Single-hole multi-level groundwater monitoring system and method

Abstract

The invention belongs to the technical field of underground water monitoring, and particularly discloses a single-hole multiple-layer underground water monitoring system and method. The system comprises a cylindrical monitoring pipe body, a plurality of monitoring passages are formed on the monitoring pipe body along the axial direction and include a central monitoring passage and a plurality of outer-side monitoring passages, and a monitoring hole group is formed at a position, corresponding to depth at which sampling needs to be performed, in a pipe wall, adjacent to each outer-side monitoring passage, of the monitoring pipe body. By the system and method, layered monitoring for multiple target water-containing layers in the same monitoring well hole is realized, so that number of well completion and maintaining and well-washing cost are reduced; the system is free of limitation of depth of the water-containing layers and high in well completion depth, can be mounted in a shallow-layer underground water monitoring well of 30-50m for use and can be mounted for use in an underground water monitoring well with depth reaching one or even three hundred meters.

Description

[0001] (1) Technical field [0002] The invention belongs to the technical field of groundwater monitoring, and in particular relates to a single-hole multi-level groundwater monitoring system and method. [0003] (2) Background technology [0004] Monitoring and mastering the dynamic change characteristics of groundwater is an important basis for scientifically evaluating groundwater resources, formulating reasonable development and utilization and effective protection measures, reducing and preventing groundwater pollution and related geological disasters. Traditional groundwater level and water quality monitoring is generally carried out by using a single wellbore facility for a single target aquifer or a mixed aquifer, using on-site monitoring, remote monitoring, and wellbore sampling. If you want to obtain the water level and water quality information of different aquifers at a certain location, you need to build multiple wells near a specific location, and adopt the seali...

AI Technical Summary

Problems solved by technology

However, this monitoring product is mainly for layered monitoring of shallow groundwater. Due to the limitation of elastic parameters of materials, it is difficult to be used for monitoring deep groundwater. The monitoring depth is mainly between 20-50m

In addition, due to the small diameter of the channel of the monitoring pipe, the measurement of groundwater level and the collection of water samples require the application of expensive special miniature water level gauges and samplers. Ordinary samplers and water level gauges cannot be used, which has become the biggest obstacle to popularization and application.

[0008] In view of the present situation and existing technical problems of groundwater monitoring facilities and technical methods at home and abroad, the purpose of this invention is to provide a single-hole multi-level monitoring system and method for deep groundwater aquifers, so that the monitoring system will not be monitored during installation. The limitation of well depth solves the monitoring problem of single hole and multi-level groundwater

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