Stratified sampling device for columnar sediment

Abstract

The invention discloses a stratified sampling device for columnar sediment. The device comprises a sampling head; the bottom of the sampling head is fixedly connected with the top of a sampling tube assembly in a sealing way by means of a flange, and guide wing pieces are arranged around the sampling head; the sampling head comprises a connecting part, a connecting rod, a sliding counter weight hammering block and a connecting rope; the connecting rod is fixedly arranged on the connecting part; the sliding counter weight hammering block is arranged on the connecting rod in a sliding way; the connecting rope is connected with the sliding counter weight hammering block; a sampling column assembly comprises a single-sided sliding sealed square hollow sampling column and a bottom sealing mechanism; the upper end of the single-sided sliding sealed square hollow sampling column is fixedly connected with the bottom of a connecting end of the sampling head by means of a flange; a bottom sealing mechanism is arranged at the lower end of the single-sided sliding sealed square hollow sampling column. According to the stratified sampling device, the sampling head and the sampling column assembly which are respectively arranged on the top and at the bottom are sampling seal facilities, so that a double-insurance effect is achieved; the sampling tube diameter can be very easily increased, sothat more sediment samples to be taken can be obtained at a time.

Description

technical field

[0001] The invention relates to the field of sediment bottom mud collection and research on mud stratification characteristics, in particular to a columnar sediment stratification sampling device. Background technique

[0002] Studies have shown that sediments can effectively record the evolution characteristics of organic matter deposition process and age. Through the dating of sediment columnar samples and the analysis of organic matter content components, the evolution law of the watershed over the years can be reproduced, which is an effective method. method. Therefore, it is particularly important to collect undisturbed and continuous sediment columnar samples. In addition, the study of the impact of the release of organic matter from the black and odorous sediment on the water body, as well as the analysis and prediction of the impact before and after dredging, all rely on the integrity of the sample collection.

[0003] At present, the most successfu...

Images