Device for collecting and extracting soil solutions in karst mountain areas and using method thereof

Abstract

The invention discloses a device for collecting and extracting soil solutions in karst mountain areas and a using method thereof. The device is mainly composed of a water collecting device and a water pumping device. The water collecting device comprises a multiaperture perspex sheet (1) and a water collecting basin (2). The water pumping device comprises a figuline head (5), a gas inlet pipe (6), a water outlet pipe (7), a water colleting bottle (8), a suction pipe (9) and a vacuum pump (10). The device is simple in structure, convenient to operate and capable of effectively collecting soil solutions in shallow soil, which is rich in rubble layers, of the karst mountain areas for a long time, and the ionic composition in the water samples is maintained basically unchanged to the maximum extent; the soil solution collected and stored in the device can be extracted completely every time sampling is carried out, it is guaranteed that the soil solutions of the last time unit can be collected every time, and the device has obvious advantages over researching of soil solution physicochemical properties and response to the outside world.

Description

technical field [0001] The invention relates to a device for collecting and extracting soil solution, in particular to a device for collecting and extracting soil solution suitable for shallow thin layers of gravel soil in karst mountainous areas and a method for using the device, which belongs to the technology of collecting and extracting soil solution field. Background technique [0002] At present, there are many technologies and devices used for soil water extraction at home and abroad, mainly including mechanical pressing, azeotropic method, micro distillation and vacuum distillation. However, these existing devices are mainly aimed at loam, sandy soil and other pure soils as water intake objects, and the design is complicated. However, soil water extraction devices for limestone bedrock overlaid with gravel soil layer widely distributed in karst areas are very rare, and it is more difficult to apply clay heads to the soil in karst development areas. At home and abro...

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Problems solved by technology

However, these existing devices are mainly aimed at pure soils such as loam and sand as water intake objects, and the design is complicated

However, soil water extraction devices for limestone bedrock overlying gravel soil layers widely distributed in karst areas are very rare, and it is difficult to apply clay heads to soils in karst development areas

At home and abroad, test sample extraction devices or vacuum pumps are usually used to extract soil water samples, which is time-consuming and laborious, and it is easy to cause some glass containers and connecting pipes to break, and it is impossible to achieve a large amount of extraction in the actual sense.

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