Underwater fixed horizon sampling device and method

Abstract

The invention relates to an underwater fixed horizon sampling device and method, belonging to the hydraulic engineering field and having IPC as E02B 1 / 00 and E02D 33 / 00. The sampling device comprises a support system, an operation control system, an online monitoring control apparatus, a data acquisition system 10, an upper horizon water pump 17, a sampling pump 18, and a lower horizon water pump19, wherein the sampling pump 18 is placed at the middle position of the aquifer to be sampled, the upper horizon water pump 17 is placed above the aquifer to be sampled, and the lower horizon water pump 19 is placed below the aquifer to be sampled. The device and method of the invention overcome the difficulty that a conventional underwater fixed horizon sampling device has low sampling accuracyand large influence of water mixing from other horizons, can well solve the problem that a single, instant and stable water sample of a specified aquifer can not be collected, change original manual sampling mode, greatly improve working efficiency, and have high scientific application values.

Description

1. Technical field [0001] The invention relates to a sampling device and a sampling method for groundwater horizon determination, belonging to the field of water conservancy engineering, and its IPC international patent classification numbers are E02B 1 / 00, E02D 33 / 00. 2. Background technology [0002] Groundwater stratum sampling is to take samples from aquifers at a certain depth of groundwater, and specify the instant and single water quality of the aquifer through stratum sampling. At present, groundwater horizon-fixing sampling is already an important technical means in the field of groundwater environment research, and has been paid more and more attention. The groundwater stratification sampling device is an important device for accurate sampling of groundwater. At present, domestic groundwater horizon-fixing sampling devices generally complete the horizon-fixing sampling by controlling the closure of the water inlet of the sampler, which can be roughly divided into ...

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Problems solved by technology

The above two devices are currently the main stratum-fixed sampling devices in China, but they have the following problems in practical applications: 1) The water samples obtained by traditional sampling devices are mostly the mixture of the aquifer and other aquifers in the well pipe Water samples, a single water sample from a specified aquifer cannot be obtained, and cannot well reflect the water quality of the aquifer; 2) The water sample taken by the traditional sampling device is not the fresh water sample seeped from the aquifer, but the water sample in the well pipe 3) The traditional sampling device usually pumps water to update water samples before sampling, which intensifies the mixing of water samples from different aquifers, making it even more difficult to obtain represent the water quality samples of the designated aquifer, therefore, it is necessary to develop a groundwater stratification sampling device, which can obtain a single, stable and instant water quality sample of the designated aquifer, and also realize low investment, easy use, and Meet the needs of fixed water level sampling of different types of groundwater monitoring wells, and provide important equipment conditions and technical support for promoting the research of groundwater environment in my country

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