Inclined underground water sampling method

Abstract

The invention relates to the technical field of underground water sampling and aims to provide an inclined underground water sampling method. The method comprises the following steps of setting a sampling area and a sampling depth in an area needing underground water environment investigation; according to the sampling area and the sampling depth, drilling points being set in an area where underground water environment investigation needs to be conducted, a drilling machine being used for drilling from the drilling points, and an inclined sampling well being formed; before water sampling, themethod further comprises the following steps of plugs being placed at the positions below the preset sampling depth in the inclined sampling well, and the plugs being made to expand and making close contact with the well wall of the inclined sampling well; and installing an underground water sampler, and respectively sampling and detecting the water sample between the two plugs and the water sample above the plug at the uppermost layer. The method is advantaged in that a problem that an existing inclined underground water sampling method is low in measurement result accuracy during stratifiedsampling is solved, and the inclined underground water stratified sampling method has the effect of improving measurement result accuracy of inclined underground water stratified sampling.

Description

technical field [0001] The invention relates to the technical field of groundwater sampling, in particular to an inclined groundwater sampling method. Background technique [0002] Groundwater has been in contact with aqueous media for a long time and carries a lot of information, so people often collect groundwater samples for various purposes for analysis to obtain useful information. [0003] At present, groundwater sampling mostly adopts the method of drilling and constructing groundwater sampling wells. Boreholes are generally drilled or pushed into a certain depth by a sampling rig on the ground vertically on the site, and then the well pipe is inserted, and the space between the well wall and the well pipe is filled with quartz sand and bentonite for filtration and sealing, and then cleaned and then placed in the groundwater well. Collect groundwater samples. When pumping water, the water stored inside the well pipe first flows out, followed by the water stored in t...

AI Technical Summary

Problems solved by technology

[0005] In the existing inclined groundwater sampling method, when performing layered sampling, water-stopping pipes are generally used to perform water-stopping treatment on the sampling area of ​​each layer and then layered sampling. The cost of hole expansion is high, and construction workers need to have good construction skills experience, otherwise the water-stop effect will be poor, and it will be difficult to obtain accurate water quality information for different aquifers

[0006] The above-mentioned existing technical solutions have the following defects: the existing inclined groundwater sampling method is difficult to operate when performing layered sampling, and it is difficult to ensure the accuracy of measurement

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