping process is complicated and difficult to seal;

[0006] 3. Conventional non-specific indicators of groundwater cannot realize in-situ monitoring;

[0007] 4. The integration and automation of monitoring devices are low, and the accuracy is poor, and high-precision detection mainly relies on imports;

[0008] 5. The completion process of the monitoring well is complicated, especially the water sealing (used to prevent the hydraulic connection) and the filling of the filter material (to reduce the impurities of the groundwater sample), which is time-consuming and energy-consuming, and the effect is often not ideal

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