Method and device for acquiring deposition layer section of hydraulic test tank
A technology of sedimentary layer and hydraulics, applied in the field of sampling device of sedimentary layer section
Inactive Publication Date: 2013-06-12
ANHUI UNIVERSITY OF TECHNOLOGY
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[0004] In order to solve the problem of accurate sampling and measurement in the experimental research on sediment, organic matter, heavy metals and other pollutants in rivers, lakes and oceans, the present invention provides a method for collecting the sedimentary layer section of hydraulic test tank The method and the device for realizing the method
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[0020] The present invention will be further described below in conjunction with the drawings.
[0021] Such as figure 1 with figure 2 As shown, the device for collecting the sedimentary section of the hydraulic test tank is composed of a water tank 1, a partition 4, an inner cooling tube 5, an outer cooling tube 6, an insulation layer 7 and a liquid nitrogen bottle 8. There are two partitions 4, which are set separately On the sampling section and downstream, an inner cooling tube 5 and an outer cooling tube 6 are respectively arranged inside and outside the water tank 1. The inner cooling tube 5 is suspended on the mouth of the water tank 1, and is 20-40 mm away from the side wall and bottom sedimentary layer of the water tank 1. The cold pipe 6 is close to the outer wall of the water tank 1, and a detachable thermal insulation layer 7 is arranged outside.
[0022] The present invention will be further described in detail below in conjunction with examples.
[0023] The method a...
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The invention discloses a method and device for acquiring the deposition layer section of a hydraulic test tank. The method comprises: after finishing a hydraulic deposition test, using a liquid nitrogen freezing method to freeze a section to be tested, and freezing the water and underwater deposit of the section to be tested into ice cubes together so as to solidify the sample, and then taking out the solidified section sample. The device for realizing the method is composed of a water tank, separation boards, an inner cooling pipe, an outer cooling pipe, a thermal insulation layer, and a liquid nitrogen bottle. Two separation boards are respectively disposed at the upstream and downstream of the sample section. The inner cooling pipe and the outer cooling pipe are respectively positioned inside and outside the water tank. Suspended at the mouth of the water tank, the inner cooling pipe is about 20-40mm from the sidewalls and the bottom deposition layer surface of the water tank, while the outer cooling pipe is close to the outer walls of the water tank. The method and device of the invention solves the difficult problems of accurate sampling and measuring in experimental research of the deposition, transfer and conversion rules of silt, organic matters, heavy metals and other pollutants in rivers, lakes and oceans, thus being suitable for research of multilayer deposits.
Description
Technical field [0001] The invention belongs to the research field of sediment deposition, pollutant migration and transformation in a hydraulic test tank, and specifically relates to a sampling device for a sedimentary layer section. Background technique [0002] Surface soil runoff erosion, farmland irrigation, industrial sewage and domestic sewage discharge have brought a large amount of sediment and pollutants to rivers, lakes and oceans. These sediments are being transported, undergoing continuous erosion and silting, changing the river bed , The bottom of the lake and the sea floor. At the same time, organic matter, heavy metals and other pollutants in nature, industrial and agricultural production and domestic sewage are also accumulated and migrated over time. It has a close influence on the formation and distribution of submarine oil and the offshore environment. In order to study these deposition, migration and interpretation laws, people have designed and built hydra...
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IPC IPC(8): G01N1/04G01N1/42
Inventor 张新喜江用彬
Owner ANHUI UNIVERSITY OF TECHNOLOGY