Soft sediment core sampling and cutting integrated sampler for tidal bank marsh

Abstract

The present invention discloses a soft sediment core sampling and cutting integrated sampler for tidal bank marsh, wherein the soft sediment core sampling and cutting integrated sampler has a sediment sampling and cutting integrated function, and the sediment sampling system mainly comprises an expansion ring, a double-layer steel pipe, an inflation pipe, a piston, a piston rod, a fastening hole, a handle, a position limiting hole, an inflation and deflation cylinder and a base, the piston mainly comprises four parts such as a fixed steel sheet, a rubber ring, a pressurization steel sheet and a piston ring pressurization valve, and the sediment cutting system mainly comprises an extending pipe having centimeter scales, a sediment position limiter and a cutting cutter blade. With the set of the device, the sediment in the phreatic water marsh can be sampled, the sediment is slowly pressed into the pipe by rotating the steel pipe, the sediment is sealed through the piston and the expansion ring arranged on the upper and down, the complete dried sediment or the core under the mud state is taken out, and the taken core is accurately cut through the positioning cutter; and the device of the present invention has characteristics of convenient assembly, simple field operation, rapid sample cutting, high efficiency and the like.

Description

technical field [0001] The invention relates to an integrated sampler suitable for columnar samples and divisions of soft sediments in tidal flat wetlands. Background technique [0002] The research plot is located in the largest natural continental beach wetland in the Minjiang River estuary area - eel beach wetland, with geographical coordinates between 26°00′36″~26°03′42″N, 119°34′12″~119°41 ’40″E belongs to the transition zone between the middle subtropical zone and the southern subtropical zone, with a warm, hot and humid climate, with an average annual temperature of 19.3°C and an annual precipitation of about 1380mm. Eel Beach Wetland is located in the Meihua Channel between Langqi Island and Tantou-Wenling-Meihua in Changle City. The sediment transported by the Minjiang River from the upper reaches is silted in the Meihua Channel, forming estuary shoals. A sandbar with a length of about 21km and a width of about 20m is formed in a northwest-southeast direction, whic...

AI Technical Summary

Problems solved by technology

During the actual sediment sampling process, it was found that due to the lush wetland plants and well-developed root system, it is difficult to collect complete sediment columnar samples, and there are also big problems in accurate segmentation. Therefore, it is urgent to develop a set of sediment collection and segmentation. the sampler

Images