Underground water monitoring well and installation method

Abstract

The invention discloses an underground water monitoring well and an installation method. The underground water monitoring well involve the ground, a closed water stop layer is arranged on the lower side of the ground, a filter layer is arranged on the lower side of the closed water stop layer, a well wall pipe is arranged on the inner side of the closed water stop layer, an outer pipe is installedon the inner side of the well wall pipe, an inner pipe is arranged in the outer pipe, and a screen pipe is arranged on the lower side of the well wall pipe. In the well washing and sampling process,cross contamination caused in the water taking process can be effectively avoided, the outer pipe is used for water collecting and settling, and the inner pipe is used for water pumping so that suspended particles in the pumped underground water can be reduced, the double-well-pipe structure does not influence original functions of a traditional underground water monitoring well, such as underground water level measurement, additional protection is not needed, and the underground water monitoring well is not prone to being damaged.

Description

technical field [0001] The invention relates to the technical field of monitoring wells, in particular to a groundwater monitoring well and an installation method. Background technique [0002] In the actual process of groundwater monitoring and prevention, groundwater monitoring wells are an important means of groundwater investigation and supervision. However, the traditional groundwater monitoring well has a simple structural design, generally a 2-inch PVC-U plastic single-well pipe structure. Based on the fact that the monitoring well needs to be cleaned in time after the completion of the well, water samples need to be collected after the completion of the well construction. The water pumped out of the monitoring well should be clear and transparent, and the turbidity is below 5NTU to be qualified. Baylor tubes are usually used for well cleaning and sampling. In the case of deep groundwater buried depth, large water inflow and turbid groundwater quality, Baylor tubes ar...

AI Technical Summary

Problems solved by technology

However, the traditional groundwater monitoring well has a simple structural design, generally a 2-inch PVC-U plastic single-well pipe structure. Based on the fact that the monitoring well needs to be cleaned in time after the completion of the well, water samples need to be collected after the completion of the well construction. The water pumped out of the monitoring well should be clear and transparent, and the turbidity is below 5NTU to be qualified. Baylor tubes are usually used for well cleaning and sampling. In the case of deep groundwater buried depth, large water inflow and turbid groundwater quality, Baylor tubes are used. The efficiency of water intake methods such as pipes is extremely low. It takes more than 12 hours to clean a single well, which often cannot meet the needs of on-site well cleaning and sampling. Further, there are risks such as well pipe blockage caused by damage to the Baylor pipe.

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