Method for observing water level of multiple layers of underground water

Abstract

The invention discloses a method for observing the water level of multiple layers of underground water, and belongs to a hydrogeological exploration technology. The method comprises the steps that 1, a hydrogeological hole is drilled at a to-be-observed position with multiple layers of the underground water; 2, test pipes of which the number is the same as the layer number of water-bearing layers are put into the hydrogeological hole, cobbles are filled in hydrogeological hole segments corresponding to all the water-bearing layers, then concrete is filled in hydrogeological hole segments corresponding to water-resisting layers over the water-bearing layers, the test pipes comprise seamless steel pipes and strainer pipes connected to the lower ends of the seamless steel pipes, and the pipe walls of the strainer pipes are provided with multiple water permeating holes. According to the method for observing the water level of multiple layers of the underground water, the water level of multiple layers of the underground water can be simultaneously observed through the same hydrogeological hole, the construction difficulty is small, and the steps are simple.

Description

technical field [0001] The invention relates to hydrogeological observation technology, in particular to a method for observing multi-layer groundwater levels. Background technique [0002] The groundwater table is the elevation of the water surface in an underground aquifer. According to the drilling observation time, it can be divided into initial water level, stable water level, water level in wet season, water level in dry season, and water level before freezing. [0003] The main reasons for the decline of the groundwater level are: one is: human factors, mainly the overuse of human beings. The second is natural factors. Such as the elevation of the terrain caused by the earthquake, the sinking of the underground river, etc.; the diversion of the river; the change of the climate, etc. [0004] Rising groundwater levels have both natural and man-made causes: [0005] A short-term increase in rainfall, changes in the direction of underground rivers in karst areas, and...

AI Technical Summary

Problems solved by technology

What is unreasonable is agricultural flood irrigation, excessive irrigation water and untimely drainage, which will lead to the rise of groundwater level and even cause secondary salinization disasters

[0006] Long-term dynamic observation of the groundwater level is required during hydrogeological exploration. There are aquifers between the aquifers and above the top aquifer. Only one aquifer can be observed in the same borehole. In order to observe the same area Underground dynamics of different aquifers, each aquifer needs to construct a borehole, which requires a large amount of engineering and high investment

Images